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pan/bi: Implement load_input for vertex shaders

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Corresponds to a single LD_ATTR instruction, easy enough.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4097>
This commit is contained in:
Alyssa Rosenzweig
2020-03-06 09:33:52 -05:00
committed by Marge Bot
parent dabb6c6b9f
commit 59b476e11a
1 changed files with 36 additions and 1 deletions
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src/panfrost/bifrost/bifrost_compile.c
+36 -1
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@@ -113,6 +113,33 @@ bi_emit_frag_out(bi_context *ctx, nir_intrinsic_instr *instr)
bi_schedule_barrier(ctx);
}
static struct bi_load
bi_direct_load_for_instr(nir_intrinsic_instr *instr)
{
nir_src *offset = nir_get_io_offset_src(instr);
assert(nir_src_is_const(*offset)); /* no indirects */
struct bi_load load = {
.location = nir_intrinsic_base(instr) + nir_src_as_uint(*offset),
.channels = instr->num_components
};
return load;
}
static void
bi_emit_ld_attr(bi_context *ctx, nir_intrinsic_instr *instr)
{
bi_instruction load = {
.type = BI_LOAD_ATTR,
.load = bi_direct_load_for_instr(instr),
.dest = bir_dest_index(&instr->dest),
.dest_type = nir_intrinsic_type(instr)
};
bi_emit(ctx, load);
}
static void
emit_intrinsic(bi_context *ctx, nir_intrinsic_instr *instr)
{
@@ -122,8 +149,16 @@ emit_intrinsic(bi_context *ctx, nir_intrinsic_instr *instr)
/* stub */
break;
case nir_intrinsic_load_interpolated_input:
bi_emit_ld_vary(ctx, instr);
case nir_intrinsic_load_input:
if (ctx->stage == MESA_SHADER_FRAGMENT)
bi_emit_ld_vary(ctx, instr);
else if (ctx->stage == MESA_SHADER_VERTEX)
bi_emit_ld_attr(ctx, instr);
else {
unreachable("Unsupported shader stage");
}
break;
case nir_intrinsic_store_output:
if (ctx->stage == MESA_SHADER_FRAGMENT)
bi_emit_frag_out(ctx, instr);