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panvk: ensure we don't go over the hardware FAU limit

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All the Malis in existence out there support at most 64 user-supplied FAUs.

Reviewed-by: Olivia Lee <olivia.lee@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35191>
This commit is contained in:
Caterina Shablia 2025-05-28 12:08:23 +00:00 • committed by Marge Bot
parent c37bcd43fc
commit c6f19e87ac
1 changed files with 4 additions and 0 deletions
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4
src/panfrost/vulkan/panvk_vX_shader.c
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@ -692,8 +692,12 @@ lower_load_push_consts(nir_shader *nir, struct panvk_shader *shader)
* blend constants are never loaded from the fragment shader, but might be
* needed in the blend shader. */
shader->fau.sysval_count = BITSET_COUNT(shader->fau.used_sysvals);
/* 32 FAUs (256 bytes) are reserved for API push constants */
assert(shader->fau.sysval_count <= 64 - 32 && "too many sysval FAUs");
shader->fau.total_count =
shader->fau.sysval_count + BITSET_COUNT(shader->fau.used_push_consts);
assert(shader->fau.total_count <= 64 &&
"asking for more FAUs than the hardware has to offer");
if (!progress)
return;