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thug/Code/Gfx/XBox/p_NxParticleRibbonTrail.cpp
thug1src d8eb714766 thug1src
2016-02-14 08:39:12 +11:00

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#include <core/defines.h>
#include <gfx/xbox/nx/render.h>
#include "gfx/xbox/p_nxparticleRibbonTrail.h"
extern DWORD PixelShader1;
namespace Nx
{
/******************************************************************/
/* */
/* */
/******************************************************************/
CXboxParticleRibbonTrail::CXboxParticleRibbonTrail()
{
}
/******************************************************************/
/* */
/* */
/******************************************************************/
CXboxParticleRibbonTrail::CXboxParticleRibbonTrail( uint32 checksum, int max_particles, uint32 texture_checksum, uint32 blendmode_checksum, int fix, int num_segments, float split, int history )
{
m_checksum = checksum;
m_max_particles = max_particles;
m_num_particles = 0;
m_mid_time = -1.0f;
m_history = history;
mp_particle_array = new CParticleEntry[max_particles];
// Allocate vertex buffer.
mp_vertices = new float*[( history + 1)];
for( int lp = 0; lp < ( history + 1 ); lp++ )
{
mp_vertices[lp] = new float[max_particles * 3];
}
m_num_vertex_buffers = history + 1;
// Create the engine representation.
mp_engine_particle = new NxXbox::sParticleSystem( max_particles, NxXbox::PARTICLE_TYPE_RIBBONTRAIL, texture_checksum, blendmode_checksum, fix, num_segments, history );
// Default color.
m_start_color = new Image::RGBA[m_num_vertex_buffers];
m_mid_color = new Image::RGBA[m_num_vertex_buffers];
m_end_color = new Image::RGBA[m_num_vertex_buffers];
for ( int lp = 0; lp < m_num_vertex_buffers; lp++ )
{
m_start_color[lp].r = 128;
m_start_color[lp].g = 128;
m_start_color[lp].b = 128;
m_start_color[lp].a = 255;
m_mid_color[lp].r = 128;
m_mid_color[lp].g = 128;
m_mid_color[lp].b = 128;
m_mid_color[lp].a = 255;
m_end_color[lp].r = 128;
m_end_color[lp].g = 128;
m_end_color[lp].b = 128;
m_end_color[lp].a = 255;
}
}
/******************************************************************/
/* */
/* */
/******************************************************************/
CXboxParticleRibbonTrail::~CXboxParticleRibbonTrail()
{
delete [] mp_particle_array;
for ( int lp = 0; lp < m_num_vertex_buffers; lp++ )
{
delete [] mp_vertices[lp];
}
delete [] mp_vertices;
delete [] m_start_color;
delete [] m_mid_color;
delete [] m_end_color;
delete mp_engine_particle;
}
/******************************************************************/
/* */
/* */
/******************************************************************/
void CXboxParticleRibbonTrail::plat_get_position( int entry, int list, float * x, float * y, float * z )
{
float* p_v = &mp_vertices[list][entry*3];
*x = p_v[0];
*y = p_v[1];
*z = p_v[2];
}
/******************************************************************/
/* */
/* */
/******************************************************************/
void CXboxParticleRibbonTrail::plat_set_position( int entry, int list, float x, float y, float z )
{
float* p_v = &mp_vertices[list][entry*3];
p_v[0] = x;
p_v[1] = y;
p_v[2] = z;
}
/******************************************************************/
/* */
/* */
/******************************************************************/
void CXboxParticleRibbonTrail::plat_add_position( int entry, int list, float x, float y, float z )
{
float* p_v = &mp_vertices[list][entry*3];
p_v[0] += x;
p_v[1] += y;
p_v[2] += z;
}
/******************************************************************/
/* */
/* */
/******************************************************************/
int CXboxParticleRibbonTrail::plat_get_num_particle_colors( void ) { return m_num_vertex_buffers; }
int CXboxParticleRibbonTrail::plat_get_num_vertex_lists( void ) { return m_num_vertex_buffers; }
void CXboxParticleRibbonTrail::plat_set_sr( int entry, uint8 value ) { m_start_color[entry].r = value; }
void CXboxParticleRibbonTrail::plat_set_sg( int entry, uint8 value ) { m_start_color[entry].g = value; }
void CXboxParticleRibbonTrail::plat_set_sb( int entry, uint8 value ) { m_start_color[entry].b = value; }
void CXboxParticleRibbonTrail::plat_set_sa( int entry, uint8 value ) { m_start_color[entry].a = value; }
void CXboxParticleRibbonTrail::plat_set_mr( int entry, uint8 value ) { m_mid_color[entry].r = value; }
void CXboxParticleRibbonTrail::plat_set_mg( int entry, uint8 value ) { m_mid_color[entry].g = value; }
void CXboxParticleRibbonTrail::plat_set_mb( int entry, uint8 value ) { m_mid_color[entry].b = value; }
void CXboxParticleRibbonTrail::plat_set_ma( int entry, uint8 value ) { m_mid_color[entry].a = value; }
void CXboxParticleRibbonTrail::plat_set_er( int entry, uint8 value ) { m_end_color[entry].r = value; }
void CXboxParticleRibbonTrail::plat_set_eg( int entry, uint8 value ) { m_end_color[entry].g = value; }
void CXboxParticleRibbonTrail::plat_set_eb( int entry, uint8 value ) { m_end_color[entry].b = value; }
void CXboxParticleRibbonTrail::plat_set_ea( int entry, uint8 value ) { m_end_color[entry].a = value; }
/******************************************************************/
/* */
/* */
/******************************************************************/
void CXboxParticleRibbonTrail::plat_render( void )
{
// Draw the particles.
if( m_num_particles > 0 )
{
int lp;
CParticleEntry *p_particle;
float *p_v;
// Mth::Vector min, max; // For dynamic bounding box calculation.
// Used to figure the right and up vectors for creating screen-aligned particle quads.
D3DXMATRIX *p_matrix = (D3DXMATRIX*)&NxXbox::EngineGlobals.view_matrix;
// Get the 'right' vector as the cross product of camera 'at and world 'up'.
Mth::Vector at( p_matrix->m[0][2], p_matrix->m[1][2], p_matrix->m[2][2] );
Image::RGBA color[2];
Image::RGBA *p_col0;
Image::RGBA *p_col1;
// Obtain push buffer lock.
DWORD *p_push;
DWORD dwords_per_particle = 16 * ( m_num_vertex_buffers - 1 );
DWORD dword_count = dwords_per_particle * m_num_particles;
// Submit particle material.
mp_engine_particle->mp_material->Submit();
// Set up correct vertex and pixel shader.
NxXbox::set_vertex_shader( D3DFVF_XYZ | D3DFVF_DIFFUSE );
NxXbox::set_pixel_shader( PixelShader1 );
// The additional number (+5 is minimum) is to reserve enough overhead for the encoding parameters. It can safely be more, but no less.
p_push = D3DDevice_BeginPush( dword_count + 32 );
// Note that p_push is returned as a pointer to write-combined memory. Writes to write-combined memory should be
// consecutive and in increasing order. Reads should be avoided. Additionally, any CPU reads from memory or the
// L2 cache can force expensive partial flushes of the 32-byte write-combine cache.
p_push[0] = D3DPUSH_ENCODE( D3DPUSH_SET_BEGIN_END, 1 );
p_push[1] = D3DPT_QUADLIST;
p_push += 2;
// Set up loop variables here, since we be potentially enetering the loop more than once.
lp = 0;
p_particle = mp_particle_array;
p_v = mp_vertices[0];
while( dword_count > 0 )
{
int dwords_written = 0;
// NOTE: A maximum of 2047 DWORDs can be specified to D3DPUSH_ENCODE. If there is more than 2047 DWORDs of vertex
// data, simply split the data into multiple D3DPUSH_ENCODE( D3DPUSH_INLINE_ARRAY ) sections.
p_push[0] = D3DPUSH_ENCODE( D3DPUSH_NOINCREMENT_FLAG | D3DPUSH_INLINE_ARRAY, ( dword_count > 2047 ) ? ((int)( 2047 / dwords_per_particle )) * dwords_per_particle: dword_count );
++p_push;
for( ; lp < m_num_particles; lp++, p_particle++, p_v += 3 )
{
// Check to see if writing another particle will take us over the edge.
if(( dwords_written + dwords_per_particle ) > 2047 )
{
break;
}
float terp = p_particle->m_time / p_particle->m_life;
Mth::Vector pos[2];
p_v = &mp_vertices[0][lp*3];
pos[0].Set( p_v[0] + m_pos[X], p_v[1] + m_pos[Y], p_v[2] + m_pos[Z] );
p_v = &mp_vertices[1][lp*3];
pos[1].Set( p_v[0] + m_pos[X], p_v[1] + m_pos[Y], p_v[2] + m_pos[Z] );
Mth::Vector part_vec = pos[1] - pos[0];
Mth::Vector perp_vec = Mth::CrossProduct( part_vec, at );
perp_vec.Normalize();
// Dynamic bounding box calculation.
// if( lp == 0 )
// {
// min = pos[0];
// max = pos[0];
// }
// else
// {
// if( pos[0][X] < min[X] ) min[X] = pos[0][X]; else if( pos[0][X] > max[X] ) max[X] = pos[0][X];
// if( pos[0][Y] < min[Y] ) min[Y] = pos[0][Y]; else if( pos[0][Y] > max[Y] ) max[Y] = pos[0][Y];
// if( pos[0][Z] < min[Z] ) min[Z] = pos[0][Z]; else if( pos[0][Z] > max[Z] ) max[Z] = pos[0][Z];
// }
float w = p_particle->m_sw + ( ( p_particle->m_ew - p_particle->m_sw ) * terp );
Mth::Vector tmp[4];
if( m_mid_time >= 0.0f )
{
if ( terp < m_mid_time )
{
p_col0 = m_start_color;
p_col1 = m_mid_color;
// Adjust interpolation for this half of the color blend.
terp = terp / m_mid_time;
}
else
{
p_col0 = m_mid_color;
p_col1 = m_end_color;
// Adjust interpolation for this half of the color blend.
terp = ( terp - m_mid_time ) / ( 1.0f - m_mid_time );
}
}
else
{
// No mid color specified.
p_col0 = m_start_color;
p_col1 = m_end_color;
}
Image::RGBA start = *p_col0++;
Image::RGBA end = *p_col1++;
color[0].b = start.r + (uint8)(( ((float)( end.r - start.r )) * terp ));
color[0].g = start.g + (uint8)(( ((float)( end.g - start.g )) * terp ));
color[0].r = start.b + (uint8)(( ((float)( end.b - start.b )) * terp ));
color[0].a = start.a + (uint8)(( ((float)( end.a - start.a )) * terp ));
tmp[0] = pos[0] + ( perp_vec * w );
tmp[1] = pos[0] - ( perp_vec * w );
for( int c = 1; c < m_num_vertex_buffers; c++ )
{
start = *p_col0++;
end = *p_col1++;
color[1].b = start.r + (uint8)(( ((float)( end.r - start.r )) * terp ));
color[1].g = start.g + (uint8)(( ((float)( end.g - start.g )) * terp ));
color[1].r = start.b + (uint8)(( ((float)( end.b - start.b )) * terp ));
color[1].a = start.a + (uint8)(( ((float)( end.a - start.a )) * terp ));
if( c > 1 )
{
p_v = &mp_vertices[c][lp*3];
pos[1].Set( p_v[0] + m_pos[X], p_v[1] + m_pos[Y], p_v[2] + m_pos[Z] );
part_vec = pos[1] - pos[0];
perp_vec = Mth::CrossProduct( part_vec, at );
perp_vec.Normalize();
}
tmp[2] = pos[1] + ( perp_vec * w );
tmp[3] = pos[1] - ( perp_vec * w );
p_push[0] = *((DWORD*)&tmp[0][X] );
p_push[1] = *((DWORD*)&tmp[0][Y] );
p_push[2] = *((DWORD*)&tmp[0][Z] );
p_push[3] = *((DWORD*)&color[0] );
p_push += 4;
p_push[0] = *((DWORD*)&tmp[1][X] );
p_push[1] = *((DWORD*)&tmp[1][Y] );
p_push[2] = *((DWORD*)&tmp[1][Z] );
p_push[3] = *((DWORD*)&color[0] );
p_push += 4;
p_push[0] = *((DWORD*)&tmp[3][X] );
p_push[1] = *((DWORD*)&tmp[3][Y] );
p_push[2] = *((DWORD*)&tmp[3][Z] );
p_push[3] = *((DWORD*)&color[1] );
p_push += 4;
p_push[0] = *((DWORD*)&tmp[2][X] );
p_push[1] = *((DWORD*)&tmp[2][Y] );
p_push[2] = *((DWORD*)&tmp[2][Z] );
p_push[3] = *((DWORD*)&color[1] );
p_push += 4;
color[0] = color[1];
pos[0] = pos[1];
tmp[0] = tmp[2];
tmp[1] = tmp[3];
}
dwords_written += dwords_per_particle;
dword_count -= dwords_per_particle;
}
}
p_push[0] = D3DPUSH_ENCODE( D3DPUSH_SET_BEGIN_END, 1 );
p_push[1] = 0;
p_push += 2;
D3DDevice_EndPush( p_push );
// Set the mesh bounding box and sphere.
// mp_engine_particle->mp_scene->m_semitransparent_meshes[0]->m_bbox.SetMin( min );
// mp_engine_particle->mp_scene->m_semitransparent_meshes[0]->m_bbox.SetMax( max );
// mp_engine_particle->mp_scene->m_semitransparent_meshes[0]->m_sphere_center = D3DXVECTOR3( min[X] + (( max[X] - min[X] ) * 0.5f ), min[Y] + (( max[Y] - min[Y] ) * 0.5f ), min[Z] + (( max[Z] - min[Z] ) * 0.5f ));
// mp_engine_particle->mp_scene->m_semitransparent_meshes[0]->m_sphere_radius = 360.0f;
// And the scene bounding sphere.
// mp_engine_particle->mp_scene->m_sphere_center = mp_engine_particle->mp_scene->m_semitransparent_meshes[0]->m_sphere_center;
// mp_engine_particle->mp_scene->m_sphere_radius = mp_engine_particle->mp_scene->m_semitransparent_meshes[0]->m_sphere_radius;
}
}
} // Nx
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