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pan/bi: Track tex data register swizzles 

So we can pass through a .z component.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7408>
This commit is contained in:
Alyssa Rosenzweig 2020-11-03 08:23:01 -05:00 committed by Marge Bot
parent 1463824319
commit 56bda0fb49
1 changed files with 5 additions and 1 deletions
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6
src/panfrost/bifrost/bifrost_compile.c
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@ -1699,6 +1699,7 @@ emit_texc(bi_context *ctx, nir_tex_instr *instr)
/* 32-bit indices to be allocated as consecutive data registers. */
unsigned dregs[BIFROST_TEX_DREG_COUNT] = { 0 };
unsigned dregs_swiz[BIFROST_TEX_DREG_COUNT] = { 0 };
for (unsigned i = 0; i < instr->num_srcs; ++i) {
unsigned index = pan_src_index(&instr->src[i].src);
@ -1781,8 +1782,10 @@ emit_texc(bi_context *ctx, nir_tex_instr *instr)
for (unsigned i = 0; i < ARRAY_SIZE(dregs); ++i) {
assert(dreg_index < 4);
if (dregs[i])
if (dregs[i]) {
combine.swizzle[dreg_index][0] = dregs_swiz[i];
combine.src[dreg_index++] = dregs[i];
}
}
if (dreg_index > 1) {
@ -1794,6 +1797,7 @@ emit_texc(bi_context *ctx, nir_tex_instr *instr)
tex.swizzle[0][i] = i;
} else if (dreg_index == 1) {
tex.src[0] = combine.src[0];
tex.swizzle[0][0] = combine.swizzle[0][0];
} else {
tex.src[0] = tex.dest;
}