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implement negation for src operands

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This commit is contained in:
Brian 2007-08-22 09:41:20 -06:00
parent d021381d4e
commit 2154d1c5ac
1 changed files with 18 additions and 5 deletions
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23
src/mesa/pipe/i915simple/i915_fpc_translate.c
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@ -178,11 +178,24 @@ src_vector(struct i915_fp_compile *p,
source->SrcRegister.SwizzleZ,
source->SrcRegister.SwizzleW);
assert(!source->SrcRegister.Negate);
assert(!source->SrcRegisterExtSwz.NegateX);
assert(!source->SrcRegisterExtSwz.NegateY);
assert(!source->SrcRegisterExtSwz.NegateZ);
assert(!source->SrcRegisterExtSwz.NegateW);
/* There's both negate-all-components and per-component negation.
* Try to handle both here.
*/
{
int nx = source->SrcRegisterExtSwz.NegateX;
int ny = source->SrcRegisterExtSwz.NegateY;
int nz = source->SrcRegisterExtSwz.NegateZ;
int nw = source->SrcRegisterExtSwz.NegateW;
if (source->SrcRegister.Negate) {
nx = !nx;
ny = !ny;
nz = !nz;
nw = !nw;
}
src = negate(src, nx, ny, nz, nw);
}
/* no abs() or post-abs negation */
assert(!source->SrcRegisterExtMod.Absolute);
assert(!source->SrcRegisterExtMod.Negate);