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panfrost/midgard: Share swizzle compose

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-06-18 15:02:44 -07:00
parent f6fde45d5c
commit a0a34946d8
2 changed files with 30 additions and 8 deletions
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29
src/gallium/drivers/panfrost/midgard/helpers.h
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@ -265,4 +265,33 @@ vector_alu_from_unsigned(unsigned u)
return s;
}
/* Composes two swizzles */
static inline unsigned
pan_compose_swizzle(unsigned left, unsigned right)
{
unsigned out = 0;
for (unsigned c = 0; c < 4; ++c) {
unsigned s = (left >> (2*c)) & 0x3;
unsigned q = (right >> (2*s)) & 0x3;
out |= (q << (2*c));
}
return out;
}
/* Applies a swizzle to an ALU source */
static inline unsigned
vector_alu_apply_swizzle(unsigned src, unsigned swizzle)
{
midgard_vector_alu_src s =
vector_alu_from_unsigned(src);
s.swizzle = pan_compose_swizzle(s.swizzle, swizzle);
return vector_alu_srco_unsigned(s);
}
#endif

9
src/gallium/drivers/panfrost/midgard/midgard_ra.c
View file

@ -92,14 +92,7 @@ static unsigned
compose_swizzle(unsigned swizzle, unsigned mask,
struct phys_reg reg, struct phys_reg dst)
{
unsigned out = 0;
for (unsigned c = 0; c < 4; ++c) {
unsigned s = (swizzle >> (2*c)) & 0x3;
unsigned q = (reg.swizzle >> (2*s)) & 0x3;
out |= (q << (2*c));
}
unsigned out = pan_compose_swizzle(swizzle, reg.swizzle);
/* Based on the register mask, we need to adjust over. E.g if we're
* writing to yz, a base swizzle of xy__ becomes _xy_. Save the