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nir: Support deref instructions in lower_pos_center 

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand 2018-03-23 07:51:24 -07:00
parent 64057fd333
commit 933c2851ab
1 changed files with 12 additions and 3 deletions
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15
src/compiler/nir/nir_lower_wpos_center.c
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@ -81,7 +81,18 @@ lower_wpos_center_block(nir_builder *b, nir_block *block,
nir_foreach_instr(instr, block) {
if (instr->type == nir_instr_type_intrinsic) {
nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
if (intr->intrinsic == nir_intrinsic_load_var) {
if (intr->intrinsic == nir_intrinsic_load_deref) {
nir_deref_instr *deref = nir_src_as_deref(intr->src[0]);
nir_variable *var = nir_deref_instr_get_variable(deref);
if (var->data.mode == nir_var_shader_in &&
var->data.location == VARYING_SLOT_POS) {
/* gl_FragCoord should not have array/struct derefs: */
assert(deref->deref_type == nir_deref_type_var);
update_fragcoord(b, intr, for_sample_shading);
progress = true;
}
} else if (intr->intrinsic == nir_intrinsic_load_var) {
nir_deref_var *dvar = intr->variables[0];
nir_variable *var = dvar->var;
@ -107,8 +118,6 @@ nir_lower_wpos_center(nir_shader *shader, const bool for_sample_shading)
assert(shader->info.stage == MESA_SHADER_FRAGMENT);
nir_assert_lowered_derefs(shader, nir_lower_load_store_derefs);
nir_foreach_function(function, shader) {
if (function->impl) {
nir_builder_init(&b, function->impl);