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nir: handle mismatched bias/lod bitsizes

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the sampler lod bias lowering uses fp16 for perf on AGX.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34507>
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Alyssa Rosenzweig 2025-04-14 13:22:31 -04:00 • committed by Marge Bot
parent 2e15b42eec
commit 9de7ea875d
1 changed files with 1 additions and 1 deletions
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2
src/compiler/nir/nir_lower_tex.c
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@ -322,7 +322,7 @@ lower_lod(nir_builder *b, nir_tex_instr *tex, nir_def *lod)
/* If we have a bias, add it in */
nir_def *bias = nir_steal_tex_src(tex, nir_tex_src_bias);
if (bias)
lod = nir_fadd(b, lod, bias);
lod = nir_fadd(b, lod, nir_f2fN(b, bias, lod->bit_size));
/* If we have a minimum LOD, clamp LOD accordingly */
nir_def *min_lod = nir_steal_tex_src(tex, nir_tex_src_min_lod);