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pan/bi: Implement BLEND by builder 

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8135>
This commit is contained in:
Alyssa Rosenzweig 2020-12-09 08:42:26 -05:00 committed by Marge Bot
parent 20bfe9ee05
commit 3c5097bbfd
1 changed files with 25 additions and 0 deletions
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25
src/panfrost/bifrost/bifrost_compile.c
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@ -459,6 +459,31 @@ bi_emit_atest(bi_context *ctx, unsigned rgba, nir_alu_type T)
bi_emit(ctx, ins);
}
static void
bi_emit_blend_op(bi_builder *b, bi_index rgba, nir_alu_type T, unsigned rt)
{
if (b->shader->is_blend) {
/* Blend descriptor comes from the compile inputs */
/* Put the result in r0 */
bi_blend_to(b, bi_register(0), rgba,
bi_register(60) /* TODO RA */,
bi_imm_u32(b->shader->blend_desc & 0xffffffff),
bi_imm_u32(b->shader->blend_desc >> 32));
} else {
/* Blend descriptor comes from the FAU RAM. By convention, the
* return address is stored in r48 and will be used by the
* blend shader to jump back to the fragment shader after */
bi_blend_to(b, bi_register(48), rgba,
bi_register(60) /* TODO RA */,
bi_fau(BIR_FAU_BLEND_0 + rt, false),
bi_fau(BIR_FAU_BLEND_0 + rt, true));
}
assert(rt < 8);
assert(b->shader->blend_types);
b->shader->blend_types[rt] = T;
}
static void
bi_emit_blend(bi_context *ctx, unsigned rgba, nir_alu_type T, unsigned rt)
{