OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pan/bi: Special-case load_input for blend shaders

Browse Source 
Blend shaders are passed blend inputs through r0-r3. Let's emit a MOV
from those register when we see a load_input intrinsic.

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
2020-10-14 14:11:52 +02:00
parent 0d40460757
commit 685d45ff93
1 changed files with 35 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
src/panfrost/bifrost/bifrost_compile.c
View File

@@ -165,6 +165,38 @@ bi_emit_ld_vary(bi_context *ctx, nir_intrinsic_instr *instr)
bi_emit(ctx, ins);
}
static void
bi_emit_ld_blend_input(bi_context *ctx, nir_intrinsic_instr *instr)
{
ASSERTED nir_io_semantics sem = nir_intrinsic_io_semantics(instr);
/* We don't support dual-source blending yet. */
assert(sem.location == VARYING_SLOT_COL0);
bi_instruction ins = {
.type = BI_COMBINE,
.dest_type = nir_type_uint32,
.dest = pan_dest_index(&instr->dest),
.src_types = {
nir_type_uint32, nir_type_uint32,
nir_type_uint32, nir_type_uint32,
},
/* Source color is passed through r0-r3.
* TODO: We should probably find a way to avoid this
* combine/mov and use r0-r3 directly.
*/
.src = {
BIR_INDEX_REGISTER | 0,
BIR_INDEX_REGISTER | 1,
BIR_INDEX_REGISTER | 2,
BIR_INDEX_REGISTER | 3,
},
};
bi_emit(ctx, ins);
}
static void
bi_emit_frag_out(bi_context *ctx, nir_intrinsic_instr *instr)
{
@@ -512,7 +544,9 @@ emit_intrinsic(bi_context *ctx, nir_intrinsic_instr *instr)
break;
case nir_intrinsic_load_interpolated_input:
case nir_intrinsic_load_input:
if (ctx->stage == MESA_SHADER_FRAGMENT)
if (ctx->is_blend)
bi_emit_ld_blend_input(ctx, instr);
else if (ctx->stage == MESA_SHADER_FRAGMENT)
bi_emit_ld_vary(ctx, instr);
else if (ctx->stage == MESA_SHADER_VERTEX)
bi_emit(ctx, bi_load_with_r61(BI_LOAD_ATTR, instr));