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tu: Do not DCE unused output vars used for transform feedback

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Fixes CTS tests:
 dEQP-VK.transform_feedback.simple.multiquery_omit_write_1
 dEQP-VK.transform_feedback.simple.multiquery_omit_write_3

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19020>
This commit is contained in:
Danylo Piliaiev
2022-10-10 16:18:13 +02:00
committed by Marge Bot
parent f6098fb4f5
commit e70a2148e5
1 changed files with 11 additions and 1 deletions
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src/freedreno/vulkan/tu_pipeline.c
+11 -1
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@@ -2694,6 +2694,12 @@ tu_append_executable(struct tu_pipeline *pipeline, struct ir3_shader_variant *va
util_dynarray_append(&pipeline->executables, struct tu_pipeline_executable, exe);
}
static bool
can_remove_out_var(nir_variable *var, void *data)
{
return !var->data.explicit_xfb_buffer && !var->data.explicit_xfb_stride;
}
static void
tu_link_shaders(struct tu_pipeline_builder *builder,
nir_shader **shaders, unsigned shaders_count)
@@ -2716,7 +2722,11 @@ tu_link_shaders(struct tu_pipeline_builder *builder,
NIR_PASS_V(consumer, nir_opt_dce);
}
NIR_PASS_V(producer, nir_remove_dead_variables, nir_var_shader_out, NULL);
const nir_remove_dead_variables_options out_var_opts = {
.can_remove_var = can_remove_out_var,
};
NIR_PASS_V(producer, nir_remove_dead_variables, nir_var_shader_out, &out_var_opts);
NIR_PASS_V(consumer, nir_remove_dead_variables, nir_var_shader_in, NULL);
bool progress = nir_remove_unused_varyings(producer, consumer);