anv: new structure to hold surface states

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21645>

src/intel/vulkan/anv_private.h

@@ -214,6 +214,11 @@ struct intel_perf_query_result;
 
 #define ANV_GRAPHICS_SHADER_STAGE_COUNT (MESA_SHADER_MESH + 1)
 
+/* RENDER_SURFACE_STATE is a bit smaller (48b) but since it is aligned to 64
+ * and we can't put anything else there we use 64b.
+ */
+#define ANV_SURFACE_STATE_SIZE (64)
+
 /* For gfx12 we set the streamout buffers using 4 separate commands
  * (3DSTATE_SO_BUFFER_INDEX_*) instead of 3DSTATE_SO_BUFFER. However the layout
  * of the 3DSTATE_SO_BUFFER_INDEX_* commands is identical to that of
@@ -1600,6 +1605,10 @@ struct anv_vue_header {
    float PointWidth;
 };
 
+struct anv_surface_state_data {
+   uint8_t data[ANV_SURFACE_STATE_SIZE];
+};
+
 /** Struct representing a sampled image descriptor
  *
  * This descriptor layout is used for sampled images, bare sampler, and