# Copyright 2020 The Dawn Authors # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. cmake_minimum_required(VERSION 3.10) # When upgrading to CMake 3.11 we can remove DAWN_DUMMY_FILE because source-less add_library # becomes available. # When upgrading to CMake 3.12 we should add CONFIGURE_DEPENDS to DawnGenerator to rerun CMake in # case any of the generator files changes. We should also remove the CACHE "" FORCE stuff to # override options in third_party dependencies. We can also add the HOMEPAGE_URL # entry to the project `HOMEPAGE_URL "https://dawn.googlesource.com/dawn"` project( Dawn DESCRIPTION "Dawn, a WebGPU implementation" LANGUAGES C CXX ) set_property(GLOBAL PROPERTY USE_FOLDERS ON) if(NOT CMAKE_BUILD_TYPE) message(WARNING "CMAKE_BUILD_TYPE not set, forcing it to Debug") set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Build type (Debug, Release, RelWithDebInfo, MinSizeRel)" FORCE) endif() set(DAWN_BUILD_GEN_DIR "${Dawn_BINARY_DIR}/gen") set(DAWN_GENERATOR_DIR "${Dawn_SOURCE_DIR}/generator") set(DAWN_SRC_DIR "${Dawn_SOURCE_DIR}/src") set(DAWN_INCLUDE_DIR "${DAWN_SRC_DIR}/include") set(DAWN_TEMPLATE_DIR "${DAWN_GENERATOR_DIR}/templates") set(DAWN_DUMMY_FILE "${DAWN_SRC_DIR}/Dummy.cpp") ################################################################################ # Configuration options ################################################################################ # option_if_not_defined(name description default) # Behaves like: # option(name description default) # If a variable is not already defined with the given name, otherwise the # function does nothing. # Simplifies customization by projects that use Dawn as a dependency. function (option_if_not_defined name description default) if(NOT DEFINED ${name}) option(${name} ${description} ${default}) endif() endfunction() # set_if_not_defined(name value description) # Behaves like: # set(${name} ${value} CACHE STRING ${description}) # If a variable is not already defined with the given name, otherwise the # function does nothing. # Simplifies customization by projects that use Dawn as a dependency. function (set_if_not_defined name value description) if(NOT DEFINED ${name}) set(${name} ${value} CACHE STRING ${description}) endif() endfunction() # Default values for the backend-enabling options set(ENABLE_D3D12 OFF) set(ENABLE_METAL OFF) set(ENABLE_OPENGLES OFF) set(ENABLE_DESKTOP_GL OFF) set(ENABLE_VULKAN OFF) set(USE_X11 OFF) set(BUILD_EXAMPLE OFF) if (WIN32) set(ENABLE_D3D12 ON) if (NOT WINDOWS_STORE) # Enable Vulkan in win32 compilation only # since UWP only supports d3d set(ENABLE_VULKAN ON) endif() elseif(APPLE) set(ENABLE_METAL ON) elseif(UNIX) set(ENABLE_OPENGLES ON) set(ENABLE_DESKTOP_GL ON) set(ENABLE_VULKAN ON) set(USE_X11 ON) endif() # GLFW is not supported in UWP if((WIN32 AND NOT WINDOWS_STORE) OR UNIX) set(DAWN_SUPPORTS_GLFW_FOR_WINDOWING ON) endif() # Current examples are depend on GLFW if (DAWN_SUPPORTS_GLFW_FOR_WINDOWING) set(BUILD_EXAMPLE ON) endif() option_if_not_defined(DAWN_ENABLE_D3D12 "Enable compilation of the D3D12 backend" ${ENABLE_D3D12}) option_if_not_defined(DAWN_ENABLE_METAL "Enable compilation of the Metal backend" ${ENABLE_METAL}) option_if_not_defined(DAWN_ENABLE_NULL "Enable compilation of the Null backend" ON) option_if_not_defined(DAWN_ENABLE_DESKTOP_GL "Enable compilation of the OpenGL backend" ${ENABLE_DESKTOP_GL}) option_if_not_defined(DAWN_ENABLE_OPENGLES "Enable compilation of the OpenGL ES backend" ${ENABLE_OPENGLES}) option_if_not_defined(DAWN_ENABLE_VULKAN "Enable compilation of the Vulkan backend" ${ENABLE_VULKAN}) option_if_not_defined(DAWN_ALWAYS_ASSERT "Enable assertions on all build types" OFF) option_if_not_defined(DAWN_USE_X11 "Enable support for X11 surface" ${USE_X11}) option_if_not_defined(DAWN_BUILD_EXAMPLES "Enables building Dawn's exmaples" ${BUILD_EXAMPLE}) option_if_not_defined(DAWN_BUILD_NODE_BINDINGS "Enables building Dawn's NodeJS bindings" OFF) option_if_not_defined(DAWN_ENABLE_PIC "Build with Position-Independent-Code enabled" OFF) set_if_not_defined(DAWN_THIRD_PARTY_DIR "${Dawn_SOURCE_DIR}/third_party" "Directory in which to find third-party dependencies.") # Recommended setting for compability with future abseil releases. set(ABSL_PROPAGATE_CXX_STD ON) set_if_not_defined(DAWN_ABSEIL_DIR "${DAWN_THIRD_PARTY_DIR}/abseil-cpp" "Directory in which to find Abseil") set_if_not_defined(DAWN_GLFW_DIR "${DAWN_THIRD_PARTY_DIR}/glfw" "Directory in which to find GLFW") set_if_not_defined(DAWN_JINJA2_DIR "${DAWN_THIRD_PARTY_DIR}/jinja2" "Directory in which to find Jinja2") set_if_not_defined(DAWN_SPIRV_CROSS_DIR "${DAWN_THIRD_PARTY_DIR}/vulkan-deps/spirv-cross/src" "Directory in which to find SPIRV-Cross") set_if_not_defined(DAWN_SPIRV_HEADERS_DIR "${DAWN_THIRD_PARTY_DIR}/vulkan-deps/spirv-headers/src" "Directory in which to find SPIRV-Headers") set_if_not_defined(DAWN_SPIRV_TOOLS_DIR "${DAWN_THIRD_PARTY_DIR}/vulkan-deps/spirv-tools/src" "Directory in which to find SPIRV-Tools") set_if_not_defined(DAWN_TINT_DIR "${DAWN_THIRD_PARTY_DIR}/tint" "Directory in which to find Tint") # Dependencies for DAWN_BUILD_NODE_BINDINGS set_if_not_defined(NODE_ADDON_API_DIR "${DAWN_THIRD_PARTY_DIR}/node-addon-api" "Directory in which to find node-addon-api") set_if_not_defined(NODE_API_HEADERS_DIR "${DAWN_THIRD_PARTY_DIR}/node-api-headers" "Directory in which to find node-api-headers") set_if_not_defined(WEBGPU_IDL_PATH "${DAWN_THIRD_PARTY_DIR}/gpuweb/webgpu.idl" "Path to the webgpu.idl definition file") set_if_not_defined(GO_EXECUTABLE "go" "Golang executable for running the IDL generator") # Much of the backend code is shared among desktop OpenGL and OpenGL ES if (${DAWN_ENABLE_DESKTOP_GL} OR ${DAWN_ENABLE_OPENGLES}) set(DAWN_ENABLE_OPENGL ON) endif() # OpenGL backend requires SPIRV-Cross set(DAWN_REQUIRES_SPIRV_CROSS OFF) if (DAWN_ENABLE_OPENGL) set(DAWN_REQUIRES_SPIRV_CROSS ON) endif() if(DAWN_ENABLE_PIC) set(CMAKE_POSITION_INDEPENDENT_CODE ON) endif() ################################################################################ # Dawn's public and internal "configs" ################################################################################ # The public config contains only the include paths for the Dawn headers. add_library(dawn_public_config INTERFACE) target_include_directories(dawn_public_config INTERFACE "${DAWN_SRC_DIR}/include" "${DAWN_BUILD_GEN_DIR}/src/include" ) # The internal config conatins additional path but includes the dawn_public_config include paths add_library(dawn_internal_config INTERFACE) target_include_directories(dawn_internal_config INTERFACE "${DAWN_SRC_DIR}" "${DAWN_BUILD_GEN_DIR}/src" ) target_link_libraries(dawn_internal_config INTERFACE dawn_public_config) # Compile definitions for the internal config if (DAWN_ALWAYS_ASSERT OR $<CONFIG:Debug>) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_ASSERTS") endif() if (DAWN_ENABLE_D3D12) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_BACKEND_D3D12") endif() if (DAWN_ENABLE_METAL) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_BACKEND_METAL") endif() if (DAWN_ENABLE_NULL) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_BACKEND_NULL") endif() if (DAWN_ENABLE_DESKTOP_GL) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_BACKEND_DESKTOP_GL") endif() if (DAWN_ENABLE_OPENGLES) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_BACKEND_OPENGLES") endif() if (DAWN_ENABLE_OPENGL) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_BACKEND_OPENGL") endif() if (DAWN_ENABLE_VULKAN) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_ENABLE_BACKEND_VULKAN") endif() if (DAWN_USE_X11) target_compile_definitions(dawn_internal_config INTERFACE "DAWN_USE_X11") endif() if (WIN32) target_compile_definitions(dawn_internal_config INTERFACE "NOMINMAX" "WIN32_LEAN_AND_MEAN") endif() set(CMAKE_CXX_STANDARD "17") ################################################################################ # Run on all subdirectories ################################################################################ add_subdirectory(third_party) add_subdirectory(src/common) add_subdirectory(generator) add_subdirectory(src/dawn) add_subdirectory(src/dawn_platform) add_subdirectory(src/dawn_native) add_subdirectory(src/dawn_wire) # TODO(dawn:269): Remove once the implementation-based swapchains are removed. add_subdirectory(src/utils) if (DAWN_BUILD_EXAMPLES) #TODO(dawn:269): Add this once implementation-based swapchains are removed. #add_subdirectory(src/utils) add_subdirectory(examples) endif() if (DAWN_BUILD_NODE_BINDINGS) set(NODE_BINDING_DEPS ${NODE_ADDON_API_DIR} ${NODE_API_HEADERS_DIR} ${WEBGPU_IDL_PATH} ) foreach(DEP ${NODE_BINDING_DEPS}) if (NOT EXISTS ${DEP}) message(FATAL_ERROR "DAWN_BUILD_NODE_BINDINGS requires missing dependency '${DEP}'\n" "Please follow the 'Fetch dependencies' instructions at:\n" "./src/dawn_node/README.md" ) endif() endforeach() if (NOT CMAKE_POSITION_INDEPENDENT_CODE) message(FATAL_ERROR "DAWN_BUILD_NODE_BINDINGS requires building with DAWN_ENABLE_PIC") endif() add_subdirectory(src/dawn_node) endif()