Files
mitch030504--Wiicompiled_VR…/aurora-main/cmake/AuroraDawnProvider.cmake
T
Claude 28a25108c6 Run the same-device Vulkan OpenXR backend on desktop Linux
Lepton's Vulkan driver has no external memory or sync fd extensions,
so the Steam Frame gets a native SteamOS build instead. Its backend is
the PC's: OpenXR creates Dawn's own Vulkan instance and device, and the
eyes are copied into the swapchain on Dawn's queue, with nothing shared
between devices.

- openxr_vulkan_win32 and Aurora's vulkan_win32_interop now compile on
  desktop Linux. Dawn links statically there, so the bridge calls the
  patched package's hooks directly, and exists only when the package's
  aurora-dawn.json declares the Vulkan hook ABI (AuroraDawnProvider
  turns AuroraVulkanAbi into AURORA_DAWN_VULKAN_HOOKS); a stock Dawn
  keeps the stubs and VR falls back to the desktop.
- openxr_integration.cpp gains a Linux branch: XR_KHR_vulkan_enable2,
  the timespec clock, refresh rate, performance level, the Frame
  controllers and eye gaze; fragment density maps are requested on
  Linux as on the Quest (fdm.cpp and gpu.cpp, AURORA_FDM=0/1 overrides).
- Controller motion uses XR_KHR_convert_timespec_time on any Linux.
- CMake: Vulkan headers are fetched for Linux OpenXR builds, the
  headset option is MKW_HEADSET on Android and Linux, and Linux aarch64
  builds take MKW_LINUX_CPU (cortex-x4 for the Steam Frame, else native).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019HBRGKTE1GnN2ah8gcZKr3
2026-10-04 09:48:48 +00:00

324 lines
14 KiB
CMake

include_guard(GLOBAL)
# Resolve Dawn/WebGPU dependency based on AURORA_DAWN_PROVIDER and AURORA_DAWN_LINKAGE.
#
# After this module runs:
# - dawn::webgpu_dawn target is available
# - dawn::dawncpp_headers target is available (for tests)
# - DAWN_ENABLE_* backend variables are set for the target platform
# - AURORA_DAWN_IS_SHARED is set to TRUE/FALSE
# When using a non-vendored Dawn, we don't get DAWN_ENABLE_* from its build.
# Infer from the target platform instead.
function(_aurora_dawn_set_platform_backends)
if (WIN32)
set(DAWN_ENABLE_D3D12 ON CACHE INTERNAL "")
# Disable D3D11 because this Aurora fork does not support it.
set(DAWN_ENABLE_D3D11 OFF CACHE INTERNAL "")
set(DAWN_ENABLE_VULKAN ON CACHE INTERNAL "")
set(DAWN_ENABLE_METAL OFF CACHE INTERNAL "")
set(DAWN_ENABLE_DESKTOP_GL OFF CACHE INTERNAL "")
set(DAWN_ENABLE_OPENGLES OFF CACHE INTERNAL "")
set(DAWN_ENABLE_NULL ON CACHE INTERNAL "")
elseif (APPLE)
set(DAWN_ENABLE_D3D12 OFF CACHE INTERNAL "")
set(DAWN_ENABLE_D3D11 OFF CACHE INTERNAL "")
set(DAWN_ENABLE_VULKAN OFF CACHE INTERNAL "")
set(DAWN_ENABLE_METAL ON CACHE INTERNAL "")
set(DAWN_ENABLE_DESKTOP_GL OFF CACHE INTERNAL "")
set(DAWN_ENABLE_OPENGLES OFF CACHE INTERNAL "")
set(DAWN_ENABLE_NULL ON CACHE INTERNAL "")
else () # Linux / other
set(DAWN_ENABLE_D3D12 OFF CACHE INTERNAL "")
set(DAWN_ENABLE_D3D11 OFF CACHE INTERNAL "")
set(DAWN_ENABLE_VULKAN ON CACHE INTERNAL "")
set(DAWN_ENABLE_METAL OFF CACHE INTERNAL "")
set(DAWN_ENABLE_DESKTOP_GL OFF CACHE INTERNAL "")
set(DAWN_ENABLE_OPENGLES OFF CACHE INTERNAL "")
set(DAWN_ENABLE_NULL ON CACHE INTERNAL "")
endif ()
endfunction()
# ── Auto: resolve provider based on platform availability ──
set(_aurora_dawn_provider "${AURORA_DAWN_PROVIDER}")
if (_aurora_dawn_provider STREQUAL "auto")
# Prebuilt Dawn packages available for: windows-{amd64,arm64}, linux-{x86_64,aarch64}, darwin-{arm64,x86_64}
set(_has_package FALSE)
if (WIN32 AND CMAKE_SYSTEM_PROCESSOR MATCHES "^(AMD64|x86_64|ARM64|aarch64)$")
set(_has_package TRUE)
elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND CMAKE_SYSTEM_PROCESSOR MATCHES "^(x86_64|aarch64)$")
set(_has_package TRUE)
elseif (APPLE AND CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm64|x86_64)$")
set(_has_package TRUE)
elseif (CMAKE_SYSTEM_NAME STREQUAL "Android" AND CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64|arm64)$")
set(_has_package TRUE)
endif ()
if (_has_package)
set(_aurora_dawn_provider "package")
else ()
set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL ON)
find_package(Dawn QUIET)
set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL OFF)
if (Dawn_FOUND)
set(_aurora_dawn_provider "system")
else ()
set(_aurora_dawn_provider "vendor")
endif ()
endif ()
set(AURORA_DAWN_PROVIDER "${_aurora_dawn_provider}" CACHE STRING "" FORCE)
message(STATUS "aurora: Dawn auto-resolved provider: ${_aurora_dawn_provider}")
endif ()
if (_aurora_dawn_provider STREQUAL "vendor")
# ── Vendor: FetchContent build from source ──
if (NOT TARGET webgpu_dawn)
message(STATUS "aurora: Fetching Dawn (provider=vendor, linkage=${AURORA_DAWN_LINKAGE})")
if (AURORA_DAWN_LINKAGE STREQUAL "shared")
set(DAWN_BUILD_MONOLITHIC_LIBRARY SHARED CACHE INTERNAL
"Bundle all dawn components into a single shared library.")
else ()
set(DAWN_BUILD_MONOLITHIC_LIBRARY STATIC CACHE INTERNAL
"Bundle all dawn components into a single static library.")
endif ()
set(DAWN_BUILD_SAMPLES OFF CACHE INTERNAL "Disable Dawn sample applications")
set(DAWN_BUILD_BENCHMARKS OFF CACHE INTERNAL "Disable Dawn benchmarks")
set(DAWN_SUPPORTS_GLFW_FOR_WINDOWING OFF CACHE INTERNAL "Disable Dawn GLFW windowing")
set(DAWN_ENABLE_DESKTOP_GL OFF CACHE INTERNAL "Enable compilation of the OpenGL backend")
set(DAWN_ENABLE_OPENGLES OFF CACHE INTERNAL "Enable compilation of the OpenGL ES backend")
set(DAWN_FETCH_DEPENDENCIES ON CACHE INTERNAL
"Use fetch_dawn_dependencies.py as an alternative to using depot_tools")
if (CMAKE_SYSTEM_NAME STREQUAL Linux)
set(DAWN_USE_WAYLAND ON CACHE INTERNAL "Enable support for Wayland surface")
endif ()
set(TINT_BUILD_TESTS OFF CACHE INTERNAL "Build tests")
set(TINT_BUILD_CMD_TOOLS OFF CACHE INTERNAL "Build the Tint command line tools")
if (NOT DEFINED CMAKE_MSVC_RUNTIME_LIBRARY OR CMAKE_MSVC_RUNTIME_LIBRARY MATCHES "DLL$")
set(ABSL_MSVC_STATIC_RUNTIME OFF CACHE INTERNAL "Link static runtime libraries")
else ()
set(ABSL_MSVC_STATIC_RUNTIME ON CACHE INTERNAL "Link static runtime libraries")
endif ()
include(FetchContent)
FetchContent_Declare(dawn
URL "https://github.com/google/dawn/archive/refs/tags/${AURORA_DAWN_VERSION}.tar.gz"
DOWNLOAD_EXTRACT_TIMESTAMP TRUE
EXCLUDE_FROM_ALL
)
FetchContent_MakeAvailable(dawn)
if (NOT TARGET webgpu_dawn)
message(FATAL_ERROR "Failed to make dawn available")
endif ()
else ()
message(STATUS "aurora: Using existing Dawn")
endif ()
if (AURORA_DAWN_LINKAGE STREQUAL "shared")
set(AURORA_DAWN_IS_SHARED TRUE PARENT_SCOPE)
else ()
set(AURORA_DAWN_IS_SHARED FALSE PARENT_SCOPE)
endif ()
elseif (_aurora_dawn_provider STREQUAL "system")
# ── System: find_package(Dawn) ──
message(STATUS "aurora: Using system Dawn (provider=system)")
if (NOT Dawn_FOUND)
set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL ON)
find_package(Dawn REQUIRED)
set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL OFF)
endif ()
if (NOT TARGET dawn::webgpu_dawn)
message(FATAL_ERROR "find_package(Dawn) succeeded but dawn::webgpu_dawn target not found")
endif ()
_aurora_dawn_set_platform_backends()
get_target_property(_dawn_type dawn::webgpu_dawn TYPE)
if (_dawn_type STREQUAL "SHARED_LIBRARY")
set(AURORA_DAWN_IS_SHARED TRUE PARENT_SCOPE)
else ()
set(AURORA_DAWN_IS_SHARED FALSE PARENT_SCOPE)
endif ()
elseif (_aurora_dawn_provider STREQUAL "package")
# ── Package: download prebuilt Dawn install tree ──
if (NOT AURORA_DAWN_PACKAGE_URL)
string(TOLOWER "${CMAKE_SYSTEM_NAME}" _dawn_system)
string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" _dawn_arch)
if (_dawn_system STREQUAL "windows")
if (_dawn_arch STREQUAL "x86_64")
set(_dawn_arch "amd64")
elseif (_dawn_arch STREQUAL "aarch64")
set(_dawn_arch "arm64")
endif ()
endif ()
set(AURORA_DAWN_PACKAGE_URL
"https://github.com/theofficialgman/dawn-build/releases/download/${AURORA_DAWN_VERSION}/dawn-${_dawn_system}-${_dawn_arch}.tar.gz")
# A release asset is mutable: the same tag has already served two different windows-amd64 archives,
# and a cached extraction is never re-verified. Pin the digest for the combinations we ship.
if (NOT AURORA_DAWN_PACKAGE_URL_HASH AND AURORA_DAWN_VERSION STREQUAL "v20260603.191052")
if (_dawn_system STREQUAL "windows" AND _dawn_arch STREQUAL "amd64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=13be9cff8b9b179c42dcd16aeabb6effcc8f0dfdcc14463eda2a5caeda225142")
elseif (_dawn_system STREQUAL "windows" AND _dawn_arch STREQUAL "arm64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=bf2d921110f14a1d6553f673c5597988e66c02af5587e4a1fee167937d247734")
elseif (_dawn_system STREQUAL "linux" AND _dawn_arch STREQUAL "x86_64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=7adcf241bb2a24ec0c576609f2d67203e0e65db9c5a286ca2bbb6281fa644b35")
elseif (_dawn_system STREQUAL "linux" AND _dawn_arch STREQUAL "aarch64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=2415e253d46f91b2d72fc73bf6055fb31b98b67c773dc546e1991b1cf019732f")
elseif (_dawn_system STREQUAL "darwin" AND _dawn_arch STREQUAL "arm64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=0a8ea8eb0159fc0ba1083c52155d9376fb173cffe690b400464a6ad8881bb461")
elseif (_dawn_system STREQUAL "darwin" AND _dawn_arch STREQUAL "x86_64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=5fe2c7a2a8b4cb82acee4af16779a83ae333c7657b9dc1a5008f5fd1f5ad5f80")
elseif (_dawn_system STREQUAL "ios" AND _dawn_arch STREQUAL "arm64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=f97701d26fd1f25bbcc260b4c31736ede134c730c12556029e2470fde967f424")
elseif (_dawn_system STREQUAL "android" AND _dawn_arch STREQUAL "aarch64")
set(AURORA_DAWN_PACKAGE_URL_HASH
"SHA256=0e63e8cbf53551f703f582d1306f4257c0380353f66b53369d96952ce6d9f934")
endif ()
endif ()
endif ()
message(STATUS "aurora: Fetching prebuilt Dawn package from ${AURORA_DAWN_PACKAGE_URL}")
set(_dawn_prebuilt_hash_argument "")
if (AURORA_DAWN_PACKAGE_URL_HASH)
set(_dawn_prebuilt_hash_argument URL_HASH "${AURORA_DAWN_PACKAGE_URL_HASH}")
endif ()
include(FetchContent)
FetchContent_Declare(dawn_prebuilt
URL "${AURORA_DAWN_PACKAGE_URL}"
${_dawn_prebuilt_hash_argument}
DOWNLOAD_EXTRACT_TIMESTAMP TRUE
)
FetchContent_MakeAvailable(dawn_prebuilt)
# Detect package layout: may be nested in a subdirectory
set(_dawn_pkg_dir "${dawn_prebuilt_SOURCE_DIR}")
file(GLOB _dawn_subdirs
"${dawn_prebuilt_SOURCE_DIR}/dawn-*"
"${dawn_prebuilt_SOURCE_DIR}/Dawn-*"
)
foreach (_sd IN LISTS _dawn_subdirs)
if (IS_DIRECTORY "${_sd}")
set(_dawn_pkg_dir "${_sd}")
break()
endif ()
endforeach ()
if (IS_DIRECTORY "${dawn_prebuilt_SOURCE_DIR}/dawn-install")
set(_dawn_pkg_dir "${dawn_prebuilt_SOURCE_DIR}/dawn-install")
endif ()
# Static Dawn packages may link Threads::Threads
find_package(Threads QUIET)
if (CMAKE_SYSTEM_NAME STREQUAL "Android")
# The android-aarch64 package records the absolute path of the liblog.so
# its CI sysroot linked against. Rewrite that to the logical library name
# so the NDK on this machine resolves it.
foreach (_targets_file
"${_dawn_pkg_dir}/lib/cmake/Dawn/DawnTargets.cmake"
"${_dawn_pkg_dir}/lib64/cmake/Dawn/DawnTargets.cmake")
if (EXISTS "${_targets_file}")
file(READ "${_targets_file}" _dawn_targets_text)
string(REGEX REPLACE "[^;\"]*/sysroot/usr/lib/aarch64-linux-android/[0-9]+/liblog\\.so" "log"
_dawn_targets_sanitized "${_dawn_targets_text}")
if (NOT _dawn_targets_sanitized STREQUAL _dawn_targets_text)
file(WRITE "${_targets_file}" "${_dawn_targets_sanitized}")
message(STATUS "aurora: Rewrote the Dawn package's absolute liblog.so reference")
endif ()
endif ()
endforeach ()
endif ()
# Find DawnConfig.cmake in the package
set(_dawn_cmake_found FALSE)
foreach (_cmake_path
"${_dawn_pkg_dir}/lib/cmake/Dawn"
"${_dawn_pkg_dir}/lib64/cmake/Dawn"
"${_dawn_pkg_dir}/cmake/Dawn"
"${_dawn_pkg_dir}/cmake"
)
if (EXISTS "${_cmake_path}/DawnConfig.cmake")
set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL ON)
# NO_CMAKE_FIND_ROOT_PATH: cross toolchains (the Android NDK) root package
# discovery inside their sysroot; the extracted package is a verified host
# path this one lookup must be allowed to see.
find_package(Dawn REQUIRED CONFIG PATHS "${_cmake_path}" NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL OFF)
set(_dawn_cmake_found TRUE)
break()
endif ()
endforeach ()
if (NOT _dawn_cmake_found OR NOT TARGET dawn::webgpu_dawn)
message(FATAL_ERROR
"Dawn package does not contain DawnConfig.cmake.\n"
"Searched: ${_dawn_pkg_dir}/{lib,lib64,cmake}/cmake/Dawn/\n"
"The package must be a Dawn install tree built with DAWN_ENABLE_INSTALL=ON.")
endif ()
# A package built with Aurora's patches (android/Build-QuestDawn.ps1) describes them in
# aurora-dawn.json. Only such a package has the fragment density map ABI
# (include/aurora/dawn_fdm_abi.h); aurora_core compiles its callers against it.
# The Vulkan hook ABI (include/aurora/dawn_vulkan_abi.h) is the other half: a package built by
# Launcher/build-dawn-linux.sh carries it, and the Linux OpenXR backend needs it.
set(AURORA_DAWN_FDM_ABI 0 PARENT_SCOPE)
set(AURORA_DAWN_VULKAN_HOOKS_ABI 0 PARENT_SCOPE)
if (EXISTS "${_dawn_pkg_dir}/aurora-dawn.json")
file(READ "${_dawn_pkg_dir}/aurora-dawn.json" _aurora_dawn_manifest)
string(JSON _aurora_dawn_fdm_abi ERROR_VARIABLE _aurora_dawn_manifest_error
GET "${_aurora_dawn_manifest}" AuroraFdmAbi)
if (NOT _aurora_dawn_manifest_error AND _aurora_dawn_fdm_abi GREATER 0)
set(AURORA_DAWN_FDM_ABI ${_aurora_dawn_fdm_abi} PARENT_SCOPE)
message(STATUS "aurora: Dawn package carries the fragment density map ABI ${_aurora_dawn_fdm_abi}")
endif ()
string(JSON _aurora_dawn_vulkan_abi ERROR_VARIABLE _aurora_dawn_manifest_error
GET "${_aurora_dawn_manifest}" AuroraVulkanAbi)
if (NOT _aurora_dawn_manifest_error AND _aurora_dawn_vulkan_abi GREATER 0)
set(AURORA_DAWN_VULKAN_HOOKS_ABI ${_aurora_dawn_vulkan_abi} PARENT_SCOPE)
message(STATUS "aurora: Dawn package carries the Vulkan hook ABI ${_aurora_dawn_vulkan_abi}")
endif ()
endif ()
_aurora_dawn_set_platform_backends()
get_target_property(_dawn_pkg_type dawn::webgpu_dawn TYPE)
if (_dawn_pkg_type STREQUAL "SHARED_LIBRARY")
set(AURORA_DAWN_IS_SHARED TRUE PARENT_SCOPE)
else ()
set(AURORA_DAWN_IS_SHARED FALSE PARENT_SCOPE)
endif ()
else ()
message(FATAL_ERROR "Invalid AURORA_DAWN_PROVIDER: ${AURORA_DAWN_PROVIDER} "
"(must be auto, vendor, system, or package)")
endif ()
# Ensure dawn::dawncpp_headers target exists (needed by tests).
# When Dawn is vendored, this target is created by Dawn's CMake.
# For package/system providers, create it from the same include dirs.
if (NOT TARGET dawn::dawncpp_headers)
add_library(dawn_dawncpp_headers INTERFACE IMPORTED GLOBAL)
get_target_property(_dawn_inc dawn::webgpu_dawn INTERFACE_INCLUDE_DIRECTORIES)
if (NOT _dawn_inc)
if (TARGET dawn::dawn_public_config)
get_target_property(_dawn_inc dawn::dawn_public_config INTERFACE_INCLUDE_DIRECTORIES)
endif ()
endif ()
if (_dawn_inc)
target_include_directories(dawn_dawncpp_headers INTERFACE ${_dawn_inc})
else ()
target_link_libraries(dawn_dawncpp_headers INTERFACE dawn::webgpu_dawn)
endif ()
add_library(dawn::dawncpp_headers ALIAS dawn_dawncpp_headers)
endif ()