mirror of
https://github.com/thug1src/thug.git
synced 2025-01-22 05:43:47 +00:00
5810 lines
174 KiB
Plaintext
5810 lines
174 KiB
Plaintext
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;
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; set tab stops to 4 to read this file
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;
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;-----------------------------------------------------------------------------------------------------------------------------
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; The result of assembling this file is a set of vif packets with vifcode MPG, used to upload
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; microcode to MicroMem1, the 16K program memory of VU1. There is only one MPG assembler
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; directive, but this is clever enough to split the assembled code into multiple packets when
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; the maximum MPG packet size (256 64-bit instruction slots, 2K of program) is exceeded.
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; There will be the need to manage multiple sets of microcode, once there's more than 16K
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; total.
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;
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;-----------------------------------------------------------------------------------------------------------------------------
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;
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; Very brief overview of rendering scheme
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; ---------------------------------------
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;
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; I decided where possible to take a 'process-in-place' approach to basic triangle rendering.
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; e.g. a pair of texture coordinates loaded to address 100 in VU memory will end up being
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; output as a pair of texture coordinates from the same address, on its way to the GS. This
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; is efficient because it reduces the amount of data copying, as sometimes the VU doesn't
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; need to touch the data - e.g. vertex colours can sometimes pass straight through without
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; further processing.
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;
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; This means the data should be at least triple-buffered for maximum efficiency, since there
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; are 3 processes that can run in parallel - sending data into memory via VIF1, processing
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; the data using VU1, and sending data out through the GIF to the GS. For maximum flexibility,
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; I have chosen to use VUMem1 (the VU1 data memory) as a cyclic buffer, letting the data
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; packets themselves ensure that the triple-buffering rule is not violated. (This is an
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; original approach - generally people use fixed buffers.)
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;
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; The result of processing renderable data in VU1 will be a GS packet (see EE User's Manual,
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; section 7.2, "Data Format"). Each GS packet is composed of GS primitives which begin with
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; a GIFtag. Following through to the max on the 'process-in-place' philosophy, I consider the
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; incoming geometry data to also consist of packets made up of primitives, each with a tag.
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; The tag is a superset of the GIFtag, appearing to the GIF as a valid GIFtag but making use
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; of the many unused bits of the GIFtag to signal additional info to VU1, eg the size of the
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; packet, the address of the microcode that should be used to process the packet, etc.
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; (This is also a pretty nifty idea, although using the spare bits is common practice.)
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;
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; There are 3 varieties of primitive - a VU prim, containing contextual VU data that will be
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; loaded into floating point VU1 registers (which doesn't need kicking to the GS), a GS prim,
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; containing contextual GS data that won't be touched by the VU but will be kicked directly
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; to the GS where it will set some of the GS registers, and finally a geometry prim which
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; contains renderable geometry and will be processed by the rendering code into a GS prim
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; that outputs something on the screen. But all varieties of prim use a common tag format so
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; they can be freely mixed in the data and parsed by a common piece of code.
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;
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;-----------------------------------------------------------------------------------------------------------------------------
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; Registers used in the main parsing loop and in the renderers (all except for the clipping code)
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;
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; Integer registers:
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; VI00 - the constant zero register, always zero (doesn't change if you write something else to it)
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; VI01 - mainly temporary values, also hardwired as the result of the FCAND, FCEQ, FCOR instructions
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; VI02 - the data pointer as the prims are parsed
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; VI03 - an auxilliary data pointer, so that data can be read from one vertex while writing to another
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; VI04 - number of quadwords in each vertex of the current prim
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; VI05 - end address for the current prim
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; VI06 - size of the current prim
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; VI07 - \
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; VI08 - \\
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; VI09 - -- temporaries
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; VI10 - //
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; VI11 - /
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; VI12 - address of current tag
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; VI13 - address of packet start
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; VI14 - render flags
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; VI15 - EOP:NLOOP from current tag
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; VF00 - the constant register (0,0,0,1) (doesn't change if you write something else to it)
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; VF01 - temporary value
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; VF02 - temporary value
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; VF03 - temporary value
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; VF04 - temporary value
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; VF05 - temporary value
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; VF06 - temporary value
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; VF07 - temporary value
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; VF08 - temporary value
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; VF09 - (Near, Far, k/(xRes/2), k/(yRes/2)) where k=viewport_scale_x, should be 2048 but is 1900 because of clipper problem
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; VF10 - inverse viewport scale vector
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; VF11 - inverse viewport offset vector
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; VF12 - row 0, local to viewport transform
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; VF13 - row 1, local to viewport transform
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; VF14 - row 2, local to viewport transform
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; VF15 - row 3, local to viewport transform
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; VF26 - lightsource 2 colour (r,g,b,?)
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; VF17 - row 0, reflection map transform
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; VF18 - row 1, reflection map transform
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; VF19 - row 2, reflection map transform
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; VF20 - light vectors, x components
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; VF21 - light vectors, y components
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; VF22 - light vectors, z components
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; VF23 - ambient colour (r,g,b,?)
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; VF24 - lightsource 0 colour (r,g,b,?)
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; VF25 - lightsource 1 colour (r,g,b,?)
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; VF16 - texture projection scale vector
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; VF27 - texture projection offset vector
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; VF28 - saves the z-components of the view matrix during a z-push
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; VF29 - \
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; VF30 - - temporaries used in skinning code
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; VF31 - /
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;-----------------------------------------------------------------------------------------------------------------------------
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CULL=0x01 ; per-triangle view culling
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CLIP=0x02 ; full 3D clipping of triangles
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SHDW=0x04 ; skinned=>cast shadow into texture; non-skinned=>render mesh with projected shadow texture on it
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COLR=0x08 ; apply colour at vertices
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FOGE=0x10 ; calculate per-vertex fog coefficient
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WIRE=0x20 ; render skinned as wireframe (but doesn't render all edges)
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;-----------------------------------------------------------------------------------------------------------------------------
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; Make the very start and end of the file available to the linker, so the dma packet that
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; sends the code (using a dma ref tag) can be constructed.
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.global MPGStart
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.global MPGEnd
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; here's a list of all the entry points into the microcode so they're available to the engine
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.global Setup
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.global Jump
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.global Breakpoint
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.global ParseInit
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.global Parser
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.global L_VF09
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.global L_VF10
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.global L_VF11
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.global L_VF12
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.global L_VF13
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.global L_VF14
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.global L_VF15
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.global L_VF16
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.global L_VF17
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.global L_VF18
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.global L_VF19
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.global L_VF20
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.global L_VF21
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.global L_VF22
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.global L_VF23
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.global L_VF24
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.global L_VF25
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.global L_VF26
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.global L_VF27
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.global L_VF28
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.global L_VF29
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.global L_VF30
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.global L_VF31
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.global GSPrim
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.global Sprites
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.global SpriteCull
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.global ReformatXforms
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.global ShadowVolumeSkin
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; These entry points are currently not used, because the entry points are being generated in
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; the scene converter which doesn't have the linker information available for the microcode.
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; Instead there is a temporary jump table at the top of program memory, branching to each
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; routine via fixed known locations.
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.global Proj
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.global PTex
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.global Refl
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.global Line
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.global Skin
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; align to a 2^4=16 byte boundary, so it can be the target of a dma::ref
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.align 4
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; label so the engine knows where to start dma'ing the microcode from
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MPGStart:
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; The MPG directive (ended by .EndMPG at the bottom of the file) is the assembler mechanism
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; for constructing a vif packet using the MPG vifcode, which tells the vif to upload the
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; subsequent data as vu microcode. But it's cleverer than that, because (a) it will split
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; the data into multiple MPG vif packets if the maximum size for MPG is exceeded (2K), and
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; (b) all labels between the MPG and the .EndMPG will be reduced so that not only are they
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; relative to the start of the MPG block, but also act as if any extra MPG vifcodes inserted
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; into the data didn't really exist... as if the assembler output really contained just the
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; microcode and not the extra vifcodes, just like it will be when it reaches MicroMem1 (the
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; program memory of VU1).
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MPG 0, *
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;-----------------------------------------------------------------------------------------------------------------------------
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; Jump table. (This can later be eliminated with a mechanism for supplying vu1 label
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; addresses to the scene converter.)
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NOP NOP
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NOP NOP
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NOP NOP
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NOP NOP
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NOP B Breakpoint
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NOP NOP
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NOP B ParseInit
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NOP NOP
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NOP B Parser
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NOP NOP
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NOP B L_VF09
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NOP NOP
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NOP B L_VF10
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NOP NOP
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NOP B L_VF11
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NOP NOP
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NOP B L_VF12
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NOP NOP
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NOP B L_VF13
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NOP NOP
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NOP B L_VF14
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NOP NOP
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NOP B L_VF15
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NOP NOP
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NOP B L_VF16
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NOP NOP
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NOP B L_VF17
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NOP NOP
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NOP B L_VF18
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NOP NOP
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NOP B L_VF19
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NOP NOP
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NOP B L_VF20
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NOP NOP
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NOP B L_VF21
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NOP NOP
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NOP B L_VF22
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NOP NOP
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NOP B L_VF23
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NOP NOP
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NOP B L_VF24
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NOP NOP
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NOP B L_VF25
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NOP NOP
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NOP B L_VF26
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NOP NOP
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NOP B L_VF27
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NOP NOP
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NOP B L_VF28
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NOP NOP
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NOP B L_VF29
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NOP NOP
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NOP B L_VF30
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NOP NOP
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NOP B L_VF31
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NOP NOP
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NOP B GSPrim
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NOP NOP
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Proj: NOP B Proj1
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NOP NOP
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PTex: NOP B PTex1
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NOP NOP
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Refl: NOP B Refl1
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NOP NOP
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Line: NOP B Line1
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NOP NOP
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Skin: NOP B Skin1
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NOP NOP
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Light: NOP B Light1
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NOP IADDIU VI10,VI00,0
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LightT: NOP B Light1
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NOP IADDIU VI10,VI00,1
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WibbleT:NOP B WibbleT1
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NOP NOP
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LWibT: NOP B LWibT1
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NOP IADDIU VI10,VI00,1
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AddZPush:NOP B ZPush
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NOP LOI 16
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SubZPush:NOP B RestoreZPush
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NOP NOP
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Setup: NOP[E] XTOP VI02 ; initialise input pointer and halt
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NOP NOP
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Jump: NOP B JumpToIt
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NOP NOP
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SCAB: NOP B ScreenAlignedBillboards
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NOP NOP
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LAB: NOP B LongAxisBillboards
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NOP NOP
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SHAB: NOP B ShortAxisBillboards
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NOP NOP
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;-----------------------------------------------------------------------------------------------------------------------------
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JumpToIt: ; set new value for data pointer
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NOP MTIR VI02,VF01z
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NOP XTOP VI01
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NOP IADD VI02,VI02,VI01
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NOP B NextPrim
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NOP LQI VF01,(VI02++)
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;-----------------------------------------------------------------------------------------------------------------------------
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Breakpoint: ; for debugging purposes
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NOP[D] B NextPrim
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NOP LQI VF01,(VI02++)
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;-----------------------------------------------------------------------------------------------------------------------------
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;
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;
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;
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; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͻ
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|
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; <09> tag format <20>
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|||
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; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ
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;
|
|||
|
|
; This follows GIFtag format (EE User's Manual section 7.2.2), but with some added fields.
|
|||
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;
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;
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;
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; 31 30 23 22 16 15 14 0
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; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
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; <09>0 <20> NREG exponent <20> NREG mantissa <20>EOP NLOOP <20>
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|
|
; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
;
|
|||
|
|
;
|
|||
|
|
; 63 60 59 58 57 47 46 45 43 42 32
|
|||
|
|
; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
|
; <09> NREG <20> FLG <20> PRIM <20>PRE FLAGS <20> ADDR <20>
|
|||
|
|
; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
;
|
|||
|
|
;
|
|||
|
|
; 95 76 75 72 71 68 67 64
|
|||
|
|
; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
|
; <09> ... <20> [REG2] <20> [REG1] <20> REG0 <20>
|
|||
|
|
; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
;
|
|||
|
|
;
|
|||
|
|
; 127 112 111 96
|
|||
|
|
; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
|
; <09> <20> SIZE <20>
|
|||
|
|
; <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
;
|
|||
|
|
;
|
|||
|
|
;
|
|||
|
|
; Added fields:
|
|||
|
|
;
|
|||
|
|
; bits 22-16: the mantissa of ((float)NREG*powf(2,-23))
|
|||
|
|
; bits 23-30: the exponent of ((float)NREG*powf(2,-23))
|
|||
|
|
; bit 31: zero, the a sign bit for treating the x-component as a float
|
|||
|
|
;
|
|||
|
|
; bits 32-42: ADDR, the vu1 code address for processing the current primitive
|
|||
|
|
; bits 43-45: FLAGS, 43=unused, 44=u-clamp, 45=v-clamp
|
|||
|
|
;
|
|||
|
|
; bits 96-111: SIZE=NREG*NLOOP
|
|||
|
|
;
|
|||
|
|
; bits 112-127: unused
|
|||
|
|
;
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; This is the main loop that parses the incoming packet data. Each iteration of PrimLoop will do this:
|
|||
|
|
; - set VI04 to NREG, the vertex step size
|
|||
|
|
; - set VI05 to the end address for the current prim
|
|||
|
|
; - set VI06 to NREG*NLOOP, the size of the current prim
|
|||
|
|
; - set VI15 to hold EOP in its sign bit
|
|||
|
|
; - jump the the address of the renderer that will process the prim
|
|||
|
|
; The two entry points are Parser, which maintains the previous value of the data pointer VI02,
|
|||
|
|
; and ParseInit, which first initialises VI02 to the value in VIF1_TOP.
|
|||
|
|
|
|||
|
|
|
|||
|
|
ParseInit:
|
|||
|
|
NOP XTOP VI02 ; initialise VI02
|
|||
|
|
|
|||
|
|
Parser: NOP LQI VF01,(VI02++) ; get 1st tag
|
|||
|
|
NOP ISUBIU VI13,VI02,1 ; VI13 = start address of current packet
|
|||
|
|
NOP XITOP VI14 ; get run-time render flags from VIF1_ITOP
|
|||
|
|
|
|||
|
|
PrimLoop:
|
|||
|
|
ADDw.x VF02,VF01,VF00w MTIR VI15,VF01x ; VI15=EOP:NLOOP, 'ADDw' is for extracting NREG
|
|||
|
|
FTOI0.y VF02,VF01 MTIR VI01,VF01y ; VI01 = ADDR, renderer address
|
|||
|
|
NOP MTIR VI06,VF01w ; VI06 = SIZE = NREG*NLOOP, size of prim (excl. tag)
|
|||
|
|
NOP IADD VI05,VI02,VI06 ; VI05 = end pointer for prim
|
|||
|
|
NOP JR VI01 ; jump to renderer
|
|||
|
|
NOP MTIR VI04,VF02x ; VI04 = NREG (branch delay slot)
|
|||
|
|
|
|||
|
|
NextPrim:
|
|||
|
|
NOP IBGEZ VI15,PrimLoop ; loop if EOP==0
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
KickPacket:
|
|||
|
|
|
|||
|
|
; kick and stop
|
|||
|
|
NOP[E] XGKICK VI13 ; kick the processed packet to the GS
|
|||
|
|
NOP ISUBIU VI02,VI02,1 ; undo last postincrement (VI02 points to next packet)
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; Process a VU1 prim
|
|||
|
|
; ------------------
|
|||
|
|
; by loading the designated floating point registers.
|
|||
|
|
; It loads registers consecutively, starting from any register (VF09 or higher) and ending on
|
|||
|
|
; any of VF11, VF15, VF19, VF23, VF27 or VF31. The decision to load in batches of 4 was because
|
|||
|
|
; one often wants to load matrices as contextual data, and also to save having to put a test
|
|||
|
|
; (plus the necessary delay slots) after each individual register load... it just means having
|
|||
|
|
; to sometimes pad out the VU1 context to a 4-register boundary.
|
|||
|
|
|
|||
|
|
L_VF09: NOP LQI VF09,(VI02++) ; entry point for loading VF09, etc
|
|||
|
|
L_VF10: NOP LQI VF10,(VI02++)
|
|||
|
|
L_VF11: NOP LQI VF11,(VI02++)
|
|||
|
|
|
|||
|
|
MULw.w VF24,VF11,VF00w DIV Q,VF00w,VF10w
|
|||
|
|
SUB.w VF11,VF00,VF00 IBEQ VI02,VI05,VUPrimEnd
|
|||
|
|
MULq.w VF23,VF00,Q WAITQ ; VF23w = f0
|
|||
|
|
|
|||
|
|
L_VF12: NOP LQI VF12,(VI02++)
|
|||
|
|
L_VF13: NOP LQI VF13,(VI02++)
|
|||
|
|
L_VF14: NOP LQI VF14,(VI02++)
|
|||
|
|
L_VF15: NOP LQI VF15,(VI02++)
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI02,1
|
|||
|
|
NOP IBEQ VI02,VI05,VUPrimEnd
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP IBEQ VI01,VI05,VUPrimEnd
|
|||
|
|
L_VF16: NOP LQI VF16,(VI02++)
|
|||
|
|
L_VF17: NOP LQI VF17,(VI02++)
|
|||
|
|
L_VF18: NOP LQI VF18,(VI02++)
|
|||
|
|
L_VF19: NOP LQI VF19,(VI02++)
|
|||
|
|
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBEQ VI02,VI05,VUPrimEnd
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
L_VF20: NOP LQI VF20,(VI02++)
|
|||
|
|
L_VF21: NOP LQI VF21,(VI02++)
|
|||
|
|
L_VF22: NOP LQI VF22,(VI02++)
|
|||
|
|
L_VF23: NOP LQI.xyz VF23,(VI02++)
|
|||
|
|
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBEQ VI02,VI05,VUPrimEnd
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
L_VF24: NOP LQI.xyz VF24,(VI02++)
|
|||
|
|
L_VF25: NOP LQI VF25,(VI02++)
|
|||
|
|
L_VF26: NOP LQI VF26,(VI02++)
|
|||
|
|
L_VF27: NOP LQI VF27,(VI02++)
|
|||
|
|
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBEQ VI02,VI05,VUPrimEnd
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
L_VF28: NOP LQI VF28,(VI02++)
|
|||
|
|
L_VF29: NOP LQI VF29,(VI02++)
|
|||
|
|
L_VF30: NOP LQI VF30,(VI02++)
|
|||
|
|
L_VF31: NOP LQI VF31,(VI02++)
|
|||
|
|
|
|||
|
|
VUPrimEnd:
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; process a GS prim
|
|||
|
|
; -----------------
|
|||
|
|
; by simply stepping the data pointer over it.
|
|||
|
|
|
|||
|
|
GSPrim: NOP LQ VF01,0(VI05) ; prefetch next tag
|
|||
|
|
NOP ISUBIU VI12,VI02,1 ; save the current tag address (see clipping code)
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP IADDIU VI02,VI05,1 ; step data pointer past next tag
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
CullPrim:
|
|||
|
|
NOP ISUBIU VI01,VI00,1
|
|||
|
|
NOP MFIR.z VF01,VI01
|
|||
|
|
NOP SQ.z VF01,-1(VI02)
|
|||
|
|
NOP IADD VI02,VI02,VI06
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; zpush
|
|||
|
|
; -----
|
|||
|
|
; m_localToViewport[0][2] += m_localToViewport[0][3] * zPush * I / FogAlpha;
|
|||
|
|
; m_localToViewport[1][2] += m_localToViewport[1][3] * zPush * I / FogAlpha;
|
|||
|
|
; m_localToViewport[2][2] += m_localToViewport[2][3] * zPush * I / FogAlpha;
|
|||
|
|
; m_localToViewport[3][2] += m_localToViewport[3][3] * zPush * I / FogAlpha;
|
|||
|
|
; on entry, zPush is held in VF01w (from the tag)
|
|||
|
|
|
|||
|
|
; new version, frees up VF12-15
|
|||
|
|
; still needs optimising
|
|||
|
|
|
|||
|
|
ZPush:
|
|||
|
|
MULi.w VF02,VF10,I NOP
|
|||
|
|
|
|||
|
|
SUB.w VF28,VF00,VF00 NOP
|
|||
|
|
ADDz.x VF28,VF00,VF12z NOP
|
|||
|
|
ADDz.y VF28,VF00,VF13z NOP
|
|||
|
|
ADDz.z VF28,VF00,VF14z NOP
|
|||
|
|
ADDz.w VF28,VF28,VF15z NOP
|
|||
|
|
|
|||
|
|
MULw.w VF04,VF12,VF02w MR32.z VF02,VF01
|
|||
|
|
MULw.w VF05,VF13,VF02w NOP
|
|||
|
|
MULw.w VF06,VF14,VF02w NOP
|
|||
|
|
MULw.w VF07,VF15,VF02w NOP
|
|||
|
|
ADDA.z ACC,VF00,VF12 NOP
|
|||
|
|
MADDw.z VF12,VF02,VF04 NOP
|
|||
|
|
ADDA.z ACC,VF00,VF13 NOP
|
|||
|
|
MADDw.z VF13,VF02,VF05 NOP
|
|||
|
|
ADDA.z ACC,VF00,VF14 LQI VF01,(VI02++)
|
|||
|
|
MADDw.z VF14,VF02,VF06 NOP
|
|||
|
|
ADDA.z ACC,VF00,VF15 B NextPrim
|
|||
|
|
MADDw.z VF15,VF02,VF07 NOP
|
|||
|
|
|
|||
|
|
RestoreZPush:
|
|||
|
|
|
|||
|
|
ADDx.z VF12,VF00,VF28x NOP
|
|||
|
|
ADDy.z VF13,VF00,VF28y NOP
|
|||
|
|
ADDz.z VF14,VF00,VF28z NOP
|
|||
|
|
ADDw.z VF15,VF00,VF28w NOP
|
|||
|
|
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; vertex projection
|
|||
|
|
; -----------------
|
|||
|
|
; just transforms and projects the vertex coords, used for non-textured meshes
|
|||
|
|
|
|||
|
|
Proj1:
|
|||
|
|
; first some hackery added in as a bit of an afterthought, to support single-sided and colouring of meshes
|
|||
|
|
|
|||
|
|
NOP IADDIU VI11,VI00,0x0800
|
|||
|
|
NOP IAND VI01,VI01,VI11
|
|||
|
|
NOP ISUBIU VI10,VI00,FOGE+1
|
|||
|
|
NOP IAND VI14,VI14,VI10
|
|||
|
|
NOP IBNE VI01,VI00,SingleSided
|
|||
|
|
NOP IADDIU VI01,VI00,Label00
|
|||
|
|
|
|||
|
|
Label00:NOP IADDIU VI01,VI00,COLR
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP ISUB VI14,VI14,VI01
|
|||
|
|
NOP IBNE VI01,VI00,ApplyColour
|
|||
|
|
NOP IADDIU VI01,VI00,Label0
|
|||
|
|
|
|||
|
|
; now branch to the appropriate rendering code
|
|||
|
|
|
|||
|
|
Label0: NOP IBEQ VI14,VI00,Proj2
|
|||
|
|
NOP IADDIU VI01,VI00,CULL
|
|||
|
|
|
|||
|
|
NOP IADDIU VI11,VI00,CLIP
|
|||
|
|
NOP IBEQ VI14,VI01,Cull
|
|||
|
|
NOP IADDIU VI01,VI00,Cull
|
|||
|
|
|
|||
|
|
NOP IBEQ VI14,VI11,Clip
|
|||
|
|
NOP ISW.w VI01,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B CullPrim
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
Proj2:
|
|||
|
|
|
|||
|
|
.if 1
|
|||
|
|
|
|||
|
|
; fog version
|
|||
|
|
|
|||
|
|
; f = min(f0+k/w,1) = f0+(1/w)(1-f0)min(w0,w)
|
|||
|
|
; where k=w0(1-f0)
|
|||
|
|
|
|||
|
|
NOP LOI 0x45000FFF
|
|||
|
|
MULi.w VF25,VF00,I NOP ; VF25w = 2^11 + 1 - 2^-12
|
|||
|
|
SUBw.w VF25,VF25,VF23w NOP ; VF25w = 2^11 + 1-f0 - 2^-12
|
|||
|
|
NOP LOI 8
|
|||
|
|
ADDi.w VF26,VF25,I NOP ; VF26w = VF25w + ADC
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
LoopP:
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ.xyzw VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 MTIR VI07,VF01w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP DIV Q,VF23w,VF03w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MINI.w VF03,VF03,VF24w NOP
|
|||
|
|
NOP IBLTZ VI07,CullP
|
|||
|
|
NOP NOP
|
|||
|
|
MULAw ACC,VF00,VF25w NOP
|
|||
|
|
MADDq.xyzw VF04,VF03,Q NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
FTOI4.xyz VF04,VF04 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP SQ.xyzw VF04,-1(VI02)
|
|||
|
|
NOP IBNE VI02,VI05,LoopP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullP: MULAw ACC,VF00,VF26w NOP
|
|||
|
|
MADDq.xyzw VF04,VF03,Q NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
FTOI4.xyz VF04,VF04 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP SQ.xyzw VF04,-1(VI02)
|
|||
|
|
NOP IBNE VI02,VI05,LoopP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyzw VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF02,VF01 MTIR VI07,VF01w
|
|||
|
|
MADDAx ACC,VF12,VF02x IADD VI03,VI03,VI04
|
|||
|
|
MADDAy ACC,VF13,VF02y LQ.xyzw VF01,-1(VI03)
|
|||
|
|
MADDz VF04,VF14,VF02z NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 DIV Q,VF23w,VF04w
|
|||
|
|
MINI.w VF04,VF04,VF24w IADD VI03,VI03,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x IBLTZ VI07,CullP0
|
|||
|
|
MADDAx ACC,VF12,VF02x MTIR VI07,VF01w
|
|||
|
|
MADDAy ACC,VF13,VF02y LQ.xyzw VF01,-1(VI03)
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
MULAw ACC,VF00,VF25w NOP
|
|||
|
|
|
|||
|
|
LoopP: MADDq.xyzw VF05,VF04,Q MOVE.xyz VF04,VF03
|
|||
|
|
ITOF4.xyz VF02,VF01 IADD VI02,VI02,VI04
|
|||
|
|
MINI.w VF04,VF03,VF24w DIV Q,VF23w,VF03w
|
|||
|
|
ADDAx ACC,VF15,VF00x IADD VI03,VI03,VI04
|
|||
|
|
FTOI4.xyz VF05,VF05 IBLTZ VI07,CullP
|
|||
|
|
MADDAx ACC,VF12,VF02x MTIR VI07,VF01w
|
|||
|
|
MADDAy ACC,VF13,VF02y LQ.xyzw VF01,-1(VI03)
|
|||
|
|
MADDz VF03,VF14,VF02z IBNE VI02,VI05,LoopP
|
|||
|
|
MULAw ACC,VF00,VF25w SQ.xyzw VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullP0: MADDAy ACC,VF13,VF02y LQ.xyzw VF01,-1(VI03)
|
|||
|
|
MADDz VF03,VF14,VF02z B LoopP
|
|||
|
|
MULAw ACC,VF00,VF26w NOP
|
|||
|
|
|
|||
|
|
CullP: MADDAy ACC,VF13,VF02y LQ.xyzw VF01,-1(VI03)
|
|||
|
|
MADDz VF03,VF14,VF02z IBNE VI02,VI05,LoopP
|
|||
|
|
MULAw ACC,VF00,VF26w SQ.xyzw VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0 ; source ptr = dest ptr
|
|||
|
|
|
|||
|
|
LoopP:
|
|||
|
|
NOP IADD VI03,VI03,VI04 ; step source ptr
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex coords
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP ; vertex coords to float
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDz VF02,VF14,VF01z NOP ; row 2 view transform
|
|||
|
|
NOP DIV Q,VF00w,VF02w ; calc 1/w
|
|||
|
|
NOP WAITQ
|
|||
|
|
MULq.xyz VF03,VF02,Q NOP ; homogeneous divide
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step dest ptr
|
|||
|
|
NOP SQ.xyz VF03,-1(VI02) ; store screen coords
|
|||
|
|
NOP IBNE VI02,VI05,LoopP ; loop
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
.else
|
|||
|
|
.if 1
|
|||
|
|
|
|||
|
|
; fairly optimised version
|
|||
|
|
; 7 cycles per vertex
|
|||
|
|
|
|||
|
|
; loop prologue
|
|||
|
|
NOP IADD VI03,VI02,VI04 ; init/step source ptr
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,-1(VI03) ; row 3 view transform ; get 1st vertex
|
|||
|
|
ITOF4.xyz VF02,VF01 IADD VI03,VI03,VI04 ; 1st vertex to float ; step source ptr
|
|||
|
|
MADDAx ACC,VF12,VF02x LQ.xyz VF01,-1(VI03) ; row 0 view transform ; get 2nd vertex
|
|||
|
|
MADDAy ACC,VF13,VF02y IADD VI03,VI03,VI04 ; row 1 view transform ; step source ptr
|
|||
|
|
MADDz VF04,VF14,VF02z NOP ; row 2 view transform
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ.xyz VF01,-1(VI03) ; 2nd vertex to float ; get 3rd vertex
|
|||
|
|
ADDAx ACC,VF15,VF00x DIV Q,VF00w,VF04w ; row 3 view transform ; calc 1/w
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP ; row 1 view transform
|
|||
|
|
MADDz VF03,VF14,VF02z NOP ; row 2 view transform
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP ; 3rd vertex to float
|
|||
|
|
|
|||
|
|
; projection loop
|
|||
|
|
LoopP: NOP IADD VI03,VI03,VI04 ; step source ptr
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,-1(VI03) ; row 3 view transform ; get vertex coords
|
|||
|
|
MULq.xyz VF05,VF04,Q DIV Q,VF00w,VF03w ; homogeneous div (xyz)/w ; calc 1/w
|
|||
|
|
MADDAx ACC,VF12,VF02x IADD VI02,VI02,VI04 ; row 0 view transform ; step destination ptr
|
|||
|
|
MADDAy ACC,VF13,VF02y MOVE.xyz VF04,VF03 ; row 1 view transform ; advance vertex queue
|
|||
|
|
MADDz VF03,VF14,VF02z IBNE VI02,VI05,LoopP ; row 2 view transform ; loop
|
|||
|
|
ITOF4.xyz VF02,VF01 SQ.xyz VF05,-1(VI02) ; vertex coord to float ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
; very optimised version
|
|||
|
|
; 6 cycles per vertex, but uses a lot of code space
|
|||
|
|
|
|||
|
|
; loop prologue
|
|||
|
|
NOP IADD VI01,VI02,VI04
|
|||
|
|
NOP IADD VI03,VI01,VI04
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex 1
|
|||
|
|
NOP LQ.xyz VF05,-1(VI01) ; get vertex 0
|
|||
|
|
ITOF4.xyz VF02,VF01 IADD VI01,VI03,VI04 ; vertex 1 to float
|
|||
|
|
ITOF4.xyz VF06,VF05 IADD VI03,VI01,VI04 ; vertex 0 to float
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,-1(VI03) ; get vertex 3
|
|||
|
|
MADDAx ACC,VF12,VF02x LQ.xyz VF05,-1(VI01) ; get vertex 2
|
|||
|
|
MADDAy ACC,VF13,VF02y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF02,VF14,VF02z IADDIU VI01,VI00,1
|
|||
|
|
ADDAx ACC,VF15,VF00x IAND VI07,VI15,VI01 ; test for NLOOP odd
|
|||
|
|
MADDAx ACC,VF12,VF06x NOP
|
|||
|
|
MADDAy ACC,VF13,VF06y NOP
|
|||
|
|
MADDz VF07,VF14,VF06z ERCPR P,VF02w
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP ; vertex 3 to float
|
|||
|
|
ITOF4.xyz VF06,VF05 LQ.xyz VF05,-1(VI03) ; vertex 2 to float ; get vertex 4
|
|||
|
|
ADDAx ACC,VF15,VF00x DIV Q,VF00w,VF07w
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF03,VF14,VF01z IBEQ VI07,VI00,LoopP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
NOP ISUB VI05,VI05,VI04 ; finish 1 vertex early if NLOOP odd
|
|||
|
|
|
|||
|
|
LoopP: MADDAx ACC,VF12,VF06x LQ.xyz VF01,-1(VI03) ; row 0 vertex transform B ; get vertex A
|
|||
|
|
MADDAy ACC,VF13,VF06y IADD VI03,VI03,VI04 ; row 1 vertex transform B ; step source ptr
|
|||
|
|
MULq.xyz VF04,VF07,Q ERCPR P,VF03w ; homogeneous div (xyz)/wB' ; calculate 1/wA'
|
|||
|
|
MADDz VF07,VF14,VF06z MFP.w VF02,P ; row 2 vertex transform B ; get 1/wA
|
|||
|
|
ITOF4.xyz VF01,VF01 IADD VI02,VI02,VI04 ; vertex A to float ; step destination ptr
|
|||
|
|
ITOF4.xyz VF06,VF05 LQ.xyz VF05,-1(VI03) ; vertex B' to float ; get vertex B
|
|||
|
|
ADDAx ACC,VF15,VF00x SQ.xyz VF04,-1(VI02) ; row 3 vertex transform A ; store screen coords B'
|
|||
|
|
|
|||
|
|
MULw.xyz VF04,VF02,VF02w DIV Q,VF00w,VF07w ; homogeneous div (xyz)/wA ; calc 1/wB
|
|||
|
|
MADDAx ACC,VF12,VF01x IADD VI02,VI02,VI04 ; row 0 vertex transform A ; step destination ptr
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04 ; row 1 vertex transform A ; step source ptr
|
|||
|
|
MADDz VF02,VF14,VF01z IBEQ VI02,VI05,QuitP ; row 2 vertex transform A ; continue or quit
|
|||
|
|
ADDAx ACC,VF15,VF00x SQ.xyz VF04,-1(VI02) ; row 3 vertex transform B' ; store screen coords A
|
|||
|
|
|
|||
|
|
MADDAx ACC,VF12,VF06x LQ.xyz VF01,-1(VI03) ; row 0 vertex transform B' ; get vertex A'
|
|||
|
|
MADDAy ACC,VF13,VF06y IADD VI03,VI03,VI04 ; row 1 vertex transform B' ; step source ptr
|
|||
|
|
MULq.xyz VF04,VF07,Q ERCPR P,VF02w ; homogeneous div (xyz)/wB ; calc 1/wA
|
|||
|
|
MADDz VF07,VF14,VF06z MFP.w VF03,P ; row 2 vertex transform B' ; get 1/wA'
|
|||
|
|
ITOF4.xyz VF01,VF01 IADD VI02,VI02,VI04 ; vertex A' to float ; step destination ptr
|
|||
|
|
ITOF4.xyz VF06,VF05 LQ.xyz VF05,-1(VI03) ; vertex B to float ; get vertex B'
|
|||
|
|
ADDAx ACC,VF15,VF00x SQ.xyz VF04,-1(VI02) ; row 3 vertex transform A' ; store screen coords B
|
|||
|
|
|
|||
|
|
MULw.xyz VF04,VF03,VF03w DIV Q,VF00w,VF07w ; homogeneous div (xyz)/wA' ; calc 1/wB'
|
|||
|
|
MADDAx ACC,VF12,VF01x IADD VI02,VI02,VI04 ; row 0 vertex transform A' ; step destination ptr
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04 ; row 1 vertex transform A' ; step source ptr
|
|||
|
|
MADDz VF03,VF14,VF01z IBNE VI02,VI05,LoopP ; row 2 vertex transform A' ; loop or quit
|
|||
|
|
ADDAx ACC,VF15,VF00x SQ.xyz VF04,-1(VI02) ; row 3 vertex transform B ; store screen coords A'
|
|||
|
|
|
|||
|
|
QuitP: NOP IBEQ VI07,VI00,EndP ; finish if NLOOP was even
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF04,VF07,Q IADD VI02,VI02,VI04 ; homogeneous div (xyz)/wB ; step source ptr
|
|||
|
|
NOP SQ.xyz VF04,-1(VI02) ; store screen coords B
|
|||
|
|
|
|||
|
|
EndP: NOP B NextPrim ; back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; triangle culling
|
|||
|
|
; ----------------
|
|||
|
|
; the per-triangle culling version of Proj
|
|||
|
|
|
|||
|
|
Cull:
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 1
|
|||
|
|
|
|||
|
|
; fog version
|
|||
|
|
|
|||
|
|
NOP LOI 0x45000FFF
|
|||
|
|
MULi.w VF25,VF00,I NOP ; VF25w = 2^11 + 1 - 2^-12
|
|||
|
|
SUBw.w VF25,VF25,VF23w NOP ; VF25w = 2^11 + 1-f0 - 2^-12
|
|||
|
|
|
|||
|
|
NOP IADDIU VI10,VI00,0x4000
|
|||
|
|
NOP IADDIU VI10,VI10,0x4000
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
LoopK: NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ.xyzw VF01,-1(VI03)
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 MTIR VI07,VF01w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF23w,VF03w
|
|||
|
|
MADDw VF04,VF11,VF03w NOP
|
|||
|
|
MINI.w VF03,VF03,VF24 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w NOP
|
|||
|
|
MULAw ACC,VF00,VF25w NOP
|
|||
|
|
MADDq.xyzw VF05,VF03,Q NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP IBNE VI01,VI00,CullK
|
|||
|
|
FTOI4.xyz VF06,VF05 MTIR VI01,VF05w
|
|||
|
|
NOP IOR VI01,VI01,VI07
|
|||
|
|
NOP MFIR.w VF06,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopK
|
|||
|
|
NOP SQ.xyzw VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullK: NOP IOR VI01,VI01,VI10
|
|||
|
|
NOP MFIR.w VF06,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopK
|
|||
|
|
NOP SQ.xyzw VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y MTIR VI06,VF01w
|
|||
|
|
MADDz VF02,VF14,VF01z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ VF01,-1(VI03)
|
|||
|
|
ADDx.xyz VF04,VF02,VF00x DIV Q,VF23w,VF02w
|
|||
|
|
MULA ACC,VF10,VF02 NOP
|
|||
|
|
MADDw VF03,VF11,VF02w NOP
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF01x IADDIU VI07,VI06,0
|
|||
|
|
MADDAy ACC,VF13,VF01y MTIR VI06,VF01w
|
|||
|
|
MADDz VF02,VF14,VF01z NOP
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w NOP
|
|||
|
|
|
|||
|
|
LoopK: MULAw ACC,VF00,VF25w IADD VI03,VI03,VI04
|
|||
|
|
MADDq VF05,VF04,Q LQ VF01,-1(VI03)
|
|||
|
|
ADDx.xyz VF04,VF02,VF00x DIV Q,VF23w,VF02w
|
|||
|
|
MULA ACC,VF10,VF02 IADD VI02,VI02,VI04
|
|||
|
|
MADDw VF03,VF11,VF02w FCAND VI01,0x03FFFF
|
|||
|
|
ITOF4.xyz VF01,VF01 IBNE VI01,VI00,CullK
|
|||
|
|
MINIw.w VF04,VF02,VF24w MTIR VI01,VF05w
|
|||
|
|
FTOI4.xyz VF06,VF05 IOR VI01,VI01,VI07
|
|||
|
|
ADDAx ACC,VF15,VF00x MFIR.w VF06,VI01
|
|||
|
|
MADDAx ACC,VF12,VF01x IADDIU VI07,VI06,0
|
|||
|
|
MADDAy ACC,VF13,VF01y MTIR VI06,VF01w
|
|||
|
|
MADDz VF02,VF14,VF01z IBNE VI02,VI05,LoopK
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w SQ VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullK: FTOI4.xyz VF06,VF05 IOR VI01,VI01,VI10
|
|||
|
|
ADDAx ACC,VF15,VF00x MFIR.w VF06,VI01
|
|||
|
|
MADDAx ACC,VF12,VF01x IADDIU VI07,VI06,0
|
|||
|
|
MADDAy ACC,VF13,VF01y MTIR VI06,VF01w
|
|||
|
|
MADDz VF02,VF14,VF01z IBNE VI02,VI05,LoopK
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w SQ VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0 ; source ptr = dest ptr
|
|||
|
|
FTOI15.w VF05,VF00 NOP ; set VF05w=0x8000 (for ADC bit)
|
|||
|
|
|
|||
|
|
LoopK: NOP IADD VI03,VI03,VI04 ; step source ptr
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex coords
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP ; vertex coords to float
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP ; row 1 view transform
|
|||
|
|
MADDz VF03,VF14,VF02z NOP ; row 2 view transform
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF00w,VF03w ; inv viewport scale ; calc 1/w
|
|||
|
|
MADDw VF06,VF11,VF03w NOP ; inv viewport offset
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF06xyz,VF06w NOP ; generate outcodes
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF05,VF03,Q NOP ; homogeneous divide
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step dest ptr
|
|||
|
|
NOP FCAND VI01,0x03FFFF ; test last 3 outcodes
|
|||
|
|
NOP IBNE VI01,VI00,CullK ; cull if all out
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopK ; loop
|
|||
|
|
NOP SQ.xyz VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
CullK: NOP IBNE VI02,VI05,LoopK ; loop
|
|||
|
|
NOP SQ VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
FTOI15.w VF05,VF00 IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF02,VF01 IADD VI03,VI03,VI04
|
|||
|
|
MADDAx ACC,VF12,VF02x LQ.xyz VF01,-1(VI03)
|
|||
|
|
MADDAy ACC,VF13,VF02y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF04,VF14,VF02z NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ.xyz VF01,-1(VI03)
|
|||
|
|
MULA ACC,VF10,VF04 DIV Q,VF00w,VF04w
|
|||
|
|
MADDw VF06,VF11,VF04w NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
|
|||
|
|
LoopK: CLIPw.xyz VF06xyz,VF06w IADD VI03,VI03,VI04
|
|||
|
|
MULq.xyz VF05,VF04,Q IADD VI02,VI02,VI04
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ.xyz VF01,-1(VI03)
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF00w,VF03w
|
|||
|
|
MADDw VF06,VF11,VF03w FCAND VI01,0x03FFFF
|
|||
|
|
ADDAx ACC,VF15,VF00x IBNE VI01,VI00,CullK
|
|||
|
|
MADDAx ACC,VF12,VF02x MOVE.xyz VF04,VF03
|
|||
|
|
MADDAy ACC,VF13,VF02y IBNE VI02,VI05,LoopK
|
|||
|
|
MADDz VF03,VF14,VF02z SQ.xyz VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
CullK: MADDAy ACC,VF13,VF02y IBNE VI02,VI05,LoopK
|
|||
|
|
MADDz VF03,VF14,VF02z SQ VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; vertex projection with perspective texturing
|
|||
|
|
; --------------------------------------------
|
|||
|
|
; transforms and projects vertex coords, and applies perspective to texture coords
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
PTex1:
|
|||
|
|
|
|||
|
|
; first some hackery added in as a bit of an afterthought, to support single-sided and colouring of meshes
|
|||
|
|
; and switch between VU1-fogging and standard version of rendering code
|
|||
|
|
|
|||
|
|
NOP IADDIU VI10,VI00,0x0800
|
|||
|
|
NOP IAND VI10,VI01,VI10
|
|||
|
|
NOP IADDIU VI11,VI00,0x3000
|
|||
|
|
NOP IAND VI11,VI01,VI11
|
|||
|
|
NOP IBNE VI10,VI00,SingleSided
|
|||
|
|
NOP IADDIU VI01,VI00,Label1
|
|||
|
|
Label1:
|
|||
|
|
NOP IADDIU VI01,VI00,COLR
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP ISUB VI14,VI14,VI01
|
|||
|
|
NOP IBNE VI01,VI00,ApplyColour
|
|||
|
|
NOP IADDIU VI01,VI00,Label2
|
|||
|
|
Label2:
|
|||
|
|
|
|||
|
|
; test for fog enable
|
|||
|
|
NOP MFIR.y VF02,VI11
|
|||
|
|
NOP IADDIU VI01,VI00,FOGE
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP ISUB VI14,VI14,VI01 ; clear FOGE flag
|
|||
|
|
ITOF12.y VF02,VF02 IBNE VI01,VI00,PTexFog
|
|||
|
|
NOP IADDIU VI01,VI00,3
|
|||
|
|
NOP LOI 0x302E4000
|
|||
|
|
ADDAi.y ACC,VF00,I LOI 0x2A800000
|
|||
|
|
MADDi.y VF01,VF02,I IBEQ VI04,VI01,FGE0 ; keep uv-clamp flags
|
|||
|
|
NOP LOI 0x4F800000
|
|||
|
|
MULi.y VF01,VF01,I NOP
|
|||
|
|
FGE0: NOP SQ.y VF01,-1(VI02) ; clear FGE bit
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP IBEQ VI14,VI00,PTex2
|
|||
|
|
NOP IADDIU VI01,VI00,CULL
|
|||
|
|
|
|||
|
|
NOP IADDIU VI11,VI00,CLIP
|
|||
|
|
NOP IBEQ VI14,VI01,CullPTex
|
|||
|
|
NOP IADDIU VI01,VI00,CullPTex
|
|||
|
|
|
|||
|
|
NOP IBEQ VI14,VI11,Clip
|
|||
|
|
NOP ISW.w VI01,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B Shadow
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
PTexFog:
|
|||
|
|
|
|||
|
|
NOP IBEQ VI14,VI00,PTex2F
|
|||
|
|
NOP IADDIU VI01,VI00,CULL
|
|||
|
|
|
|||
|
|
NOP IADDIU VI11,VI00,CLIP
|
|||
|
|
NOP IBEQ VI14,VI01,CullPTexF
|
|||
|
|
NOP IADDIU VI01,VI00,CullPTexF
|
|||
|
|
|
|||
|
|
NOP IBEQ VI14,VI11,Clip
|
|||
|
|
NOP ISW.w VI01,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B Shadow
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
PTex2F:
|
|||
|
|
; fog version
|
|||
|
|
|
|||
|
|
NOP LOI 0x45000FFF
|
|||
|
|
MULi.w VF25,VF00,I NOP ; VF25w = 2^11 + 1 - 2^-12
|
|||
|
|
SUBw.w VF25,VF25,VF23w NOP ; VF25w = 2^11 + 1-f0 - 2^-12
|
|||
|
|
NOP LOI 8
|
|||
|
|
ADDi.w VF26,VF25,I NOP ; VF26w = VF25w + ADC
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
NOP MR32.z VF07,VF00
|
|||
|
|
|
|||
|
|
|
|||
|
|
LoopPTF:NOP LQ.xy VF06,0(VI03)
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ.xyzw VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF12.xy VF07,VF06 NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 MTIR VI07,VF01w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP DIV Q,VF23w,VF03w
|
|||
|
|
MINI.w VF03,VF03,VF24 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBLTZ VI07,PTCullF
|
|||
|
|
NOP NOP
|
|||
|
|
MULAw ACC,VF00,VF25w NOP
|
|||
|
|
MULq.xyz VF08,VF07,Q NOP
|
|||
|
|
MADDq VF04,VF03,Q NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP SQ.xyz VF08,0(VI02)
|
|||
|
|
FTOI4.xyz VF04,VF04 NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopPTF
|
|||
|
|
NOP SQ.xyzw VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
PTCullF:MULAw ACC,VF00,VF26w NOP
|
|||
|
|
MULq.xyz VF08,VF07,Q NOP
|
|||
|
|
MADDq VF04,VF03,Q NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP SQ.xyz VF08,0(VI02)
|
|||
|
|
FTOI4.xyz VF04,VF04 NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopPTF
|
|||
|
|
NOP SQ.xyzw VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF01,VF01 LQ.xy VF07,0(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y LQ.xy VF05,0(VI03)
|
|||
|
|
MADDz VF03,VF14,VF01z IADD VI03,VI03,VI04
|
|||
|
|
MINI.w VF03,VF03,VF24 DIV Q,VF23w,VF03w
|
|||
|
|
ITOF12.xy VF07,VF07 MTIR VI07,VF01w
|
|||
|
|
ITOF12.xy VF06,VF05 LQ VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x MR32.z VF07,VF00
|
|||
|
|
|
|||
|
|
LoopPTF:MADDAx ACC,VF12,VF01x LQ.xy VF05,0(VI03)
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04
|
|||
|
|
MULq VF04,VF03,Q IBLTZ VI07,PTCullF
|
|||
|
|
MADDz VF03,VF14,VF01z MTIR VI07,VF01w
|
|||
|
|
MULq.xyz VF08,VF07,Q LQ VF01,-1(VI03)
|
|||
|
|
ADDx.xy VF07,VF06,VF00x IADDIU VI01,VI02,0
|
|||
|
|
FTOI4.xyz VF04,VF04 IADD VI02,VI02,VI04
|
|||
|
|
ADD.w VF04,VF04,VF25 DIV Q,VF23w,VF03w
|
|||
|
|
ITOF4.xyz VF01,VF01 SQ.xyz VF08,0(VI01)
|
|||
|
|
MINI.w VF03,VF03,VF24 NOP
|
|||
|
|
ITOF12.xy VF06,VF05 IBNE VI02,VI05,LoopPTF
|
|||
|
|
ADDAx ACC,VF15,VF00x SQ VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
PTCullF:MULq.xyz VF08,VF07,Q LQ VF01,-1(VI03)
|
|||
|
|
ADDx.xy VF07,VF06,VF00x IADDIU VI01,VI02,0
|
|||
|
|
FTOI4.xyz VF04,VF04 IADD VI02,VI02,VI04
|
|||
|
|
ADD.w VF04,VF04,VF26 DIV Q,VF23w,VF03w
|
|||
|
|
ITOF4.xyz VF01,VF01 SQ.xyz VF08,0(VI01)
|
|||
|
|
MINI.w VF03,VF03,VF24 NOP
|
|||
|
|
ITOF12.xy VF06,VF05 IBNE VI02,VI05,LoopPTF
|
|||
|
|
ADDAx ACC,VF15,VF00x SQ VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; non-fogged version
|
|||
|
|
|
|||
|
|
PTex2:
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0 ; source ptr = dest ptr
|
|||
|
|
NOP MR32.z VF04,VF00 ; set 1 in (s,t,1)
|
|||
|
|
|
|||
|
|
LoopPT: NOP LQ.xy VF04,0(VI03) ; get texture coords
|
|||
|
|
NOP IADD VI03,VI03,VI04 ; step source ptr
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex coords
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF12.xy VF04,VF04 NOP ; texture coords to float
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP ; vertex coords to float
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDz VF02,VF14,VF01z NOP ; row 2 view transform
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP DIV Q,VF23w,VF02w ; calc 1/w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF05,VF04,Q NOP ; homogeneous div (st1)/w
|
|||
|
|
MULq.xyz VF03,VF02,Q NOP ; homogeneous div (xyz)/w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
FTOI4.xyz VF03,VF03 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP SQ.xyz VF05,0(VI02) ; store texture coords
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step dest ptr
|
|||
|
|
NOP SQ.xyz VF03,-1(VI02) ; store screen coords
|
|||
|
|
NOP IBNE VI02,VI05,LoopPT ; loop
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF01,VF01 LQ.xy VF05,0(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF01x LQ.xy VF06,0(VI03)
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF03,VF14,VF01z LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF12.xy VF07,VF05 NOP
|
|||
|
|
ITOF4.xyz VF01,VF01 MR32.z VF07,VF00
|
|||
|
|
ADDAx ACC,VF15,VF00x DIV Q,VF23w,VF03w
|
|||
|
|
MADDAx ACC,VF12,VF01x LQ.xy VF05,0(VI03)
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF02,VF14,VF01z LQ.xyz VF01,-1(VI03)
|
|||
|
|
MULq.xyz VF08,VF07,Q WAITQ
|
|||
|
|
MULq.xyz VF04,VF03,Q NOP
|
|||
|
|
|
|||
|
|
LoopPT: ITOF12.xy VF07,VF06 MOVE.xy VF06,VF05
|
|||
|
|
ITOF4.xyz VF01,VF01 DIV Q,VF23w,VF02w
|
|||
|
|
ADDx.xyz VF03,VF02,VF00x SQ.xyz VF08,0(VI02)
|
|||
|
|
FTOI4.xyz VF04,VF04 IADD VI02,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF01x LQ.xy VF05,0(VI03)
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF02,VF14,VF01z LQ.xyz VF01,-1(VI03)
|
|||
|
|
MULq.xyz VF08,VF07,Q IBNE VI02,VI05,LoopPT
|
|||
|
|
MULq.xyz VF04,VF03,Q SQ.xyz VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; triangle culling and perspective texturing
|
|||
|
|
|
|||
|
|
|
|||
|
|
CullPTexF:
|
|||
|
|
|
|||
|
|
; fog version
|
|||
|
|
|
|||
|
|
NOP LOI 0x45000FFF
|
|||
|
|
MULi.w VF25,VF00,I NOP ; VF25w = 2^11 + 1 - 2^-12
|
|||
|
|
SUBw.w VF25,VF25,VF23w NOP ; VF25w = 2^11 + 1-f0 - 2^-12
|
|||
|
|
|
|||
|
|
NOP IADDIU VI10,VI00,0x4000
|
|||
|
|
NOP IADDIU VI10,VI10,0x4000
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
NOP MR32.z VF07,VF00
|
|||
|
|
|
|||
|
|
|
|||
|
|
LoopKPTF:
|
|||
|
|
NOP LQ.xy VF07,0(VI03)
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ.xyzw VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF12.xy VF07,VF07 NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 MTIR VI07,VF01w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF23w,VF03w
|
|||
|
|
MADDw VF04,VF11,VF03w NOP
|
|||
|
|
MINI.w VF03,VF03,VF24 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w NOP
|
|||
|
|
MULAw ACC,VF00,VF25w NOP
|
|||
|
|
MULq.xyz VF08,VF07,Q NOP
|
|||
|
|
MADDq VF05,VF03,Q NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP IBNE VI01,VI00,CullKPTF
|
|||
|
|
FTOI4.xyz VF06,VF05 SQ.xyz VF08,0(VI02)
|
|||
|
|
NOP MTIR VI11,VF05w
|
|||
|
|
NOP IOR VI11,VI11,VI07
|
|||
|
|
NOP MFIR.w VF06,VI11
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopKPTF
|
|||
|
|
NOP SQ.xyzw VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullKPTF:
|
|||
|
|
NOP MTIR VI11,VF05w
|
|||
|
|
NOP IOR VI11,VI11,VI10
|
|||
|
|
NOP MFIR.w VF06,VI11
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopKPTF
|
|||
|
|
NOP SQ.xyzw VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ VF04,-1(VI03)
|
|||
|
|
ITOF4.xyz VF04,VF04 LQ.xy VF07,0(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF04x MTIR VI07,VF04w
|
|||
|
|
MADDAy ACC,VF13,VF04y LQ.xy VF06,0(VI03)
|
|||
|
|
MADDz VF04,VF14,VF04z IADD VI03,VI03,VI04
|
|||
|
|
ITOF12.xy VF07,VF07 LQ VF01,-1(VI03)
|
|||
|
|
MULA ACC,VF10,VF04 DIV Q,VF23w,VF04w
|
|||
|
|
MADDw VF03,VF11,VF04w MR32.z VF07,VF00
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
MINI.w VF04,VF04,VF24 NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP
|
|||
|
|
MADDz VF02,VF14,VF01z NOP
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w NOP
|
|||
|
|
|
|||
|
|
LoopKPTF:
|
|||
|
|
MULq.xyz VF08,VF07,Q MTIR VI06,VF01w
|
|||
|
|
ITOF12.xy VF07,VF06 LQ.xy VF06,0(VI03)
|
|||
|
|
MULAw ACC,VF00,VF25w IADD VI03,VI03,VI04
|
|||
|
|
MADDq VF05,VF04,Q LQ VF01,-1(VI03)
|
|||
|
|
ADDx.xyz VF04,VF02,VF00x FCAND VI01,0x03FFFF
|
|||
|
|
MULA ACC,VF10,VF02 DIV Q,VF23w,VF02w
|
|||
|
|
MADDw VF03,VF11,VF02w SQ.xyz VF08,0(VI02)
|
|||
|
|
ITOF4.xyz VF01,VF01 IBNE VI01,VI00,CullKPTF
|
|||
|
|
MINI.w VF04,VF02,VF24 MTIR VI11,VF05w
|
|||
|
|
FTOI4.xyz VF05,VF05 IOR VI11,VI11,VI07
|
|||
|
|
ADDAx ACC,VF15,VF00x MFIR.w VF05,VI11
|
|||
|
|
MADDAx ACC,VF12,VF01x IADD VI02,VI02,VI04
|
|||
|
|
MADDAy ACC,VF13,VF01y IADDIU VI07,VI06,0
|
|||
|
|
MADDz VF02,VF14,VF01z IBNE VI02,VI05,LoopKPTF
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w SQ.xyzw VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullKPTF:
|
|||
|
|
FTOI4.xyz VF05,VF05 IOR VI11,VI11,VI10
|
|||
|
|
ADDAx ACC,VF15,VF00x MFIR.w VF05,VI11
|
|||
|
|
MADDAx ACC,VF12,VF01x IADD VI02,VI02,VI04
|
|||
|
|
MADDAy ACC,VF13,VF01y IADDIU VI07,VI06,0
|
|||
|
|
MADDz VF02,VF14,VF01z IBNE VI02,VI05,LoopKPTF
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w SQ.xyzw VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; non-fogged version
|
|||
|
|
|
|||
|
|
CullPTex:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0 ; source ptr = dest ptr
|
|||
|
|
FTOI15.w VF05,VF00 NOP ; set VF05w=0x8000 (for ADC bit)
|
|||
|
|
NOP MR32.z VF07,VF00 ; set 1 in (s,t,1)
|
|||
|
|
|
|||
|
|
LoopKPT:NOP LQ.xy VF07,0(VI03) ; get tex coords
|
|||
|
|
NOP IADD VI03,VI03,VI04 ; step source ptr
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex coords
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF12.xy VF07,VF07 NOP ; tex coords to float
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP ; vertex coords to float
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP ; row 1 view transform
|
|||
|
|
MADDz VF03,VF14,VF02z NOP ; row 2 view transform
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF23w,VF03w ; inv viewport scale ; calc 1/w
|
|||
|
|
MADDw VF06,VF11,VF03w NOP ; inv viewport offset
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF06xyz,VF06w NOP ; generate outcodes
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF08,VF07,Q NOP ; homogeneous divide (st1)/w
|
|||
|
|
MULq.xyz VF05,VF03,Q NOP ; homogeneous divide (xyz)/w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x03FFFF ; test last 3 outcodes
|
|||
|
|
NOP SQ.xyz VF08,0(VI02)
|
|||
|
|
FTOI4.xyz VF05,VF05 IADD VI02,VI02,VI04 ; step dest ptr
|
|||
|
|
NOP IBNE VI01,VI00,CullKPT ; cull if all out
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopKPT ; loop
|
|||
|
|
NOP SQ.xyz VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
CullKPT:NOP IBNE VI02,VI05,LoopKPT ; loop
|
|||
|
|
NOP SQ VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF01,VF01 LQ.xy VF05,0(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF01x LQ.xy VF06,0(VI03)
|
|||
|
|
MADDAy ACC,VF13,VF01y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF03,VF14,VF01z LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF12.xy VF07,VF05 NOP
|
|||
|
|
MULA ACC,VF10,VF03 NOP
|
|||
|
|
MADDw VF02,VF11,VF03w DIV Q,VF23w,VF03w
|
|||
|
|
ITOF4.xyz VF01,VF01 MR32.z VF07,VF00
|
|||
|
|
ADDAx ACC,VF15,VF00x ISUBIU VI01,VI00,1
|
|||
|
|
CLIPw.xyz VF02xyz,VF02w MFIR.w VF04,VI01
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP
|
|||
|
|
|
|||
|
|
LoopKPT:MADDz VF02,VF14,VF01z LQ.xy VF05,0(VI03)
|
|||
|
|
MULq.xyz VF08,VF07,Q IADD VI03,VI03,VI04
|
|||
|
|
MULq.xyz VF04,VF03,Q LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF12.xy VF07,VF06 FCAND VI01,0x03FFFF
|
|||
|
|
MULA ACC,VF10,VF02 DIV Q,VF23w,VF02w
|
|||
|
|
MADDw VF03,VF11,VF02w MOVE.xy VF06,VF05
|
|||
|
|
ITOF4.xyz VF01,VF01 SQ.xyz VF08,0(VI02)
|
|||
|
|
FTOI4.xyz VF04,VF04 IADD VI02,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x IBNE VI01,VI00,CullKPT
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w MOVE.xyz VF03,VF02
|
|||
|
|
MADDAx ACC,VF12,VF01x IBNE VI02,VI05,LoopKPT
|
|||
|
|
MADDAy ACC,VF13,VF01y SQ.xyz VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullKPT:MADDAx ACC,VF12,VF01x IBNE VI02,VI05,LoopKPT
|
|||
|
|
MADDAy ACC,VF13,VF01y SQ VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
WibbleT1:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
LoopW: NOP LQ.xy VF01,0(VI03)
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF12.xy VF02,VF01 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADD.xy VF03,VF02,VF27 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
FTOI12.xy VF04,VF03 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP SQ.xy VF04,0(VI02)
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopW
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP LQ.xy VF04,0(VI02)
|
|||
|
|
ITOF12.xy VF04,VF04 IADD VI03,VI02,VI04
|
|||
|
|
ADD.xy VF04,VF04,VF27 LQ.xy VF03,0(VI03)
|
|||
|
|
ITOF12.xy VF03,VF03 IADD VI03,VI03,VI04
|
|||
|
|
FTOI12.xy VF04,VF04 LQ.xy VF02,0(VI03)
|
|||
|
|
ADD.xy VF03,VF03,VF27 IADD VI03,VI03,VI04
|
|||
|
|
ITOF12.xy VF02,VF02 ISUB VI05,VI05,VI04
|
|||
|
|
|
|||
|
|
LoopW: NOP LQ.xy VF01,0(VI03)
|
|||
|
|
NOP SQ.xy VF04,0(VI02)
|
|||
|
|
FTOI12.xy VF04,VF03 IADD VI03,VI03,VI04
|
|||
|
|
ADD.xy VF03,VF02,VF27 IBNE VI02,VI05,LoopW
|
|||
|
|
ITOF12.xy VF02,VF01 IADD VI02,VI02,VI04
|
|||
|
|
|
|||
|
|
NOP IADD VI05,VI05,VI04
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP B PTex1
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
LWibT1:
|
|||
|
|
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
NOP LQ.xy VF04,0(VI02)
|
|||
|
|
ITOF12.xy VF04,VF04 IADD VI03,VI02,VI04
|
|||
|
|
ADD.xy VF04,VF04,VF27 LQ.xy VF03,0(VI03)
|
|||
|
|
ITOF12.xy VF03,VF03 IADD VI03,VI03,VI04
|
|||
|
|
FTOI12.xy VF04,VF04 LQ.xy VF02,0(VI03)
|
|||
|
|
ADD.xy VF03,VF03,VF27 IADD VI03,VI03,VI04
|
|||
|
|
ITOF12.xy VF02,VF02 ISUB VI05,VI05,VI04
|
|||
|
|
|
|||
|
|
LoopLW: NOP LQ.xy VF01,0(VI03)
|
|||
|
|
NOP SQ.xy VF04,0(VI02)
|
|||
|
|
FTOI12.xy VF04,VF03 IADD VI03,VI03,VI04
|
|||
|
|
ADD.xy VF03,VF02,VF27 IBNE VI02,VI05,LoopLW
|
|||
|
|
ITOF12.xy VF02,VF01 IADD VI02,VI02,VI04
|
|||
|
|
|
|||
|
|
NOP IADD VI05,VI05,VI04
|
|||
|
|
|
|||
|
|
NOP B Light1
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; reflection mapping
|
|||
|
|
|
|||
|
|
Refl1:
|
|||
|
|
|
|||
|
|
NOP IADDIU VI11,VI00,0x0800
|
|||
|
|
NOP IAND VI01,VI01,VI11
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,SingleSided
|
|||
|
|
NOP IADDIU VI01,VI00,LabelR0
|
|||
|
|
|
|||
|
|
LabelR0:
|
|||
|
|
NOP IADDIU VI01,VI00,COLR
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP ISUB VI14,VI14,VI01
|
|||
|
|
NOP IBNE VI01,VI00,ApplyColour
|
|||
|
|
NOP IADDIU VI01,VI00,LabelR1
|
|||
|
|
|
|||
|
|
LabelR1:
|
|||
|
|
NOP IADDIU VI01,VI00,CLIP
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,ReflClip
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
NOP MR32.z VF04,VF00
|
|||
|
|
NOP LOI 0.5
|
|||
|
|
|
|||
|
|
LoopR: NOP LQ.xyz VF05,0(VI03) ; get normal
|
|||
|
|
NOP IADD VI03,VI03,VI04 ; step source pointer
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF15.xyz VF05,VF05 NOP ; VF05 = n (unit, in model space)
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP
|
|||
|
|
|
|||
|
|
; compute 0.5*(nx+vx/vz+1, ny+vy/vz+1)
|
|||
|
|
MULAx.xyz ACC,VF17,VF02x NOP ; transform v
|
|||
|
|
MADDAy.xyz ACC,VF18,VF02y NOP
|
|||
|
|
MADDz.xyz VF02,VF19,VF02z NOP
|
|||
|
|
MULAx.xy ACC,VF17,VF05x NOP ; transform n
|
|||
|
|
MADDAy.xy ACC,VF18,VF05y NOP
|
|||
|
|
MADDz.xy VF03,VF19,VF05z NOP
|
|||
|
|
NOP DIV Q,VF00w,VF02z ; calc 1/vz'
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAi.xy ACC,VF03,I NOP
|
|||
|
|
MSUBq.xy VF04,VF02,Q NOP
|
|||
|
|
|
|||
|
|
NOP SQ.xyz VF04,0(VI02)
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopR
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B Proj1
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
NOP LQ.xyz VF02,2(VI02)
|
|||
|
|
NOP LQ.xyz VF04,0(VI02)
|
|||
|
|
ITOF4.xyz VF02,VF02 MR32.z VF03,VF00
|
|||
|
|
ITOF15.xyz VF05,VF04 LOI 0.5
|
|||
|
|
MULAx.xyz ACC,VF17,VF02x LQ.xyz VF01,5(VI02)
|
|||
|
|
MADDAy.xyz ACC,VF18,VF02y LQ.xyz VF04,3(VI02)
|
|||
|
|
MADDz.xyz VF02,VF19,VF02z NOP
|
|||
|
|
MULAx.xy ACC,VF17,VF05x NOP
|
|||
|
|
ITOF4.xyz VF01,VF01 DIV Q,VF00w,VF02z
|
|||
|
|
MADDAy.xy ACC,VF18,VF05y NOP
|
|||
|
|
MADDz.xy VF27,VF19,VF05z NOP
|
|||
|
|
ITOF15.xyz VF05,VF04 NOP
|
|||
|
|
|
|||
|
|
LoopR: MULAx.xyz ACC,VF17,VF01x MOVE.xy VF03,VF02
|
|||
|
|
MADDAy.xyz ACC,VF18,VF01y NOP
|
|||
|
|
MADDz.xyz VF02,VF19,VF01z LQ.xyz VF01,8(VI02)
|
|||
|
|
ADDAi.xy ACC,VF27,I LQ.xyz VF04,6(VI02)
|
|||
|
|
MSUBq.xy VF03,VF03,Q IADD VI02,VI02,VI04
|
|||
|
|
MULAx.xy ACC,VF17,VF05x NOP
|
|||
|
|
ITOF4.xyz VF01,VF01 DIV Q,VF00w,VF02z
|
|||
|
|
MADDAy.xy ACC,VF18,VF05y NOP
|
|||
|
|
MADDz.xy VF27,VF19,VF05z IBNE VI02,VI05,LoopR
|
|||
|
|
ITOF15.xyz VF05,VF04 SQ.xyz VF03,-3(VI02)
|
|||
|
|
|
|||
|
|
NOP B Proj2
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
ReflClip:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
NOP LOI 0.5
|
|||
|
|
|
|||
|
|
|
|||
|
|
LoopRC: NOP LQ.xyz VF04,0(VI03) ; get normal
|
|||
|
|
NOP IADD VI03,VI03,VI04 ; step source pointer
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF15.xyz VF04,VF04 NOP ; VF01 = n (unit, in model space)
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
|
|||
|
|
; compute ((nx'+0.5)*vz'-vx', (ny'+0.5)*vz'-vy', vz', 1/vz')
|
|||
|
|
MULAx.xyz ACC,VF17,VF01x NOP ; transform v
|
|||
|
|
MADDAy.xyz ACC,VF18,VF01y NOP
|
|||
|
|
MADDz.xyz VF02,VF19,VF01z NOP
|
|||
|
|
ADDAi.xy ACC,VF00,I NOP
|
|||
|
|
MADDAx.xy ACC,VF17,VF04x NOP ; transform n
|
|||
|
|
MADDAy.xy ACC,VF18,VF04y NOP
|
|||
|
|
MADDz.xy VF03,VF19,VF04z NOP
|
|||
|
|
NOP DIV Q,VF00w,VF02z
|
|||
|
|
SUBA.xy ACC,VF00,VF02 MOVE.z VF04,VF02
|
|||
|
|
MADDz.xy VF04,VF03,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.w VF04,VF00,Q NOP
|
|||
|
|
|
|||
|
|
NOP SQ VF04,0(VI02)
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopRC
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,ReflPostClip
|
|||
|
|
|
|||
|
|
NOP B Clip
|
|||
|
|
NOP ISW.w VI01,-1(VI02)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP LQ.xyz VF02,2(VI02)
|
|||
|
|
NOP LQ.xyz VF03,0(VI02)
|
|||
|
|
ITOF4.xyz VF02,VF02 LOI 0.5
|
|||
|
|
ITOF15.xyz VF04,VF03 NOP
|
|||
|
|
MULAx.xyz ACC,VF17,VF02x LQ.xyz VF03,3(VI02)
|
|||
|
|
MADDAy.xyz ACC,VF18,VF02y LQ.xyz VF01,5(VI02)
|
|||
|
|
MADDz.xyz VF02,VF19,VF02z NOP
|
|||
|
|
ADDAi.xy ACC,VF00,I NOP
|
|||
|
|
MADDAx.xy ACC,VF17,VF04x NOP
|
|||
|
|
MADDAy.xy ACC,VF18,VF04y NOP
|
|||
|
|
|
|||
|
|
LoopRC: MADDz.xy VF05,VF19,VF04z DIV Q,VF00w,VF02z
|
|||
|
|
ITOF4.xyz VF01,VF01 IADD VI02,VI02,VI04
|
|||
|
|
ITOF15.xyz VF04,VF03 NOP
|
|||
|
|
SUBA.xy ACC,VF00,VF02 MOVE.z VF05,VF02
|
|||
|
|
MADDz.xy VF05,VF05,VF02z NOP
|
|||
|
|
MULAx.xyz ACC,VF17,VF01x NOP
|
|||
|
|
MADDAy.xyz ACC,VF18,VF01y NOP
|
|||
|
|
MULq.w VF05,VF00,Q LQ.xyz VF03,3(VI02)
|
|||
|
|
MADDz.xyz VF02,VF19,VF01z LQ.xyz VF01,5(VI02)
|
|||
|
|
ADDAi.xy ACC,VF00,I NOP
|
|||
|
|
MADDAx.xy ACC,VF17,VF04x IBNE VI02,VI05,LoopRC
|
|||
|
|
MADDAy.xy ACC,VF18,VF04y SQ VF05,-3(VI02)
|
|||
|
|
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,ReflPostClip
|
|||
|
|
|
|||
|
|
NOP B Clip
|
|||
|
|
NOP ISW.w VI01,-1(VI02)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
ReflPostClip:
|
|||
|
|
|
|||
|
|
.if 1
|
|||
|
|
|
|||
|
|
; fog version
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP LOI 0x45000FFF
|
|||
|
|
MULi.w VF25,VF00,I NOP ; VF25w = 2^11 + 1 - 2^-12
|
|||
|
|
SUBw.w VF25,VF25,VF23w NOP ; VF25w = 2^11 + 1-f0 - 2^-12
|
|||
|
|
|
|||
|
|
NOP IADDIU VI10,VI00,0x4000
|
|||
|
|
NOP IADDIU VI10,VI10,0x4000
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
|
|||
|
|
LoopRPC:NOP LQ VF07,0(VI03)
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULw.xyz VF08,VF07,VF07w NOP ; homogeneous divide (str)/r
|
|||
|
|
ITOF4.xyz VF02,VF01 MTIR VI07,VF01w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF23w,VF03w
|
|||
|
|
MADDw VF04,VF11,VF03w NOP
|
|||
|
|
MINI.w VF03,VF03,VF24 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w NOP
|
|||
|
|
MULAw ACC,VF00,VF25w NOP
|
|||
|
|
MADDq VF05,VF03,Q NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP IBNE VI01,VI00,CullRPC
|
|||
|
|
FTOI4.xyz VF06,VF05 SQ.xyz VF08,0(VI02)
|
|||
|
|
NOP MTIR VI11,VF05w
|
|||
|
|
NOP IOR VI11,VI11,VI07
|
|||
|
|
NOP MFIR.w VF06,VI11
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopRPC
|
|||
|
|
NOP SQ.xyzw VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullRPC:NOP MTIR VI11,VF05w
|
|||
|
|
NOP IOR VI11,VI11,VI10
|
|||
|
|
NOP MFIR.w VF06,VI11
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopRPC
|
|||
|
|
NOP SQ.xyzw VF06,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ VF04,-1(VI03)
|
|||
|
|
ITOF4.xyz VF04,VF04 LQ VF07,0(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF04x MTIR VI07,VF04w
|
|||
|
|
MADDAy ACC,VF13,VF04y LQ VF06,0(VI03)
|
|||
|
|
MADDz VF04,VF14,VF04z IADD VI03,VI03,VI04
|
|||
|
|
ADDx VF07,VF07,VF00x LQ VF01,-1(VI03)
|
|||
|
|
MULA ACC,VF10,VF04 DIV Q,VF23w,VF04w
|
|||
|
|
MADDw VF03,VF11,VF04w NOP
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
MINI.w VF04,VF04,VF24 NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP
|
|||
|
|
MADDz VF02,VF14,VF01z NOP
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w NOP
|
|||
|
|
|
|||
|
|
LoopRPC:MULw.xyz VF08,VF07,VF07w MTIR VI06,VF01w
|
|||
|
|
ADDx VF07,VF06,VF00x LQ VF06,0(VI03)
|
|||
|
|
MULAw ACC,VF00,VF25w IADD VI03,VI03,VI04
|
|||
|
|
MADDq VF05,VF04,Q LQ VF01,-1(VI03)
|
|||
|
|
ADDx.xyz VF04,VF02,VF00x FCAND VI01,0x03FFFF
|
|||
|
|
MULA ACC,VF10,VF02 DIV Q,VF23w,VF02w
|
|||
|
|
MADDw VF03,VF11,VF02w SQ.xyz VF08,0(VI02)
|
|||
|
|
ITOF4.xyz VF01,VF01 IBNE VI01,VI00,CullRPC
|
|||
|
|
MINI.w VF04,VF02,VF24 MTIR VI11,VF05w
|
|||
|
|
FTOI4.xyz VF05,VF05 IOR VI11,VI11,VI07
|
|||
|
|
ADDAx ACC,VF15,VF00x MFIR.w VF05,VI11
|
|||
|
|
MADDAx ACC,VF12,VF01x IADD VI02,VI02,VI04
|
|||
|
|
MADDAy ACC,VF13,VF01y IADDIU VI07,VI06,0
|
|||
|
|
MADDz VF02,VF14,VF01z IBNE VI02,VI05,LoopRPC
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w SQ.xyzw VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullRPC:FTOI4.xyz VF05,VF05 IOR VI11,VI11,VI10
|
|||
|
|
ADDAx ACC,VF15,VF00x MFIR.w VF05,VI11
|
|||
|
|
MADDAx ACC,VF12,VF01x IADD VI02,VI02,VI04
|
|||
|
|
MADDAy ACC,VF13,VF01y IADDIU VI07,VI06,0
|
|||
|
|
MADDz VF02,VF14,VF01z IBNE VI02,VI05,LoopRPC
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w SQ.xyzw VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
; original version
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 1
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
FTOI15.w VF05,VF00 NOP ; set VF05w=0x8000 (for ADC bit)
|
|||
|
|
|
|||
|
|
LoopRPC:NOP LQ VF07,0(VI02) ; get tex coords
|
|||
|
|
NOP LQ.xyz VF01,2(VI02) ; get vertex coords
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULw.xyz VF08,VF07,VF07w NOP ; homogeneous divide (str)/r
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP ; vertex coords to float
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP ; row 1 view transform
|
|||
|
|
MADDz VF03,VF14,VF02z NOP ; row 2 view transform
|
|||
|
|
NOP SQ.xyz VF08,0(VI02)
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step dest ptr
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF00w,VF03w ; inv viewport scale ; calc 1/w
|
|||
|
|
MADDw VF06,VF11,VF03w NOP ; inv viewport offset
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF06xyz,VF06w NOP ; generate outcodes
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF05,VF03,Q NOP ; homogeneous divide (xyz)/w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x03FFFF ; test last 3 outcodes
|
|||
|
|
NOP IBNE VI01,VI00,CullRPC ; cull if one was out
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopRPC ; loop
|
|||
|
|
NOP SQ.xyz VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
CullRPC:NOP IBNE VI02,VI05,LoopRPC ; loop
|
|||
|
|
NOP SQ VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,2(VI02)
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ.xyz VF01,5(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF02x LQ VF07,0(VI02)
|
|||
|
|
MADDAy ACC,VF13,VF02y IADDIU VI01,VI00,0x4000
|
|||
|
|
MADDz VF03,VF14,VF02z IADDIU VI01,VI01,0x4000
|
|||
|
|
MULw.xyz VF08,VF07,VF07w MFIR.w VF05,VI01
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ VF07,3(VI02)
|
|||
|
|
MULA ACC,VF10,VF03 NOP
|
|||
|
|
MADDw VF06,VF11,VF03w DIV Q,VF00w,VF03w
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
|
|||
|
|
LoopRPC:MADDAy ACC,VF13,VF02y MOVE.xyz VF04,VF03
|
|||
|
|
CLIPw.xyz VF06xyz,VF06w LQ.xyz VF01,8(VI02)
|
|||
|
|
MADDz VF03,VF14,VF02z IADD VI02,VI02,VI04
|
|||
|
|
MULw.xyz VF08,VF07,VF07w SQ.xyz VF08,-3(VI02)
|
|||
|
|
MULq.xyz VF05,VF04,Q LQ VF07,3(VI02)
|
|||
|
|
ITOF4.xyz VF02,VF01 FCAND VI01,0x03FFFF
|
|||
|
|
MULA ACC,VF10,VF03 IBNE VI01,VI00,CullRPC
|
|||
|
|
MADDw VF06,VF11,VF03w DIV Q,VF00w,VF03w
|
|||
|
|
ADDAx ACC,VF15,VF00x IBNE VI02,VI05,LoopRPC
|
|||
|
|
MADDAx ACC,VF12,VF02x SQ.xyz VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullRPC:ADDAx ACC,VF15,VF00x IBNE VI02,VI05,LoopRPC
|
|||
|
|
MADDAx ACC,VF12,VF02x SQ VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; lighting (2 diffuse + ambient)
|
|||
|
|
|
|||
|
|
Light1:
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
LoopL: NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ.xyz VF01,-3(VI03)
|
|||
|
|
NOP LQ.xyz VF08,-2(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF15.xyz VF02,VF01 NOP
|
|||
|
|
ITOF0.xyz VF08,VF08 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x NOP
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y NOP
|
|||
|
|
MADDz.xyz VF03,VF22,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MAXx.xyz VF04,VF03,VF00x NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF24,VF04x NOP
|
|||
|
|
MADDAy.xyz ACC,VF25,VF04y NOP
|
|||
|
|
MADDz.xyz VF05,VF26,VF04z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MUL.xyz VF05,VF05,VF08 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP LOI 255
|
|||
|
|
MINIi.xyz VF06,VF05,I NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
FTOI0.xyz VF07,VF06 NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopL
|
|||
|
|
NOP SQ.xyz VF07,-2(VI02)
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
NOP LQ.xyz VF02,-3(VI03)
|
|||
|
|
ITOF15.xyz VF02,VF02 LQ.xyz VF06,-2(VI03)
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x IADD VI03,VI03,VI04
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y LQ.xyz VF01,-3(VI03)
|
|||
|
|
MADDz.xyz VF02,VF22,VF02z LQ.xyz VF05,-2(VI03)
|
|||
|
|
ITOF0.xyz VF06,VF06 NOP
|
|||
|
|
MAXx.xyz VF02,VF02,VF00x NOP
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x NOP
|
|||
|
|
ITOF15.xyz VF01,VF01 NOP
|
|||
|
|
MADDAx.xyz ACC,VF24,VF02x NOP
|
|||
|
|
MADDAy.xyz ACC,VF25,VF02y NOP
|
|||
|
|
MADDz.xyz VF03,VF26,VF02z NOP
|
|||
|
|
MULAx.xyz ACC,VF20,VF01x NOP
|
|||
|
|
MADDAy.xyz ACC,VF21,VF01y NOP
|
|||
|
|
MADDz.xyz VF02,VF22,VF01z IADD VI03,VI03,VI04
|
|||
|
|
MUL.xyz VF03,VF03,VF06 LQ.xyz VF01,-3(VI03)
|
|||
|
|
ITOF0.xyz VF06,VF05 LQ.xyz VF05,-2(VI03)
|
|||
|
|
MAXx.xyz VF02,VF02,VF00x NOP
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x LOI 255
|
|||
|
|
|
|||
|
|
LoopL: ITOF15.xyz VF01,VF01 NOP
|
|||
|
|
MINIi.xyz VF04,VF03,I NOP
|
|||
|
|
MADDAx.xyz ACC,VF24,VF02x NOP
|
|||
|
|
MADDAy.xyz ACC,VF25,VF02y NOP
|
|||
|
|
MADDz.xyz VF03,VF26,VF02z NOP
|
|||
|
|
MULAx.xyz ACC,VF20,VF01x NOP
|
|||
|
|
MADDAy.xyz ACC,VF21,VF01y NOP
|
|||
|
|
MADDz.xyz VF02,VF22,VF01z IADD VI03,VI03,VI04
|
|||
|
|
FTOI0.xyz VF04,VF04 IADD VI02,VI02,VI04
|
|||
|
|
MUL.xyz VF03,VF03,VF06 LQ.xyz VF01,-3(VI03)
|
|||
|
|
ITOF0.xyz VF06,VF05 LQ.xyz VF05,-2(VI03)
|
|||
|
|
MAXx.xyz VF02,VF02,VF00x IBNE VI02,VI05,LoopL
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x SQ.xyz VF04,-2(VI02)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP IADDIU VI11,VI00,0x3000
|
|||
|
|
NOP IAND VI11,VI01,VI11
|
|||
|
|
|
|||
|
|
NOP ISUBIU VI08,VI00,COLR+1
|
|||
|
|
NOP IAND VI14,VI14,VI08
|
|||
|
|
|
|||
|
|
NOP IBNE VI10,VI00,Label2
|
|||
|
|
NOP ISUB VI02,VI05,VI06
|
|||
|
|
NOP B Label0
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; applying material colour
|
|||
|
|
|
|||
|
|
ApplyColour:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
LoopAC: NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ.xyz VF01,-2(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF0.xyz VF02,VF01 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MUL.xyz VF03,VF02,VF16 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP LOI 255
|
|||
|
|
MINIi.xyz VF04,VF03,I NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
FTOI0.xyz VF05,VF04 NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopAC
|
|||
|
|
NOP SQ.xyz VF05,-2(VI02)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
NOP LQ.xyz VF01,-2(VI03)
|
|||
|
|
ITOF0.xyz VF02,VF01 IADD VI03,VI03,VI04
|
|||
|
|
MUL.xyz VF03,VF02,VF16 LQ.xyz VF01,-2(VI03)
|
|||
|
|
ITOF0.xyz VF02,VF01 LOI 255
|
|||
|
|
MINIi.xyz VF04,VF03,I IADD VI03,VI03,VI04
|
|||
|
|
MUL.xyz VF03,VF02,VF16 LQ.xyz VF01,-2(VI03)
|
|||
|
|
ITOF0.xyz VF02,VF01 IADD VI03,VI03,VI04
|
|||
|
|
FTOI0.xyz VF05,VF04 LQ.xyz VF01,-2(VI03)
|
|||
|
|
|
|||
|
|
LoopAC: MINIi.xyz VF04,VF03,I IADD VI03,VI03,VI04
|
|||
|
|
MUL.xyz VF03,VF02,VF16 IADD VI02,VI02,VI04
|
|||
|
|
ITOF0.xyz VF02,VF01 LQ.xyz VF01,-2(VI03)
|
|||
|
|
NOP IBNE VI02,VI05,LoopAC
|
|||
|
|
FTOI0.xyz VF05,VF04 SQ.xyz VF05,-2(VI02)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP JR VI01
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
SingleSided:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
ADDw.x VF08,VF00,VF00w NOP
|
|||
|
|
FTOI15.w VF08,VF00 NOP
|
|||
|
|
|
|||
|
|
Loop_SS:OPMULA.xyz ACC,VF02,VF03 NOP
|
|||
|
|
OPMSUB.xyz VF04,VF03,VF02 NOP
|
|||
|
|
ADDx VF02,VF03,VF00x NOP
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF03,VF01 MTIR VI10,VF01w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MUL.xyz VF05,VF04,VF03 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAy.x ACC,VF05,VF05y NOP
|
|||
|
|
MADDz.x VF00,VF08,VF05z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP FMEQ VI10,VI10
|
|||
|
|
NOP IBEQ VI10,VI00,Cull_SS
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,Loop_SS
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP JR VI01
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
Cull_SS:NOP IBNE VI02,VI05,Loop_SS
|
|||
|
|
NOP SQ.w VF08,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP JR VI01
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
ADDw.x VF08,VF00,VF00w IADD VI03,VI02,VI04
|
|||
|
|
FTOI15.w VF08,VF00 LQ VF02,-1(VI03)
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
ITOF4.xyz VF02,VF02 LQ VF01,-1(VI03)
|
|||
|
|
ITOF4 VF03,VF01 MTIR VI10,VF02w
|
|||
|
|
|
|||
|
|
Loop_SS:FTOI4.w VF03,VF03 IADD VI03,VI03,VI04
|
|||
|
|
MUL.xyz VF05,VF04,VF03 LQ VF01,-1(VI03)
|
|||
|
|
OPMULA.xyz ACC,VF02,VF03 IADD VI02,VI02,VI04
|
|||
|
|
OPMSUB.xyz VF04,VF03,VF02 FMEQ VI10,VI10
|
|||
|
|
ADDx VF02,VF03,VF00x IBEQ VI10,VI00,Cull_SS
|
|||
|
|
ITOF4 VF03,VF01 MTIR VI10,VF03w
|
|||
|
|
ADDAy.x ACC,VF05,VF05y IBNE VI02,VI05,Loop_SS
|
|||
|
|
MADDz.x VF00,VF08,VF05z NOP
|
|||
|
|
|
|||
|
|
NOP JR VI01
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
Cull_SS:ADDAy.x ACC,VF05,VF05y IBNE VI02,VI05,Loop_SS
|
|||
|
|
MADDz.x VF00,VF08,VF05z SQ.w VF08,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP JR VI01
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; lines
|
|||
|
|
|
|||
|
|
Line1: NOP IBEQ VI03,VI00,Proj1+16
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; line culling
|
|||
|
|
|
|||
|
|
CullLine:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0 ; source ptr = dest ptr
|
|||
|
|
FTOI15.w VF05,VF00 NOP ; set VF05w=0x8000 (for ADC bit)
|
|||
|
|
|
|||
|
|
LoopKL: NOP IADD VI03,VI03,VI04 ; step source ptr
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03) ; get vertex coords
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP ; vertex coords to float
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP ; row 1 view transform
|
|||
|
|
MADDz VF03,VF14,VF02z NOP ; row 2 view transform
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF00w,VF03w ; inv viewport scale ; calc 1/w
|
|||
|
|
MADDw VF06,VF11,VF03w NOP ; inv viewport offset
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF06xyz,VF06w NOP ; generate outcodes
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF05,VF03,Q NOP ; homogeneous divide
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step dest ptr
|
|||
|
|
NOP FCAND VI01,0x000FFF ; test last 3 outcodes
|
|||
|
|
NOP IBNE VI01,VI00,CullKL ; cull if all out
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopKL ; loop
|
|||
|
|
NOP SQ.xyz VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
CullKL: NOP IBNE VI02,VI05,LoopKL ; loop
|
|||
|
|
NOP SQ VF05,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
FTOI15.w VF05,VF00 IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF02,VF01 IADD VI03,VI03,VI04
|
|||
|
|
MADDAx ACC,VF12,VF02x LQ.xyz VF01,-1(VI03)
|
|||
|
|
MADDAy ACC,VF13,VF02y IADD VI03,VI03,VI04
|
|||
|
|
MADDz VF04,VF14,VF02z NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ.xyz VF01,-1(VI03)
|
|||
|
|
MULA ACC,VF10,VF04 DIV Q,VF00w,VF04w
|
|||
|
|
MADDw VF06,VF11,VF04w NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF02x NOP
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z NOP
|
|||
|
|
|
|||
|
|
LoopKL: CLIPw.xyz VF06xyz,VF06w IADD VI03,VI03,VI04
|
|||
|
|
MULq.xyz VF05,VF04,Q IADD VI02,VI02,VI04
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ.xyz VF01,-1(VI03)
|
|||
|
|
MULA ACC,VF10,VF03 DIV Q,VF00w,VF03w
|
|||
|
|
MADDw VF06,VF11,VF03w FCAND VI01,0x000FFF
|
|||
|
|
ADDAx ACC,VF15,VF00x IBNE VI01,VI00,CullKL
|
|||
|
|
MADDAx ACC,VF12,VF02x MOVE.xyz VF04,VF03
|
|||
|
|
MADDAy ACC,VF13,VF02y IBNE VI02,VI05,LoopKL
|
|||
|
|
MADDz VF03,VF14,VF02z SQ.xyz VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
CullKL: MADDAy ACC,VF13,VF02y IBNE VI02,VI05,LoopKL
|
|||
|
|
MADDz VF03,VF14,VF02z SQ VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
Shadow:
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
NOP LOI 0.5
|
|||
|
|
MULi.w VF04,VF00,I NOP
|
|||
|
|
NOP MOVE.z VF04,VF00
|
|||
|
|
FTOI15.w VF01,VF00 NOP
|
|||
|
|
NOP IADDIU VI09,VI00,0x1F
|
|||
|
|
|
|||
|
|
LoopSH: NOP IADD VI03,VI03,VI04
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IAND VI08,VI07,VI09
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx.xy ACC,VF27,VF00x NOP
|
|||
|
|
MADDx.x VF03,VF16,VF02x NOP
|
|||
|
|
MADDz.y VF03,VF16,VF02z NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDy.z VF04,VF27,VF02y NOP
|
|||
|
|
SUBw.xy VF04,VF03,VF04w NOP
|
|||
|
|
FTOI12.xy VF03,VF03 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP SQ.xy VF03,0(VI02)
|
|||
|
|
NOP FCGET VI07
|
|||
|
|
NOP IAND VI01,VI01,VI07
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP IBNE VI01,VI00,CullSH
|
|||
|
|
NOP IAND VI01,VI07,VI08
|
|||
|
|
NOP IBNE VI02,VI05,LoopSH
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B EndSH
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
CullSH: NOP IBNE VI02,VI05,LoopSH
|
|||
|
|
NOP SQ.w VF01,-1(VI02)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
FTOI15.w VF01,VF00 IADD VI03,VI02,VI04
|
|||
|
|
ADDAx.xy ACC,VF27,VF00x LQ.xyz VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF02,VF01 IADD VI03,VI03,VI04
|
|||
|
|
MADDx.x VF03,VF16,VF02x LQ.xyz VF01,-1(VI03)
|
|||
|
|
MADDz.y VF03,VF16,VF02z LOI 0.5
|
|||
|
|
MULi.w VF04,VF00,I IADDIU VI09,VI00,0x1F
|
|||
|
|
ADDy.z VF04,VF27,VF02y NOP
|
|||
|
|
SUBw.xy VF04,VF03,VF04w NOP
|
|||
|
|
FTOI12.xy VF03,VF03 NOP
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w MOVE.z VF04,VF00
|
|||
|
|
|
|||
|
|
LoopSH: ADDAx.xy ACC,VF27,VF00x SQ.xy VF03,0(VI02)
|
|||
|
|
MADDx.x VF03,VF16,VF02x IAND VI08,VI07,VI09
|
|||
|
|
MADDz.y VF03,VF16,VF02z IADD VI03,VI03,VI04
|
|||
|
|
NOP FCGET VI07
|
|||
|
|
NOP LQ.xyz VF01,-1(VI03)
|
|||
|
|
ADDy.z VF04,VF27,VF02y IAND VI01,VI01,VI07
|
|||
|
|
SUBw.xy VF04,VF03,VF04w IADD VI02,VI02,VI04
|
|||
|
|
FTOI12.xy VF03,VF03 IBEQ VI01,VI00,KeepSH
|
|||
|
|
ITOF4.xyz VF02,VF01 IAND VI01,VI07,VI08
|
|||
|
|
NOP IBNE VI02,VI05,LoopSH
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w SQ.w VF01,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B EndSH
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
KeepSH: CLIPw.xyz VF00xyz,VF00w IBNE VI02,VI05,LoopSH
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w NOP
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
EndSH: NOP ISUBIU VI14,VI14,SHDW
|
|||
|
|
NOP B PTex1
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
ReformatXforms:
|
|||
|
|
|
|||
|
|
NOP LQ.xyz VF01,3(VI00)
|
|||
|
|
MULx.w VF02,VF00,VF01x XITOP VI06
|
|||
|
|
MULy.w VF03,VF00,VF01y IADDIU VI01,VI00,0
|
|||
|
|
|
|||
|
|
LoopRT: MULz.w VF04,VF00,VF01z LQ.xyz VF01,7(VI01)
|
|||
|
|
NOP IADDIU VI01,VI01,4
|
|||
|
|
NOP SQ.w VF02,-4(VI01)
|
|||
|
|
NOP SQ.w VF03,-3(VI01)
|
|||
|
|
MULx.w VF02,VF00,VF01x IBNE VI01,VI06,LoopRT
|
|||
|
|
MULy.w VF03,VF00,VF01y SQ.w VF04,-2(VI01)
|
|||
|
|
|
|||
|
|
NOP[E] NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
; vertex format
|
|||
|
|
; -------------
|
|||
|
|
; (s,t,1,?)
|
|||
|
|
; (w0,w1,w2,?)
|
|||
|
|
; (nx:to0, ny:to1, nz:to2, ?)
|
|||
|
|
; (r,g,b,a)
|
|||
|
|
; (x,y,z,adc)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
Skin1:
|
|||
|
|
;---------------------------------------------------------------
|
|||
|
|
; wireframe
|
|||
|
|
|
|||
|
|
; 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 58 47
|
|||
|
|
; s x x x x x x x x m m m m m m m m
|
|||
|
|
; <-------------PRIM------------->
|
|||
|
|
; 1 0 0 0 0 0 0 1 0
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,WIRE
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBEQ VI01,VI00,SkipWireframe
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP ISUBIU VI14,VI14,WIRE
|
|||
|
|
|
|||
|
|
NOP LQ.y VF01,-1(VI02)
|
|||
|
|
NOP RINIT R,VF01y
|
|||
|
|
NOP RGET.y VF02,R
|
|||
|
|
NOP DIV Q,VF00w,VF02y
|
|||
|
|
MULq.y VF03,VF01,Q WAITQ
|
|||
|
|
ADDAx.y ACC,VF01,VF00x LOI 0.0078125
|
|||
|
|
MSUBAi.y ACC,VF03,I LOI 0.0625
|
|||
|
|
MSUBi.y VF04,VF03,I NOP
|
|||
|
|
NOP SQ.y VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
SkipWireframe:
|
|||
|
|
;---------------------------------------------------------------
|
|||
|
|
|
|||
|
|
NOP IBNE VI14,VI00,CullSkin
|
|||
|
|
NOP IADDIU VI01,VI00,SHDW
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
LoopS: NOP LQ.xyz VF02,2(VI02) ; get normal & offsets
|
|||
|
|
NOP LQ.xyz VF03,1(VI02) ; get weights
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP MTIR VI08,VF02x ; offset of M0
|
|||
|
|
NOP MTIR VI09,VF02y ; offset of M1
|
|||
|
|
ITOF15.xyz VF02,VF02 MTIR VI10,VF02z ; normal to float ; offset of M2
|
|||
|
|
ITOF15.xyz VF03,VF03 LQ VF05,0(VI08) ; weights to float ; get M0 row 0
|
|||
|
|
NOP LQ VF06,1(VI08) ; get M0 row 1
|
|||
|
|
NOP LQ VF07,2(VI08) ; get M0 row 2
|
|||
|
|
NOP NOP
|
|||
|
|
MULAx.xyz ACC,VF05,VF02x LQ VF08,0(VI09) ; nx*(M0 row 0) ; get M1 row 0
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y LQ VF30,0(VI10) ; ny*(M0 row 1) ; get M2 row 0
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z NOP ; nz*(M0 row 2)
|
|||
|
|
MULAx ACC,VF05,VF03x NOP ; row 0 w0*M0
|
|||
|
|
MADDAy ACC,VF08,VF03y NOP ; add row 0 w1*M1
|
|||
|
|
MADDz VF05,VF30,VF03z NOP ; add row 0 w2*M2
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x LQ VF08,1(VI09) ; lighting dot prods x part ; get M1 row 1
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y LQ VF30,1(VI10) ; lighting dot prods y part ; get M2 row 1
|
|||
|
|
MADDz.xyz VF02,VF22,VF02z NOP ; lighting dot prods z part
|
|||
|
|
MULAx ACC,VF06,VF03x MR32.z VF31,VF05 ; row 1 w0*M0
|
|||
|
|
MADDAy ACC,VF08,VF03y LQ.xyz VF01,4(VI02) ; add row 1 w1*M1 ; get xyz
|
|||
|
|
MADDz VF06,VF30,VF03z LQ.xyz VF29,3(VI02) ; add row 1 w2*M2 ; get rgb
|
|||
|
|
MAXx.xyz VF02,VF02,VF00x LQ VF08,2(VI09) ; clamp dot prods at 0 ; get M1 row 2
|
|||
|
|
NOP LQ VF30,2(VI10) ; get M2 row 2
|
|||
|
|
NOP MR32.y VF31,VF31
|
|||
|
|
MULAx ACC,VF07,VF03x MR32.z VF31,VF06 ; row 2 w0*M0
|
|||
|
|
MADDAy ACC,VF08,VF03y NOP ; add row 2 w1*M1
|
|||
|
|
MADDz VF07,VF30,VF03z NOP ; add row 2 w2*M2
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
ITOF0.xyz VF29,VF29 NOP
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x NOP ; ambient colour
|
|||
|
|
MADDAx.xyz ACC,VF24,VF02x MR32.xy VF31,VF31 ; add diffuse 0
|
|||
|
|
MADDAy.xyz ACC,VF25,VF02y MR32.z VF31,VF07 ; add diffuse 1
|
|||
|
|
MADDz.xyz VF02,VF26,VF02z NOP ; add diffuse 2
|
|||
|
|
MULAx.xyz ACC,VF05,VF01x NOP ; add x*(M row 0)
|
|||
|
|
MADDAy.xyz ACC,VF06,VF01y NOP ; add y*(M row 1)
|
|||
|
|
MADDAz.xyz ACC,VF07,VF01z NOP ; add z*(M row 2)
|
|||
|
|
MADDw.xyz VF01,VF31,VF00w NOP ; M row 3
|
|||
|
|
ADDAw.xyz ACC,VF00,VF00w NOP
|
|||
|
|
MADD.xyz VF02,VF02,VF29 NOP
|
|||
|
|
ADDAx ACC,VF19,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF16,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF17,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDz VF01,VF18,VF01z LOI 1.00003039837 ; row 2 view transform
|
|||
|
|
MINIi.xyz VF02,VF02,I NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP DIV Q,VF00w,VF01w
|
|||
|
|
NOP SQ.xyz VF02,3(VI02)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF01,VF01,Q NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopS
|
|||
|
|
NOP SQ.xyz VF01,-1(VI02)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP LQ.xyz VF01,2(VI02)
|
|||
|
|
NOP LQ.xyz VF03,1(VI02)
|
|||
|
|
NOP MTIR VI08,VF01x
|
|||
|
|
ITOF15.xyz VF02,VF01 LQ VF05,0(VI08)
|
|||
|
|
ITOF15.xyz VF03,VF03 LQ VF06,1(VI08)
|
|||
|
|
MULAx.xyz ACC,VF05,VF02x LQ VF07,2(VI08)
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y MTIR VI09,VF01y
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z LQ VF08,0(VI09)
|
|||
|
|
MULAx ACC,VF05,VF03x MTIR VI10,VF01z
|
|||
|
|
MADDAy ACC,VF08,VF03y LQ VF30,0(VI10)
|
|||
|
|
MADDz VF05,VF30,VF03z LQ VF08,1(VI09)
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x LQ VF30,1(VI10)
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y NOP
|
|||
|
|
MADDz.xyz VF02,VF22,VF02z MR32.z VF31,VF05
|
|||
|
|
MULAx ACC,VF06,VF03x LQ VF04,2(VI09)
|
|||
|
|
MADDAy ACC,VF08,VF03y LQ VF29,2(VI10)
|
|||
|
|
MADDz VF06,VF30,VF03z LOI 0x3F8000FF ; I = 1+255/(2^23)
|
|||
|
|
|
|||
|
|
|
|||
|
|
LoopS: MAXx.xyz VF02,VF02,VF00x LQ.xyz VF01,4(VI02) ; clamp dot prods at 0 ; get vertex
|
|||
|
|
MULAx ACC,VF07,VF03x NOP ; row 2 M0*w0
|
|||
|
|
MADDAy ACC,VF04,VF03y MR32.y VF31,VF31 ; +row 2 M1*w1 ; VF31 = (?,(M)30,?)
|
|||
|
|
MADDz VF07,VF29,VF03z MR32.z VF31,VF06 ; +row 2 M2*w2 ; VF31 = (?,(M)30,(M)31)
|
|||
|
|
ITOF4.xyz VF01,VF01 LQ.xyz VF29,3(VI02) ; vertex to float ; get rgb
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x NOP ; ambient
|
|||
|
|
MADDAx.xyz ACC,VF24,VF02x NOP ; +diffuse 0
|
|||
|
|
MADDAy.xyz ACC,VF25,VF02y MR32.xy VF31,VF31 ; +diffuse 1 ; VF31 = ((M)30,(M)31,?)
|
|||
|
|
MADDz.xyz VF04,VF26,VF02z NOP ; +diffuse 2
|
|||
|
|
ITOF0.xyz VF29,VF29 MR32.z VF31,VF07 ; rgb to float ; VF31 = M row 3
|
|||
|
|
MULAx.xyz ACC,VF05,VF01x LQ.xyz VF02,7(VI02) ; x * (M row 0) ; get normal and offsets
|
|||
|
|
MADDAy.xyz ACC,VF06,VF01y LQ.xyz VF03,6(VI02) ; +y * (M row 1) ; get weights
|
|||
|
|
MADDAz.xyz ACC,VF07,VF01z NOP ; +z * (M row 2)
|
|||
|
|
MADDw.xyz VF01,VF31,VF00w NOP ; +1 * (M row 3)
|
|||
|
|
ADDAw.xyz ACC,VF00,VF00w MTIR VI08,VF02x ; (1,1,1) ; offset of M0
|
|||
|
|
MADD.xyz VF04,VF04,VF29 LQ VF05,0(VI08) ; +illum * rgb ; get M0 row 0
|
|||
|
|
ADDAx ACC,VF19,VF00x LQ VF06,1(VI08) ; row 3 view transform ; get M0 row 1
|
|||
|
|
MADDAx ACC,VF16,VF01x MTIR VI09,VF02y ; row 0 view transform ; offset of M1
|
|||
|
|
ITOF15.xyz VF02,VF02 MTIR VI10,VF02z ; normal to float ; offset of M2
|
|||
|
|
MADDAy ACC,VF17,VF01y LQ VF07,2(VI08) ; row 1 view transform ; get M0 row 2
|
|||
|
|
MADDz VF01,VF18,VF01z LQ VF08,0(VI09) ; row 2 view transform ; get M1 row 0
|
|||
|
|
MINIi.xyz VF04,VF04,I NOP ; clamp rgb at 255
|
|||
|
|
ITOF15.xyz VF03,VF03 NOP ; weights to float
|
|||
|
|
MULAx.xyz ACC,VF05,VF02x LQ VF30,0(VI10) ; nx * (M0 row 0) ; get M2 row 0
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y DIV Q,VF00w,VF01w ; +ny * (M0 row 1) ; calc 1/w
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z SQ.xyz VF04,3(VI02) ; +nz * (M0 row 2) ; store colour
|
|||
|
|
MULAx ACC,VF05,VF03x NOP ; row 0 M0*w0
|
|||
|
|
MADDAy ACC,VF08,VF03y LQ VF08,1(VI09) ; +row 0 M1*w1 ; get M1 row 1
|
|||
|
|
MADDz VF05,VF30,VF03z LQ VF30,1(VI10) ; +row 0 M2*w2 ; get M2 row 1
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x NOP ; lighting dot prods x part
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y IADD VI02,VI02,VI04 ; lighting dot prods y part ; step pointer
|
|||
|
|
MULq.xyz VF01,VF01,Q LQ VF04,2(VI09) ; homogeneous div (xyz)/w ; get M1 row 2
|
|||
|
|
MADDz.xyz VF02,VF22,VF02z LQ VF29,2(VI10) ; lighting dot prods z part ; get M2 row 2
|
|||
|
|
MULAx ACC,VF06,VF03x MR32.z VF31,VF05 ; row 1 M0*w0 ; VF31 = (?,?,(M)30)
|
|||
|
|
MADDAy ACC,VF08,VF03y IBNE VI02,VI05,LoopS ; +row 1 M1*w1 ; loop
|
|||
|
|
MADDz VF06,VF30,VF03z SQ.xyz VF01,-1(VI02) ; +row 1 M2*w2 ; store screen coords
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
CullSkin:
|
|||
|
|
NOP NOP ; need this cycle here
|
|||
|
|
NOP IBEQ VI14,VI01,ShadowSkin
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; new version
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
FTOI15.w VF03,VF00 NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
LoopKS: NOP LQ.xyz VF02,2(VI02) ; get normal & offsets
|
|||
|
|
NOP LQ.xyz VF03,1(VI02) ; get weights
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP MTIR VI08,VF02x ; offset of M0
|
|||
|
|
NOP MTIR VI09,VF02y ; offset of M1
|
|||
|
|
ITOF15.xyz VF02,VF02 MTIR VI10,VF02z ; normal to float ; offset of M2
|
|||
|
|
ITOF15.xyz VF03,VF03 LQ VF05,0(VI08) ; weights to float ; get M0 row 0
|
|||
|
|
NOP LQ VF06,1(VI08) ; get M0 row 1
|
|||
|
|
NOP LQ VF07,2(VI08) ; get M0 row 2
|
|||
|
|
NOP NOP
|
|||
|
|
MULAx.xyz ACC,VF05,VF02x LQ VF08,0(VI09) ; nx*(M0 row 0) ; get M1 row 0
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y LQ VF30,0(VI10) ; ny*(M0 row 1) ; get M2 row 0
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z NOP ; nz*(M0 row 2)
|
|||
|
|
MULAx ACC,VF05,VF03x NOP ; row 0 w0*M0
|
|||
|
|
MADDAy ACC,VF08,VF03y NOP ; add row 0 w1*M1
|
|||
|
|
MADDz VF05,VF30,VF03z NOP ; add row 0 w2*M2
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x LQ VF08,1(VI09) ; lighting dot prods x part ; get M1 row 1
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y LQ VF30,1(VI10) ; lighting dot prods y part ; get M2 row 1
|
|||
|
|
MADDz.xyz VF02,VF22,VF02z NOP ; lighting dot prods z part
|
|||
|
|
MULAx ACC,VF06,VF03x MR32.z VF31,VF05 ; row 1 w0*M0
|
|||
|
|
MADDAy ACC,VF08,VF03y LQ.xyz VF01,4(VI02) ; add row 1 w1*M1
|
|||
|
|
MADDz VF06,VF30,VF03z LQ.xyz VF29,3(VI02) ; add row 1 w2*M2
|
|||
|
|
MAXx.xyz VF02,VF02,VF00x LQ VF08,2(VI09) ; clamp dot prods at 0 ; get M1 row 2
|
|||
|
|
NOP LQ VF30,2(VI10) ; get M2 row 2
|
|||
|
|
NOP NOP
|
|||
|
|
MULAx ACC,VF07,VF03x NOP
|
|||
|
|
MADDAy ACC,VF08,VF03y MR32.y VF31,VF31
|
|||
|
|
MADDz VF07,VF30,VF03z MR32.z VF31,VF06
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP
|
|||
|
|
ITOF0.xyz VF29,VF29 NOP
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x NOP ; ambient colour
|
|||
|
|
MADDAx.xyz ACC,VF24,VF02x MR32.xy VF31,VF31 ; add diffuse 0
|
|||
|
|
MADDAy.xyz ACC,VF25,VF02y MR32.z VF31,VF07 ; add diffuse 1
|
|||
|
|
MADDz.xyz VF02,VF26,VF02z NOP ; add diffuse 2
|
|||
|
|
MULAx.xyz ACC,VF05,VF01x NOP ; add x*(M row 0)
|
|||
|
|
MADDAy.xyz ACC,VF06,VF01y NOP ; add y*(M row 1)
|
|||
|
|
MADDAz.xyz ACC,VF07,VF01z NOP ; add z*(M row 2)
|
|||
|
|
MADDw.xyz VF01,VF31,VF00w NOP ; M row 3
|
|||
|
|
ADDAw.xyz ACC,VF00,VF00w NOP
|
|||
|
|
MADD.xyz VF02,VF02,VF29 NOP
|
|||
|
|
ADDAx ACC,VF19,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF16,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF17,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDz VF01,VF18,VF01z LOI 1.00003039837 ; row 2 view transform
|
|||
|
|
MINIi.xyz VF02,VF02,I NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULA ACC,VF10,VF01 DIV Q,VF00w,VF01w
|
|||
|
|
MADDw VF05,VF11,VF01w SQ.xyz VF02,3(VI02)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF05xyz,VF05w NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULq.xyz VF03,VF01,Q NOP
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP IBNE VI01,VI00,CullKS
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopKS
|
|||
|
|
NOP SQ.xyz VF03,-1(VI02)
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullKS: NOP IBNE VI02,VI05,LoopKS
|
|||
|
|
NOP SQ VF03,-1(VI02)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
FTOI15.w VF04,VF00 LQ.xyz VF01,2(VI02) ; set ADC bit
|
|||
|
|
NOP LQ.xyz VF03,1(VI02)
|
|||
|
|
NOP MTIR VI08,VF01x
|
|||
|
|
NOP LQ VF05,0(VI08)
|
|||
|
|
ITOF15.xyz VF02,VF01 LQ VF06,1(VI08)
|
|||
|
|
ITOF15.xyz VF03,VF03 LQ VF07,2(VI08)
|
|||
|
|
MULAx.xyz ACC,VF05,VF02x MTIR VI09,VF01y
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y MTIR VI10,VF01z
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z LQ VF08,0(VI09)
|
|||
|
|
MULAx ACC,VF05,VF03x LQ VF30,0(VI10)
|
|||
|
|
MADDAy ACC,VF08,VF03y NOP
|
|||
|
|
MADDz VF05,VF30,VF03z LQ VF31,1(VI09)
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x LQ VF29,1(VI10)
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y LOI 0x3F8000FF ; I = 1+255/(2^23)
|
|||
|
|
MADDz.xyz VF02,VF22,VF02z LQ VF08,2(VI09)
|
|||
|
|
MULAx ACC,VF06,VF03x LQ VF30,2(VI10)
|
|||
|
|
|
|||
|
|
|
|||
|
|
LoopKS: MADDAy ACC,VF31,VF03y MR32.z VF31,VF05 ; +row 1 M1*w1 ; VF31 = (?,?,(M)30)
|
|||
|
|
MADDz VF06,VF29,VF03z NOP ; +row 1 M2*w2
|
|||
|
|
MAXx.xyz VF02,VF02,VF00x LQ.xyz VF01,4(VI02) ; clamp dot prods at 0 ; get vertex
|
|||
|
|
MULAx ACC,VF07,VF03x LQ.xyz VF29,3(VI02) ; row 2 M0*w0 ; get rgb
|
|||
|
|
MADDAy ACC,VF08,VF03y MR32.y VF31,VF31 ; +row 2 M1*w1 ; VF31 = (?,(M)30,?)
|
|||
|
|
MADDz VF07,VF30,VF03z MR32.z VF31,VF06 ; +row 2 M2*w2 ; VF31 = (?,(M)30,(M)31)
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP ; vertex to float
|
|||
|
|
ITOF0.xyz VF29,VF29 NOP ; rgb to float
|
|||
|
|
ADDAx.xyz ACC,VF23,VF00x NOP ; ambient
|
|||
|
|
MADDAx.xyz ACC,VF24,VF02x MR32.xy VF31,VF31 ; +diffuse 0 ; VF31 = ((M)30,(M)31,?)
|
|||
|
|
MADDAy.xyz ACC,VF25,VF02y MR32.z VF31,VF07 ; +diffuse 1 ; VF31 = M row 3
|
|||
|
|
MADDz.xyz VF04,VF26,VF02z NOP ; +diffuse 2
|
|||
|
|
MULAx.xyz ACC,VF05,VF01x LQ.xyz VF02,7(VI02) ; x * (M row 0) ; get normal and offsets
|
|||
|
|
MADDAy.xyz ACC,VF06,VF01y NOP ; +y * (M row 1)
|
|||
|
|
MADDAz.xyz ACC,VF07,VF01z NOP ; +z * (M row 2)
|
|||
|
|
MADDw.xyz VF01,VF31,VF00w LQ.xyz VF03,6(VI02) ; +1 * (M row 3) ; get weights
|
|||
|
|
ADDAw.xyz ACC,VF00,VF00w NOP ; (1,1,1)
|
|||
|
|
MADD.xyz VF04,VF04,VF29 MTIR VI08,VF02x ; +illum * rgb ; offset of M0
|
|||
|
|
ADDAx ACC,VF19,VF00x LQ VF05,0(VI08) ; row 3 view transform ; get M0 row 0
|
|||
|
|
MADDAx ACC,VF16,VF01x LQ VF06,1(VI08) ; row 0 view transform ; get M0 row 1
|
|||
|
|
MADDAy ACC,VF17,VF01y MTIR VI09,VF02y ; row 1 view transform ; offset of M1
|
|||
|
|
MADDz VF01,VF18,VF01z MTIR VI10,VF02z ; row 2 view transform ; offset of M2
|
|||
|
|
MINIi.xyz VF04,VF04,I LQ VF07,2(VI08) ; clamp rgb at 255 ; get M0 row 2
|
|||
|
|
ITOF15.xyz VF02,VF02 LQ VF08,0(VI09) ; normal to float ; get M1 row 0
|
|||
|
|
ITOF15.xyz VF03,VF03 NOP ; weights to float
|
|||
|
|
MULA ACC,VF10,VF01 DIV Q,VF00w,VF01w ; inverse viewport scale ; calc 1/w
|
|||
|
|
MADDw VF31,VF11,VF01w SQ.xyz VF04,3(VI02) ; inverse viewport offset ; store colour
|
|||
|
|
MULAx.xyz ACC,VF05,VF02x LQ VF30,0(VI10) ; nx * (M0 row 0) ; get M2 row 0
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y NOP ; +ny * (M0 row 1)
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z NOP ; +nz * (M0 row 2)
|
|||
|
|
CLIPw.xyz VF31xyz,VF31w LQ VF31,1(VI09) ; generate clip codes ; get M1 row 1
|
|||
|
|
MULAx ACC,VF05,VF03x LQ VF29,1(VI10) ; row 0 M0*w0 ; get M2 row 1
|
|||
|
|
MADDAy ACC,VF08,VF03y IADD VI02,VI02,VI04 ; +row 0 M1*w1 ; step pointer
|
|||
|
|
MADDz VF05,VF30,VF03z LQ VF08,2(VI09) ; +row 0 M2*w2 ; get M1 row 2
|
|||
|
|
MULq.xyz VF04,VF01,Q FCAND VI01,0x03FFFF ; homogeneous div (xyz)/w ; last 3 clip codes
|
|||
|
|
MULAx.xyz ACC,VF20,VF02x IBNE VI01,VI00,CullKS ; lighting dot prods x part ; cull if any non-zero
|
|||
|
|
MADDAy.xyz ACC,VF21,VF02y LQ VF30,2(VI10) ; lighting dot prods y part ; get M2 row 2
|
|||
|
|
MADDz.xyz VF02,VF22,VF02z IBNE VI02,VI05,LoopKS ; lighting dot prods z part ; loop
|
|||
|
|
MULAx ACC,VF06,VF03x SQ.xyz VF04,-1(VI02) ; row 1 M0*w0 ; store screen coords
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
CullKS: MADDz.xyz VF02,VF22,VF02z IBNE VI02,VI05,LoopKS ; lighting dot prods z part ; loop
|
|||
|
|
MULAx ACC,VF06,VF03x SQ VF04,-1(VI02) ; row 1 M0*w0 ; store screen coords
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; shadow version
|
|||
|
|
|
|||
|
|
ShadowSkin:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised
|
|||
|
|
|
|||
|
|
LoopSS:
|
|||
|
|
NOP ILW.x VI08,2(VI02) ; get primary transform offset
|
|||
|
|
NOP LQ.xyz VF01,4(VI02) ; get vertex coords
|
|||
|
|
ITOF4.xyz VF01,VF01 NOP ; vertex coords to float
|
|||
|
|
NOP LQ VF04,0(VI08) ; get M0 row 0
|
|||
|
|
NOP LQ VF05,1(VI08) ; get M0 row 1
|
|||
|
|
NOP LQ VF06,2(VI08) ; get M0 row 2
|
|||
|
|
ADDAw.x ACC,VF00,VF04w NOP ; ACCx = (M0)30
|
|||
|
|
ADDAw.y ACC,VF00,VF05w NOP ; ACCy = (M0)31
|
|||
|
|
ADDAw.z ACC,VF00,VF06w NOP ; ACCz = (M0)32
|
|||
|
|
MADDAx.xyz ACC,VF04,VF01x NOP ; +x * M0 row 0
|
|||
|
|
MADDAy.xyz ACC,VF05,VF01y NOP ; +y * M0 row 1
|
|||
|
|
MADDz.xyz VF01,VF06,VF01z NOP ; +z * M0 row 2
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step pointer
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDz VF01,VF14,VF01z NOP ; row 2 view transform
|
|||
|
|
NOP DIV Q,VF00w,VF01w ; calc 1/w
|
|||
|
|
MULq.xyz VF01,VF01,Q WAITQ ; homogeneous div (xyz)/w
|
|||
|
|
NOP IBNE VI02,VI05,LoopSS ; loop
|
|||
|
|
NOP SQ.xyz VF01,-1(VI02) ; store screen coords
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised
|
|||
|
|
|
|||
|
|
NOP ILW.x VI08,2(VI02)
|
|||
|
|
NOP LQ VF01,4(VI02)
|
|||
|
|
ITOF4.xyz VF02,VF01 LQ VF08,3(VI08)
|
|||
|
|
ADDAx.xyz ACC,VF08,VF00 LQ VF05,0(VI08)
|
|||
|
|
MADDAx.xyz ACC,VF05,VF02x LQ VF06,1(VI08)
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y LQ VF07,2(VI08)
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z ILW.x VI08,7(VI02)
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ VF01,9(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF02x LQ VF05,0(VI08)
|
|||
|
|
MADDAy ACC,VF13,VF02y LQ VF06,1(VI08)
|
|||
|
|
MADDz VF03,VF14,VF02z LQ VF07,2(VI08)
|
|||
|
|
|
|||
|
|
LoopSS: ITOF4.xyz VF02,VF01 ILW.x VI08,12(VI02)
|
|||
|
|
ADDAw.x ACC,VF00,VF05w IADD VI02,VI02,VI04
|
|||
|
|
ADDAw.y ACC,VF00,VF06w DIV Q,VF00w,VF03w
|
|||
|
|
ADDAw.z ACC,VF00,VF07w NOP
|
|||
|
|
MADDAx.xyz ACC,VF05,VF02x NOP
|
|||
|
|
MADDAy.xyz ACC,VF06,VF02y LQ VF01,9(VI02)
|
|||
|
|
MADDz.xyz VF02,VF07,VF02z LQ VF05,0(VI08)
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MULq.xyz VF04,VF03,Q LQ VF06,1(VI08)
|
|||
|
|
MADDAx ACC,VF12,VF02x LQ VF07,2(VI08)
|
|||
|
|
MADDAy ACC,VF13,VF02y NOP
|
|||
|
|
MADDz VF03,VF14,VF02z IBNE VI02,VI05,LoopSS
|
|||
|
|
NOP SQ.xyz VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP LQI VF01,(VI02++)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
; context data:
|
|||
|
|
|
|||
|
|
; VF14 = shadow vec (magnitude defines length of shadow polys), in body coords
|
|||
|
|
; VF15 = tweak vec (small, parallel to shadow vec), in body coords
|
|||
|
|
; VF16-19 = body to frustum transform
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; 3-----0-----5
|
|||
|
|
; \ / \ /
|
|||
|
|
; \ / \ /
|
|||
|
|
; 1-----2
|
|||
|
|
; \ /
|
|||
|
|
; \ /
|
|||
|
|
; 4
|
|||
|
|
|
|||
|
|
|
|||
|
|
ShadowVolumeSkin:
|
|||
|
|
|
|||
|
|
; set up VF07 = VF14x*VF16 + VF14y*VF17 + VF14z*VF18 + VF19
|
|||
|
|
MULAx ACC,VF16,VF14x NOP
|
|||
|
|
MADDAy ACC,VF17,VF14y NOP
|
|||
|
|
MADDAz ACC,VF18,VF14z NOP
|
|||
|
|
MADDw VF07,VF19,VF00w NOP
|
|||
|
|
|
|||
|
|
; set up VF08 = VF15x*VF16 + VF15y*VF17 + VF15z*VF18 + VF19
|
|||
|
|
MULAx ACC,VF16,VF15x NOP
|
|||
|
|
MADDAy ACC,VF17,VF15y NOP
|
|||
|
|
MADDAz ACC,VF18,VF15z NOP
|
|||
|
|
MADDw VF08,VF19,VF00w IADDIU VI09,VI00,0x10 ; mask for Sw FMAC flag
|
|||
|
|
|
|||
|
|
NOP IADDIU VI08, VI00, 0
|
|||
|
|
|
|||
|
|
LoopSVS:
|
|||
|
|
|
|||
|
|
NOP LQ VF20,1(VI02) ; | Load vector 0
|
|||
|
|
NOP LQ VF21,2(VI02) ; | Load vector 1
|
|||
|
|
NOP LQ VF22,3(VI02) ; | Load vector 2
|
|||
|
|
NOP LQ VF23,4(VI02) ; | Load vector 3
|
|||
|
|
NOP LQ VF24,5(VI02) ; | Load vector 4
|
|||
|
|
|
|||
|
|
NOP MTIR VI01,VF20w ; | Load up matrix 0 index
|
|||
|
|
NOP LQ VF04,3(VI01)
|
|||
|
|
NOP LQ VF01,0(VI01)
|
|||
|
|
NOP LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
; v0
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x MTIR VI01,VF21w ; | Load up matrix 1 index
|
|||
|
|
MADDAx.xyz ACC,VF01,VF20x LQ VF04,3(VI01)
|
|||
|
|
MADDAy.xyz ACC,VF02,VF20y LQ VF01,0(VI01)
|
|||
|
|
MADDz.xyz VF20,VF03,VF20z LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
; v1
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x MTIR VI01,VF22w ; | Load up matrix 2 index
|
|||
|
|
MADDAx.xyz ACC,VF01,VF21x LQ VF04,3(VI01)
|
|||
|
|
MADDAy.xyz ACC,VF02,VF21y LQ VF01,0(VI01)
|
|||
|
|
MADDz.xyz VF21,VF03,VF21z LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
; v2
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x MTIR VI01,VF23w ; | Load up matrix 3 index
|
|||
|
|
MADDAx.xyz ACC,VF01,VF22x LQ VF04,3(VI01)
|
|||
|
|
MADDAy.xyz ACC,VF02,VF22y LQ VF01,0(VI01)
|
|||
|
|
MADDz.xyz VF22,VF03,VF22z LQ VF02,1(VI01)
|
|||
|
|
SUB.xyz VF26,VF21,VF20 LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
; v3
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x LQ VF25,6(VI02) ; | Load vector 5
|
|||
|
|
MADDAx.xyz ACC,VF01,VF23x MTIR VI01,VF24w ; | Load up matrix 4 index
|
|||
|
|
SUB.xyz VF27,VF22,VF20 LQ VF04,3(VI01)
|
|||
|
|
MADDAy.xyz ACC,VF02,VF23y LQ VF01,0(VI01)
|
|||
|
|
MADDz.xyz VF23,VF03,VF23z LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
; v4
|
|||
|
|
OPMULA.xyz ACC,VF26,VF27 NOP
|
|||
|
|
OPMSUB.xyz VF05,VF27,VF26 NOP
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x MTIR VI01,VF25w ; | Load up matrix 5 index
|
|||
|
|
MADDAx.xyz ACC,VF01,VF24x LQ VF04,3(VI01)
|
|||
|
|
MADDAy.xyz ACC,VF02,VF24y LQ VF01,0(VI01)
|
|||
|
|
MUL.xyz VF05,VF05,VF15 LQ VF02,1(VI01)
|
|||
|
|
MADDz.xyz VF24,VF03,VF24z LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
; v5
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF01,VF25x NOP
|
|||
|
|
ADDy.x VF05,VF05,VF05y NOP
|
|||
|
|
MADDAy.xyz ACC,VF02,VF25y NOP
|
|||
|
|
MADDz.xyz VF25,VF03,VF25z NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
SUB.xyz VF02,VF21,VF23 NOP
|
|||
|
|
ADDz.x VF00,VF05,VF05z NOP
|
|||
|
|
SUB.xyz VF06,VF22,VF24 NOP
|
|||
|
|
SUB.xyz VF05,VF21,VF24 NOP
|
|||
|
|
OPMULA.xyz ACC,VF02,VF26 ILW.w VI15,0(VI02)
|
|||
|
|
SUB.xyz VF04,VF25,VF20 FSAND VI01,2
|
|||
|
|
OPMSUB.xyz VF02,VF26,VF02 IBEQ VI01,VI00,CullPrism
|
|||
|
|
OPMULA.xyz ACC,VF05,VF06 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF06,VF05 NOP
|
|||
|
|
OPMULA.xyz ACC,VF04,VF27 NOP
|
|||
|
|
OPMSUB.xyz VF04,VF27,VF04 NOP
|
|||
|
|
|
|||
|
|
; compute and project v0,v1,v2 and their translates
|
|||
|
|
MULAx ACC,VF16,VF22x NOP
|
|||
|
|
MADDAy ACC,VF17,VF22y NOP
|
|||
|
|
MADDAz ACC,VF18,VF22z NOP
|
|||
|
|
MADDw VF22,VF08,VF00w NOP
|
|||
|
|
MADDw VF25,VF07,VF00w NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULA ACC,VF10,VF22 NOP
|
|||
|
|
MADDw VF12,VF11,VF22w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF12xyz,VF12w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x00003F
|
|||
|
|
NOP IBNE VI01,VI00,CullPrism
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULAx ACC,VF16,VF21x NOP
|
|||
|
|
MADDAy ACC,VF17,VF21y NOP
|
|||
|
|
MADDAz ACC,VF18,VF21z ERCPR P,VF22w
|
|||
|
|
MADDw VF21,VF08,VF00w DIV Q,VF00w,VF25w
|
|||
|
|
MADDw VF24,VF07,VF00w NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULAx ACC,VF16,VF20x MFIR.w VF22,VI00
|
|||
|
|
MADDAy ACC,VF17,VF20y NOP
|
|||
|
|
MADDAz ACC,VF18,VF20z NOP
|
|||
|
|
MADDw VF20,VF08,VF00w NOP
|
|||
|
|
MADDw VF23,VF07,VF00w NOP
|
|||
|
|
|
|||
|
|
MULA ACC,VF10,VF24 NOP
|
|||
|
|
MADDw VF01,VF11,VF24w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF01xyz,VF01w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x00003F
|
|||
|
|
NOP IBNE VI01,VI00,CullPrism
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULA ACC,VF10,VF25 NOP
|
|||
|
|
MADDw VF12,VF11,VF25w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF12xyz,VF12w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x00003F
|
|||
|
|
NOP IBNE VI01,VI00,CullPrism
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULA ACC,VF10,VF21 NOP
|
|||
|
|
MADDw VF12,VF11,VF21w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF12xyz,VF12w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x00003F
|
|||
|
|
NOP IBNE VI01,VI00,CullPrism
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULq.xyz VF25,VF25,Q DIV Q,VF00w,VF21w
|
|||
|
|
MUL.xyz VF02,VF02,VF15 NOP
|
|||
|
|
MUL.xyz VF03,VF03,VF15 NOP
|
|||
|
|
MUL.xyz VF04,VF04,VF15 NOP
|
|||
|
|
FTOI15.w VF21,VF00 MFP.w VF01,P
|
|||
|
|
ADDy.x VF02,VF02,VF02y ERCPR P,VF24w
|
|||
|
|
ADDx.y VF03,VF03,VF03x SQ.xyz VF25,6(VI02)
|
|||
|
|
|
|||
|
|
MULA ACC,VF10,VF23 NOP
|
|||
|
|
MADDw VF12,VF11,VF23w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF12xyz,VF12w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x00003F
|
|||
|
|
NOP IBNE VI01,VI00,CullPrism
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; vf20-25 = verts.
|
|||
|
|
|
|||
|
|
MULA ACC,VF10,VF20 NOP
|
|||
|
|
MADDw VF12,VF11,VF20w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF12xyz,VF12w NOP
|
|||
|
|
NOP NOP ; needs to be 3 nops
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FCAND VI01,0x00003F
|
|||
|
|
NOP IBNE VI01,VI00,CullPrism
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULq.xyz VF21,VF21,Q DIV Q,VF00w,VF20w
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULw.xyz VF22,VF22,VF01w SQ.w VF21,2(VI02)
|
|||
|
|
ADDx.z VF04,VF04,VF04x NOP
|
|||
|
|
MULx.w VF05,VF00,VF25x NOP
|
|||
|
|
ADDz.x VF02,VF02,VF02z SQ VF21,4(VI02)
|
|||
|
|
ADDz.y VF03,VF03,VF03z SQ VF22,16(VI02)
|
|||
|
|
ADDy.z VF04,VF04,VF04y SQ.xyz VF22,2(VI02)
|
|||
|
|
MULq.xyz VF20,VF20,Q DIV Q,VF00w,VF23w
|
|||
|
|
SUB.w VF23,VF00,VF00 IADDIU VI10, VI00, 0 ;FSAND VI10,2 ; get adc results (4 cycles after mac)
|
|||
|
|
ADDy.x VF05,VF00,VF25y IADDIU VI11, VI00, 0 ;FSAND VI11,2
|
|||
|
|
MULx.w VF22,VF00,VF22x IADDIU VI12, VI00, 0 ;FSAND VI12,2
|
|||
|
|
ADDy.x VF22,VF00,VF22y MFP.w VF01,P
|
|||
|
|
MULx.w VF26,VF00,VF21x NOP ;ISUBIU VI10,VI10,1
|
|||
|
|
ADDy.x VF26,VF00,VF21y NOP ;ISUBIU VI11,VI11,1
|
|||
|
|
|
|||
|
|
MULq.xyz VF23,VF23,Q NOP ;ISUBIU VI12,VI12,1
|
|||
|
|
|
|||
|
|
; SUB.w VF23,VF00,VF00 FSAND VI10,2 ; get adc results (4 cycles after mac)
|
|||
|
|
; ADDy.x VF05,VF00,VF25y FSAND VI11,2
|
|||
|
|
; MULx.w VF22,VF00,VF22x FSAND VI12,2
|
|||
|
|
; ADDy.x VF22,VF00,VF22y MFP.w VF01,P
|
|||
|
|
; MULx.w VF26,VF00,VF21x ISUBIU VI10,VI10,1
|
|||
|
|
; ADDy.x VF26,VF00,VF21y ISUBIU VI11,VI11,1
|
|||
|
|
;
|
|||
|
|
; MULq.xyz VF23,VF23,Q ISUBIU VI12,VI12,1
|
|||
|
|
MULw.xyz VF24,VF24,VF01w SQ.xyz VF21,12(VI02)
|
|||
|
|
|
|||
|
|
NOP SQ VF23,10(VI02)
|
|||
|
|
NOP MFIR.w VF23,VI12
|
|||
|
|
NOP ISW.w VI10,12(VI02)
|
|||
|
|
NOP ISW.w VI11,6(VI02)
|
|||
|
|
|
|||
|
|
; backface testing and colours (8 tests)
|
|||
|
|
SUB.xw VF01,VF22,VF26 MR32.xw VF04,VF24
|
|||
|
|
SUB.xw VF02,VF05,VF26 MFIR.w VF20,VI10
|
|||
|
|
NOP MFIR.w VF24,VI11
|
|||
|
|
NOP MR32.xw VF06,VF23
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
SUB.xw VF03,VF05,VF04 MFIR.w VF25,VI12
|
|||
|
|
MULAx.w ACC,VF01,VF02x SQ VF23,18(VI02)
|
|||
|
|
MSUBx.w VF00,VF02,VF01x SQ VF20,14(VI02)
|
|||
|
|
|
|||
|
|
SUB.xw VF01,VF06,VF04 MR32.xw VF20,VF20
|
|||
|
|
MULAx.w ACC,VF03,VF02x SQ VF24,8(VI02)
|
|||
|
|
MSUBx.w VF00,VF02,VF03x SQ VF25,20(VI02)
|
|||
|
|
|
|||
|
|
SUB.xw VF02,VF06,VF26 FMAND VI01,VI09
|
|||
|
|
MULAx.w ACC,VF03,VF01x ISUBIU VI01,VI01,8
|
|||
|
|
MSUBx.w VF00,VF01,VF03x ISW.xyz VI01,5(VI02)
|
|||
|
|
|
|||
|
|
SUB.xw VF03,VF20,VF26 FMAND VI01,VI09
|
|||
|
|
MULAx.w ACC,VF02,VF01x ISUBIU VI01,VI01,8
|
|||
|
|
MSUBx.w VF00,VF01,VF02x ISW.xyz VI01,7(VI02)
|
|||
|
|
|
|||
|
|
SUB.xw VF01,VF20,VF22 FMAND VI01,VI09
|
|||
|
|
MULAx.w ACC,VF02,VF03x ISUBIU VI01,VI01,8
|
|||
|
|
MSUBx.w VF00,VF03,VF02x ISW.xyz VI01,9(VI02)
|
|||
|
|
|
|||
|
|
SUB.xw VF02,VF06,VF22 FMAND VI01,VI09
|
|||
|
|
MULAx.w ACC,VF01,VF03x ISUBIU VI01,VI01,8
|
|||
|
|
MSUBx.w VF00,VF03,VF01x ISW.xyz VI01,11(VI02)
|
|||
|
|
|
|||
|
|
SUB.xw VF03,VF06,VF05 FMAND VI01,VI09
|
|||
|
|
MULAx.w ACC,VF01,VF02x ISUBIU VI01,VI01,8
|
|||
|
|
MSUBx.w VF00,VF02,VF01x ISW.xyz VI01,13(VI02)
|
|||
|
|
|
|||
|
|
NOP FMAND VI01,VI09
|
|||
|
|
MULAx.w ACC,VF03,VF02x ISUBIU VI01,VI01,8
|
|||
|
|
MSUBx.w VF00,VF02,VF03x ISW.xyz VI01,15(VI02)
|
|||
|
|
|
|||
|
|
NOP FMAND VI01,VI09
|
|||
|
|
NOP ISUBIU VI01,VI01,8
|
|||
|
|
NOP ISW.xyz VI01,17(VI02)
|
|||
|
|
|
|||
|
|
NOP FMAND VI01,VI09
|
|||
|
|
NOP ISUBIU VI01,VI01,8
|
|||
|
|
NOP ISW.xyz VI01,19(VI02)
|
|||
|
|
|
|||
|
|
NOP IADDIU VI08, VI00, 1
|
|||
|
|
NOP XGKICK VI02
|
|||
|
|
|
|||
|
|
CullPrism:
|
|||
|
|
|
|||
|
|
NOP IBGEZ VI15,LoopSVS
|
|||
|
|
NOP IADDIU VI02,VI02,21
|
|||
|
|
|
|||
|
|
NOP IBEQ VI08, VI00, DummyKick
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP[E] NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
DummyKick:
|
|||
|
|
NOP ISUBIU VI01, VI02, 1
|
|||
|
|
NOP IADDIU VI08, VI00, 0x4000
|
|||
|
|
NOP IADDIU VI08, VI08, 0x4000
|
|||
|
|
NOP ISW.x VI08, 0(VI01)
|
|||
|
|
NOP XGKICK VI01
|
|||
|
|
|
|||
|
|
NOP[E] NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; original unoptimised version
|
|||
|
|
|
|||
|
|
LoopSVS:
|
|||
|
|
; v0
|
|||
|
|
NOP LQ VF20,0(VI02)
|
|||
|
|
NOP MTIR VI01,VF20w
|
|||
|
|
NOP LQ VF04,3(VI01)
|
|||
|
|
NOP LQ VF01,0(VI01)
|
|||
|
|
NOP LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF01,VF20x NOP
|
|||
|
|
MADDAy.xyz ACC,VF02,VF20y NOP
|
|||
|
|
MADDz.xyz VF20,VF03,VF20z NOP
|
|||
|
|
|
|||
|
|
; v1
|
|||
|
|
NOP LQ VF21,1(VI02)
|
|||
|
|
NOP MTIR VI01,VF21w
|
|||
|
|
NOP LQ VF04,3(VI01)
|
|||
|
|
NOP LQ VF01,0(VI01)
|
|||
|
|
NOP LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF01,VF21x NOP
|
|||
|
|
MADDAy.xyz ACC,VF02,VF21y NOP
|
|||
|
|
MADDz.xyz VF21,VF03,VF21z NOP
|
|||
|
|
|
|||
|
|
; v2
|
|||
|
|
NOP LQ VF22,2(VI02)
|
|||
|
|
NOP MTIR VI01,VF22w
|
|||
|
|
NOP LQ VF04,3(VI01)
|
|||
|
|
NOP LQ VF01,0(VI01)
|
|||
|
|
NOP LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF01,VF22x NOP
|
|||
|
|
MADDAy.xyz ACC,VF02,VF22y NOP
|
|||
|
|
MADDz.xyz VF22,VF03,VF22z NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
; generate n021
|
|||
|
|
SUB.xyz VF05,VF20,VF22 NOP
|
|||
|
|
SUB.xyz VF06,VF21,VF22 NOP
|
|||
|
|
OPMULA.xyz ACC,VF05,VF06 NOP
|
|||
|
|
OPMSUB.xyz VF01,VF06,VF05 NOP
|
|||
|
|
|
|||
|
|
; dot with light vector
|
|||
|
|
MUL.xyz VF01,VF01,VF15 NOP
|
|||
|
|
ADDy.x VF01,VF01,VF01y NOP
|
|||
|
|
ADDz.x VF01,VF01,VF01z MOVE VF02,VF01
|
|||
|
|
|
|||
|
|
; cull if dot product negative
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF02 FSAND VI01,2
|
|||
|
|
NOP IBEQ VI01,VI00,CullPrism
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
; v3
|
|||
|
|
NOP LQ VF23,3(VI02)
|
|||
|
|
NOP MTIR VI01,VF23w
|
|||
|
|
NOP LQ VF04,3(VI01)
|
|||
|
|
NOP LQ VF01,0(VI01)
|
|||
|
|
NOP LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF01,VF23x NOP
|
|||
|
|
MADDAy.xyz ACC,VF02,VF23y NOP
|
|||
|
|
MADDz.xyz VF23,VF03,VF23z NOP
|
|||
|
|
|
|||
|
|
; v4
|
|||
|
|
NOP LQ VF24,4(VI02)
|
|||
|
|
NOP MTIR VI01,VF24w
|
|||
|
|
NOP LQ VF04,3(VI01)
|
|||
|
|
NOP LQ VF01,0(VI01)
|
|||
|
|
NOP LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF01,VF24x NOP
|
|||
|
|
MADDAy.xyz ACC,VF02,VF24y NOP
|
|||
|
|
MADDz.xyz VF24,VF03,VF24z NOP
|
|||
|
|
|
|||
|
|
; v5
|
|||
|
|
NOP LQ VF25,5(VI02)
|
|||
|
|
NOP MTIR VI01,VF25w
|
|||
|
|
NOP LQ VF04,3(VI01)
|
|||
|
|
NOP LQ VF01,0(VI01)
|
|||
|
|
NOP LQ VF02,1(VI01)
|
|||
|
|
NOP LQ VF03,2(VI01)
|
|||
|
|
|
|||
|
|
ADDAx.xyz ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx.xyz ACC,VF01,VF25x NOP
|
|||
|
|
MADDAy.xyz ACC,VF02,VF25y NOP
|
|||
|
|
MADDz.xyz VF25,VF03,VF25z NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; generate n013
|
|||
|
|
SUB.xyz VF06,VF20,VF21 NOP
|
|||
|
|
SUB.xyz VF05,VF23,VF21 NOP
|
|||
|
|
OPMULA.xyz ACC,VF05,VF06 NOP
|
|||
|
|
OPMSUB.xyz VF02,VF06,VF05 NOP
|
|||
|
|
|
|||
|
|
; generate n241
|
|||
|
|
SUB.xyz VF06,VF22,VF24 NOP
|
|||
|
|
SUB.xyz VF05,VF21,VF24 NOP
|
|||
|
|
OPMULA.xyz ACC,VF05,VF06 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF06,VF05 NOP
|
|||
|
|
|
|||
|
|
; generate n052
|
|||
|
|
SUB.xyz VF06,VF20,VF25 NOP
|
|||
|
|
SUB.xyz VF05,VF22,VF25 NOP
|
|||
|
|
OPMULA.xyz ACC,VF05,VF06 NOP
|
|||
|
|
OPMSUB.xyz VF04,VF06,VF05 NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
; take dot products with light vec
|
|||
|
|
MUL.xyz VF02,VF02,VF15 NOP
|
|||
|
|
MUL.xyz VF03,VF03,VF15 NOP
|
|||
|
|
MUL.xyz VF04,VF04,VF15 NOP
|
|||
|
|
|
|||
|
|
NOP NOP
|
|||
|
|
ADDy.x VF02,VF02,VF02y NOP
|
|||
|
|
ADDx.y VF03,VF03,VF03x NOP
|
|||
|
|
ADDx.z VF04,VF04,VF04x NOP
|
|||
|
|
|
|||
|
|
NOP NOP
|
|||
|
|
ADDz.x VF02,VF02,VF02z IADDIU VI10,VI00,0x80
|
|||
|
|
ADDz.y VF03,VF03,VF03z IADDIU VI11,VI00,0x40
|
|||
|
|
ADDy.z VF04,VF04,VF04y IADDIU VI12,VI00,0x20
|
|||
|
|
|
|||
|
|
; get ADC results
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FMAND VI10,VI10
|
|||
|
|
NOP FMAND VI11,VI11
|
|||
|
|
NOP FMAND VI12,VI12
|
|||
|
|
|
|||
|
|
NOP ISUBIU VI10,VI10,1
|
|||
|
|
NOP ISUBIU VI11,VI11,1
|
|||
|
|
NOP ISUBIU VI12,VI12,1
|
|||
|
|
|
|||
|
|
|
|||
|
|
; compute and project v0,v1,v2 and their translates
|
|||
|
|
MULAx ACC,VF16,VF20x NOP
|
|||
|
|
MADDAy ACC,VF17,VF20y NOP
|
|||
|
|
MADDAz ACC,VF18,VF20z NOP
|
|||
|
|
MADDw VF20,VF08,VF00w NOP
|
|||
|
|
MADDw VF23,VF07,VF00w NOP
|
|||
|
|
NOP DIV Q,VF00w,VF20w
|
|||
|
|
MULq.xyz VF20,VF20,Q WAITQ
|
|||
|
|
NOP DIV Q,VF00w,VF23w
|
|||
|
|
MULq.xyz VF23,VF23,Q WAITQ
|
|||
|
|
|
|||
|
|
MULAx ACC,VF16,VF21x NOP
|
|||
|
|
MADDAy ACC,VF17,VF21y NOP
|
|||
|
|
MADDAz ACC,VF18,VF21z NOP
|
|||
|
|
MADDw VF21,VF08,VF00w NOP
|
|||
|
|
MADDw VF24,VF07,VF00w NOP
|
|||
|
|
NOP DIV Q,VF00w,VF21w
|
|||
|
|
MULq.xyz VF21,VF21,Q WAITQ
|
|||
|
|
NOP DIV Q,VF00w,VF24w
|
|||
|
|
MULq.xyz VF24,VF24,Q WAITQ
|
|||
|
|
|
|||
|
|
MULAx ACC,VF16,VF22x NOP
|
|||
|
|
MADDAy ACC,VF17,VF22y NOP
|
|||
|
|
MADDAz ACC,VF18,VF22z NOP
|
|||
|
|
MADDw VF22,VF08,VF00w NOP
|
|||
|
|
MADDw VF25,VF07,VF00w NOP
|
|||
|
|
NOP DIV Q,VF00w,VF22w
|
|||
|
|
MULq.xyz VF22,VF22,Q WAITQ
|
|||
|
|
NOP DIV Q,VF00w,VF25w
|
|||
|
|
MULq.xyz VF25,VF25,Q WAITQ
|
|||
|
|
|
|||
|
|
|
|||
|
|
; 0
|
|||
|
|
; /|\
|
|||
|
|
; 2---1
|
|||
|
|
; | | |
|
|||
|
|
; | 3 |
|
|||
|
|
; |/ \|
|
|||
|
|
; 5---4
|
|||
|
|
;
|
|||
|
|
; adc's a(01), b(12), c(20)
|
|||
|
|
;
|
|||
|
|
; 2, 1, 5, 4, 3, 1, 0, 2, 3, 5
|
|||
|
|
; 1, 1, b, b, 0, a, a, 0, c, c
|
|||
|
|
|
|||
|
|
; store positions and adc's
|
|||
|
|
FTOI15.w VF22,VF00 NOP
|
|||
|
|
NOP SQ VF22,1(VI02)
|
|||
|
|
FTOI15.w VF21,VF00 NOP
|
|||
|
|
NOP SQ VF21,3(VI02)
|
|||
|
|
|
|||
|
|
FTOI15.w VF25,VF00 NOP
|
|||
|
|
; NOP MFIR.w VF25,VI11
|
|||
|
|
NOP SQ VF25,5(VI02)
|
|||
|
|
FTOI15.w VF24,VF00 NOP
|
|||
|
|
; NOP MFIR.w VF24,VI11
|
|||
|
|
NOP SQ VF24,7(VI02)
|
|||
|
|
|
|||
|
|
;FTOI15.w VF23,VF00 NOP
|
|||
|
|
NOP MFIR.w VF23,VI00
|
|||
|
|
NOP SQ VF23,9(VI02)
|
|||
|
|
|
|||
|
|
; NOP MFIR.w VF21,VI10
|
|||
|
|
FTOI15.w VF21,VF00 NOP
|
|||
|
|
NOP SQ VF21,11(VI02)
|
|||
|
|
FTOI15.w VF20,VF00 NOP
|
|||
|
|
; NOP MFIR.w VF20,VI10
|
|||
|
|
NOP SQ VF20,13(VI02)
|
|||
|
|
|
|||
|
|
;FTOI15.w VF22,VF00 NOP
|
|||
|
|
NOP MFIR.w VF22,VI00
|
|||
|
|
NOP SQ VF22,15(VI02)
|
|||
|
|
|
|||
|
|
; NOP MFIR.w VF23,VI12
|
|||
|
|
FTOI15.w VF23,VF00 NOP
|
|||
|
|
NOP SQ VF23,17(VI02)
|
|||
|
|
; NOP MFIR.w VF25,VI12
|
|||
|
|
FTOI15.w VF25,VF00 NOP
|
|||
|
|
NOP SQ VF25,19(VI02)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; backface testing and colours (8 tests)
|
|||
|
|
NOP IADDIU VI10,VI00,0x10
|
|||
|
|
NOP IADDIU VI11,VI00,0x08
|
|||
|
|
|
|||
|
|
; 215
|
|||
|
|
SUB.xyz VF01,VF22,VF21 NOP
|
|||
|
|
SUB.xyz VF02,VF25,VF21 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyzw VI01,4(VI02)
|
|||
|
|
|
|||
|
|
; 145
|
|||
|
|
SUB.xyz VF01,VF21,VF24 NOP
|
|||
|
|
SUB.xyz VF02,VF25,VF24 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyzw VI01,6(VI02)
|
|||
|
|
|
|||
|
|
; 543
|
|||
|
|
SUB.xyz VF01,VF25,VF24 NOP
|
|||
|
|
SUB.xyz VF02,VF23,VF24 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyzw VI01,8(VI02)
|
|||
|
|
|
|||
|
|
; 134
|
|||
|
|
SUB.xyz VF01,VF21,VF23 NOP
|
|||
|
|
SUB.xyz VF02,VF24,VF23 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyzw VI01,10(VI02)
|
|||
|
|
|
|||
|
|
; 103
|
|||
|
|
SUB.xyz VF01,VF21,VF20 NOP
|
|||
|
|
SUB.xyz VF02,VF23,VF20 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyzw VI01,12(VI02)
|
|||
|
|
|
|||
|
|
; 012
|
|||
|
|
SUB.xyz VF01,VF20,VF21 NOP
|
|||
|
|
SUB.xyz VF02,VF22,VF21 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyzw VI01,14(VI02)
|
|||
|
|
|
|||
|
|
; 023
|
|||
|
|
SUB.xyz VF01,VF20,VF22 NOP
|
|||
|
|
SUB.xyz VF02,VF23,VF22 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyzw VI01,16(VI02)
|
|||
|
|
|
|||
|
|
; 253
|
|||
|
|
SUB.xyz VF01,VF22,VF25 NOP
|
|||
|
|
SUB.xyz VF02,VF23,VF25 NOP
|
|||
|
|
OPMULA.xyz ACC,VF01,VF02 NOP
|
|||
|
|
OPMSUB.xyz VF03,VF02,VF01 MOVE VF01,VF02
|
|||
|
|
MULz.w VF00,VF00,VF03z MOVE VF01,VF02
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
;NOP NOP
|
|||
|
|
FTOI0 VF02,VF01 FMAND VI01,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI11
|
|||
|
|
NOP ISW.xyz VI01,18(VI02)
|
|||
|
|
|
|||
|
|
NextPrism:
|
|||
|
|
; loop control
|
|||
|
|
NOP IADDIU VI02,VI02,20
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
; clip triangle if not already culled and if part of it may be in the view frustum and another part in the outer frustum
|
|||
|
|
; i.e. if clip if (ADC==0 && viewAND==0 && outerOR!=0)
|
|||
|
|
|
|||
|
|
; ADC bit should be set for any of the following:
|
|||
|
|
; - ADC set already
|
|||
|
|
; - outerOR!=0 (i.e. if culling renderer would cull it)
|
|||
|
|
; - viewAND!=0 (trivial rejection)
|
|||
|
|
|
|||
|
|
Clip:
|
|||
|
|
|
|||
|
|
; reconstruct world-to-frustum transform
|
|||
|
|
MULA ACC,VF10,VF12 NOP
|
|||
|
|
MADDw VF04,VF11,VF12w NOP
|
|||
|
|
MULA ACC,VF10,VF13 NOP
|
|||
|
|
MADDw VF05,VF11,VF13w NOP
|
|||
|
|
MULA ACC,VF10,VF14 NOP
|
|||
|
|
MADDw VF06,VF11,VF14w NOP
|
|||
|
|
MULA ACC,VF10,VF15 NOP
|
|||
|
|
MADDw VF07,VF11,VF15w NOP
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
;---------------------------------------------------------
|
|||
|
|
.if 0
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
; loop prologue
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF07,VF00x LQ VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP
|
|||
|
|
MADDAx ACC,VF04,VF02x NOP
|
|||
|
|
MADDAy ACC,VF05,VF02y NOP
|
|||
|
|
MADDz VF03,VF06,VF02z NOP
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w IADDIU VI10,VI00,0
|
|||
|
|
|
|||
|
|
; main clip-testing loop
|
|||
|
|
LoopC: ADDAw.xyz ACC,VF00,VF03w MTIR VI07,VF01w
|
|||
|
|
MULAw.w ACC,VF03,VF00w IADD VI03,VI03,VI04
|
|||
|
|
MADDAz.x ACC,VF03,VF09z LQ VF01,-1(VI03)
|
|||
|
|
MADDAw.y ACC,VF03,VF09w FCOR VI01,0xFEFBEF
|
|||
|
|
MSUBAx.z ACC,VF09,VF03x ISUB VI07,VI07,VI01
|
|||
|
|
MSUBAy.w ACC,VF09,VF03y FCOR VI01,0xFDF7DF
|
|||
|
|
ITOF4.xyz VF02,VF01 ISUB VI07,VI07,VI01
|
|||
|
|
MADDx VF00,VF00,VF00x FCAND VI01,0x03FFFF
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
ADDAx ACC,VF07,VF00x IADD VI02,VI02,VI04
|
|||
|
|
MADDAx ACC,VF04,VF02x IAND VI08,VI10,VI11
|
|||
|
|
MADDAy ACC,VF05,VF02y IADDIU VI11,VI10,0
|
|||
|
|
MADDz VF03,VF06,VF02z FMOR VI10,VI00
|
|||
|
|
NOP IAND VI01,VI08,VI10
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
NOP IBNE VI02,VI05,LoopC
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w ISW.w VI07,-1(VI02)
|
|||
|
|
|
|||
|
|
;---------------------------------------------------------
|
|||
|
|
.else
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
; initialise source pointer
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
LoopC:
|
|||
|
|
; step source pointer
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
|
|||
|
|
; load vertex
|
|||
|
|
NOP LQ VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; convert to float
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP
|
|||
|
|
|
|||
|
|
; get ADC field
|
|||
|
|
NOP MTIR VI07,VF01w
|
|||
|
|
|
|||
|
|
; transform to outer volume
|
|||
|
|
ADDAx ACC,VF07,VF00x NOP
|
|||
|
|
MADDAx ACC,VF04,VF02x NOP
|
|||
|
|
MADDAy ACC,VF05,VF02y NOP
|
|||
|
|
MADDz VF03,VF06,VF02z NOP
|
|||
|
|
|
|||
|
|
; step destination pointer
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; generate clip codes
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w NOP
|
|||
|
|
|
|||
|
|
; generate pre-AND and advance outcode queue
|
|||
|
|
NOP IAND VI08,VI10,VI11
|
|||
|
|
NOP IADDIU VI11,VI10,0
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; generate view-AND.z, combine with ADC
|
|||
|
|
NOP FCOR VI01,0xFEFBEF ; near
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
NOP FCOR VI01,0xFDF7DF ; far
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
|
|||
|
|
; get outer-OR.xyz, combine with ADC
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
|
|||
|
|
; generate flags for view-AND.xy
|
|||
|
|
ADDAw.xyz ACC,VF00,VF03w NOP
|
|||
|
|
MULAw.w ACC,VF03,VF00w NOP
|
|||
|
|
MADDAz.x ACC,VF03,VF09z NOP
|
|||
|
|
MADDAw.y ACC,VF03,VF09w NOP
|
|||
|
|
MSUBAx.z ACC,VF09,VF03x NOP
|
|||
|
|
MSUBAy.w ACC,VF09,VF03y NOP
|
|||
|
|
MADDx VF00,VF00,VF00x NOP ; result is (w+Sx*x,w+Sy*y,w-Sx*x,w-Sy*y)
|
|||
|
|
|
|||
|
|
; get flags for view-AND.xy
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FMOR VI10,VI00
|
|||
|
|
|
|||
|
|
; generate view-AND.xy, combine with ADC
|
|||
|
|
NOP IAND VI01,VI08,VI10
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
|
|||
|
|
; store computed w component
|
|||
|
|
NOP ISW.w VI07,-1(VI02)
|
|||
|
|
|
|||
|
|
; loop control
|
|||
|
|
NOP IBNE VI02,VI05,LoopC
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
;---------------------------------------------------------
|
|||
|
|
.else
|
|||
|
|
; backface cull version
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
; initialise source pointer
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
|
|||
|
|
; set ADC mask
|
|||
|
|
NOP IADDIU VI09,VI00,0x4000
|
|||
|
|
NOP IADDIU VI09,VI09,0x4000
|
|||
|
|
|
|||
|
|
LoopC:
|
|||
|
|
; step source pointer
|
|||
|
|
NOP IADD VI03,VI03,VI04
|
|||
|
|
|
|||
|
|
; load vertex
|
|||
|
|
NOP LQ VF01,-1(VI03)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; convert to float
|
|||
|
|
ITOF4.xyz VF02,VF01 NOP
|
|||
|
|
|
|||
|
|
; get ADC field
|
|||
|
|
NOP MTIR VI14,VF01w
|
|||
|
|
NOP IAND VI07,VI14,VI09
|
|||
|
|
|
|||
|
|
; transform to outer volume
|
|||
|
|
ADDAx ACC,VF07,VF00x NOP
|
|||
|
|
MADDAx ACC,VF04,VF02x NOP
|
|||
|
|
MADDAy ACC,VF05,VF02y NOP
|
|||
|
|
MADDz VF03,VF06,VF02z NOP
|
|||
|
|
|
|||
|
|
; step destination pointer
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; generate clip codes
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w NOP
|
|||
|
|
|
|||
|
|
; generate pre-AND and advance outcode queue
|
|||
|
|
NOP IAND VI08,VI10,VI11
|
|||
|
|
NOP IADDIU VI11,VI10,0
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; generate view-AND.z, combine with ADC
|
|||
|
|
NOP FCOR VI01,0xFEFBEF ; near
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
NOP FCOR VI01,0xFDF7DF ; far
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
|
|||
|
|
; get outer-OR.xyz, combine with ADC
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
|
|||
|
|
; generate flags for view-AND.xy
|
|||
|
|
ADDAw.xyz ACC,VF00,VF03w NOP
|
|||
|
|
MULAw.w ACC,VF03,VF00w NOP
|
|||
|
|
MADDAz.x ACC,VF03,VF09z NOP
|
|||
|
|
MADDAw.y ACC,VF03,VF09w NOP
|
|||
|
|
MSUBAx.z ACC,VF09,VF03x NOP
|
|||
|
|
MSUBAy.w ACC,VF09,VF03y NOP
|
|||
|
|
MADDx VF00,VF00,VF00x NOP ; result is (w+Sx*x,w+Sy*y,w-Sx*x,w-Sy*y)
|
|||
|
|
|
|||
|
|
; get flags for view-AND.xy
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP FMOR VI10,VI00
|
|||
|
|
|
|||
|
|
; inc by 1
|
|||
|
|
NOP IADDIU VI07,VI07,1
|
|||
|
|
|
|||
|
|
; generate view-AND.xy, combine with ADC
|
|||
|
|
NOP IAND VI01,VI08,VI10
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
|
|||
|
|
; will it be clipped?
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI07,VI00,WontBeClipped
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; set both adc and clip-bit (0x4000)
|
|||
|
|
NOP ISUBIU VI01,VI14,0x4000
|
|||
|
|
NOP ISW.w VI01,-1(VI02)
|
|||
|
|
WontBeClipped:
|
|||
|
|
|
|||
|
|
; loop control
|
|||
|
|
NOP IBNE VI02,VI05,LoopC
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised version
|
|||
|
|
;
|
|||
|
|
|
|||
|
|
; loop prologue
|
|||
|
|
NOP IADD VI03,VI02,VI04
|
|||
|
|
ADDAx ACC,VF07,VF00x LQ VF01,-1(VI03)
|
|||
|
|
ITOF4.xyz VF02,VF01 IADDIU VI09,VI00,0x4000
|
|||
|
|
MADDAx ACC,VF04,VF02x IADDIU VI09,VI09,0x4000
|
|||
|
|
MADDAy ACC,VF05,VF02y NOP
|
|||
|
|
MADDz VF03,VF06,VF02z NOP
|
|||
|
|
|
|||
|
|
; main clip-testing loop
|
|||
|
|
LoopC: NOP IBEQ VI02,VI05,AllClipped
|
|||
|
|
CLIPw.xyz VF03xyz,VF03w MTIR VI14,VF01w
|
|||
|
|
ADDAw.xyz ACC,VF00,VF03w IAND VI07,VI14,VI09
|
|||
|
|
MULAw.w ACC,VF03,VF00w IADD VI03,VI03,VI04
|
|||
|
|
MADDAz.x ACC,VF03,VF09z LQ VF01,-1(VI03)
|
|||
|
|
MADDAw.y ACC,VF03,VF09w FCOR VI01,0xFEFBEF
|
|||
|
|
MSUBAx.z ACC,VF09,VF03x ISUB VI07,VI07,VI01
|
|||
|
|
MSUBAy.w ACC,VF09,VF03y FCOR VI01,0xFDF7DF
|
|||
|
|
ITOF4.xyz VF02,VF01 ISUB VI07,VI07,VI01
|
|||
|
|
MADDx VF00,VF00,VF00x FCAND VI01,0x03FFFF
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
ADDAx ACC,VF07,VF00x IADD VI02,VI02,VI04
|
|||
|
|
MADDAx ACC,VF04,VF02x IAND VI08,VI10,VI11
|
|||
|
|
MADDAy ACC,VF05,VF02y IADDIU VI11,VI10,0
|
|||
|
|
MADDz VF03,VF06,VF02z FMOR VI10,VI00
|
|||
|
|
NOP IAND VI01,VI08,VI10
|
|||
|
|
NOP ISUB VI07,VI07,VI01
|
|||
|
|
NOP IADDIU VI07,VI07,1
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI07,VI00,LoopC
|
|||
|
|
NOP ISUBIU VI01,VI14,0x4000
|
|||
|
|
NOP IBNE VI02,VI05,LoopC
|
|||
|
|
NOP ISW.w VI01,-1(VI02)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
.endif
|
|||
|
|
;---------------------------------------------------------
|
|||
|
|
|
|||
|
|
AllClipped:
|
|||
|
|
; reset pointer
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
; set the EOP bit of the previous tag
|
|||
|
|
NOP ILW.x VI01,0(VI12)
|
|||
|
|
NOP IADDIU VI01,VI01,0x4000
|
|||
|
|
NOP IADDIU VI01,VI01,0x4000
|
|||
|
|
NOP ISW.x VI01,0(VI12)
|
|||
|
|
|
|||
|
|
; set fan buffer base
|
|||
|
|
NOP ISUBIU VI12,VI13,288 ; MAX_VU1_BUFFER - # regs to save
|
|||
|
|
|
|||
|
|
; kick the context (which might be just a dummy giftag)
|
|||
|
|
; this stalls until the GS has finished with the memory we want to use as the fan buffer
|
|||
|
|
NOP XGKICK VI13
|
|||
|
|
|
|||
|
|
; the fan buffer is now guaranteed not to be in use by the GS or DMAC
|
|||
|
|
|
|||
|
|
; save some registers
|
|||
|
|
NOP SQ VF20,-12(VI12)
|
|||
|
|
NOP SQ VF21,-11(VI12)
|
|||
|
|
NOP SQ VF22,-10(VI12)
|
|||
|
|
NOP SQ VF23,-9(VI12)
|
|||
|
|
NOP SQ VF24,-8(VI12)
|
|||
|
|
NOP SQ VF25,-7(VI12)
|
|||
|
|
NOP SQ VF26,-6(VI12)
|
|||
|
|
NOP SQ VF27,-5(VI12)
|
|||
|
|
NOP SQ VF28,-4(VI12)
|
|||
|
|
NOP SQ VF29,-3(VI12)
|
|||
|
|
NOP SQ VF30,-2(VI12)
|
|||
|
|
NOP SQ VF31,-1(VI12)
|
|||
|
|
|
|||
|
|
; set new giftag pointer (the preclipped tristrip)
|
|||
|
|
NOP ISUBIU VI13,VI02,1
|
|||
|
|
|
|||
|
|
; output pointer = fan buffer base
|
|||
|
|
NOP IADDIU VI03,VI12,0
|
|||
|
|
|
|||
|
|
|
|||
|
|
; frustum planes:
|
|||
|
|
;
|
|||
|
|
; 0x0020 far
|
|||
|
|
; 0x0010 near
|
|||
|
|
; 0x0008 top
|
|||
|
|
; 0x0004 bottom
|
|||
|
|
; 0x0002 left
|
|||
|
|
; 0x0001 right
|
|||
|
|
;
|
|||
|
|
; 1---------0
|
|||
|
|
; |\ 3 /|
|
|||
|
|
; | *-----* |
|
|||
|
|
; | | (5) | |
|
|||
|
|
; |1| 4 |0|
|
|||
|
|
; | | | |
|
|||
|
|
; | *-----* |
|
|||
|
|
; |/ 2 \|
|
|||
|
|
; *---------*
|
|||
|
|
|
|||
|
|
|
|||
|
|
; registers used:
|
|||
|
|
;
|
|||
|
|
; VF20: p[j0], m[j0]
|
|||
|
|
; VF21: p[j1], m[j1]
|
|||
|
|
; VF22: p[j2], m[j2]
|
|||
|
|
; VF23: p[j3], m[j3]
|
|||
|
|
; VF24: p[j4], m[j4]
|
|||
|
|
; VF25: p[j5], m[j5]
|
|||
|
|
;
|
|||
|
|
; VF26: x[i0], o[i0]
|
|||
|
|
; VF27: x[i1], o[i1]
|
|||
|
|
; VF28: x[i2], o[i2]
|
|||
|
|
;
|
|||
|
|
; VF30: e0, flags(e0), just the w-component
|
|||
|
|
; VF31: e1, flags(e1)
|
|||
|
|
;
|
|||
|
|
;
|
|||
|
|
; VI12: fan buffer base
|
|||
|
|
|
|||
|
|
|
|||
|
|
; skip the 1st 2 vertices
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP ISUB VI01,VI02,VI05
|
|||
|
|
NOP IADD VI08,VI02,VI04
|
|||
|
|
NOP IBGEZ VI01,PostClip
|
|||
|
|
NOP ILW.w VI01,-1(VI08)
|
|||
|
|
|
|||
|
|
; loop over strip, clipping the triangles that are marked with clip bit 0x4000
|
|||
|
|
ClipLoop:
|
|||
|
|
NOP IBEQ VI02,VI05,KickFans
|
|||
|
|
NOP IADDIU VI08,VI00,0x4000
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP IAND VI08,VI01,VI08
|
|||
|
|
NOP IADD VI01,VI02,VI04
|
|||
|
|
NOP IBEQ VI08,VI00,ClipLoop
|
|||
|
|
NOP ILW.w VI01,-1(VI01)
|
|||
|
|
|
|||
|
|
|
|||
|
|
; go ahead with clipping...
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-------------------------------
|
|||
|
|
; load vertex coords from memory
|
|||
|
|
;-------------------------------
|
|||
|
|
|
|||
|
|
NOP LQ VF07,-1(VI02)
|
|||
|
|
NOP ISUB VI01,VI02,VI04
|
|||
|
|
NOP LQ VF06,-1(VI01)
|
|||
|
|
NOP ISUB VI01,VI01,VI04
|
|||
|
|
NOP LQ VF05,-1(VI01)
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------
|
|||
|
|
; convert to float
|
|||
|
|
;-----------------
|
|||
|
|
|
|||
|
|
ITOF4.xyz VF07,VF07 NOP
|
|||
|
|
ITOF4.xyz VF06,VF06 NOP
|
|||
|
|
ITOF4.xyz VF05,VF05 NOP
|
|||
|
|
|
|||
|
|
;------------------------
|
|||
|
|
; apply frustum transform
|
|||
|
|
;------------------------
|
|||
|
|
|
|||
|
|
; reconstruct world-to-frustum transform
|
|||
|
|
MULA ACC,VF10,VF15 NOP
|
|||
|
|
MADDw VF04,VF11,VF15w NOP
|
|||
|
|
MULA ACC,VF10,VF12 NOP
|
|||
|
|
MADDw VF01,VF11,VF12w NOP
|
|||
|
|
MULA ACC,VF10,VF13 NOP
|
|||
|
|
MADDw VF02,VF11,VF13w NOP
|
|||
|
|
MULA ACC,VF10,VF14 NOP
|
|||
|
|
MADDw VF03,VF11,VF14w NOP
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx ACC,VF01,VF05x NOP
|
|||
|
|
MADDAy ACC,VF02,VF05y NOP
|
|||
|
|
MADDz VF26,VF03,VF05z NOP
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx ACC,VF01,VF06x NOP
|
|||
|
|
MADDAy ACC,VF02,VF06y NOP
|
|||
|
|
MADDz VF27,VF03,VF06z NOP
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF04,VF00x NOP
|
|||
|
|
MADDAx ACC,VF01,VF07x NOP
|
|||
|
|
MADDAy ACC,VF02,VF07y NOP
|
|||
|
|
MADDz VF28,VF03,VF07z NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
; reorder the vertices
|
|||
|
|
;
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
; zero the swap flags
|
|||
|
|
NOP IADDIU VI10,VI00,0
|
|||
|
|
|
|||
|
|
; set up mask 0x0E
|
|||
|
|
NOP IADDIU VI07,VI00,0x0E
|
|||
|
|
|
|||
|
|
; compare VF05 to VF06
|
|||
|
|
MAX.xyz VF01,VF05,VF06 NOP
|
|||
|
|
SUB.xyz VF00,VF05,VF06 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
SUB.xyz VF00,VF01,VF06 NOP
|
|||
|
|
|
|||
|
|
; Z
|
|||
|
|
NOP FMAND VI01,VI07
|
|||
|
|
|
|||
|
|
; ~Z
|
|||
|
|
NOP ISUB VI01,VI07,VI01
|
|||
|
|
|
|||
|
|
; ~Z & -(~Z)
|
|||
|
|
NOP ISUB VI08,VI00,VI01
|
|||
|
|
NOP IAND VI01,VI01,VI08
|
|||
|
|
|
|||
|
|
; (~Z & -(~Z)) & S
|
|||
|
|
NOP FMAND VI01,VI01
|
|||
|
|
NOP IBNE VI01,VI00,NoSwap0
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
ADDx.xyz VF05,VF06,VF00x MOVE.xyz VF06,VF05
|
|||
|
|
ADDx VF26,VF27,VF00x MOVE VF27,VF26
|
|||
|
|
NOP IADDIU VI10,VI10,1
|
|||
|
|
NoSwap0:
|
|||
|
|
|
|||
|
|
; compare VF05 to VF07
|
|||
|
|
MAX.xyz VF02,VF05,VF07 NOP
|
|||
|
|
SUB.xyz VF00,VF05,VF07 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
SUB.xyz VF00,VF02,VF07 NOP
|
|||
|
|
|
|||
|
|
; Z
|
|||
|
|
NOP FMAND VI01,VI07
|
|||
|
|
|
|||
|
|
; ~Z
|
|||
|
|
NOP ISUB VI01,VI07,VI01
|
|||
|
|
|
|||
|
|
; ~Z & -(~Z)
|
|||
|
|
NOP ISUB VI08,VI00,VI01
|
|||
|
|
NOP IAND VI01,VI01,VI08
|
|||
|
|
|
|||
|
|
; (~Z & -(~Z)) & S
|
|||
|
|
NOP FMAND VI01,VI01
|
|||
|
|
NOP IBNE VI01,VI00,NoSwap1
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
ADDx.xyz VF05,VF07,VF00x MOVE.xyz VF07,VF05
|
|||
|
|
ADDx VF26,VF28,VF00x MOVE VF28,VF26
|
|||
|
|
NOP IADDIU VI10,VI10,2
|
|||
|
|
NoSwap1:
|
|||
|
|
|
|||
|
|
; compare VF06 to VF07
|
|||
|
|
MAX.xyz VF03,VF06,VF07 NOP
|
|||
|
|
SUB.xyz VF00,VF06,VF07 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
SUB.xyz VF00,VF03,VF07 NOP
|
|||
|
|
|
|||
|
|
; Z
|
|||
|
|
NOP FMAND VI01,VI07
|
|||
|
|
|
|||
|
|
; ~Z
|
|||
|
|
NOP ISUB VI01,VI07,VI01
|
|||
|
|
|
|||
|
|
; ~Z & -(~Z)
|
|||
|
|
NOP ISUB VI08,VI00,VI01
|
|||
|
|
NOP IAND VI01,VI01,VI08
|
|||
|
|
|
|||
|
|
; (~Z & -(~Z)) & S
|
|||
|
|
NOP FMAND VI01,VI01
|
|||
|
|
NOP IBNE VI01,VI00,NoSwap2
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
ADDx.xyz VF06,VF07,VF00x MOVE.xyz VF07,VF06
|
|||
|
|
ADDx VF27,VF28,VF00x MOVE VF28,VF27
|
|||
|
|
NOP IADDIU VI10,VI10,4
|
|||
|
|
NoSwap2:
|
|||
|
|
|
|||
|
|
; save the swap flags
|
|||
|
|
NOP MFIR.x VF30,VI10
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
MAX.xyz VF01,VF05,VF06 IADDIU VI09,VI00,0x0E ; set up mask 0x0E
|
|||
|
|
SUB.xyz VF00,VF05,VF06 NOP
|
|||
|
|
MAX.xyz VF02,VF05,VF07 NOP
|
|||
|
|
MAX.xyz VF03,VF06,VF07 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
SUB.xyz VF00,VF01,VF06 FMAND VI01,VI09 ; Z
|
|||
|
|
SUB.xyz VF00,VF05,VF07 ISUB VI07,VI09,VI01 ; ~Z
|
|||
|
|
NOP ISUB VI01,VI00,VI07
|
|||
|
|
NOP IAND VI07,VI07,VI01 ; ~Z & -(~Z)
|
|||
|
|
NOP FMAND VI07,VI07 ; (~Z & -(~Z)) & S
|
|||
|
|
SUB.xyz VF00,VF02,VF07 FMAND VI01,VI09 ; Z
|
|||
|
|
SUB.xyz VF00,VF06,VF07 ISUB VI08,VI09,VI01 ; ~Z
|
|||
|
|
NOP ISUB VI01,VI00,VI08
|
|||
|
|
NOP IAND VI08,VI08,VI01 ; ~Z & -(~Z)
|
|||
|
|
NOP FMAND VI08,VI08 ; (~Z & -(~Z)) & S
|
|||
|
|
SUB.xyz VF00,VF03,VF07 FMAND VI01,VI09 ; Z
|
|||
|
|
NOP ISUB VI09,VI09,VI01 ; ~Z
|
|||
|
|
NOP ISUB VI01,VI00,VI09
|
|||
|
|
NOP IAND VI09,VI09,VI01 ; ~Z & -(~Z)
|
|||
|
|
NOP FMAND VI09,VI09 ; (~Z & -(~Z)) & S
|
|||
|
|
|
|||
|
|
ADDx.xyz VF01,VF05,VF00x IBEQ VI07,VI00,NoSwap0
|
|||
|
|
NOP IADDIU VI01,VI00,0
|
|||
|
|
|
|||
|
|
ADDx.xyz VF05,VF06,VF00x ISUB VI08,VI08,VI09 ; swap VF05 with VF06
|
|||
|
|
ADDx VF26,VF27,VF00x MOVE VF27,VF26
|
|||
|
|
NOP IADD VI09,VI08,VI09 ; and swap flags VI08 with VI09
|
|||
|
|
ADDx.xyz VF06,VF01,VF00x ISUB VI08,VI09,VI08
|
|||
|
|
NOP IADDIU VI01,VI01,1 ; set swap flag 0
|
|||
|
|
NoSwap0:
|
|||
|
|
NOP IBEQ VI08,VI00,NoSwap1
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
ADDx.xyz VF05,VF07,VF00x MOVE.xyz VF07,VF05 ; swap VF05 with VF07
|
|||
|
|
ADDx VF26,VF28,VF00x MOVE VF28,VF26
|
|||
|
|
NOP IADDIU VI01,VI01,2 ; set swap flag 1
|
|||
|
|
NoSwap1:
|
|||
|
|
NOP IBEQ VI09,VI00,NoSwap2
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
ADDx.xyz VF06,VF07,VF00x MOVE.xyz VF07,VF06 ; swap VF06 with VF07
|
|||
|
|
ADDx VF27,VF28,VF00x MOVE VF28,VF27
|
|||
|
|
NOP IADDIU VI01,VI01,4 ; set swap flag 2
|
|||
|
|
NoSwap2:
|
|||
|
|
NOP MFIR.x VF30,VI01 ; save the swap flags
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
;------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
;--------------------------
|
|||
|
|
; apply full view transform
|
|||
|
|
;--------------------------
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF05x NOP
|
|||
|
|
MADDAy ACC,VF13,VF05y NOP
|
|||
|
|
MADDz VF05,VF14,VF05z NOP
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF06x NOP
|
|||
|
|
MADDAy ACC,VF13,VF06y NOP
|
|||
|
|
MADDz VF06,VF14,VF06z NOP
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF07x NOP
|
|||
|
|
MADDAy ACC,VF13,VF07y NOP
|
|||
|
|
MADDz VF07,VF14,VF07z NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;---------------------------
|
|||
|
|
; classify triangle vertices
|
|||
|
|
;---------------------------
|
|||
|
|
|
|||
|
|
ADDx VF01,VF26,VF00x BAL VI14,ClassifyTriangleVertex
|
|||
|
|
SUB.xyz VF02,VF00,VF26 MR32.z VF26,VF26
|
|||
|
|
NOP MFIR.w VF26,VI01
|
|||
|
|
|
|||
|
|
ADDx VF01,VF27,VF00x BAL VI14,ClassifyTriangleVertex
|
|||
|
|
SUB.xyz VF02,VF00,VF27 MR32.z VF27,VF27
|
|||
|
|
NOP MFIR.w VF27,VI01
|
|||
|
|
|
|||
|
|
ADDx VF01,VF28,VF00x BAL VI14,ClassifyTriangleVertex
|
|||
|
|
SUB.xyz VF02,VF00,VF28 MR32.z VF28,VF28
|
|||
|
|
NOP MFIR.w VF28,VI01
|
|||
|
|
|
|||
|
|
|
|||
|
|
;--------------------------
|
|||
|
|
; classify frustum vertices
|
|||
|
|
;--------------------------
|
|||
|
|
|
|||
|
|
; in frustum coords, the 8 vertices of the frustum are
|
|||
|
|
; FTL ( f, f, f,-f) -> (-1,-1,-1) 0x8000
|
|||
|
|
; FTR (-f, f, f,-f) -> ( 1,-1,-1) 0x4000
|
|||
|
|
; FBL ( f,-f, f,-f) -> (-1, 1,-1) 0x2000
|
|||
|
|
; FBR (-f,-f, f,-f) -> ( 1, 1,-1) 0x1000
|
|||
|
|
; NTL ( n, n,-n,-n) -> (-1,-1, 1) 0x0800
|
|||
|
|
; NTR (-n, n,-n,-n) -> ( 1,-1, 1) 0x0400
|
|||
|
|
; NBL ( n,-n,-n,-n) -> (-1, 1, 1) 0x0200
|
|||
|
|
; NBR (-n,-n,-n,-n) -> ( 1, 1, 1) 0x0100
|
|||
|
|
|
|||
|
|
; for point classification we can work entirely in frustum coords,
|
|||
|
|
; using just the x,y and w of each point (which form a right-handed set)
|
|||
|
|
|
|||
|
|
; calculate normal to plane of triangle (in frustum xyw-space)
|
|||
|
|
SUB.xyz VF01,VF27,VF26 NOP
|
|||
|
|
SUB.xyz VF02,VF28,VF26 NOP
|
|||
|
|
|
|||
|
|
;ADDw.xyz VF04,VF00,VF00w NOP ; set VF04 = (1,1,1,1)...
|
|||
|
|
;NOP MOVE.w VF04,VF00
|
|||
|
|
MAXw VF04,VF00,VF00w NOP
|
|||
|
|
|
|||
|
|
NOP NOP
|
|||
|
|
OPMULA.xyz ACC,VF02,VF01 NOP
|
|||
|
|
OPMSUB.xyz VF01,VF01,VF02 NOP
|
|||
|
|
|
|||
|
|
SUBA ACC,VF00,VF00 NOP
|
|||
|
|
|
|||
|
|
; set VF03 = (nx*x0, ny*y0, nz*w0, ?)
|
|||
|
|
MUL.xyz VF03,VF01,VF26 NOP
|
|||
|
|
|
|||
|
|
; set VF01 = (nx+ny-nz, -nx+ny-nz, nx-ny-nz, -nx-ny-nz)
|
|||
|
|
MADDAx.xz ACC,VF04,VF01x NOP
|
|||
|
|
MSUBAx.yw ACC,VF04,VF01x NOP
|
|||
|
|
MADDAy.xy ACC,VF04,VF01y NOP
|
|||
|
|
MSUBAy.zw ACC,VF04,VF01y NOP
|
|||
|
|
MSUBz VF01,VF04,VF01z NOP
|
|||
|
|
|
|||
|
|
; set ACC = (n.x0, n.x0, n.x0, n.x0)
|
|||
|
|
MULAx ACC,VF04,VF03x NOP
|
|||
|
|
MADDAy ACC,VF04,VF03y NOP
|
|||
|
|
MADDAz ACC,VF04,VF03z NOP
|
|||
|
|
|
|||
|
|
; calculate (n.x0) - far * VF01
|
|||
|
|
MSUBy VF00,VF01,VF09y NOP
|
|||
|
|
|
|||
|
|
; calculate (n.x0) - near * VF01
|
|||
|
|
MSUBx VF00,VF01,VF09x NOP
|
|||
|
|
|
|||
|
|
; classify 8 vertices of frustum wrt plane of triangle
|
|||
|
|
ADDx.x VF01,VF00,VF28x IADDIU VI08,VI00,0x0F10
|
|||
|
|
ADDx.y VF01,VF00,VF26x IADDIU VI01,VI00,0x00F0 ; Sxyzw MAC flags
|
|||
|
|
ADDx.z VF01,VF00,VF27x FMAND VI10,VI01
|
|||
|
|
ADDz.x VF03,VF00,VF28z FMAND VI01,VI01
|
|||
|
|
ADDz.y VF03,VF00,VF26z IADD VI10,VI10,VI10
|
|||
|
|
ADDz.z VF03,VF00,VF27z IADD VI10,VI10,VI10
|
|||
|
|
ADDy.x VF02,VF00,VF28y IADD VI10,VI10,VI10
|
|||
|
|
ADDy.y VF02,VF00,VF26y IADD VI10,VI10,VI10
|
|||
|
|
ADDy.z VF02,VF00,VF27y IOR VI10,VI10,VI01
|
|||
|
|
|
|||
|
|
|
|||
|
|
; frustum outcodes now in VI10
|
|||
|
|
|
|||
|
|
|
|||
|
|
;------------------------------------
|
|||
|
|
; trivial rejection of triangle plane
|
|||
|
|
;------------------------------------
|
|||
|
|
|
|||
|
|
SUB.w VF01,VF00,VF00 IADDIU VI01,VI00,0x0FF0
|
|||
|
|
SUB.xyz VF20,VF03,VF01 IBEQ VI10,VI00,ClipNext ; reject if whole frustum is on '0' side of trianlge plane
|
|||
|
|
ADD.xyz VF21,VF03,VF01 IADDIU VI06,VI00,0 ; zero output vertex count
|
|||
|
|
SUB.xyz VF22,VF03,VF02 IBEQ VI10,VI01,ClipNext ; reject if whole frustum is on '1' side of triangle plane
|
|||
|
|
ADD.xyz VF23,VF03,VF02 IADD VI10,VI10,VI10 ; shift another 4 bits left
|
|||
|
|
ADDx.xyz VF24,VF03,VF09x IADD VI10,VI10,VI10
|
|||
|
|
SUBAy.xyz ACC,VF00,VF09y IADD VI10,VI10,VI10
|
|||
|
|
MSUBw.xyz VF25,VF03,VF00w IADD VI10,VI10,VI10
|
|||
|
|
|
|||
|
|
;-------------------------------------------
|
|||
|
|
; initialise frustum in standard orientation
|
|||
|
|
;-------------------------------------------
|
|||
|
|
|
|||
|
|
; VecSet(p[0], w0-x0, w1-x1, w2-x2, 0), m[0] = 0x5501; ; right
|
|||
|
|
; VecSet(p[1], w0+x0, w1+x1, w2+x2, 0), m[1] = 0xAA02; ; left
|
|||
|
|
; VecSet(p[2], w0-y0, w1-y1, w2-y2, 0), m[2] = 0x3304; ; bottom
|
|||
|
|
; VecSet(p[3], w0+y0, w1+y1, w2+y2, 0), m[3] = 0xCC08; ; top
|
|||
|
|
; VecSet(p[4], w0+n , w1+n , w2+n , 0), m[4] = 0x0F10; ; near
|
|||
|
|
; VecSet(p[5], -w0-f , -w1-f , -w2-f , 0), m[5] = 0xF020; ; far
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP LOI 0x3F805501
|
|||
|
|
ADDi.w VF20,VF01,I LOI 0x3F80AA02
|
|||
|
|
ADDi.w VF21,VF01,I LOI 0x3F803304
|
|||
|
|
ADDi.w VF22,VF01,I LOI 0x3F80CC08
|
|||
|
|
ADDi.w VF23,VF01,I LOI 0x3F800F10
|
|||
|
|
ADDi.w VF24,VF01,I LOI 0x3F80F020
|
|||
|
|
ADDi.w VF25,VF01,I ISUBIU VI11,VI00,0x0100 ; 0xFF00
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;------------------------------------------
|
|||
|
|
; put a straddling edge in the primary face
|
|||
|
|
;------------------------------------------
|
|||
|
|
|
|||
|
|
; while (((c & m[j4])==0) || ((c & m[j4])==(0xFF00 & m[j4])))
|
|||
|
|
; {
|
|||
|
|
; jt=j2, j2=j5, j5=j3, j3=j4, j4=jt;
|
|||
|
|
; }
|
|||
|
|
|
|||
|
|
WhileA: NOP IAND VI07,VI10,VI08
|
|||
|
|
NOP IAND VI01,VI11,VI08
|
|||
|
|
NOP IBEQ VI07,VI00,RotateA
|
|||
|
|
ADDx VF01,VF22,VF00x NOP
|
|||
|
|
NOP IBNE VI01,VI07,EndWhileA
|
|||
|
|
NOP NOP
|
|||
|
|
RotateA:ADDx VF22,VF25,VF00x MTIR VI08,VF22w
|
|||
|
|
ADDx VF25,VF23,VF00x B WhileA
|
|||
|
|
ADDx VF23,VF24,VF00x MOVE VF24,VF01
|
|||
|
|
EndWhileA:
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-------------------------------------------
|
|||
|
|
; rotate straddling edge into secondary face
|
|||
|
|
;-------------------------------------------
|
|||
|
|
|
|||
|
|
; while ((c & m[j3] & m[j4]) != (m[j1] & m[j3] & m[j4]))
|
|||
|
|
; {
|
|||
|
|
; jt=j2, j2=j0, j0=j3, j3=j1, j1=jt;
|
|||
|
|
; }
|
|||
|
|
|
|||
|
|
NOP MTIR VI07,VF23w ; m[j3]
|
|||
|
|
NOP IAND VI07,VI07,VI08 ; m[j3] & m[j4]
|
|||
|
|
NOP MTIR VI11,VF21w ; m[j1]
|
|||
|
|
|
|||
|
|
WhileB: NOP IAND VI01,VI11,VI07 ; m[j1] & m[j3] & m[j4]
|
|||
|
|
NOP IAND VI07,VI07,VI10 ; c & m[j3] & m[j4]
|
|||
|
|
ADDx VF01,VF22,VF00x NOP
|
|||
|
|
NOP IBEQ VI07,VI01,EndWhileB
|
|||
|
|
NOP IAND VI07,VI11,VI08
|
|||
|
|
ADDx VF22,VF20,VF00x MTIR VI11,VF22w
|
|||
|
|
ADDx VF20,VF23,VF00x B WhileB
|
|||
|
|
ADDx VF23,VF21,VF00x MOVE VF21,VF01
|
|||
|
|
EndWhileB:
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;------------------------------------------------
|
|||
|
|
; roll the frustum classifier bits into the masks
|
|||
|
|
;------------------------------------------------
|
|||
|
|
|
|||
|
|
NOP IADDIU VI10,VI10,0xFF
|
|||
|
|
NOP LOI 0x4B400000 ; 2^23+2^22
|
|||
|
|
|
|||
|
|
NOP MTIR VI01,VF20w
|
|||
|
|
NOP IAND VI01,VI01,VI10
|
|||
|
|
NOP MFIR.w VF20,VI01
|
|||
|
|
NOP MTIR VI01,VF21w
|
|||
|
|
NOP IAND VI01,VI01,VI10
|
|||
|
|
NOP MFIR.w VF21,VI01
|
|||
|
|
ITOF0.w VF20,VF20 MTIR VI01,VF22w
|
|||
|
|
NOP IAND VI01,VI01,VI10
|
|||
|
|
NOP MFIR.w VF22,VI01
|
|||
|
|
ITOF0.w VF21,VF21 MTIR VI01,VF23w
|
|||
|
|
ADDi.w VF20,VF20,I IAND VI01,VI01,VI10
|
|||
|
|
NOP MFIR.w VF23,VI01
|
|||
|
|
ITOF0.w VF22,VF22 MTIR VI01,VF24w
|
|||
|
|
ADDi.w VF21,VF21,I IAND VI01,VI01,VI10
|
|||
|
|
NOP MFIR.w VF24,VI01
|
|||
|
|
ITOF0.w VF23,VF23 MTIR VI01,VF25w
|
|||
|
|
ADDi.w VF22,VF22,I IAND VI01,VI01,VI10
|
|||
|
|
NOP MFIR.w VF25,VI01
|
|||
|
|
ITOF0.w VF24,VF24 NOP
|
|||
|
|
ADDi.w VF23,VF23,I NOP
|
|||
|
|
ITOF0.w VF25,VF25 NOP
|
|||
|
|
ADDi.w VF24,VF24,I NOP
|
|||
|
|
ADDi.w VF25,VF25,I NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;----------------------------------------------
|
|||
|
|
; classify initial straddling edge wrt triangle
|
|||
|
|
;----------------------------------------------
|
|||
|
|
|
|||
|
|
OPMULA.xyz ACC,VF23,VF24 NOP
|
|||
|
|
OPMSUB.xyz VF31,VF24,VF23 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IADDIU VI01,VI00,0x00E0 ; Sxyz MAC flags
|
|||
|
|
NOP FMAND VI01,VI01
|
|||
|
|
NOP MFIR.w VF31,VI01
|
|||
|
|
|
|||
|
|
; advance one face to fill the classification queue
|
|||
|
|
NOP BAL VI14,NextFrustumFace
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
; ; GENERAL ALGORITHM
|
|||
|
|
;
|
|||
|
|
; ; mark our place in the triangle
|
|||
|
|
; vT0 = vT;
|
|||
|
|
;
|
|||
|
|
; ; are we starting at a triangle vertex inside the frustum?
|
|||
|
|
; if (vT inside F)
|
|||
|
|
; goto vTinsideF;
|
|||
|
|
;
|
|||
|
|
; ; find the first edge of the frustum poly with respect to which which the triangle vertex is out
|
|||
|
|
; while (vT outside edge(vF,vF->next))
|
|||
|
|
; vF = vF->next;
|
|||
|
|
; while (vT inside edge(vF,vF->next))
|
|||
|
|
; vF = vF->next;
|
|||
|
|
;
|
|||
|
|
; ; mark our place in the frustum poly
|
|||
|
|
; vF0 = vF;
|
|||
|
|
;
|
|||
|
|
; ; find an intersection, or determine there isn't one and quit
|
|||
|
|
; while (1)
|
|||
|
|
; {
|
|||
|
|
; while (vT->next outside edge(vF,vF->next))
|
|||
|
|
; vT = vT->next;
|
|||
|
|
;
|
|||
|
|
; do
|
|||
|
|
; {
|
|||
|
|
; if ( vF inside edge(vT,vT->next) &&
|
|||
|
|
; vF->next outside edge(vT,vT->next) &&
|
|||
|
|
; vT outside edge(vF,vF->next))
|
|||
|
|
; goto Intersection;
|
|||
|
|
; vF = vF->next;
|
|||
|
|
; if (vF == vF0)
|
|||
|
|
; goto Reject;
|
|||
|
|
; }
|
|||
|
|
; while (vT->next inside edge(vF,vF->next));
|
|||
|
|
; }
|
|||
|
|
;
|
|||
|
|
; Intersection:
|
|||
|
|
;
|
|||
|
|
; while (1)
|
|||
|
|
; {
|
|||
|
|
;
|
|||
|
|
; Output(Intersection(edge(vF,vF->next), edge(vT,vT->next));
|
|||
|
|
;
|
|||
|
|
; while (vT->next inside F)
|
|||
|
|
; {
|
|||
|
|
; vT = vT->next;
|
|||
|
|
; if (vT==vT0)
|
|||
|
|
; goto Finish;
|
|||
|
|
; vTinsideF:
|
|||
|
|
; Output(vT);
|
|||
|
|
; }
|
|||
|
|
;
|
|||
|
|
; do {
|
|||
|
|
; vF = vF->next;
|
|||
|
|
; } while ((vF inside edge(vT,vT->next)) || (vF->next outside edge(vT,vT->next)));
|
|||
|
|
;
|
|||
|
|
; Output(Intersection(edge(vT,vT->next), edge(vF,vF->next));
|
|||
|
|
;
|
|||
|
|
; while (vF->next inside T)
|
|||
|
|
; {
|
|||
|
|
; vF = vF->next;
|
|||
|
|
; Output(vF);
|
|||
|
|
; }
|
|||
|
|
;
|
|||
|
|
; do {
|
|||
|
|
; vT = vT->next;
|
|||
|
|
; if (vT==vT0)
|
|||
|
|
; goto Finish;
|
|||
|
|
; } while ((vT inside edge(vF,vF->next)) || (vT->next outside edge(vF,vF->next)));
|
|||
|
|
;
|
|||
|
|
; }
|
|||
|
|
;
|
|||
|
|
; Finish:
|
|||
|
|
|
|||
|
|
; are we starting at an in-vertex?
|
|||
|
|
NOP MTIR VI07,VF26w
|
|||
|
|
NOP IADDIU VI10,VI00,0x80 ; mark our place in the triangle
|
|||
|
|
NOP IBEQ VI07,VI00,StartIn
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; find the first edge of the frustum poly with respect to which which the triangle vertex is out
|
|||
|
|
FindEdge1:
|
|||
|
|
NOP MTIR VI01,VF23w
|
|||
|
|
NOP IAND VI01,VI01,VI07
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,NextFrustumFace
|
|||
|
|
NOP IADDIU VI14,VI00,FindEdge1
|
|||
|
|
|
|||
|
|
FindEdge2:
|
|||
|
|
NOP MTIR VI01,VF23w
|
|||
|
|
NOP IAND VI01,VI01,VI07
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBEQ VI01,VI00,NextFrustumFace
|
|||
|
|
NOP IADDIU VI14,VI00,FindEdge2
|
|||
|
|
|
|||
|
|
; mark our place in the frustum poly
|
|||
|
|
NOP MTIR VI11,VF23w
|
|||
|
|
NOP MTIR VI07,VF23w
|
|||
|
|
|
|||
|
|
; find an intersection, or determine there isn't one and quit
|
|||
|
|
FindIntersection:
|
|||
|
|
NOP MTIR VI08,VF27w
|
|||
|
|
NOP IAND VI01,VI08,VI07
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,NextTriangleVertex
|
|||
|
|
NOP IADDIU VI14,VI00,FindIntersection
|
|||
|
|
|
|||
|
|
While3:
|
|||
|
|
NOP MTIR VI01,VF26w
|
|||
|
|
NOP IAND VI01,VI01,VI07
|
|||
|
|
NOP MTIR VI07,VF31w
|
|||
|
|
NOP IBEQ VI01,VI00,NoIntersectionYet
|
|||
|
|
NOP MTIR VI01,VF30w
|
|||
|
|
|
|||
|
|
NOP IAND VI01,VI01,VI10
|
|||
|
|
NOP IAND VI07,VI07,VI10
|
|||
|
|
NOP ISUB VI01,VI01,VI07
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBLTZ VI01,While4
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NoIntersectionYet:
|
|||
|
|
|
|||
|
|
NOP BAL VI14,NextFrustumFace
|
|||
|
|
NOP NOP
|
|||
|
|
NOP MTIR VI07,VF23w
|
|||
|
|
NOP IAND VI01,VI08,VI07
|
|||
|
|
NOP IBEQ VI07,VI11,ClipNext ; reject
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP IBNE VI01,VI00,FindIntersection
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B While3
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
While4: ; output entering intersection
|
|||
|
|
NOP BAL VI14,OutputType2
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; output any vertices of triangle inside frustum
|
|||
|
|
OutputTriVerts:
|
|||
|
|
NOP MTIR VI01,VF27w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,EndOutputTriVerts
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP BAL VI14,NextTriangleVertex
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
StartIn:NOP B OutputType1
|
|||
|
|
NOP IADDIU VI14,VI00,OutputTriVerts
|
|||
|
|
EndOutputTriVerts:
|
|||
|
|
|
|||
|
|
; traverse frustum poly to find leaving intersection
|
|||
|
|
|
|||
|
|
NOP MTIR VI01,VF31w
|
|||
|
|
|
|||
|
|
FindLeavingIntersection:
|
|||
|
|
NOP BAL VI14,NextFrustumFace
|
|||
|
|
NOP IAND VI07,VI01,VI10
|
|||
|
|
NOP IAND VI01,VI01,VI10
|
|||
|
|
NOP ISUB VI09,VI07,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBLEZ VI09,FindLeavingIntersection
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; output leaving intersection
|
|||
|
|
NOP BAL VI14,OutputType2
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP MTIR VI01,VF31w
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; output any vertices of frustum poly inside triangle
|
|||
|
|
OutputFrustumVerts:
|
|||
|
|
|
|||
|
|
NOP IBNE VI01,VI00,EndOutputFrustumVerts
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP BAL VI14,OutputType3
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B NextFrustumFace
|
|||
|
|
NOP IADDIU VI14,VI00,OutputFrustumVerts
|
|||
|
|
EndOutputFrustumVerts:
|
|||
|
|
|
|||
|
|
; traverse triangle to find entering intersection
|
|||
|
|
NOP MTIR VI09,VF23w
|
|||
|
|
NOP MTIR VI07,VF27w
|
|||
|
|
NOP IAND VI07,VI07,VI09
|
|||
|
|
|
|||
|
|
FindEnteringIntersection:
|
|||
|
|
NOP IADDIU VI01,VI07,0
|
|||
|
|
NOP MTIR VI07,VF28w
|
|||
|
|
NOP IAND VI07,VI07,VI09
|
|||
|
|
NOP BAL VI14,NextTriangleVertex
|
|||
|
|
NOP ISUB VI01,VI01,VI07
|
|||
|
|
|
|||
|
|
NOP IBLEZ VI01,FindEnteringIntersection
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NOP B While4
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;------------------------------------
|
|||
|
|
; classify triangle vertex subroutine
|
|||
|
|
;------------------------------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
; classify a triangle vertex with respect to the 6 planes of the frustum
|
|||
|
|
; this info could possibly be retained from pass 1
|
|||
|
|
|
|||
|
|
ClassifyTriangleVertex:
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,0x0010 ; Sw MAC flag
|
|||
|
|
CLIPw.xyz VF01,VF01w FMAND VI01,VI01
|
|||
|
|
CLIPw.xyz VF02,VF01w NOP
|
|||
|
|
NOP IADDIU VI07,VI00,0x003F
|
|||
|
|
NOP IBEQ VI01,VI00,wPos
|
|||
|
|
NOP FCGET VI01
|
|||
|
|
NOP FCGET VI01
|
|||
|
|
NOP ISUB VI01,VI07,VI01
|
|||
|
|
wPos: NOP JR VI14
|
|||
|
|
NOP IAND VI01,VI01,VI07
|
|||
|
|
|
|||
|
|
|
|||
|
|
;--------------------------------
|
|||
|
|
; next triangle vertex subroutine
|
|||
|
|
;--------------------------------
|
|||
|
|
|
|||
|
|
;NextTriangleVertex()
|
|||
|
|
;{
|
|||
|
|
; it=i0, i0=i1, i1=i2, i2=it;
|
|||
|
|
;}
|
|||
|
|
|
|||
|
|
NextTriangleVertex:
|
|||
|
|
|
|||
|
|
NOP ISUBIU VI10,VI10,0x30
|
|||
|
|
NOP MOVE VF01,VF26
|
|||
|
|
NOP IBLTZ VI10,ProcessFan
|
|||
|
|
NOP MOVE VF26,VF27
|
|||
|
|
NOP MOVE VF27,VF28
|
|||
|
|
NOP JR VI14
|
|||
|
|
NOP MOVE VF28,VF01
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------
|
|||
|
|
; next frustum face subroutine
|
|||
|
|
;-----------------------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
; 1---------0
|
|||
|
|
; |\ 3 /|
|
|||
|
|
; | *-----* |
|
|||
|
|
; | | (5) | |
|
|||
|
|
; |1| 4 |0|
|
|||
|
|
; | | | |
|
|||
|
|
; | *-----* |
|
|||
|
|
; |/ 2 \|
|
|||
|
|
; *---------*
|
|||
|
|
;
|
|||
|
|
;NextFrustumFace()
|
|||
|
|
;{
|
|||
|
|
; ; advance edge classification queue
|
|||
|
|
; e0 = e1;
|
|||
|
|
;
|
|||
|
|
; ; rotate frustum in 1 of 3 ways
|
|||
|
|
; jt=j3, j3=j4;
|
|||
|
|
; if (m[j4] & m[j0])
|
|||
|
|
; j4=j0, j0=jt, jt=j1, j1=j2;
|
|||
|
|
; else if (m[j4] & m[j2])
|
|||
|
|
; j4=j2;
|
|||
|
|
; else
|
|||
|
|
; j4=j1, j1=jt, jt=j0, j0=j2;
|
|||
|
|
; j2=j5, j5=jt;
|
|||
|
|
;
|
|||
|
|
; ; classify new straddling edge wrt triangle
|
|||
|
|
; CrossProduct(e1, p[j2], p[j4]);
|
|||
|
|
;}
|
|||
|
|
|
|||
|
|
|
|||
|
|
NextFrustumFace:
|
|||
|
|
|
|||
|
|
ADDx VF01,VF23,VF00x MTIR VI09,VF24w
|
|||
|
|
ADDx VF23,VF24,VF00x MTIR VI01,VF20w
|
|||
|
|
NOP IAND VI01,VI09,VI01
|
|||
|
|
NOP MOVE.w VF30,VF31
|
|||
|
|
NOP IBEQ VI01,VI00,NFF1
|
|||
|
|
NOP MTIR VI01,VF22w
|
|||
|
|
|
|||
|
|
OPMULA.xyz ACC,VF23,VF20 MOVE VF24,VF20
|
|||
|
|
OPMSUB.xyz VF31,VF20,VF23 MOVE VF20,VF01
|
|||
|
|
ADDx VF01,VF21,VF00x B NFF3
|
|||
|
|
ADDx VF21,VF22,VF00x IADDIU VI01,VI00,0x00E0 ; Sxyz MAC flags
|
|||
|
|
|
|||
|
|
NFF1: NOP IAND VI01,VI09,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,NFF2
|
|||
|
|
NOP IADDIU VI01,VI00,0x00E0 ; Sxyz MAC flags
|
|||
|
|
|
|||
|
|
OPMULA.xyz ACC,VF23,VF21 MOVE VF24,VF21
|
|||
|
|
OPMSUB.xyz VF31,VF21,VF23 MOVE VF21,VF01
|
|||
|
|
ADDx VF01,VF20,VF00x B NFF3
|
|||
|
|
ADDx VF20,VF22,VF00x NOP
|
|||
|
|
|
|||
|
|
NFF2: OPMULA.xyz ACC,VF23,VF22 MOVE VF24,VF22
|
|||
|
|
OPMSUB.xyz VF31,VF22,VF23 NOP
|
|||
|
|
|
|||
|
|
NFF3: ADDx VF00,VF31,VF00x FMAND VI01,VI01
|
|||
|
|
ADDx VF22,VF25,VF00x JR VI14
|
|||
|
|
ADDx VF25,VF01,VF00x MFIR.w VF31,VI01
|
|||
|
|
|
|||
|
|
|
|||
|
|
;--------------------------
|
|||
|
|
; vertex output subroutines
|
|||
|
|
;--------------------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
OutputWeightsFromAcc:
|
|||
|
|
|
|||
|
|
MADDx VF01,VF00,VF00x NOP
|
|||
|
|
|
|||
|
|
OutputWeights:
|
|||
|
|
|
|||
|
|
NOP IADDIU VI06,VI06,1
|
|||
|
|
NOP IADDIU VI03,VI03,3
|
|||
|
|
NOP JR VI14
|
|||
|
|
NOP SQ VF01,-2(VI03)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
OutputType1:
|
|||
|
|
|
|||
|
|
NOP ISUBIU VI01,VI10,0x50
|
|||
|
|
NOP NOP
|
|||
|
|
ADDw.y VF01,VF00,VF00w IBEQ VI01,VI00,OutputWeights
|
|||
|
|
ADDx.xzw VF01,VF00,VF00x NOP ; case i0=1 : VF01 = (0,1,0,1)
|
|||
|
|
ADDw.z VF01,VF00,VF00w IBLTZ VI01,OutputWeights
|
|||
|
|
ADDx.xyw VF01,VF00,VF00x NOP ; case i0=2 : VF01 = (0,0,1,1)
|
|||
|
|
ADDw.x VF01,VF00,VF00w B OutputWeights
|
|||
|
|
ADDx.yzw VF01,VF00,VF00x NOP ; case i0=0 : VF01 = (1,0,0,1)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;OutputIntersectionType2(Vec x[3])
|
|||
|
|
;{
|
|||
|
|
; ; x = ((a0.p)x1-(a1.p)x0)/(x0-x1).p
|
|||
|
|
; Vec Result;
|
|||
|
|
; VecWeightedMean2(Result, -p[j4][i1], x[i0], p[j4][i0], x[i1]);
|
|||
|
|
; Output(Result,&pClippedPoly);
|
|||
|
|
;}
|
|||
|
|
|
|||
|
|
OutputType2:
|
|||
|
|
|
|||
|
|
ADDw.xyz VF01,VF00,VF00w ISUBIU VI01,VI10,0x50 ; VF01 = (1,1,1,?)
|
|||
|
|
NOP MOVE.w VF01,VF00 ; VF01 = (1,1,1,1)
|
|||
|
|
SUBA ACC,VF00,VF00 IBEQ VI01,VI00,Type2B ; ACC = (0,0,0,0)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBLTZ VI01,Type2C
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
Type2A: MADDAy.yw ACC,VF01,VF23y B OutputWeightsFromAcc; ACC = (0,VF23y,0,VF23y)
|
|||
|
|
MSUBAz.xw ACC,VF01,VF23z NOP ; ACC = (-VF23z,VF23y,0,VF23y-VF23z)
|
|||
|
|
|
|||
|
|
Type2B: MADDAz.zw ACC,VF01,VF23z B OutputWeightsFromAcc; ACC = (0,0,VF23z,VF23z)
|
|||
|
|
MSUBAx.yw ACC,VF01,VF23x NOP ; ACC = (0,-VF23x,VF23z,VF23z-VF23x)
|
|||
|
|
|
|||
|
|
Type2C: MADDAx.xw ACC,VF01,VF23x B OutputWeightsFromAcc; ACC = (VF23x,0,0,VF23x)
|
|||
|
|
MSUBAy.zw ACC,VF01,VF23y NOP ; ACC = (VF23x,0,-VF23y,VF23x-VF23y)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
OutputType3:
|
|||
|
|
|
|||
|
|
MULAx.w ACC,VF00,VF31x MR32.xy VF01,VF31
|
|||
|
|
MADDAy.w ACC,VF00,VF31y NOP
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
MADDz.w VF01,VF00,VF31z B OutputWeights
|
|||
|
|
ADDx.z VF01,VF00,VF31x NOP ; VF01 = (VF31y, VF31z, VF31x, VF31x+VF31y+VF31z)
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
ProcessFan:
|
|||
|
|
|
|||
|
|
NOP IBEQ VI06,VI00,ClipNext ; if nothing was output, just forget it
|
|||
|
|
NOP ILW.y VI08,0(VI13)
|
|||
|
|
|
|||
|
|
; get colours and texcoords from the source triangle
|
|||
|
|
NOP ISUB VI01,VI02,VI04
|
|||
|
|
NOP ISUB VI10,VI01,VI04
|
|||
|
|
NOP ISUB VI11,VI10,VI04
|
|||
|
|
NOP LQ VF23,-2(VI10)
|
|||
|
|
NOP LQ VF24,-2(VI01)
|
|||
|
|
NOP LQ VF25,-2(VI02)
|
|||
|
|
NOP LQ.xyz VF20,0(VI11)
|
|||
|
|
NOP LQ.xyz VF21,0(VI10)
|
|||
|
|
NOP LQ.xyz VF22,0(VI01)
|
|||
|
|
|
|||
|
|
; convert rgba to float and test for reflection mapping
|
|||
|
|
ITOF0 VF23,VF23 ISUBIU VI10,VI08,Refl
|
|||
|
|
ITOF0 VF24,VF24 IADDIU VI01,VI00,0x0FF
|
|||
|
|
ITOF0 VF25,VF25 IAND VI01,VI10,VI01
|
|||
|
|
NOP XITOP VI11
|
|||
|
|
NOP IBEQ VI01,VI00,NoConvST
|
|||
|
|
NOP IADDIU VI01,VI00,SHDW
|
|||
|
|
|
|||
|
|
; convert st to float and supplement with 1, and check whether it's a shadow projection
|
|||
|
|
ITOF12.xy VF20,VF20 IAND VI01,VI01,VI11
|
|||
|
|
ITOF12.xy VF21,VF21 MR32.z VF20,VF00
|
|||
|
|
ITOF12.xy VF22,VF22 IBNE VI01,VI00,ClampedInUV
|
|||
|
|
ADDw.z VF21,VF00,VF00w MR32.z VF22,VF00
|
|||
|
|
|
|||
|
|
|
|||
|
|
; reduce texture coordinates...
|
|||
|
|
|
|||
|
|
; get u-clamp flag and start floating point calculation on both coords
|
|||
|
|
ADDw.xy VF01,VF00,VF00w LOI -0.33333333
|
|||
|
|
MULAi.xy ACC,VF20,I IADDIU VI01,VI00,0x1000
|
|||
|
|
MADDAi.xy ACC,VF21,I IAND VI01,VI08,VI01
|
|||
|
|
MADDAi.xy ACC,VF22,I LOI 0xCB400000 ; -2^23-2^22
|
|||
|
|
MADDAi.xy ACC,VF01,I IBNE VI01,VI00,ClampedInU
|
|||
|
|
MSUBAi.xy ACC,VF01,I IADDIU VI01,VI00,0x2000
|
|||
|
|
|
|||
|
|
; reduce texture coords in s
|
|||
|
|
MADDw.x VF20,VF20,VF00w NOP
|
|||
|
|
MADDw.x VF21,VF21,VF00w NOP
|
|||
|
|
MADDw.x VF22,VF22,VF00w NOP
|
|||
|
|
|
|||
|
|
ClampedInU:
|
|||
|
|
|
|||
|
|
; get v-clamp flag
|
|||
|
|
NOP IAND VI01,VI08,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,ClampedInV
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; reduce texture coords in t
|
|||
|
|
MADDw.y VF20,VF20,VF00w NOP
|
|||
|
|
MADDw.y VF21,VF21,VF00w NOP
|
|||
|
|
MADDw.y VF22,VF22,VF00w NOP
|
|||
|
|
|
|||
|
|
ClampedInV:
|
|||
|
|
ClampedInUV:
|
|||
|
|
NoConvST:
|
|||
|
|
|
|||
|
|
|
|||
|
|
; get giftag and replace NLOOP, NREG and PRIM fields
|
|||
|
|
NOP LQ.y VF01,0(VI13) ; VF01y = NREG:FLG:PRIM:PRE:000
|
|||
|
|
NOP LOI 0x53400000 ; 2^39+2^38
|
|||
|
|
ADDi.y VF03,VF00,I LOI 196616 ; 3*2^16+8
|
|||
|
|
ADDi.y VF04,VF00,I LOI 0x3F800412 ; XYZ2:RGBA:STQ
|
|||
|
|
ITOF12.y VF01,VF01 IADDIU VI11,VI08,0 ; VF01y = float(NREG:FLG:PRIM:PRE) ; save GIFTAGy
|
|||
|
|
SUBA.y ACC,VF03,VF01 IADDIU VI08,VI03,0 ; ACCy = 2^39+2^38-float(NREG) ; end pointer
|
|||
|
|
MSUBAw.y ACC,VF03,VF00w IADD VI01,VI06,VI06 ; ACCy = -float(NREG) ; 2 * vertex count
|
|||
|
|
MADDAw.y ACC,VF01,VF00w IADD VI01,VI01,VI06 ; ACCy = float(FLG:PRIM:PRE) ; 3 * vertex count
|
|||
|
|
MADDw.y VF01,VF04,VF00w ISUB VI03,VI03,VI01 ; VF01y = float(3:FLG:fanPRIM:PRE) ; address of giftag
|
|||
|
|
NOP MFIR.x VF01,VI06 ; EOP:NLOOP
|
|||
|
|
ADDi.z VF01,VF00,I NOP
|
|||
|
|
FTOI12.y VF01,VF01 NOP ; VF01y = 3:FLG:fanPRIM:PRE:000
|
|||
|
|
|
|||
|
|
NOP SQ.xyz VF01,0(VI03)
|
|||
|
|
|
|||
|
|
|
|||
|
|
;------------------------------------------------------------------------
|
|||
|
|
; reorder the colours and texcoords
|
|||
|
|
.if 1
|
|||
|
|
|
|||
|
|
; retrieve the swap flags
|
|||
|
|
NOP MTIR VI10,VF30x
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,1
|
|||
|
|
NOP IAND VI01,VI01,VI10
|
|||
|
|
NOP IADDIU VI07,VI00,2
|
|||
|
|
NOP IBEQ VI01,VI00,NoSwap3
|
|||
|
|
NOP IAND VI07,VI07,VI10
|
|||
|
|
|
|||
|
|
ADDx VF23,VF24,VF00x MOVE VF24,VF23
|
|||
|
|
ADDx VF20,VF21,VF00x MOVE VF21,VF20
|
|||
|
|
NoSwap3:
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,4
|
|||
|
|
NOP IBEQ VI07,VI00,NoSwap4
|
|||
|
|
NOP IAND VI01,VI01,VI10
|
|||
|
|
|
|||
|
|
ADDx VF23,VF25,VF00x MOVE VF25,VF23
|
|||
|
|
ADDx VF20,VF22,VF00x MOVE VF22,VF20
|
|||
|
|
NoSwap4:
|
|||
|
|
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBEQ VI01,VI00,NoSwap5
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
ADDx VF24,VF25,VF00x MOVE VF25,VF24
|
|||
|
|
ADDx VF21,VF22,VF00x MOVE VF22,VF21
|
|||
|
|
NoSwap5:
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
;------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
; prepare reflection-map test
|
|||
|
|
NOP ISUBIU VI11,VI10,Refl
|
|||
|
|
NOP IADDIU VI01,VI00,0x0FF
|
|||
|
|
NOP IAND VI11,VI11,VI01
|
|||
|
|
|
|||
|
|
; fog setup
|
|||
|
|
NOP DIV Q,VF00w,VF10w
|
|||
|
|
ADDq.x VF08,VF00,Q WAITQ
|
|||
|
|
|
|||
|
|
NOP LOI 0x45000FFF
|
|||
|
|
ADDi.y VF08,VF00,I NOP ; VF08y = 2^11 + 1 - 2^-12
|
|||
|
|
SUBq.y VF08,VF08,Q NOP ; VF08y = 2^11 + 1-f0 - 2^-12
|
|||
|
|
|
|||
|
|
NOP LQ.w VF01,-8(VI12)
|
|||
|
|
NOP MR32.z VF08,VF01 ; VF08 = FogNear
|
|||
|
|
|
|||
|
|
FanLoop:
|
|||
|
|
NOP LQ VF04,1(VI03)
|
|||
|
|
|
|||
|
|
MULz.w VF08,VF04,VF08z NOP
|
|||
|
|
|
|||
|
|
MULAx ACC,VF05,VF04x ERCPR P,VF04w
|
|||
|
|
MADDAy ACC,VF06,VF04y NOP
|
|||
|
|
MADDz VF03,VF07,VF04z IADDIU VI01,VI00,0x0010 ; Sw FMAC flag
|
|||
|
|
|
|||
|
|
MULAx ACC,VF23,VF04x FMAND VI01,VI01
|
|||
|
|
MADDAy ACC,VF24,VF04y NOP
|
|||
|
|
MADDz VF02,VF25,VF04z DIV Q,VF08x,VF03w
|
|||
|
|
|
|||
|
|
MULAx.xyz ACC,VF20,VF04x NOP
|
|||
|
|
MADDAy.xyz ACC,VF21,VF04y NOP
|
|||
|
|
MADDz.xyz VF01,VF22,VF04z LOI 1.0039 ; fudgefactor to compensate for RGBA rounding error
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP IBNE VI01,VI00,NonStandard
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
MINI.w VF03,VF03,VF08 NOP
|
|||
|
|
|
|||
|
|
NOP B Standard
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
NonStandard:
|
|||
|
|
|
|||
|
|
MAX.w VF03,VF03,VF08 NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
Standard:
|
|||
|
|
|
|||
|
|
MULi VF02,VF02,I NOP
|
|||
|
|
MULAy ACC,VF00,VF08y NOP
|
|||
|
|
MADDq.xyzw VF03,VF03,Q WAITQ
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; test for reflection mapping
|
|||
|
|
NOP IBNE VI11,VI00,StandardDivST
|
|||
|
|
NOP LOI 8388608
|
|||
|
|
NOP DIV Q,VF00w,VF01z
|
|||
|
|
NOP WAITQ
|
|||
|
|
|
|||
|
|
StandardDivST:
|
|||
|
|
MULq.xyz VF01,VF01,Q NOP
|
|||
|
|
FTOI4.xyz VF03,VF03 WAITP
|
|||
|
|
ADDAi.xyz ACC,VF00,I MFP.w VF04,P
|
|||
|
|
MULAi.w ACC,VF00,I IADDIU VI03,VI03,3
|
|||
|
|
MADDw VF02,VF02,VF04w SQ.xyz VF01,-2(VI03)
|
|||
|
|
NOP SQ VF03,0(VI03)
|
|||
|
|
NOP IBNE VI03,VI08,FanLoop
|
|||
|
|
NOP SQ VF02,-1(VI03)
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI03,1 ; add 1 for giftag
|
|||
|
|
|
|||
|
|
|
|||
|
|
; temporary overflow check
|
|||
|
|
NOP ISUB VI01,VI03,VI12
|
|||
|
|
NOP ISUBIU VI01,VI01,263 ; MAX_VU1_BUFFER - # saved regs - 25
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBGEZ VI01,KickFans
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
; go back for next triangle
|
|||
|
|
ClipNext:
|
|||
|
|
NOP IADD VI01,VI02,VI04
|
|||
|
|
NOP IBNE VI02,VI05,ClipLoop
|
|||
|
|
NOP ILW.w VI01,-1(VI01)
|
|||
|
|
|
|||
|
|
|
|||
|
|
KickFans:
|
|||
|
|
; add a terminal giftag
|
|||
|
|
NOP IBEQ VI03,VI12,PostClip
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IADDIU VI01,VI00,0x4000
|
|||
|
|
NOP IADDIU VI01,VI01,0x4000
|
|||
|
|
NOP ISW.x VI01,0(VI03)
|
|||
|
|
|
|||
|
|
; kick the fan buffer
|
|||
|
|
NOP XGKICK VI12
|
|||
|
|
|
|||
|
|
; are there any more source triangles?
|
|||
|
|
NOP IBEQ VI02,VI05,PostClip
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; stall VU till fan buffer is free
|
|||
|
|
NOP XGKICK VI03
|
|||
|
|
|
|||
|
|
; reset output pointer and go back for more
|
|||
|
|
NOP IADDIU VI03,VI12,0
|
|||
|
|
NOP B ClipNext
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
PostClip:
|
|||
|
|
; restore some registers
|
|||
|
|
NOP LQ VF20,-12(VI12)
|
|||
|
|
NOP LQ VF21,-11(VI12)
|
|||
|
|
NOP LQ VF22,-10(VI12)
|
|||
|
|
NOP LQ VF23,-9(VI12)
|
|||
|
|
NOP LQ VF24,-8(VI12)
|
|||
|
|
NOP LQ VF25,-7(VI12)
|
|||
|
|
NOP LQ VF26,-6(VI12)
|
|||
|
|
NOP LQ VF27,-5(VI12)
|
|||
|
|
NOP LQ VF28,-4(VI12)
|
|||
|
|
NOP LQ VF29,-3(VI12)
|
|||
|
|
NOP LQ VF30,-2(VI12)
|
|||
|
|
NOP LQ VF31,-1(VI12)
|
|||
|
|
|
|||
|
|
; get renderer address
|
|||
|
|
NOP ILW.w VI01,0(VI13)
|
|||
|
|
|
|||
|
|
; reset pointer
|
|||
|
|
NOP IADDIU VI02,VI13,1
|
|||
|
|
|
|||
|
|
; restore render flags
|
|||
|
|
NOP XITOP VI14
|
|||
|
|
|
|||
|
|
; jump to postclip pass
|
|||
|
|
NOP JR VI01
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
; -------------
|
|||
|
|
; PARTICLE CODE
|
|||
|
|
; -------------
|
|||
|
|
|
|||
|
|
|
|||
|
|
Sprites:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
NOP IADDIU VI03,VI02,0
|
|||
|
|
NOP MR32.xyz VF08,VF00 ; upper left texcoords (0,0,1)
|
|||
|
|
ADDw.xyz VF29,VF00,VF00w NOP ; lower right texcoords (1,1,1)
|
|||
|
|
NOP MFIR.w VF05,VI00 ; clear adc bit
|
|||
|
|
|
|||
|
|
SpriteLoop:
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI03,VI04 ; step source pointer
|
|||
|
|
NOP LQ VF01,-1(VI03) ; get vertex
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDz VF02,VF14,VF01z NOP ; row 2 view transform
|
|||
|
|
MULw.xyz VF03,VF30,VF01w NOP ; viewport scale time size parameter
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP DIV Q,VF00w,VF02w ; calc 1/w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULAq.xyz ACC,VF02,Q NOP ; homogeneous div
|
|||
|
|
MSUBq.xyz VF04,VF03,Q NOP ; calc upper left vertex
|
|||
|
|
MADDq.xyz VF05,VF03,Q NOP ; calc lower right vertex
|
|||
|
|
NOP NOP
|
|||
|
|
NOP SQ.xyz VF29,1(VI02) ; store lower right texcoords
|
|||
|
|
NOP SQ VF04,0(VI02) ; store upper left vertex
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step destination pointer
|
|||
|
|
NOP SQ VF05,-1(VI02) ; store lower right vertex
|
|||
|
|
NOP IBEQ VI02,VI05,SpriteDone; break
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP IADD VI03,VI03,VI04 ; step source pointer
|
|||
|
|
NOP LQ VF01,-1(VI03) ; get vertex
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDz VF02,VF14,VF01z NOP ; row 2 view transform
|
|||
|
|
MULw.xyz VF03,VF30,VF01w NOP ; viewport scale time size parameter
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP DIV Q,VF00w,VF02w ; calc 1/w
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULAq.xyz ACC,VF02,Q NOP ; homogeneous div
|
|||
|
|
MADDq.xyz VF04,VF03,Q NOP ; calc lower right vertex
|
|||
|
|
MSUBq.xyz VF05,VF03,Q NOP ; calc upper left vertex
|
|||
|
|
NOP NOP
|
|||
|
|
NOP SQ.xyz VF08,1(VI02) ; store upper left texcoords
|
|||
|
|
NOP SQ VF04,0(VI02) ; store lower right vertex
|
|||
|
|
NOP IADD VI02,VI02,VI04 ; step destination pointer
|
|||
|
|
NOP SQ VF05,-1(VI02) ; store upper left vertex
|
|||
|
|
NOP IBNE VI02,VI05,SpriteLoop; loop
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
|
|||
|
|
SpriteDone:
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ VF03,3(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF03x LQ VF01,7(VI02)
|
|||
|
|
MADDAy ACC,VF13,VF03y NOP
|
|||
|
|
MADDz VF02,VF14,VF03z NOP
|
|||
|
|
MULw.xyz VF04,VF30,VF03w DIV Q,VF00w,VF02w
|
|||
|
|
ADDw.xyz VF29,VF00,VF00w MR32.xyz VF08,VF00
|
|||
|
|
ADDAx ACC,VF15,VF00x MFIR.w VF04,VI00
|
|||
|
|
MADDAx ACC,VF12,VF01x MFIR.w VF05,VI00
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP
|
|||
|
|
MADDz VF03,VF14,VF01z NOP
|
|||
|
|
|
|||
|
|
SpriteLoop:
|
|||
|
|
|
|||
|
|
MULw.xyz VF05,VF30,VF01w NOP
|
|||
|
|
MULAq.xyz ACC,VF02,Q IADD VI02,VI02,VI04
|
|||
|
|
MADDq.xyz VF02,VF04,Q LQ VF01,7(VI02)
|
|||
|
|
MSUBq.xyz VF04,VF04,Q DIV Q,VF00w,VF03w
|
|||
|
|
NOP SQ.xyz VF29,-3(VI02)
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF01x SQ VF02,-4(VI02)
|
|||
|
|
MADDAy ACC,VF13,VF01y IBEQ VI02,VI05,SpriteDone
|
|||
|
|
MADDz VF02,VF14,VF01z SQ VF04,-1(VI02)
|
|||
|
|
|
|||
|
|
|
|||
|
|
MULw.xyz VF04,VF30,VF01w NOP
|
|||
|
|
MULAq.xyz ACC,VF03,Q IADD VI02,VI02,VI04
|
|||
|
|
MSUBq.xyz VF03,VF05,Q LQ VF01,-1(VI02)
|
|||
|
|
MADDq.xyz VF05,VF05,Q DIV Q,VF00w,VF02w
|
|||
|
|
NOP SQ.xyz VF08,-3(VI02)
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP
|
|||
|
|
MADDAx ACC,VF12,VF01x SQ VF03,-4(VI02)
|
|||
|
|
MADDAy ACC,VF13,VF01y IBNE VI02,VI05,SpriteLoop
|
|||
|
|
MADDz VF03,VF14,VF01z SQ VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
SpriteDone:
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
SpriteCull:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
|
|||
|
|
NOP MR32.xyz VF08,VF00 ; upper left texcoords (0,0,1)
|
|||
|
|
ADDw.xyz VF29,VF00,VF00w NOP ; lower right texcoords (1,1,1)
|
|||
|
|
|
|||
|
|
SpriteCullLoop:
|
|||
|
|
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP LQ VF01,-1(VI02) ; get xyzr
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDAz ACC,VF14,VF01z NOP ; row 2 view transform
|
|||
|
|
MSUBw VF02,VF31,VF01w NOP ; 1st vertex frustum coords
|
|||
|
|
MADDw VF03,VF31,VF01w NOP ; 2nd vertex frustum coords
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULAw ACC,VF11,VF02w DIV Q,VF00w,VF02w
|
|||
|
|
MADD VF04,VF10,VF02 NOP ; apply viewport scale to 1st vertex
|
|||
|
|
MADD VF05,VF10,VF03 NOP ; apply viewport scale to 2nd vertex
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w NOP
|
|||
|
|
CLIPw.xyz VF05xyz,VF05w NOP
|
|||
|
|
MULq.xyz VF02,VF02,Q NOP
|
|||
|
|
MULq.xyz VF03,VF03,Q NOP
|
|||
|
|
NOP SQ.xyz VF29,-3(VI02)
|
|||
|
|
NOP FCAND VI01,0x000FFF
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w VF03,VI01
|
|||
|
|
NOP SQ VF02,-4(VI02)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBEQ VI02,VI05,SpriteCullDone
|
|||
|
|
NOP SQ VF03,-1(VI02)
|
|||
|
|
|
|||
|
|
|
|||
|
|
NOP IADD VI02,VI02,VI04
|
|||
|
|
NOP LQ VF01,-1(VI02) ; get xyzr
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x NOP ; row 3 view transform
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP ; row 0 view transform
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP ; row 1 view transform
|
|||
|
|
MADDAz ACC,VF14,VF01z NOP ; row 2 view transform
|
|||
|
|
MADDw VF02,VF31,VF01w NOP ; 1st vertex frustum coords
|
|||
|
|
MSUBw VF03,VF31,VF01w NOP ; 2nd vertex frustum coords
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MULAw ACC,VF11,VF02w DIV Q,VF00w,VF02w
|
|||
|
|
MADD VF04,VF10,VF02 NOP ; apply viewport scale to 1st vertex
|
|||
|
|
MADD VF05,VF10,VF03 NOP ; apply viewport scale to 2nd vertex
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
CLIPw.xyz VF04xyz,VF04w NOP
|
|||
|
|
CLIPw.xyz VF05xyz,VF05w NOP
|
|||
|
|
MULq.xyz VF02,VF02,Q NOP
|
|||
|
|
MULq.xyz VF03,VF03,Q NOP
|
|||
|
|
NOP SQ.xyz VF08,-3(VI02)
|
|||
|
|
NOP FCAND VI01,0x000FFF
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w VF03,VI01
|
|||
|
|
NOP SQ VF02,-4(VI02)
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,SpriteCullLoop
|
|||
|
|
NOP SQ VF03,-1(VI02)
|
|||
|
|
|
|||
|
|
SpriteCullDone:
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
|
|||
|
|
ADDAx ACC,VF15,VF00x LQ VF01,3(VI02)
|
|||
|
|
MADDAx ACC,VF12,VF01x MR32.z VF29,VF00
|
|||
|
|
MADDAy ACC,VF13,VF01y MR32.xyz VF08,VF00
|
|||
|
|
MADDAz ACC,VF14,VF01z NOP
|
|||
|
|
MADDw VF02,VF31,VF01w NOP
|
|||
|
|
MSUBw VF03,VF31,VF01w MR32.y VF29,VF29
|
|||
|
|
MULAw ACC,VF11,VF02w LQ VF01,7(VI02)
|
|||
|
|
MADD VF06,VF10,VF02 DIV Q,VF00w,VF02w
|
|||
|
|
MADD VF07,VF10,VF03 NOP
|
|||
|
|
ADDAx ACC,VF15,VF00x MR32.x VF29,VF29
|
|||
|
|
MADDAx ACC,VF12,VF01x NOP
|
|||
|
|
|
|||
|
|
SpriteCullLoop:
|
|||
|
|
|
|||
|
|
CLIPw.xyz VF06xyz,VF06w IADD VI02,VI02,VI04
|
|||
|
|
CLIPw.xyz VF07xyz,VF07w NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP
|
|||
|
|
MADDAz ACC,VF14,VF01z SQ.xyz VF29,-3(VI02)
|
|||
|
|
MSUBw VF04,VF31,VF01w NOP
|
|||
|
|
MADDw VF05,VF31,VF01w FCAND VI01,0x000FFF
|
|||
|
|
MULq.xyz VF02,VF02,Q IADDIU VI01,VI01,0x7FFF
|
|||
|
|
MULq.xyz VF03,VF03,Q LQ VF01,7(VI02)
|
|||
|
|
MULAw ACC,VF11,VF04w MFIR.w VF03,VI01
|
|||
|
|
MADD VF06,VF10,VF04 DIV Q,VF00w,VF04w
|
|||
|
|
MADD VF07,VF10,VF05 SQ VF02,-4(VI02)
|
|||
|
|
ADDAx ACC,VF15,VF00x IBEQ VI02,VI05,SpriteCullDone
|
|||
|
|
MADDAx ACC,VF12,VF01x SQ VF03,-1(VI02)
|
|||
|
|
|
|||
|
|
|
|||
|
|
CLIPw.xyz VF06xyz,VF06w IADD VI02,VI02,VI04
|
|||
|
|
CLIPw.xyz VF07xyz,VF07w NOP
|
|||
|
|
MADDAy ACC,VF13,VF01y NOP
|
|||
|
|
MADDAz ACC,VF14,VF01z SQ.xyz VF08,-3(VI02)
|
|||
|
|
MADDw VF02,VF31,VF01w NOP
|
|||
|
|
MSUBw VF03,VF31,VF01w FCAND VI01,0x000FFF
|
|||
|
|
MULq.xyz VF04,VF04,Q IADDIU VI01,VI01,0x7FFF
|
|||
|
|
MULq.xyz VF05,VF05,Q LQ VF01,7(VI02)
|
|||
|
|
MULAw ACC,VF11,VF02w MFIR.w VF05,VI01
|
|||
|
|
MADD VF06,VF10,VF02 DIV Q,VF00w,VF02w
|
|||
|
|
MADD VF07,VF10,VF03 SQ VF04,-4(VI02)
|
|||
|
|
ADDAx ACC,VF15,VF00x IBNE VI02,VI05,SpriteCullLoop
|
|||
|
|
MADDAx ACC,VF12,VF01x SQ VF05,-1(VI02)
|
|||
|
|
|
|||
|
|
SpriteCullDone:
|
|||
|
|
|
|||
|
|
NOP B NextPrim ; go back for next prim
|
|||
|
|
NOP LQI VF01,(VI02++) ; prefetch next tag
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
; ------------------
|
|||
|
|
; VU1 BILLBOARD CODE
|
|||
|
|
; ------------------
|
|||
|
|
|
|||
|
|
; The most general data format for billboards:
|
|||
|
|
|
|||
|
|
; input output
|
|||
|
|
; (s0,t0) (s0,t0,1,0)
|
|||
|
|
; (r0,g0,b0,a0) (r0,g0,b0,a0)
|
|||
|
|
; (x,y,z) (X0,Y0,Z0,0)
|
|||
|
|
; (s1,t1) (s1,t1,1,0)
|
|||
|
|
; (r1,g1,b1,a1) (r1,g1,b1,a1)
|
|||
|
|
; (w,h) (X1,Y1,Z1,0)
|
|||
|
|
; (s2,t2) (s2,t2,1,0)
|
|||
|
|
; (r2,g2,b2,a2) (r2,g2,b2,a2)
|
|||
|
|
; (tx,ty,ty) (X2,Y2,Z2,0)
|
|||
|
|
; (s3,t3) (s3,t3,1,0)
|
|||
|
|
; (r3,g3,b3,a3) (r3,g3,b3,a3)
|
|||
|
|
; (ax,ay,az) (X3,Y3,Z3,0)
|
|||
|
|
|
|||
|
|
; screen aligned billboards omit the axis vector (ax,ay,az)
|
|||
|
|
; and various optimised types can omit much of the rest of the data.
|
|||
|
|
|
|||
|
|
|
|||
|
|
.include "vu1/defs.vsm"
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
; float regs
|
|||
|
|
.equr Tag, VF01
|
|||
|
|
|
|||
|
|
.equr pvw, VF01
|
|||
|
|
.equr xyz0, VF02
|
|||
|
|
.equr xyz1, VF03
|
|||
|
|
.equr xyz2, VF04
|
|||
|
|
.equr xyz3, VF05
|
|||
|
|
.equr dim, VF06
|
|||
|
|
.equr pvl, VF07
|
|||
|
|
.equr axis, VF08
|
|||
|
|
.equr wdir, VF13
|
|||
|
|
.equr vdir2, VF13
|
|||
|
|
.equr viewvec,VF14
|
|||
|
|
.equr trans, VF15
|
|||
|
|
.equr stq0, VF16
|
|||
|
|
.equr stq1, VF17
|
|||
|
|
.equr stq2, VF18
|
|||
|
|
.equr stq3, VF19
|
|||
|
|
|
|||
|
|
.equr udir, VF20
|
|||
|
|
.equr vdir, VF21
|
|||
|
|
.equr vscale, VF22
|
|||
|
|
.equr cam, VF25
|
|||
|
|
.equr col, VF26
|
|||
|
|
.equr voff, VF27
|
|||
|
|
.equr matWF0, VF28
|
|||
|
|
.equr matWF1, VF29
|
|||
|
|
.equr matWF2, VF30
|
|||
|
|
.equr matWF3, VF31
|
|||
|
|
|
|||
|
|
; integer regs
|
|||
|
|
.equr Input, VI02
|
|||
|
|
.equr Output, VI03
|
|||
|
|
.equr Step, VI04
|
|||
|
|
.equr End, VI05
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.scope
|
|||
|
|
|
|||
|
|
ScreenAlignedBillboards:
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,COLR
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,ApplyColourBillboard
|
|||
|
|
NOP IADDIU VI01,VI00,Label3
|
|||
|
|
Label3:
|
|||
|
|
|
|||
|
|
|
|||
|
|
; double v basis vec
|
|||
|
|
ADD vdir2,vdir,vdir NOP
|
|||
|
|
|
|||
|
|
; init output pointer
|
|||
|
|
NOP IADDIU Output,Input,0
|
|||
|
|
|
|||
|
|
@Loop:
|
|||
|
|
|
|||
|
|
; load geometric values
|
|||
|
|
NOP LQ pvw,2(Input)
|
|||
|
|
NOP LQ dim,5(Input)
|
|||
|
|
NOP LQ pvl,8(Input)
|
|||
|
|
|
|||
|
|
; transform world position of pivot by matWF:
|
|||
|
|
ADDAx ACC,matWF3,zero NOP
|
|||
|
|
MADDAx ACC,matWF0,pvw.x NOP
|
|||
|
|
MADDAy ACC,matWF1,pvw.y NOP
|
|||
|
|
MADDAz ACC,matWF2,pvw.z NOP
|
|||
|
|
|
|||
|
|
; offset by pivot's local coords
|
|||
|
|
MSUBAx ACC,udir,pvl.x NOP
|
|||
|
|
MSUBAy ACC,vdir,pvl.y NOP
|
|||
|
|
|
|||
|
|
; generate the 4 corners in frustum coords
|
|||
|
|
MSUBAy ACC,vdir,dim.y NOP
|
|||
|
|
MSUBx xyz0,udir,dim.x NOP
|
|||
|
|
MADDx xyz1,udir,dim.x NOP
|
|||
|
|
MADDAy ACC,vdir2,dim.y NOP
|
|||
|
|
MSUBx xyz2,udir,dim.x NOP
|
|||
|
|
MADDx xyz3,udir,dim.x NOP
|
|||
|
|
|
|||
|
|
; culling tests
|
|||
|
|
CLIPw.xyz xyz0.xyz,xyz0.w NOP
|
|||
|
|
CLIPw.xyz xyz1.xyz,xyz1.w NOP
|
|||
|
|
CLIPw.xyz xyz2.xyz,xyz2.w NOP
|
|||
|
|
CLIPw.xyz xyz3.xyz,xyz3.w NOP
|
|||
|
|
|
|||
|
|
; calc 1/w
|
|||
|
|
NOP DIV Q,voff.w,xyz0.w
|
|||
|
|
NOP WAITQ
|
|||
|
|
|
|||
|
|
; transform to homogeneous viewport coords
|
|||
|
|
MULAw.xyz ACC,voff,xyz0.w NOP
|
|||
|
|
MADD.xyz xyz0,vscale,xyz0 NOP
|
|||
|
|
MADD.xyz xyz1,vscale,xyz1 NOP
|
|||
|
|
MADD.xyz xyz2,vscale,xyz2 NOP
|
|||
|
|
MADD.xyz xyz3,vscale,xyz3 NOP
|
|||
|
|
|
|||
|
|
; projection
|
|||
|
|
MULq.xyz xyz0,xyz0,Q NOP
|
|||
|
|
MULq.xyz xyz1,xyz1,Q NOP
|
|||
|
|
MULq.xyz xyz2,xyz2,Q NOP
|
|||
|
|
MULq.xyz xyz3,xyz3,Q NOP
|
|||
|
|
|
|||
|
|
; culling results
|
|||
|
|
NOP ISUBIU VI01,VI00,1
|
|||
|
|
NOP MFIR.w xyz0,VI01
|
|||
|
|
NOP MFIR.w xyz1,VI01
|
|||
|
|
NOP FCAND VI01,0xFFFFC0
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w xyz2,VI01
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w xyz3,VI01
|
|||
|
|
|
|||
|
|
; store corners
|
|||
|
|
NOP SQ xyz0, 2(Output)
|
|||
|
|
NOP SQ xyz1, 5(Output)
|
|||
|
|
NOP SQ xyz2, 8(Output)
|
|||
|
|
NOP SQ xyz3,11(Output)
|
|||
|
|
|
|||
|
|
; step pointers and loop
|
|||
|
|
NOP IADD Input,Input,Step
|
|||
|
|
NOP IADD Output,Output,Step
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE Output,End,@Loop
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; go back for more
|
|||
|
|
NOP LQI Tag,(Output++)
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP IADDIU Input,Output,0
|
|||
|
|
|
|||
|
|
.endscope
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.scope
|
|||
|
|
|
|||
|
|
LongAxisBillboards:
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,COLR
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,ApplyColourBillboard
|
|||
|
|
NOP IADDIU VI01,VI00,Label4
|
|||
|
|
Label4:
|
|||
|
|
|
|||
|
|
; init output pointer
|
|||
|
|
NOP IADDIU Output,Input,0
|
|||
|
|
|
|||
|
|
@Loop:
|
|||
|
|
|
|||
|
|
; load geometric values
|
|||
|
|
NOP LQ pvw, 2(Input)
|
|||
|
|
NOP LQ dim, 5(Input)
|
|||
|
|
NOP LQ pvl, 8(Input)
|
|||
|
|
NOP LQ axis,11(Input)
|
|||
|
|
|
|||
|
|
; get view vector in world space
|
|||
|
|
SUB.xyz viewvec,pvw,cam NOP
|
|||
|
|
|
|||
|
|
; generate transverse axis in world space
|
|||
|
|
OPMULA.xyz ACC,viewvec,axis NOP
|
|||
|
|
OPMSUB.xyz trans,axis,viewvec NOP
|
|||
|
|
NOP ERLENG P,trans
|
|||
|
|
NOP WAITP
|
|||
|
|
NOP MFP.w trans,P
|
|||
|
|
MULw.xyz trans,trans,trans.w NOP
|
|||
|
|
|
|||
|
|
; generate wdir
|
|||
|
|
OPMULA.xyz ACC,trans,axis NOP
|
|||
|
|
OPMSUB.xyz wdir,axis,trans NOP
|
|||
|
|
|
|||
|
|
; transform to frustum coords
|
|||
|
|
MULAx ACC,matWF0,trans.x NOP
|
|||
|
|
MADDAy ACC,matWF1,trans.y NOP
|
|||
|
|
MADDz trans,matWF2,trans.z NOP
|
|||
|
|
|
|||
|
|
MULAx ACC,matWF0,axis.x NOP
|
|||
|
|
MADDAy ACC,matWF1,axis.y NOP
|
|||
|
|
MADDz axis,matWF2,axis.z NOP
|
|||
|
|
|
|||
|
|
MULAx ACC,matWF0,wdir.x NOP
|
|||
|
|
MADDAy ACC,matWF1,wdir.y NOP
|
|||
|
|
MADDz wdir,matWF2,wdir.z NOP
|
|||
|
|
|
|||
|
|
; transform world position of pivot by matWF:
|
|||
|
|
ADDAx ACC,matWF3,zero NOP
|
|||
|
|
MADDAx ACC,matWF0,pvw.x NOP
|
|||
|
|
MADDAy ACC,matWF1,pvw.y NOP
|
|||
|
|
MADDAz ACC,matWF2,pvw.z NOP
|
|||
|
|
|
|||
|
|
; offset by pivot's local coords
|
|||
|
|
MSUBAx ACC,trans,pvl.x NOP
|
|||
|
|
MSUBAy ACC,axis,pvl.y NOP
|
|||
|
|
MSUBAz ACC,wdir,pvl.z NOP
|
|||
|
|
|
|||
|
|
; generate the 2 'left' corners in frustum coords
|
|||
|
|
MSUBAx.xy ACC,trans,dim.x NOP
|
|||
|
|
MSUBy xyz0,axis,dim.y NOP
|
|||
|
|
MADDy xyz2,axis,dim.y NOP
|
|||
|
|
|
|||
|
|
; generate the 2 'right' corners in frustum coords
|
|||
|
|
MADDAx.xy ACC,trans,dim.x NOP
|
|||
|
|
MADDAx.xy ACC,trans,dim.x NOP
|
|||
|
|
MSUBy xyz1,axis,dim.y NOP
|
|||
|
|
MADDy xyz3,axis,dim.y NOP
|
|||
|
|
|
|||
|
|
; culling tests
|
|||
|
|
CLIPw.xyz xyz0.xyz,xyz0.w NOP
|
|||
|
|
CLIPw.xyz xyz1.xyz,xyz1.w NOP
|
|||
|
|
CLIPw.xyz xyz2.xyz,xyz2.w NOP
|
|||
|
|
CLIPw.xyz xyz3.xyz,xyz3.w NOP
|
|||
|
|
|
|||
|
|
; transform to homogeneous viewport coords
|
|||
|
|
MULAw.xyz ACC,voff,xyz0.w NOP
|
|||
|
|
MADD.xyz xyz0,vscale,xyz0 NOP
|
|||
|
|
MADD.xyz xyz1,vscale,xyz1 NOP
|
|||
|
|
MULAw.xyz ACC,voff,xyz2.w NOP
|
|||
|
|
MADD.xyz xyz2,vscale,xyz2 NOP
|
|||
|
|
MADD.xyz xyz3,vscale,xyz3 NOP
|
|||
|
|
|
|||
|
|
; load texcoords
|
|||
|
|
NOP LQ.xyz stq0,0(Input)
|
|||
|
|
NOP LQ.xyz stq1,3(Input)
|
|||
|
|
NOP LQ.xyz stq2,6(Input)
|
|||
|
|
NOP LQ.xyz stq3,9(Input)
|
|||
|
|
|
|||
|
|
; homogeneous divs for 'top' corners
|
|||
|
|
NOP DIV Q,voff.w,xyz0.w
|
|||
|
|
NOP WAITQ
|
|||
|
|
MULq.xyz xyz0,xyz0,Q NOP
|
|||
|
|
MULq.xyz xyz1,xyz1,Q NOP
|
|||
|
|
MULq.xyz stq0,stq0,Q NOP
|
|||
|
|
MULq.xyz stq1,stq1,Q NOP
|
|||
|
|
|
|||
|
|
; homogeneous divs for 'bottom' corners
|
|||
|
|
NOP DIV Q,voff.w,xyz2.w
|
|||
|
|
NOP WAITQ
|
|||
|
|
MULq.xyz xyz2,xyz2,Q NOP
|
|||
|
|
MULq.xyz xyz3,xyz3,Q NOP
|
|||
|
|
MULq.xyz stq2,stq2,Q NOP
|
|||
|
|
MULq.xyz stq3,stq3,Q NOP
|
|||
|
|
|
|||
|
|
; culling results
|
|||
|
|
NOP ISUBIU VI01,VI00,1
|
|||
|
|
NOP MFIR.w xyz0,VI01
|
|||
|
|
NOP MFIR.w xyz1,VI01
|
|||
|
|
NOP FCAND VI01,0xFFFFC0
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w xyz2,VI01
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w xyz3,VI01
|
|||
|
|
|
|||
|
|
; store corners
|
|||
|
|
NOP SQ xyz0, 2(Output)
|
|||
|
|
NOP SQ xyz1, 5(Output)
|
|||
|
|
NOP SQ xyz2, 8(Output)
|
|||
|
|
NOP SQ xyz3,11(Output)
|
|||
|
|
|
|||
|
|
; store texcoords
|
|||
|
|
NOP SQ.xyz stq0,0(Output)
|
|||
|
|
NOP SQ.xyz stq1,3(Output)
|
|||
|
|
NOP SQ.xyz stq2,6(Output)
|
|||
|
|
NOP SQ.xyz stq3,9(Output)
|
|||
|
|
|
|||
|
|
; step pointers and loop
|
|||
|
|
NOP IADD Input,Input,Step
|
|||
|
|
NOP IADD Output,Output,Step
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE Output,End,@Loop
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; go back for more
|
|||
|
|
NOP LQI Tag,(Output++)
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP IADDIU Input,Output,0
|
|||
|
|
|
|||
|
|
.endscope
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
.scope
|
|||
|
|
|
|||
|
|
ShortAxisBillboards:
|
|||
|
|
|
|||
|
|
NOP IADDIU VI01,VI00,COLR
|
|||
|
|
NOP IAND VI01,VI14,VI01
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI01,VI00,ApplyColourBillboard
|
|||
|
|
NOP IADDIU VI01,VI00,Label5
|
|||
|
|
Label5:
|
|||
|
|
|
|||
|
|
; init output pointer
|
|||
|
|
NOP IADDIU Output,Input,0
|
|||
|
|
|
|||
|
|
@Loop:
|
|||
|
|
|
|||
|
|
; load geometric values
|
|||
|
|
NOP LQ pvw, 2(Input)
|
|||
|
|
NOP LQ dim, 5(Input)
|
|||
|
|
NOP LQ pvl, 8(Input)
|
|||
|
|
NOP LQ axis,11(Input)
|
|||
|
|
|
|||
|
|
; get view vector in world space
|
|||
|
|
SUB.xyz viewvec,pvw,cam NOP
|
|||
|
|
|
|||
|
|
; generate transverse axis in world space
|
|||
|
|
OPMULA.xyz ACC,axis,viewvec NOP
|
|||
|
|
OPMSUB.xyz trans,viewvec,axis NOP
|
|||
|
|
NOP ERLENG P,trans
|
|||
|
|
NOP WAITP
|
|||
|
|
NOP MFP.w trans,P
|
|||
|
|
MULw.xyz trans,trans,trans.w NOP
|
|||
|
|
|
|||
|
|
; generate wdir
|
|||
|
|
OPMULA.xyz ACC,trans,axis NOP
|
|||
|
|
OPMSUB.xyz wdir,axis,trans NOP
|
|||
|
|
|
|||
|
|
; transform to frustum coords
|
|||
|
|
MULAx ACC,matWF0,trans.x NOP
|
|||
|
|
MADDAy ACC,matWF1,trans.y NOP
|
|||
|
|
MADDz trans,matWF2,trans.z NOP
|
|||
|
|
|
|||
|
|
MULAx ACC,matWF0,axis.x NOP
|
|||
|
|
MADDAy ACC,matWF1,axis.y NOP
|
|||
|
|
MADDz axis,matWF2,axis.z NOP
|
|||
|
|
|
|||
|
|
MULAx ACC,matWF0,wdir.x NOP
|
|||
|
|
MADDAy ACC,matWF1,wdir.y NOP
|
|||
|
|
MADDz wdir,matWF2,wdir.z NOP
|
|||
|
|
|
|||
|
|
; transform world position of pivot by matWF:
|
|||
|
|
ADDAx ACC,matWF3,zero NOP
|
|||
|
|
MADDAx ACC,matWF0,pvw.x NOP
|
|||
|
|
MADDAy ACC,matWF1,pvw.y NOP
|
|||
|
|
MADDAz ACC,matWF2,pvw.z NOP
|
|||
|
|
|
|||
|
|
; offset by pivot's local coords
|
|||
|
|
MSUBAy ACC,trans,pvl.y NOP
|
|||
|
|
MSUBAx ACC,axis,pvl.x NOP
|
|||
|
|
MSUBAz ACC,wdir,pvl.z NOP
|
|||
|
|
|
|||
|
|
; generate the 2 'left' corners in frustum coords
|
|||
|
|
MSUBAy.xy ACC,trans,dim.y NOP
|
|||
|
|
MSUBx xyz0,axis,dim.x NOP
|
|||
|
|
MADDx xyz2,axis,dim.x NOP
|
|||
|
|
|
|||
|
|
; generate the 2 'right' corners in frustum coords
|
|||
|
|
MADDAy.xy ACC,trans,dim.y NOP
|
|||
|
|
MADDAy.xy ACC,trans,dim.y NOP
|
|||
|
|
MSUBx xyz1,axis,dim.x NOP
|
|||
|
|
MADDx xyz3,axis,dim.x NOP
|
|||
|
|
|
|||
|
|
; culling tests
|
|||
|
|
CLIPw.xyz xyz0.xyz,xyz0.w NOP
|
|||
|
|
CLIPw.xyz xyz1.xyz,xyz1.w NOP
|
|||
|
|
CLIPw.xyz xyz2.xyz,xyz2.w NOP
|
|||
|
|
CLIPw.xyz xyz3.xyz,xyz3.w NOP
|
|||
|
|
|
|||
|
|
; transform to homogeneous viewport coords
|
|||
|
|
MULAw.xyz ACC,voff,xyz0.w NOP
|
|||
|
|
MADD.xyz xyz0,vscale,xyz0 NOP
|
|||
|
|
MADD.xyz xyz1,vscale,xyz1 NOP
|
|||
|
|
MULAw.xyz ACC,voff,xyz2.w NOP
|
|||
|
|
MADD.xyz xyz2,vscale,xyz2 NOP
|
|||
|
|
MADD.xyz xyz3,vscale,xyz3 NOP
|
|||
|
|
|
|||
|
|
; load texcoords
|
|||
|
|
NOP LQ.xyz stq0,0(Input)
|
|||
|
|
NOP LQ.xyz stq1,3(Input)
|
|||
|
|
NOP LQ.xyz stq2,6(Input)
|
|||
|
|
NOP LQ.xyz stq3,9(Input)
|
|||
|
|
|
|||
|
|
; homogeneous divs for 'top' corners
|
|||
|
|
NOP DIV Q,voff.w,xyz0.w
|
|||
|
|
NOP WAITQ
|
|||
|
|
MULq.xyz xyz0,xyz0,Q NOP
|
|||
|
|
MULq.xyz xyz1,xyz1,Q NOP
|
|||
|
|
MULq.xyz stq0,stq0,Q NOP
|
|||
|
|
MULq.xyz stq1,stq1,Q NOP
|
|||
|
|
|
|||
|
|
; homogeneous divs for 'bottom' corners
|
|||
|
|
NOP DIV Q,voff.w,xyz2.w
|
|||
|
|
NOP WAITQ
|
|||
|
|
MULq.xyz xyz2,xyz2,Q NOP
|
|||
|
|
MULq.xyz xyz3,xyz3,Q NOP
|
|||
|
|
MULq.xyz stq2,stq2,Q NOP
|
|||
|
|
MULq.xyz stq3,stq3,Q NOP
|
|||
|
|
|
|||
|
|
; culling results
|
|||
|
|
NOP ISUBIU VI01,VI00,1
|
|||
|
|
NOP MFIR.w xyz0,VI01
|
|||
|
|
NOP MFIR.w xyz1,VI01
|
|||
|
|
NOP FCAND VI01,0xFFFFC0
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w xyz2,VI01
|
|||
|
|
NOP FCAND VI01,0x03FFFF
|
|||
|
|
NOP IADDIU VI01,VI01,0x7FFF
|
|||
|
|
NOP MFIR.w xyz3,VI01
|
|||
|
|
|
|||
|
|
; store corners
|
|||
|
|
NOP SQ xyz0, 2(Output)
|
|||
|
|
NOP SQ xyz1, 5(Output)
|
|||
|
|
NOP SQ xyz2, 8(Output)
|
|||
|
|
NOP SQ xyz3,11(Output)
|
|||
|
|
|
|||
|
|
; store texcoords
|
|||
|
|
NOP SQ.xyz stq0,0(Output)
|
|||
|
|
NOP SQ.xyz stq1,3(Output)
|
|||
|
|
NOP SQ.xyz stq2,6(Output)
|
|||
|
|
NOP SQ.xyz stq3,9(Output)
|
|||
|
|
|
|||
|
|
; step pointers and loop
|
|||
|
|
NOP IADD Input,Input,Step
|
|||
|
|
NOP IADD Output,Output,Step
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE Output,End,@Loop
|
|||
|
|
NOP NOP
|
|||
|
|
|
|||
|
|
; go back for more
|
|||
|
|
NOP LQI Tag,(Output++)
|
|||
|
|
NOP B NextPrim
|
|||
|
|
NOP IADDIU Input,Output,0
|
|||
|
|
|
|||
|
|
.endscope
|
|||
|
|
|
|||
|
|
|
|||
|
|
; applying material colour to a billboard
|
|||
|
|
ApplyColourBillboard:
|
|||
|
|
|
|||
|
|
.if 0
|
|||
|
|
; unoptimised version
|
|||
|
|
|
|||
|
|
NOP LOI 8388608
|
|||
|
|
ADDAi ACC,VF00,I LOI 8388863
|
|||
|
|
|
|||
|
|
LoopACB:NOP LQ.xyz VF01,1(VI02)
|
|||
|
|
NOP IADDIU VI02,VI02,3
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
ITOF0.xyz VF02,VF01 NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MADD.xyz VF03,VF02,col NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
MINIi.xyz VF04,VF03,I NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP NOP
|
|||
|
|
NOP IBNE VI02,VI05,LoopACB
|
|||
|
|
NOP SQ.xyz VF04,-2(VI02)
|
|||
|
|
|
|||
|
|
.else
|
|||
|
|
; optimised version
|
|||
|
|
|
|||
|
|
NOP LOI 8388608
|
|||
|
|
ADDAi ACC,VF00,I LQ.xyz VF03,1(VI02)
|
|||
|
|
ITOF0.xyz VF03,VF03 LQ.xyz VF02,4(VI02)
|
|||
|
|
MADD.xyz VF03,VF03,col LOI 8388863
|
|||
|
|
ITOF0.xyz VF02,VF02 LQ.xyz VF01,7(VI02)
|
|||
|
|
|
|||
|
|
LoopACB:MINIi.xyz VF04,VF03,I IADDIU VI02,VI02,3
|
|||
|
|
MADD.xyz VF03,VF02,col NOP
|
|||
|
|
ITOF0.xyz VF02,VF01 LQ.xyz VF01,7(VI02)
|
|||
|
|
NOP IBNE VI02,VI05,LoopACB
|
|||
|
|
NOP SQ.xyz VF04,-2(VI02)
|
|||
|
|
|
|||
|
|
.endif
|
|||
|
|
|
|||
|
|
NOP JR VI01
|
|||
|
|
NOP ISUB VI02,VI02,VI06
|
|||
|
|
|
|||
|
|
;-----------------------------------------------------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
; Can use this to see how much micromem is left. (The assembler warns if the code overflows.)
|
|||
|
|
;.rept 93
|
|||
|
|
;NOP NOP
|
|||
|
|
;.endr
|
|||
|
|
|
|||
|
|
|
|||
|
|
.EndMPG
|
|||
|
|
|
|||
|
|
MPGEnd:
|
|||
|
|
|
|||
|
|
|
|||
|
|
|