fftfragmentx_cg2.ocg

选自<gpu gemes 2>,用gpu实现快速傅立叶变换

!!ARBfp1.0
OPTION NV_fragment_program2;
OPTION ATI_draw_buffers;
# cgc version 1.3.0001, build date Aug  4 2004 10:01:10
# command line args: -q -profile fp40 -entry FragmentProgram NumTemps=32 NumInstructionSlots=8196 NumTexInstructionSlots=8196 NumMathInstructionSlots=8196 MaxTexIndirections=8196 MaxDrawBuffers=4
#vendor NVIDIA Corporation
#version 1.0.02
#profile fp40
#program FragmentProgram
#semantic FragmentProgram.Real1
#semantic FragmentProgram.Imag1
#semantic FragmentProgram.Real2
#semantic FragmentProgram.Imag2
#var float4 TexCoordRect0 : $vin.TEX0 : TEX0 : 0 : 1
#var float4 TexCoordRect1 : $vin.TEX1 : TEX1 : 1 : 1
#var float4 sColor0 : $vout.COL : COL : 2 : 1
#var float4 sColor1 : $vout.COL1 : COL1 : 3 : 1
#var float4 sColor2 : $vout.COL2 : COL2 : 4 : 1
#var float4 sColor3 : $vout.COL3 : COL3 : 5 : 1
#var samplerRECT Real1 :  : texunit 0 : 6 : 1
#var samplerRECT Imag1 :  : texunit 1 : 7 : 1
#var samplerRECT Real2 :  : texunit 2 : 8 : 1
#var samplerRECT Imag2 :  : texunit 3 : 9 : 1
PARAM c[1] = { program.local[0] };
TEMP R0;
TEMP R1;
TEMP R2;
TEMP RC;
TEMP HC;
SINR  R0.w, fragment.texcoord[1].x;
COSR  R0.y, fragment.texcoord[1].x;
TEX   R1.x, fragment.texcoord[0].wyzw, texture[1], RECT;
MULR  R0.z, R0.w, R1.x;
MULR  R1.y, R0, R1.x;
TEX   R2.x, fragment.texcoord[0].wyzw, texture[3], RECT;
MULR  R1.w, R0.y, R2.x;
MULR  R1.z, R0.w, R2.x;
TEX   R1.x, fragment.texcoord[0].wyzw, texture[2], RECT;
MADR  R1.w, R0, R1.x, R1;
TEX   R2.x, fragment.texcoord[0].zyzw, texture[3], RECT;
ADDR  result.color[3].x, R2, R1.w;
MADR  R2.w, R0.y, R1.x, -R1.z;
TEX   R1.x, fragment.texcoord[0].wyzw, texture[0], RECT;
MADR  R1.w, R0, R1.x, R1.y;
TEX   R0.x, fragment.texcoord[0].zyzw, texture[2], RECT;
ADDR  result.color[2].x, R0, R2.w;
MADR  R0.w, R0.y, R1.x, -R0.z;
TEX   R0.x, fragment.texcoord[0].zyzw, texture[1], RECT;
ADDR  result.color[1].x, R0, R1.w;
TEX   R0.x, fragment.texcoord[0].zyzw, texture[0], RECT;
ADDR  result.color.x, R0, R0.w;
END
# 22 instructions, 3 R-regs, 0 H-regs