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r300/compiler: fix swizzle lowering with a presubtract source operand

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If a source operand has a non-native swizzle (e.g. the KIL instruction
cannot have a swizzle other than .xyzw), the lowering pass uses one or more
MOV instructions to move the operand to an intermediate temporary with
native swizzles.

This commit fixes that the presubtract information was lost during
the lowering.

NOTE: This is a candidate for both the 7.9 and 7.10 branches.
This commit is contained in:
Marek Olšák 2010-12-11 13:22:19 +01:00
parent 9e1fbd3d6e
commit d0990db6bd
1 changed files with 1 additions and 0 deletions
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src/mesa/drivers/dri/r300/compiler/radeon_dataflow_swizzles.c
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@ -56,6 +56,7 @@ static void rewrite_source(struct radeon_compiler * c,
mov->U.I.DstReg.Index = tempreg;
mov->U.I.DstReg.WriteMask = split.Phase[phase];
mov->U.I.SrcReg[0] = inst->U.I.SrcReg[src];
mov->U.I.PreSub = inst->U.I.PreSub;
phase_refmask = 0;
for(unsigned int chan = 0; chan < 4; ++chan) {