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anv: assert when number of primitives is higher than max

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Such cases can lead to memory corruptions.

Acked-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20279>
This commit is contained in:
Marcin Ślusarz 2022-12-12 14:29:52 +01:00 committed by Marge Bot
parent d7a1916798
commit 264a0cabd1
1 changed files with 8 additions and 0 deletions
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8
src/intel/vulkan/anv_pipeline.c
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@ -84,6 +84,14 @@ anv_nir_lower_set_vtx_and_prim_count_instr(nir_builder *b, nir_instr *instr, voi
if (intrin->intrinsic != nir_intrinsic_set_vertex_and_primitive_count)
return false;
/* Detect some cases of invalid primitive count. They might lead to URB
* memory corruption, where workgroups overwrite each other output memory.
*/
if (nir_src_is_const(intrin->src[1]) &&
nir_src_as_uint(intrin->src[1]) > b->shader->info.mesh.max_primitives_out) {
assert(!"number of primitives bigger than max specified");
}
struct lower_set_vtx_and_prim_count_state *state = data;
/* this intrinsic should show up only once */
assert(state->primitive_count == NULL);