fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-06 07:18:17 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

intel/nir: Generalize lower_tex_compare to split_tex_residency

Browse source 
This splits a single texture-with-residency operation into two halves,
one which returns texture data, and another which queries residency.

We're currently using this only for a shadow sampling workaround,
but the technique is more broadly applicable, if we ever wanted.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40590>
This commit is contained in:
Kenneth Graunke 2026-03-21 00:37:04 -07:00 • committed by Marge Bot
parent dc760104ba
commit 605ef577b3
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/intel/compiler/intel_nir_lower_sparse.c
View file

@ -120,7 +120,7 @@ lower_sparse_image_load(nir_builder *b, nir_intrinsic_instr *intrin)
}
static void
lower_tex_compare(nir_builder *b, nir_tex_instr *tex, int compare_idx)
split_tex_residency(nir_builder *b, nir_tex_instr *tex, int compare_idx)
{
b->cursor = nir_after_instr(&tex->instr);
@ -131,7 +131,8 @@ lower_tex_compare(nir_builder *b, nir_tex_instr *tex, int compare_idx)
nir_builder_instr_insert(b, &sparse_tex->instr);
/* Drop the compare source on the cloned instruction */
nir_tex_instr_remove_src(sparse_tex, compare_idx);
if (compare_idx != -1)
nir_tex_instr_remove_src(sparse_tex, compare_idx);
/* Drop the residency query on the original tex instruction */
tex->is_sparse = false;
@ -177,7 +178,7 @@ lower_sparse_intrinsics(nir_builder *b, nir_instr *instr, void *cb_data)
nir_tex_instr *tex = nir_instr_as_tex(instr);
int comp_idx = nir_tex_instr_src_index(tex, nir_tex_src_comparator);
if (comp_idx != -1 && tex->is_sparse) {
lower_tex_compare(b, tex, comp_idx);
split_tex_residency(b, tex, comp_idx);
return true;
}
return false;