nir: add sysval for user-clip-planes

For lowering user-clip-planes, we need a way to pass the enabled/used
user-clip-planes in to shader.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

diff --git a/src/glsl/nir/nir_intrinsics.h b/src/glsl/nir/nir_intrinsics.h
index b981df1a71b3f19bbe8fed77493a8c0b829cc5df..70cae4256a3efe77a5e35976f33a014e2859bef5 100644 (file)
--- a/src/glsl/nir/nir_intrinsics.h
+++ b/src/glsl/nir/nir_intrinsics.h
@@ -128,21 +128,22 @@ INTRINSIC(image_size, 0, ARR(), true, 4, 1, 0,
 INTRINSIC(image_samples, 0, ARR(), true, 1, 1, 0,
           NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
 
-#define SYSTEM_VALUE(name, components) \
-   INTRINSIC(load_##name, 0, ARR(), true, components, 0, 0, \
+#define SYSTEM_VALUE(name, components, num_indices) \
+   INTRINSIC(load_##name, 0, ARR(), true, components, 0, num_indices, \
    NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
 
-SYSTEM_VALUE(front_face, 1)
-SYSTEM_VALUE(vertex_id, 1)
-SYSTEM_VALUE(vertex_id_zero_base, 1)
-SYSTEM_VALUE(base_vertex, 1)
-SYSTEM_VALUE(instance_id, 1)
-SYSTEM_VALUE(sample_id, 1)
-SYSTEM_VALUE(sample_pos, 2)
-SYSTEM_VALUE(sample_mask_in, 1)
-SYSTEM_VALUE(invocation_id, 1)
-SYSTEM_VALUE(local_invocation_id, 3)
-SYSTEM_VALUE(work_group_id, 3)
+SYSTEM_VALUE(front_face, 1, 0)
+SYSTEM_VALUE(vertex_id, 1, 0)
+SYSTEM_VALUE(vertex_id_zero_base, 1, 0)
+SYSTEM_VALUE(base_vertex, 1, 0)
+SYSTEM_VALUE(instance_id, 1, 0)
+SYSTEM_VALUE(sample_id, 1, 0)
+SYSTEM_VALUE(sample_pos, 2, 0)
+SYSTEM_VALUE(sample_mask_in, 1, 0)
+SYSTEM_VALUE(invocation_id, 1, 0)
+SYSTEM_VALUE(local_invocation_id, 3, 0)
+SYSTEM_VALUE(work_group_id, 3, 0)
+SYSTEM_VALUE(user_clip_plane, 4, 1) /* const_index[0] is user_clip_plane[idx] */
 
 /*
  * The format of the indices depends on the type of the load.  For uniforms,