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r500: Redirect TEX writes to output registers

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While R500 fragment program texture instructions appear to support writemasks,
they cannot write to the output FIFO immediately, so we need to insert a MOV
for these instructions.

This fixes piglit's fp-fragment-position and fp-incomplete-tex tests.
This commit is contained in:
Nicolai Haehnle 2008-07-27 15:14:07 +02:00
parent 85e44fcd51
commit 1bdf5e09a0
1 changed files with 7 additions and 0 deletions
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7
src/mesa/drivers/dri/r300/r500_fragprog.c
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@ -74,6 +74,13 @@ static GLboolean transform_TEX(
inst.DstReg.File = PROGRAM_TEMPORARY;
inst.DstReg.Index = radeonFindFreeTemporary(t);
inst.DstReg.WriteMask = WRITEMASK_XYZW;
} else if (inst.Opcode != OPCODE_KIL && inst.DstReg.File != PROGRAM_TEMPORARY) {
int tempreg = radeonFindFreeTemporary(t);
inst.DstReg.File = PROGRAM_TEMPORARY;
inst.DstReg.Index = tempreg;
inst.DstReg.WriteMask = WRITEMASK_XYZW;
destredirect = GL_TRUE;
}
tgt = radeonAppendInstructions(t->Program, 1);