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nir/lower_tex: avoid adding invalid LOD to RECT textures

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this is illegal

Fixes: 74ec2b12be ("nir/lower_tex: Rework invalid implicit LOD lowering")

Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15804>
This commit is contained in:
Mike Blumenkrantz 2022-04-07 14:49:07 -04:00 • committed by Marge Bot
parent dff8813246
commit 6cfcf891c1
1 changed files with 2 additions and 0 deletions
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2
src/compiler/nir/nir_lower_tex.c
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@ -1477,8 +1477,10 @@ nir_lower_tex_block(nir_block *block, nir_builder *b,
/* Only fragment and compute (in some cases) support implicit
* derivatives. Lower those opcodes which use implicit derivatives to
* use an explicit LOD of 0.
* But don't touch RECT samplers because they don't have mips.
*/
if (nir_tex_instr_has_implicit_derivative(tex) &&
tex->sampler_dim != GLSL_SAMPLER_DIM_RECT &&
!nir_shader_supports_implicit_lod(b->shader)) {
lower_zero_lod(b, tex);
progress = true;