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agx: Implement nir_op_txb

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Like explicit LODs, biases must be 16-bit, so add a lowering rule for
this. With the LOD mode selection updated for txb, we can then ingest
biases like explicit LODs and allowlist txb. Passes:

dEQP-GLES2.functional.shaders.texture_functions.fragment.texture2d_bias
dEQP-GLES2.functional.texture.mipmap.2d.bias.*

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14899>
This commit is contained in:
Alyssa Rosenzweig 2022-01-18 09:48:36 -05:00 • committed by Marge Bot
parent e2903f66ec
commit b459473bb9
1 changed files with 4 additions and 2 deletions
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6
src/asahi/compiler/agx_compile.c
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@ -801,6 +801,7 @@ agx_emit_tex(agx_builder *b, nir_tex_instr *instr)
switch (instr->op) {
case nir_texop_tex:
case nir_texop_txl:
case nir_texop_txb:
break;
default:
unreachable("Unhandled texture op");
@ -821,10 +822,10 @@ agx_emit_tex(agx_builder *b, nir_tex_instr *instr)
break;
case nir_tex_src_lod:
case nir_tex_src_bias:
lod = index;
break;
case nir_tex_src_bias:
case nir_tex_src_ms_index:
case nir_tex_src_offset:
case nir_tex_src_comparator:
@ -1481,7 +1482,8 @@ agx_compile_shader_nir(nir_shader *nir,
};
nir_tex_src_type_constraints tex_constraints = {
[nir_tex_src_lod] = { true, 16 }
[nir_tex_src_lod] = { true, 16 },
[nir_tex_src_bias] = { true, 16 },
};
NIR_PASS_V(nir, nir_lower_tex, &lower_tex_options);