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pan/bi: Add support for load_blend_const_color_{r,g,b,a}_float 

Needed for blend shaders.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7151>
This commit is contained in:
Boris Brezillon 2020-10-12 11:25:25 +02:00
parent 16179c89d1
commit 1a1d9cce46
1 changed files with 34 additions and 0 deletions
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34
src/panfrost/bifrost/bifrost_compile.c
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@ -409,6 +409,33 @@ bi_emit_discard_if(bi_context *ctx, nir_intrinsic_instr *instr)
bi_emit(ctx, discard);
}
static void
bi_emit_blend_const(bi_context *ctx, nir_intrinsic_instr *instr)
{
assert(ctx->is_blend);
unsigned comp;
switch (instr->intrinsic) {
case nir_intrinsic_load_blend_const_color_r_float: comp = 0; break;
case nir_intrinsic_load_blend_const_color_g_float: comp = 1; break;
case nir_intrinsic_load_blend_const_color_b_float: comp = 2; break;
case nir_intrinsic_load_blend_const_color_a_float: comp = 3; break;
default: unreachable("Invalid load blend constant intrinsic");
}
bi_instruction move = {
.type = BI_MOV,
.dest = pan_dest_index(&instr->dest),
.dest_type = nir_type_uint32,
.src = { BIR_INDEX_CONSTANT },
.src_types = { nir_type_uint32 },
};
memcpy(&move.constant.u32, &ctx->blend_constants[comp], sizeof(float));
bi_emit(ctx, move);
}
static void
emit_intrinsic(bi_context *ctx, nir_intrinsic_instr *instr)
{
@ -468,6 +495,13 @@ emit_intrinsic(bi_context *ctx, nir_intrinsic_instr *instr)
bi_emit_sysval(ctx, &instr->instr, 3, 0);
break;
case nir_intrinsic_load_blend_const_color_r_float:
case nir_intrinsic_load_blend_const_color_g_float:
case nir_intrinsic_load_blend_const_color_b_float:
case nir_intrinsic_load_blend_const_color_a_float:
bi_emit_blend_const(ctx, instr);
break;
default:
unreachable("Unknown intrinsic");
break;