We want this here instead of nir_lower_system_values because for
Vulkan we don't want this lowering to take place.
---
src/mesa/drivers/dri/i965/brw_program.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_program.c
b/src/mesa/drivers/dri/i965/brw_program.c
index 5b168c25e3..84f29e9c7f 100644
--- a/src/mesa/drivers/dri/i965/brw_program.c
+++ b/src/mesa/drivers/dri/i965/brw_program.c
@@ -88,6 +88,12 @@ brw_create_nir(struct brw_context *brw,
}
nir_validate_shader(nir);
+ /* Lower TCS PatchVerticesIn from system value to uniform. This needs to
+ * happen before brw_preprocess_nir, since that will lower system values.
+ */
+ if (stage == MESA_SHADER_TESS_CTRL && brw->screen->devinfo.gen >= 8)
+ brw_nir_lower_tcs_vertices_in_to_uniform(nir);
+
nir = brw_preprocess_nir(brw->screen->compiler, nir);
if (stage == MESA_SHADER_FRAGMENT) {
--
2.11.0
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