We currently have a bug where nir_lower_system_values gets called before
nir_lower_var_copies so it will miss any system value uses which come
from a copy_var intrinsic. Moving it to after brw_preprocess_nir fixes
this problem.
Cc: mesa-sta...@lists.freedesktop.org
---
src/intel/vulkan/anv_pipeline.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/intel/vulkan/anv_pipeline.c b/src/intel/vulkan/anv_pipeline.c
index 9645d68..1fd54dc 100644
--- a/src/intel/vulkan/anv_pipeline.c
+++ b/src/intel/vulkan/anv_pipeline.c
@@ -188,13 +188,14 @@ anv_shader_compile_to_nir(struct anv_pipeline *pipeline,
NIR_PASS_V(nir, nir_propagate_invariant);
NIR_PASS_V(nir, nir_lower_io_to_temporaries,
entry_point->impl, true, false);
- NIR_PASS_V(nir, nir_lower_system_values);
/* Vulkan uses the separate-shader linking model */
nir->info.separate_shader = true;
nir = brw_preprocess_nir(compiler, nir);
+ NIR_PASS_V(nir, nir_lower_system_values);
+
if (stage == MESA_SHADER_FRAGMENT)
NIR_PASS_V(nir, anv_nir_lower_input_attachments);
--
2.5.0.400.gff86faf
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