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etnaviv: nir: Legalize txf lod src

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The LOD must be a float, unlike the GLSL function, which expects an integer.

Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34685>
This commit is contained in:
Christian Gmeiner 2025-04-18 23:37:19 +02:00
parent da90fca609
commit eefe486533
1 changed files with 25 additions and 0 deletions
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25
src/gallium/drivers/etnaviv/etnaviv_nir_lower_texture.c
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@ -26,6 +26,28 @@ lower_txs(nir_builder *b, nir_instr *instr, UNUSED void *data)
return true;
}
static bool
legalize_txf_lod(nir_builder *b, nir_instr *instr, UNUSED void *data)
{
if (instr->type != nir_instr_type_tex)
return false;
nir_tex_instr *tex = nir_instr_as_tex(instr);
if (tex->op != nir_texop_txf)
return false;
b->cursor = nir_before_instr(instr);
int lod_index = nir_tex_instr_src_index(tex, nir_tex_src_lod);
assert(lod_index >= 0);
nir_def *lod = tex->src[lod_index].src.ssa;
nir_src_rewrite(&tex->src[lod_index].src, nir_i2f32(b, lod));
return true;
}
bool
etna_nir_lower_texture(nir_shader *s, struct etna_shader_key *key)
{
@ -48,5 +70,8 @@ etna_nir_lower_texture(nir_shader *s, struct etna_shader_key *key)
NIR_PASS(progress, s, nir_shader_instructions_pass, lower_txs,
nir_metadata_control_flow, NULL);
NIR_PASS(progress, s, nir_shader_instructions_pass, legalize_txf_lod,
nir_metadata_control_flow, NULL);
return progress;
}