Merge branch 'master' into hlsl_path_tracer

Author: keptsecret

71_RayTracingPipeline/CMakeLists.txt

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+include(common RESULT_VARIABLE RES)
+if(NOT RES)
+        message(FATAL_ERROR "common.cmake not found. Should be in {repo_root}/cmake directory")
+endif()
+
+if(NBL_BUILD_IMGUI)
+	set(NBL_INCLUDE_SERACH_DIRECTORIES
+		"${CMAKE_CURRENT_SOURCE_DIR}/include"
+	)
+
+	list(APPEND NBL_LIBRARIES 
+		imtestengine
+		"${NBL_EXT_IMGUI_UI_LIB}"
+	)
+
+	nbl_create_executable_project("" "" "${NBL_INCLUDE_SERACH_DIRECTORIES}" "${NBL_LIBRARIES}" "${NBL_EXECUTABLE_PROJECT_CREATION_PCH_TARGET}")
+
+	if(NBL_EMBED_BUILTIN_RESOURCES)
+		set(_BR_TARGET_ ${EXECUTABLE_NAME}_builtinResourceData)
+		set(RESOURCE_DIR "app_resources")
+
+		get_filename_component(_SEARCH_DIRECTORIES_ "${CMAKE_CURRENT_SOURCE_DIR}" ABSOLUTE)
+		get_filename_component(_OUTPUT_DIRECTORY_SOURCE_ "${CMAKE_CURRENT_BINARY_DIR}/src" ABSOLUTE)
+		get_filename_component(_OUTPUT_DIRECTORY_HEADER_ "${CMAKE_CURRENT_BINARY_DIR}/include" ABSOLUTE)
+
+		file(GLOB_RECURSE BUILTIN_RESOURCE_FILES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}/${RESOURCE_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}/${RESOURCE_DIR}/*")
+		foreach(RES_FILE ${BUILTIN_RESOURCE_FILES})
+			LIST_BUILTIN_RESOURCE(RESOURCES_TO_EMBED "${RES_FILE}")
+		endforeach()
+
+		ADD_CUSTOM_BUILTIN_RESOURCES(${_BR_TARGET_} RESOURCES_TO_EMBED "${_SEARCH_DIRECTORIES_}" "${RESOURCE_DIR}" "nbl::this_example::builtin" "${_OUTPUT_DIRECTORY_HEADER_}" "${_OUTPUT_DIRECTORY_SOURCE_}")
+
+		LINK_BUILTIN_RESOURCES_TO_TARGET(${EXECUTABLE_NAME} ${_BR_TARGET_})
+	endif()
+endif()
+
+

71_RayTracingPipeline/Readme.md

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+# Vulkan Ray Tracing Pipeline Demo
+![finalResult](docs/Images/final_result.png)
+
+The scene is rendered using two ray. The first ray(primary ray) is shoot from the camera/generation shader and the second ray(occlusion ray) is shoot from the closest hit shader.
+To test intersection shader, the acceleration structures consist of two types of geometries. The cubes are stored as triangle geometries while the spheres are stored as procedural geometries.
+To test callable shader, we calculate lighting information of different type in its own callable shader
+
+## Shader Table Layout
+![shaderBindingTable](docs/Images/shader_binding_table.png)
+
+