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broadcom/compiler: implement non-uniform offset on vertex outputs 

Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10723>
This commit is contained in:
Iago Toral Quiroga 2021-05-10 09:02:10 +02:00 committed by Marge Bot
parent 067ad7eccc
commit f71893a942
1 changed files with 20 additions and 18 deletions
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38
src/broadcom/compiler/nir_to_vir.c
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@ -2476,25 +2476,27 @@ emit_store_output_gs(struct v3d_compile *c, nir_intrinsic_instr *instr)
static void
emit_store_output_vs(struct v3d_compile *c, nir_intrinsic_instr *instr)
{
/* XXX perf: Use stvpmv with uniform non-constant offsets and
* stvpmd with non-uniform offsets and enable
* PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR.
*/
assert(c->s->info.stage == MESA_SHADER_VERTEX);
assert(instr->num_components == 1);
assert(c->s->info.stage == MESA_SHADER_VERTEX);
assert(instr->num_components == 1);
uint32_t base = nir_intrinsic_base(instr);
if (nir_src_is_const(instr->src[1])) {
vir_VPM_WRITE(c,
ntq_get_src(c, instr->src[0], 0),
base + nir_src_as_uint(instr->src[1]));
} else {
vir_VPM_WRITE_indirect(c,
ntq_get_src(c, instr->src[0], 0),
vir_ADD(c,
ntq_get_src(c, instr->src[1], 1),
vir_uniform_ui(c, base)));
}
uint32_t base = nir_intrinsic_base(instr);
struct qreg val = ntq_get_src(c, instr->src[0], 0);
if (nir_src_is_const(instr->src[1])) {
vir_VPM_WRITE(c, val,
base + nir_src_as_uint(instr->src[1]));
} else {
struct qreg offset = vir_ADD(c,
ntq_get_src(c, instr->src[1], 1),
vir_uniform_ui(c, base));
bool is_uniform_offset =
!vir_in_nonuniform_control_flow(c) &&
!nir_src_is_divergent(instr->src[1]);
if (is_uniform_offset)
vir_VPM_WRITE_indirect(c, val, offset);
else
vir_STVPMD(c, offset, val);
}
}
static void