mirror of
https://github.com/thug1src/thug.git
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61 lines
2.5 KiB
V Shell
61 lines
2.5 KiB
V Shell
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xvs.1.1
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#include "anim_vertdefs.h"
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#pragma screenspace
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;------------------------------------------------------------------------------
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; Bone space transforms
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;------------------------------------------------------------------------------
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; Get matrix index 1
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mov a0.x, VSIN_REG_INDICES.x
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; Weight matrix
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mul VSTMP_REG_MAT0, VSIN_REG_WEIGHTS.x, c[0 + a0.x VSCONST_REG_MATRIX_OFFSET]
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mul VSTMP_REG_MAT1, VSIN_REG_WEIGHTS.x, c[1 + a0.x VSCONST_REG_MATRIX_OFFSET]
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mul VSTMP_REG_MAT2, VSIN_REG_WEIGHTS.x, c[2 + a0.x VSCONST_REG_MATRIX_OFFSET]
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;------------------------------------------------------------------------------
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; Get matrix index 2
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mov a0.x, VSIN_REG_INDICES.y
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; Weight matrix
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mad VSTMP_REG_MAT0, VSIN_REG_WEIGHTS.y, c[0 + a0.x VSCONST_REG_MATRIX_OFFSET], VSTMP_REG_MAT0
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mad VSTMP_REG_MAT1, VSIN_REG_WEIGHTS.y, c[1 + a0.x VSCONST_REG_MATRIX_OFFSET], VSTMP_REG_MAT1
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mad VSTMP_REG_MAT2, VSIN_REG_WEIGHTS.y, c[2 + a0.x VSCONST_REG_MATRIX_OFFSET], VSTMP_REG_MAT2
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;------------------------------------------------------------------------------
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; Get matrix index 3
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mov a0.x, VSIN_REG_INDICES.z
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; Weight matrix
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mad VSTMP_REG_MAT0, VSIN_REG_WEIGHTS.z, c[0 + a0.x VSCONST_REG_MATRIX_OFFSET], VSTMP_REG_MAT0
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mad VSTMP_REG_MAT1, VSIN_REG_WEIGHTS.z, c[1 + a0.x VSCONST_REG_MATRIX_OFFSET], VSTMP_REG_MAT1
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mad VSTMP_REG_MAT2, VSIN_REG_WEIGHTS.z, c[2 + a0.x VSCONST_REG_MATRIX_OFFSET], VSTMP_REG_MAT2
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; Transform position by weighted matrix
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dp4 VSTMP_REG_POS_ACCUM.x, VSIN_REG_POS, VSTMP_REG_MAT0
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dp4 VSTMP_REG_POS_ACCUM.y, VSIN_REG_POS, VSTMP_REG_MAT1
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dp4 VSTMP_REG_POS_ACCUM.z, VSIN_REG_POS, VSTMP_REG_MAT2
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;------------------------------------------------------------------------------
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; Combined camera & projection matrix
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;------------------------------------------------------------------------------
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dph oPos.x, VSTMP_REG_POS_ACCUM, VSCONST_REG_TRANSFORM_X
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dph oPos.y, VSTMP_REG_POS_ACCUM, VSCONST_REG_TRANSFORM_Y
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dph oPos.z, VSTMP_REG_POS_ACCUM, VSCONST_REG_TRANSFORM_Z
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dph oPos.w, VSTMP_REG_POS_ACCUM, VSCONST_REG_TRANSFORM_W
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;------------------------------------------------------------------------------
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; oPos to screenspace transformation
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;------------------------------------------------------------------------------
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mul oPos.xyz, r12, c94 ; scale
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+ rcc r1.x, r12.w ; compute 1/w
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mad oPos.xyz, r12, r1.x, c95 ; scale by 1/w, add offset
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