st/nir: Call nir_lower_clip_cull_distance_arrays().

Today, st always sets LowerCombinedClipCullDistance, causing the GLSL IR
lowering to run, giving us vec4[2] arrays.  I would like to disable this
and instead run the NIR lowering so that we get compact float[] arrays
instead.

Calling the new pass is a noop if the GLSL IR pass has already run, so
it's safe to call the pass unconditionally.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

diff --git a/src/mesa/state_tracker/st_glsl_to_nir.cpp b/src/mesa/state_tracker/st_glsl_to_nir.cpp
index d87444aa70cef666bafb1a509e64abffe393e550..5fc87354624f884319d9408acd847e61c405424d 100644 (file)
--- a/src/mesa/state_tracker/st_glsl_to_nir.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_nir.cpp
@@ -742,6 +742,7 @@ st_link_nir(struct gl_context *ctx,
                  st->pipe->screen);
 
       NIR_PASS_V(nir, nir_lower_system_values);
+      NIR_PASS_V(nir, nir_lower_clip_cull_distance_arrays);
 
       nir_shader_gather_info(nir, nir_shader_get_entrypoint(nir));
       shader->Program->info = nir->info;