spv functions outline

Author: keptsecret

include/nbl/builtin/hlsl/spirv_intrinsics/raytracing.hlsl

@@ -0,0 +1,48 @@
+// Copyright (C) 2023 - DevSH Graphics Programming Sp. z O.O.
+// This file is part of the "Nabla Engine".
+// For conditions of distribution and use, see copyright notice in nabla.h
+#ifndef _NBL_BUILTIN_HLSL_SPIRV_INTRINSICS_RAYTRACING_INCLUDED_
+#define _NBL_BUILTIN_HLSL_SPIRV_INTRINSICS_RAYTRACING_INCLUDED_
+
+// #include "nbl/builtin/hlsl/spirv_intrinsics/core.hlsl"
+
+namespace nbl
+{
+namespace hlsl
+{
+namespace spirv
+{
+
+[[vk::ext_capability(spv::CapabilityRayQueryKHR)]]
+[[vk::ext_instruction(spv::OpRayQueryInitializeKHR)]]
+void rayQueryInitializeEXT(/* spv::OpTypeRayQueryKHR function_ptr query, spv::OpTypeAccelerationStructureKHR AS, uint32_t flags, uint32_t cull mask, float3 origin, float32_t tmin, float3 direction, float32_t tmax*/);
+
+[[vk::ext_capability(spv::CapabilityRayQueryKHR)]]
+[[vk::ext_instruction(spv::OpRayQueryProceedKHR)]]
+bool rayQueryProceedEXT(/* spv::OpTypeRayQueryKHR function_ptr query */);
+
+[[vk::ext_capability(spv::CapabilityRayQueryKHR)]]
+[[vk::ext_instruction(spv::OpRayQueryGetIntersectionTypeKHR)]]
+int rayQueryGetIntersectionTypeEXT(/* spv::OpTypeRayQueryKHR function_ptr query, uint32_t intersection (candidate 0, commited 1) */);
+
+[[vk::ext_capability(spv::CapabilityRayQueryKHR)]]
+[[vk::ext_instruction(spv::OpRayQueryGetIntersectionInstanceIdKHR)]]
+int rayQueryGetIntersectionInstanceIdEXT(/* spv::OpTypeRayQueryKHR function_ptr query, uint32_t intersection (candidate 0, commited 1) */);
+
+[[vk::ext_capability(spv::CapabilityRayQueryKHR)]]
+[[vk::ext_instruction(spv::OpRayQueryGetIntersectionPrimitiveIndexKHR)]]
+int rayQueryGetIntersectionPrimitiveIndexEXT(/* spv::OpTypeRayQueryKHR function_ptr query, uint32_t intersection (candidate 0, commited 1) */);
+
+// position fetch for ray tracing uses gl_HitTriangleVertexPositionsEXT -> HitTriangleVertexPositionsKHR decorated OpVariable
+
+[[vk::ext_capability(spv::CapabilityRayQueryPositionFetchKHR)]]
+[[vk::ext_instruction(spv::OpRayQueryGetIntersectionTriangleVertexPositionsKHR)]]   // ray query version
+// get intersection triangle vertex position - gl_HitTriangleVertexPositionsEXT
+// returns 3-array float3 vertex positions
+void rayQueryGetIntersectionTriangleVertexPositionsEXT(/* spv::OpTypeRayQueryKHR function_ptr query, uint32_t intersection (candidate 0, commited 1), out float3 positions[3] */);
+
+}
+}
+}
+
+#endif  // _NBL_BUILTIN_HLSL_SPIRV_INTRINSICS_RAYTRACING_INCLUDED_