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

[mesa.git] / src / mesa / drivers / dri / r300 / compiler / radeon_dataflow_swizzles.c

diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow_swizzles.c b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow_swizzles.c
index a0f7bd81741ed3da80cc28e4c7de2bbc2b61f9e1..133a9f72ec7a1731e2d320647f575a827734d67e 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow_swizzles.c
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow_swizzles.c
@@ -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) {