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radv/nir_lower_view_index: intrinsic pass

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33655>
This commit is contained in:
Alyssa Rosenzweig 2025-02-20 14:36:49 -05:00 • committed by Marge Bot
parent c025a211f2
commit 88587a3839
1 changed files with 12 additions and 28 deletions
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40
src/amd/vulkan/nir/radv_nir_lower_view_index.c
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@ -19,35 +19,19 @@
* that nir_assign_var_locations() will give the LAYER varying the correct
* driver_location.
*/
static bool
pass(nir_builder *b, nir_intrinsic_instr *intr, void *_)
{
if (intr->intrinsic != nir_intrinsic_load_view_index)
return false;
b->cursor = nir_before_instr(&intr->instr);
nir_def_replace(&intr->def, nir_load_layer_id(b));
return true;
}
bool
radv_nir_lower_view_index(nir_shader *nir)
{
bool progress = false;
nir_function_impl *entry = nir_shader_get_entrypoint(nir);
nir_builder b = nir_builder_create(entry);
nir_foreach_block (block, entry) {
nir_foreach_instr_safe (instr, block) {
if (instr->type != nir_instr_type_intrinsic)
continue;
nir_intrinsic_instr *load = nir_instr_as_intrinsic(instr);
if (load->intrinsic != nir_intrinsic_load_view_index)
continue;
b.cursor = nir_before_instr(instr);
nir_def *def = nir_load_layer_id(&b);
nir_def_rewrite_uses(&load->def, def);
nir_instr_remove(instr);
progress = true;
}
}
if (progress)
nir_metadata_preserve(entry, nir_metadata_control_flow);
else
nir_metadata_preserve(entry, nir_metadata_all);
return progress;
return nir_shader_intrinsics_pass(nir, pass, nir_metadata_control_flow, NULL);
}