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i965: Fix fp-lit-src-equals-dst.

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We were stomping over the source for the body of the LIT instruction
when doing the MOV of 1.0 to the uninteresting channels.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Eric Anholt 2011-07-07 16:41:20 -07:00
parent be039d296d
commit e3ea5bc08e
1 changed files with 11 additions and 11 deletions
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22
src/mesa/drivers/dri/i965/brw_wm_fp.c
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@ -611,7 +611,17 @@ static void precalc_lit( struct brw_wm_compile *c,
{
struct prog_src_register src0 = inst->SrcReg[0];
struct prog_dst_register dst = inst->DstReg;
if (dst.WriteMask & WRITEMASK_YZ) {
emit_op(c,
OPCODE_LIT,
dst_mask(dst, WRITEMASK_YZ),
inst->SaturateMode,
src0,
src_undef(),
src_undef());
}
if (dst.WriteMask & WRITEMASK_XW) {
struct prog_instruction *swz;
@ -627,16 +637,6 @@ static void precalc_lit( struct brw_wm_compile *c,
/* Avoid letting the negation flag of src0 affect our 1 constant. */
swz->SrcReg[0].Negate = NEGATE_NONE;
}
if (dst.WriteMask & WRITEMASK_YZ) {
emit_op(c,
OPCODE_LIT,
dst_mask(dst, WRITEMASK_YZ),
inst->SaturateMode,
src0,
src_undef(),
src_undef());
}
}