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poly: Fix range used for index unroll bounds checks

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The index buffer pointer is offset by the draw first index, so the
index buffer range needs to be offset by the same.

Reviewed-by: Aitor Camacho <aitor@lunarg.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41568>
This commit is contained in:
squidbus 2026-05-18 04:08:42 -07:00 • committed by Marge Bot
parent 69a5105aad
commit bed2ba22f2
1 changed files with 7 additions and 3 deletions
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10
src/poly/cl/restart.h
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@ -197,6 +197,8 @@ poly_unroll_geometry(global uint32_t *out_draw,
uintptr_t in_ptr = (uintptr_t)(poly_index_buffer(
index_buffer, index_buffer_range_el, in_draw[2], in_index_size_B));
uint in_range_el = poly_index_buffer_range_el(
index_buffer_range_el, in_draw[2]);
uint out_prims = 0;
uint needle = 0;
@ -207,7 +209,7 @@ poly_unroll_geometry(global uint32_t *out_draw,
for (;;) {
uint idx = next_restart + tid;
bool restart =
idx >= count || poly_load_index(in_ptr, index_buffer_range_el, idx,
idx >= count || poly_load_index(in_ptr, in_range_el, idx,
in_index_size_B) == restart_index;
uint next_offs = poly_work_group_first_true(restart, scratch);
@ -228,7 +230,7 @@ poly_unroll_geometry(global uint32_t *out_draw,
uint offset = needle + id;
uint x = ((out_prims_base + i) * per_prim) + vtx;
uint y = poly_load_index(in_ptr, index_buffer_range_el, offset,
uint y = poly_load_index(in_ptr, in_range_el, offset,
in_index_size_B);
poly_store_index(out_ptr, out_index_size_B, x, y);
@ -274,6 +276,8 @@ poly_count_restart_prims(constant uint *in_draw,
uintptr_t in_ptr = (uintptr_t)(poly_index_buffer(
index_buffer, index_buffer_range_el, in_draw[2], index_size_B));
uint in_range_el = poly_index_buffer_range_el(
index_buffer_range_el, in_draw[2]);
uint out_prims = 0;
uint needle = 0;
@ -284,7 +288,7 @@ poly_count_restart_prims(constant uint *in_draw,
for (;;) {
uint idx = next_restart + tid;
bool restart =
idx >= count || poly_load_index(in_ptr, index_buffer_range_el, idx,
idx >= count || poly_load_index(in_ptr, in_range_el, idx,
index_size_B) == restart_index;
uint next_offs = poly_work_group_first_true(restart, scratch);