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turnip: use nir_opt_copy_prop_vars

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Avoids getting a "load_output" in a case like this:

   gl_Position = ubuf.MVP * ubuf.position[gl_VertexIndex];
   frag_pos = gl_Position.xyz;

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Acked-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Jonathan Marek 2019-09-26 00:30:22 -04:00
parent b54f9e9e9e
commit ee4fa15a86
1 changed files with 2 additions and 0 deletions
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2
src/freedreno/vulkan/tu_shader.c
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@ -302,6 +302,8 @@ tu_shader_create(struct tu_device *dev,
nir_assign_var_locations(&nir->uniforms, &nir->num_uniforms,
ir3_glsl_type_size);
NIR_PASS_V(nir, nir_opt_copy_prop_vars);
NIR_PASS_V(nir, nir_lower_system_values);
NIR_PASS_V(nir, nir_lower_frexp);