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