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nir/opt_intrinsic: fix sample mask opt with demote

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>

Fixes: d3ce8a7f6b ("nir: optimize gl_SampleMaskIn to gl_HelperInvocation for radeonsi when possible")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32327>
This commit is contained in:
Georg Lehmann 2024-11-25 14:19:39 +01:00 • committed by Marge Bot
parent 22557497ec
commit 3f26e9ca19
1 changed files with 14 additions and 0 deletions
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14
src/compiler/nir/nir_opt_intrinsics.c
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@ -329,6 +329,20 @@ opt_intrinsics_intrin(nir_builder *b, nir_intrinsic_instr *intrin,
if (!nir_scalar_is_const(other) || nir_scalar_as_uint(other))
continue;
nir_cf_node *cf_node = &intrin->instr.block->cf_node;
while (cf_node->parent)
cf_node = cf_node->parent;
nir_function_impl *func_impl = nir_cf_node_as_function(cf_node);
/* We need to insert load_helper before any demote,
* which is only possible in the entry point function
*/
if (func_impl != nir_shader_get_entrypoint(b->shader))
break;
b->cursor = nir_before_impl(func_impl);
nir_def *new_expr = nir_load_helper_invocation(b, 1);
if (alu->op == nir_op_ine)