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agx: Lower sampler LOD bias

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G13 does not support sampler descriptor LOD biasing, so this needs to be lowered
to shader code for APIs that require this functionality. Add an option to do
this lowering while doing our other backend texture lowerings. This generates
lod_bias_agx texture instructions which the driver is expected to lower
according to its binding model.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21276>
This commit is contained in:
Alyssa Rosenzweig
2023-02-12 20:21:31 -05:00
committed by Marge Bot
parent 23f271833f
commit 760f367386
6 changed files with 97 additions and 8 deletions
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src/asahi/compiler/agx_compiler.h
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@@ -826,7 +826,7 @@ void agx_compute_liveness(agx_context *ctx);
void agx_liveness_ins_update(BITSET_WORD *live, agx_instr *I);
bool agx_nir_lower_zs_emit(nir_shader *s);
bool agx_nir_lower_texture(nir_shader *s);
bool agx_nir_lower_texture(nir_shader *s, bool support_lod_bias);
bool agx_nir_opt_preamble(nir_shader *s, unsigned *preamble_size);
bool agx_nir_lower_load_mask(nir_shader *shader);
bool agx_nir_lower_address(nir_shader *shader);