fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-01-07 02:10:12 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

r300_fragprog: Use less complex instructions

Browse source 
MOV, ADD and MUL do not fit the hardware as well as MAD, but they are less
complex and thus leave more room for future optimizations.
This commit is contained in:
Nicolai Haehnle 2008-06-14 20:26:10 +02:00
parent b97e48ffe3
commit 825fdfd0c1
1 changed files with 10 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
src/mesa/drivers/dri/r300/r300_fragprog.c
View file

@ -89,21 +89,15 @@ static GLboolean transform_TEX(
tgt = radeonClauseInsertInstructions(context->compiler, context->dest,
context->dest->NumInstructions, 1);
tgt->Opcode = OPCODE_MAD;
tgt->Opcode = OPCODE_MOV;
tgt->DstReg = inst.DstReg;
tgt->SrcReg[0].File = PROGRAM_BUILTIN;
tgt->SrcReg[0].Swizzle = SWIZZLE_0000;
tgt->SrcReg[1].File = PROGRAM_BUILTIN;
tgt->SrcReg[1].Swizzle = SWIZZLE_0000;
tgt->SrcReg[2].File = PROGRAM_BUILTIN;
tgt->SrcReg[2].Swizzle = comparefunc == GL_ALWAYS ? SWIZZLE_1111 : SWIZZLE_0000;
tgt->SrcReg[0].Swizzle = comparefunc == GL_ALWAYS ? SWIZZLE_1111 : SWIZZLE_0000;
return GL_TRUE;
}
int tempreg = radeonCompilerAllocateTemporary(context->compiler);
inst.DstReg.File = PROGRAM_TEMPORARY;
inst.DstReg.Index = tempreg;
inst.DstReg.Index = radeonCompilerAllocateTemporary(context->compiler);
inst.DstReg.WriteMask = WRITEMASK_XYZW;
}
@ -129,14 +123,12 @@ static GLboolean transform_TEX(
tgt = radeonClauseInsertInstructions(context->compiler, context->dest,
context->dest->NumInstructions, 1);
tgt->Opcode = OPCODE_MAD;
tgt->Opcode = OPCODE_MUL;
tgt->DstReg.File = PROGRAM_TEMPORARY;
tgt->DstReg.Index = tempreg;
tgt->SrcReg[0] = inst.SrcReg[0];
tgt->SrcReg[1].File = PROGRAM_STATE_VAR;
tgt->SrcReg[1].Index = factor_index;
tgt->SrcReg[2].File = PROGRAM_BUILTIN;
tgt->SrcReg[2].Swizzle = SWIZZLE_0000;
reset_srcreg(&inst.SrcReg[0]);
inst.SrcReg[0].File = PROGRAM_TEMPORARY;
@ -153,14 +145,10 @@ static GLboolean transform_TEX(
tgt = radeonClauseInsertInstructions(context->compiler, context->dest,
context->dest->NumInstructions, 1);
tgt->Opcode = OPCODE_MAD;
tgt->Opcode = OPCODE_MOV;
tgt->DstReg.File = PROGRAM_TEMPORARY;
tgt->DstReg.Index = tempreg;
tgt->SrcReg[0] = inst.SrcReg[0];
tgt->SrcReg[1].File = PROGRAM_BUILTIN;
tgt->SrcReg[1].Swizzle = SWIZZLE_1111;
tgt->SrcReg[2].File = PROGRAM_BUILTIN;
tgt->SrcReg[2].Swizzle = SWIZZLE_0000;
reset_srcreg(&inst.SrcReg[0]);
inst.SrcReg[0].File = PROGRAM_TEMPORARY;
@ -191,7 +179,7 @@ static GLboolean transform_TEX(
tgt = radeonClauseInsertInstructions(context->compiler, context->dest,
context->dest->NumInstructions, 2);
tgt[0].Opcode = OPCODE_MAD;
tgt[0].Opcode = OPCODE_ADD;
tgt[0].DstReg = inst.DstReg;
tgt[0].DstReg.WriteMask = orig_inst->DstReg.WriteMask;
tgt[0].SrcReg[0].File = PROGRAM_TEMPORARY;
@ -200,10 +188,8 @@ static GLboolean transform_TEX(
tgt[0].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_Z);
else if (depthmode == 2) /* GL_ALPHA */
tgt[0].SrcReg[0].Swizzle = SWIZZLE_WWWW;
tgt[0].SrcReg[1].File = PROGRAM_BUILTIN;
tgt[0].SrcReg[1].Swizzle = SWIZZLE_1111;
tgt[0].SrcReg[2] = inst.SrcReg[0];
tgt[0].SrcReg[2].Swizzle = SWIZZLE_ZZZZ;
tgt[0].SrcReg[1] = inst.SrcReg[0];
tgt[0].SrcReg[1].Swizzle = SWIZZLE_ZZZZ;
/* Recall that SrcReg[0] is tex, SrcReg[2] is r and:
* r < tex <=> -tex+r < 0
@ -211,7 +197,7 @@ static GLboolean transform_TEX(
if (comparefunc == GL_LESS || comparefunc == GL_GEQUAL)
tgt[0].SrcReg[0].NegateBase = tgt[0].SrcReg[0].NegateBase ^ NEGATE_XYZW;
else
tgt[0].SrcReg[2].NegateBase = tgt[0].SrcReg[2].NegateBase ^ NEGATE_XYZW;
tgt[0].SrcReg[1].NegateBase = tgt[0].SrcReg[1].NegateBase ^ NEGATE_XYZW;
tgt[1].Opcode = OPCODE_CMP;
tgt[1].DstReg = orig_inst->DstReg;
@ -231,14 +217,10 @@ static GLboolean transform_TEX(
tgt = radeonClauseInsertInstructions(context->compiler, context->dest,
context->dest->NumInstructions, 1);
tgt->Opcode = OPCODE_MAD;
tgt->Opcode = OPCODE_MOV;
tgt->DstReg = orig_inst->DstReg;
tgt->SrcReg[0].File = PROGRAM_TEMPORARY;
tgt->SrcReg[0].Index = inst.DstReg.Index;
tgt->SrcReg[1].File = PROGRAM_BUILTIN;
tgt->SrcReg[1].Swizzle = SWIZZLE_1111;
tgt->SrcReg[2].File = PROGRAM_BUILTIN;
tgt->SrcReg[2].Swizzle = SWIZZLE_0000;
}
return GL_TRUE;