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r300/compiler: add a function for swizzling a mask

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This commit is contained in:
Marek Olšák
2010-11-25 04:34:31 +01:00
parent 7c29446232
commit ea2f56b490
2 changed files with 15 additions and 6 deletions
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src/mesa/drivers/dri/r300/compiler/radeon_optimize.c
+1 -6
View File
@@ -54,12 +54,7 @@ static struct rc_src_register chain_srcregs(struct rc_src_register outer, struct
combine.Negate = outer.Negate;
} else {
combine.Abs = inner.Abs;
combine.Negate = 0;
for(unsigned int chan = 0; chan < 4; ++chan) {
unsigned int swz = GET_SWZ(outer.Swizzle, chan);
if (swz < 4)
combine.Negate |= GET_BIT(inner.Negate, swz) << chan;
}
combine.Negate = swizzle_mask(outer.Swizzle, inner.Negate);
combine.Negate ^= outer.Negate;
}
combine.Swizzle = combine_swizzles(inner.Swizzle, outer.Swizzle);
src/mesa/drivers/dri/r300/compiler/radeon_program.h
+14
View File
@@ -204,6 +204,20 @@ static inline rc_swizzle rc_mask_to_swizzle(unsigned int mask)
}
return RC_SWIZZLE_UNUSED;
}
/* Reorder mask bits according to swizzle. */
static inline unsigned swizzle_mask(unsigned swizzle, unsigned mask)
{
unsigned ret = 0;
for (unsigned chan = 0; chan < 4; ++chan) {
unsigned swz = GET_SWZ(swizzle, chan);
if (swz < 4)
ret |= GET_BIT(mask, swz) << chan;
}
return ret;
}
struct rc_src_register lmul_swizzle(unsigned int swizzle, struct rc_src_register srcreg);
static inline void reset_srcreg(struct rc_src_register* reg)