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pan/bi: Add support for load_ubo

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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/7472>
This commit is contained in:
Boris Brezillon 2020-11-06 09:55:02 +01:00
parent 87e2169cb9
commit 09da82cbdc
1 changed files with 66 additions and 0 deletions
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66
src/panfrost/bifrost/bifrost_compile.c
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@ -438,6 +438,68 @@ bi_emit_ld_uniform(bi_context *ctx, nir_intrinsic_instr *instr)
bi_emit(ctx, ld);
}
static void
bi_emit_ld_ubo(bi_context *ctx, nir_intrinsic_instr *instr)
{
/* nir_lower_uniforms_to_ubo() should have been called, reserving
* UBO #0 for uniforms even if the shaders doesn't have uniforms.
*/
assert(ctx->nir->info.first_ubo_is_default_ubo);
bool offset_is_const = nir_src_is_const(instr->src[1]);
unsigned dyn_offset = pan_src_index(&instr->src[1]);
uint32_t const_offset = 0;
if (nir_src_is_const(instr->src[1]))
const_offset = nir_src_as_uint(instr->src[1]);
if (nir_src_is_const(instr->src[0]) &&
nir_src_as_uint(instr->src[0]) == 0 &&
ctx->sysvals.sysval_count) {
if (offset_is_const) {
const_offset += 16 * ctx->sysvals.sysval_count;
} else {
bi_instruction add = {
.type = BI_IMATH,
.op.imath = BI_IMATH_ADD,
.dest = bi_make_temp(ctx),
.dest_type = nir_type_uint32,
.src = { dyn_offset, BIR_INDEX_CONSTANT | 0, BIR_INDEX_ZERO },
.src_types = { nir_type_uint32, nir_type_uint32, nir_type_uint32 },
.constant.u64 = 16 * ctx->sysvals.sysval_count,
};
bi_emit(ctx, add);
dyn_offset = add.dest;
}
}
bi_instruction ld = {
.type = BI_LOAD_UNIFORM,
.segment = BI_SEGMENT_UBO,
.vector_channels = instr->num_components,
.src_types = { nir_type_uint32, nir_type_uint32 },
.dest = pan_dest_index(&instr->dest),
.dest_type = nir_type_uint | nir_dest_bit_size(instr->dest),
};
if (offset_is_const) {
ld.src[0] = BIR_INDEX_CONSTANT | 0;
ld.constant.u64 |= const_offset;
} else {
ld.src[0] = dyn_offset;
}
if (nir_src_is_const(instr->src[0])) {
ld.src[1] = BIR_INDEX_CONSTANT | 32;
ld.constant.u64 |= nir_src_as_uint(instr->src[0]) << 32;
} else {
ld.src[1] = pan_src_index(&instr->src[0]);
}
bi_emit(ctx, ld);
}
static void
bi_emit_sysval(bi_context *ctx, nir_instr *instr,
unsigned nr_components, unsigned offset)
@ -738,6 +800,10 @@ emit_intrinsic(bi_context *ctx, nir_intrinsic_instr *instr)
bi_emit_ld_uniform(ctx, instr);
break;
case nir_intrinsic_load_ubo:
bi_emit_ld_ubo(ctx, instr);
break;
case nir_intrinsic_load_frag_coord:
bi_emit_ld_frag_coord(ctx, instr);
break;