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CMakeLists.txt
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#
# Copyright (c) 2019-2023, NVIDIA CORPORATION. All rights reserved.
#
# NVIDIA CORPORATION and its licensors retain all intellectual property
# and proprietary rights in and to this software, related documentation
# and any modifications thereto. Any use, reproduction, disclosure or
# distribution of this software and related documentation without an express
# license agreement from NVIDIA CORPORATION is strictly prohibited.
#
cmake_minimum_required(VERSION 3.10)
project(RTXGI)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS ON)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "bin")
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
# Helper to download and unzip a package from a URL
# Uses a zero-length file to identify the version of the package
function(CheckAndDownloadPackage NAME VERSION LOCAL_PATH URL)
# Do we already have the correct version?
if(NOT EXISTS ${LOCAL_PATH}/${VERSION}.ver)
# Was there a previous version that we need to delete?
if(EXISTS ${LOCAL_PATH})
message(STATUS "Deleting old " ${NAME})
file(REMOVE_RECURSE ${LOCAL_PATH})
endif()
message(STATUS "Obtaining " ${NAME} " " ${VERSION})
file(DOWNLOAD ${URL} ${LOCAL_PATH}.zip)
message(STATUS "Extracting " ${NAME})
file(ARCHIVE_EXTRACT INPUT ${LOCAL_PATH}.zip DESTINATION ${LOCAL_PATH})
file(REMOVE ${LOCAL_PATH}.zip)
# Create an empty file so we know which version we have
file(WRITE ${LOCAL_PATH}/${VERSION}.ver)
endif()
endfunction()
# Add Vulkan headers on ARM since there is no official ARM Vulkan SDK
if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64")
add_subdirectory(thirdparty/Vulkan-Headers)
set(RTXGI_API_VULKAN_SDK "1")
set(Vulkan_INCLUDE_DIR "${CMAKE_SOURCE_DIR}/thirdparty/Vulkan-Headers/include/")
endif()
# Download D3D Agility SDK and DXC binaries
if(WIN32)
CheckAndDownloadPackage("Agility SDK" "v1.606.3" ${CMAKE_CURRENT_SOURCE_DIR}/external/agilitysdk https://www.nuget.org/api/v2/package/Microsoft.Direct3D.D3D12/1.606.3)
CheckAndDownloadPackage("DXC" "v1.7.2308" ${CMAKE_CURRENT_SOURCE_DIR}/external/dxc https://github.com/microsoft/DirectXShaderCompiler/releases/download/v1.7.2308/dxc_2023_08_14.zip)
elseif(UNIX AND NOT APPLE)
CheckAndDownloadPackage("DXC" "v1.7.2308" ${CMAKE_CURRENT_SOURCE_DIR}/external/dxc https://github.com/microsoft/DirectXShaderCompiler/releases/download/v1.7.2308/linux_dxc_2023_08_14.x86_64.tar.gz)
endif()
# SDK
add_subdirectory(rtxgi-sdk)
# Samples
option(RTXGI_BUILD_SAMPLES "Include the RTXGI sample application(s)" ON)
if(RTXGI_BUILD_SAMPLES)
# GLFW3
option(GLFW_BUILD_EXAMPLES "" OFF)
option(GLFW_BUILD_TESTS "" OFF)
option(GLFW_BUILD_DOCS "" OFF)
option(GLFW_INSTALL "" OFF)
add_subdirectory(thirdparty/glfw)
set_target_properties(glfw PROPERTIES FOLDER "Thirdparty/GLFW3")
set_target_properties(update_mappings PROPERTIES FOLDER "Thirdparty/GLFW3")
# TinyGLTF
option(TINYGLTF_BUILD_LOADER_EXAMPLE "" OFF)
add_subdirectory(thirdparty/tinygltf)
target_compile_definitions(tinygltf PUBLIC _CRT_SECURE_NO_WARNINGS) # suppress the sprintf CRT warnings
set_target_properties(tinygltf PROPERTIES FOLDER "Thirdparty/")
# Samples
add_subdirectory(samples)
# Set the default project. If D3D is an option, set it as default.
if(RTXGI_API_D3D12_ENABLE)
set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT TestHarness-D3D12)
elseif(NOT RTXGI_API_D3D12_ENABLE AND RTXGI_API_VULKAN_ENABLE)
set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT TestHarness-VK)
endif()
endif()