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v3d: Use nir_shader_lower_instructions() for txf_ms lowering.

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Cuts out a bunch of boilerplate.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Eric Anholt 2019-07-16 10:55:56 -07:00
parent 251c64a53d
commit cdc359c58e
1 changed files with 16 additions and 26 deletions
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42
src/broadcom/compiler/v3d_nir_lower_txf_ms.c
View file

@ -34,12 +34,10 @@
#define V3D_MAX_SAMPLES 4
static void
vc4_nir_lower_txf_ms_instr(struct v3d_compile *c, nir_builder *b,
nir_tex_instr *instr)
static nir_ssa_def *
v3d_nir_lower_txf_ms_instr(nir_builder *b, nir_instr *in_instr, void *data)
{
if (instr->op != nir_texop_txf_ms)
return;
nir_tex_instr *instr = nir_instr_as_tex(in_instr);
b->cursor = nir_before_instr(&instr->instr);
@ -66,30 +64,22 @@ vc4_nir_lower_txf_ms_instr(struct v3d_compile *c, nir_builder *b,
nir_tex_instr_remove_src(instr, sample_index);
instr->op = nir_texop_txf;
instr->sampler_dim = GLSL_SAMPLER_DIM_2D;
return NIR_LOWER_INSTR_PROGRESS;
}
static bool
v3d_nir_lower_txf_ms_filter(const nir_instr *instr, const void *data)
{
return (instr->type == nir_instr_type_tex &&
nir_instr_as_tex(instr)->op == nir_texop_txf_ms);
}
void
v3d_nir_lower_txf_ms(nir_shader *s, struct v3d_compile *c)
{
nir_foreach_function(function, s) {
if (!function->impl)
continue;
nir_builder b;
nir_builder_init(&b, function->impl);
nir_foreach_block(block, function->impl) {
nir_foreach_instr_safe(instr, block) {
if (instr->type != nir_instr_type_tex)
continue;
vc4_nir_lower_txf_ms_instr(c, &b,
nir_instr_as_tex(instr));
}
}
nir_metadata_preserve(function->impl,
nir_metadata_block_index |
nir_metadata_dominance);
}
nir_shader_lower_instructions(s,
v3d_nir_lower_txf_ms_filter,
v3d_nir_lower_txf_ms_instr,
NULL);
}