spirv: Add basic plumbing for ray-tracing capabilities

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6479>

src/compiler/shader_info.h

@@ -66,6 +66,9 @@ struct spirv_supported_capabilities {
    bool multiview;
    bool physical_storage_buffer_address;
    bool post_depth_coverage;
+   bool ray_tracing;
+   bool ray_query;
+   bool ray_traversal_primitive_culling;
    bool runtime_descriptor_array;
    bool float_controls;
    bool shader_clock;

src/compiler/spirv/spirv_to_nir.c

@@ -4401,6 +4401,18 @@ vtn_handle_preamble_instruction(struct vtn_builder *b, SpvOp opcode,
          spv_check_supported(intel_subgroup_buffer_block_io, cap);
          break;
 
+      case SpvCapabilityRayTracingProvisionalKHR:
+         spv_check_supported(ray_tracing, cap);
+         break;
+
+      case SpvCapabilityRayQueryProvisionalKHR:
+         spv_check_supported(ray_query, cap);
+         break;
+
+      case SpvCapabilityRayTraversalPrimitiveCullingProvisionalKHR:
+         spv_check_supported(ray_traversal_primitive_culling, cap);
+         break;
+
       default:
          vtn_fail("Unhandled capability: %s (%u)",
                   spirv_capability_to_string(cap), cap);