Windows: Add ARM64 support

* Only works on machines with a Qualcomm Snapdragon 8cx Gen3 or above.
  Older generation devices are not and will not be supported due to
  some driver issues
* Requires VS2022 for building.
* Uses new MSVC preprocessor for sse2neon compatibility.
* SIMD is not enabled, waiting on conversion of blenlib to C++.

Ref #119126

Pull Request: https://projects.blender.org/blender/blender/pulls/117036

build_files/cmake/config/blender_release.cmake

@@ -87,12 +87,17 @@ endif()
 if(NOT APPLE)
   set(WITH_XR_OPENXR              ON  CACHE BOOL "" FORCE)
 
-  set(WITH_CYCLES_DEVICE_OPTIX    ON  CACHE BOOL "" FORCE)
-  set(WITH_CYCLES_CUDA_BINARIES   ON  CACHE BOOL "" FORCE)
-  set(WITH_CYCLES_HIP_BINARIES    ON  CACHE BOOL "" FORCE)
-  set(WITH_CYCLES_DEVICE_ONEAPI   ON  CACHE BOOL "" FORCE)
-  set(WITH_CYCLES_ONEAPI_BINARIES ON  CACHE BOOL "" FORCE)
+  # Can't use CMAKE_SYSTEM_PROCESSOR here as it's not set yet,
+  # so fall back to checking the env for vcvarsall's VSCMD_ARG_TGT_ARCH
+  if(NOT (WIN32 AND "$ENV{VSCMD_ARG_TGT_ARCH}" STREQUAL "arm64"))
+    set(WITH_CYCLES_DEVICE_OPTIX    ON  CACHE BOOL "" FORCE)
+    set(WITH_CYCLES_CUDA_BINARIES   ON  CACHE BOOL "" FORCE)
+    set(WITH_CYCLES_HIP_BINARIES    ON  CACHE BOOL "" FORCE)
+    set(WITH_CYCLES_DEVICE_ONEAPI   ON  CACHE BOOL "" FORCE)
+    set(WITH_CYCLES_ONEAPI_BINARIES ON  CACHE BOOL "" FORCE)
+  endif()
 endif()
-if(WIN32)
-  set(WITH_CYCLES_DEVICE_HIPRT    ON  CACHE BOOL "" FORCE)
+
+if(WIN32 AND NOT (WIN32 AND "$ENV{VSCMD_ARG_TGT_ARCH}" STREQUAL "arm64"))
+  set(WITH_CYCLES_DEVICE_HIPRT ON CACHE BOOL "" FORCE)
 endif()

build_files/cmake/platform/platform_win32.cmake

@@ -257,7 +257,11 @@ set(PLATFORM_LINKFLAGS_RELEASE "${PLATFORM_LINKFLAGS} ${PDB_INFO_OVERRIDE_LINKER
 string(APPEND CMAKE_STATIC_LINKER_FLAGS " /ignore:4221")
 
 if(CMAKE_CL_64)
-  string(PREPEND PLATFORM_LINKFLAGS "/MACHINE:X64 ")
+  if(CMAKE_SYSTEM_PROCESSOR MATCHES ARM64)
+    string(PREPEND PLATFORM_LINKFLAGS "/MACHINE:ARM64 ")
+  else()
+    string(PREPEND PLATFORM_LINKFLAGS "/MACHINE:X64 ")
+  endif()
 else()
   string(PREPEND PLATFORM_LINKFLAGS "/MACHINE:IX86 /LARGEADDRESSAWARE ")
 endif()
@@ -266,7 +270,11 @@ if(NOT DEFINED LIBDIR)
   # Setup 64bit and 64bit windows systems
   if(CMAKE_CL_64)
     message(STATUS "64 bit compiler detected.")
-    set(LIBDIR_BASE "windows_x64")
+    if(CMAKE_SYSTEM_PROCESSOR MATCHES ARM64)
+      set(LIBDIR_BASE "windows_arm64")
+    else()
+      set(LIBDIR_BASE "windows_x64")
+    endif()
   else()
     message(FATAL_ERROR "32 bit compiler detected, blender no longer provides pre-build libraries for 32 bit windows, please set the LIBDIR cmake variable to your own library folder")
   endif()
@@ -604,9 +612,15 @@ if(NOT WITH_WINDOWS_FIND_MODULES)
   if(NOT BOOST_VERSION)
     message(FATAL_ERROR "Unable to determine Boost version")
   endif()
-  set(BOOST_POSTFIX "vc142-mt-x64-${BOOST_VERSION}")
-  set(BOOST_DEBUG_POSTFIX "vc142-mt-gyd-x64-${BOOST_VERSION}")
-  set(BOOST_PREFIX "")
+  if(CMAKE_SYSTEM_PROCESSOR MATCHES ARM64)
+    set(BOOST_POSTFIX "vc143-mt-a64-${BOOST_VERSION}")
+    set(BOOST_DEBUG_POSTFIX "vc143-mt-gyd-a64-${BOOST_VERSION}")
+    set(BOOST_PREFIX "")
+  else()
+    set(BOOST_POSTFIX "vc142-mt-x64-${BOOST_VERSION}")
+    set(BOOST_DEBUG_POSTFIX "vc142-mt-gyd-x64-${BOOST_VERSION}")
+    set(BOOST_PREFIX "")
+  endif()
 endif()
 
 if(WITH_BOOST)
@@ -625,8 +639,9 @@ if(WITH_BOOST)
   if(NOT Boost_FOUND)
     warn_hardcoded_paths(BOOST)
     # This is file new in 3.4 if it does not exist, assume we are building against 3.3 libs
+    # Note, as ARM64 was introduced in 4.x, this check is not needed
     set(BOOST_34_TRIGGER_FILE ${BOOST_LIBPATH}/${BOOST_PREFIX}boost_python${_PYTHON_VERSION_NO_DOTS}-${BOOST_DEBUG_POSTFIX}.lib)
-    if(NOT EXISTS ${BOOST_34_TRIGGER_FILE})
+    if (NOT EXISTS ${BOOST_34_TRIGGER_FILE})
       set(BOOST_DEBUG_POSTFIX "vc142-mt-gd-x64-${BOOST_VERSION}")
       set(BOOST_PREFIX "lib")
     endif()
@@ -893,6 +908,15 @@ if(WITH_CODEC_SNDFILE)
   endif()
 endif()
 
+if(WITH_CPU_SIMD AND SUPPORT_NEON_BUILD)
+  windows_find_package(sse2neon)
+  if(NOT SSE2NEON_FOUND)
+    set(SSE2NEON_ROOT_DIR ${LIBDIR}/sse2neon)
+    set(SSE2NEON_INCLUDE_DIRS ${LIBDIR}/sse2neon)
+    set(SSE2NEON_FOUND True)
+  endif()
+endif()
+
 if(WITH_CYCLES AND WITH_CYCLES_OSL)
   set(CYCLES_OSL ${LIBDIR}/osl CACHE PATH "Path to OpenShadingLanguage installation")
   set(OSL_SHADER_DIR ${CYCLES_OSL}/shaders)

build_files/windows/check_libraries.cmd

@@ -1,4 +1,8 @@
-set BUILD_VS_LIBDIR=lib/windows_x64
+if "%BUILD_ARCH%" == "arm64" (
+	set BUILD_VS_LIBDIR=lib/windows_arm64
+) else (
+	set BUILD_VS_LIBDIR=lib/windows_x64
+)
 
 if NOT "%verbose%" == "" (
 	echo Library Directory = "%BUILD_VS_LIBDIR%"

build_files/windows/configure_msbuild.cmd

@@ -19,6 +19,11 @@ if "%WITH_PYDEBUG%"=="1" (
 	set PYDEBUG_CMAKE_ARGS=-DWINDOWS_PYTHON_DEBUG=On
 )
 
+if "%BUILD_ARCH%"=="arm64" (
+	set MSBUILD_PLATFORM=arm64
+	set BUILD_PLATFORM_SELECT=-A ARM64
+)
+
 set BUILD_CMAKE_ARGS=%BUILD_CMAKE_ARGS% -G "Visual Studio %BUILD_VS_VER% %BUILD_VS_YEAR%%BUILD_GENERATOR_POST%" %BUILD_PLATFORM_SELECT% %TESTS_CMAKE_ARGS% %CLANG_CMAKE_ARGS% %ASAN_CMAKE_ARGS% %PYDEBUG_CMAKE_ARGS%
 
 if NOT EXIST %BUILD_DIR%\nul (

build_files/windows/detect_architecture.cmd

@@ -5,12 +5,18 @@ if "%BUILD_ARCH%"=="" (
 	) else if "%PROCESSOR_ARCHITEW6432%" == "AMD64" (
 		set WINDOWS_ARCH= Win64
 		set BUILD_ARCH=x64
+	) else if "%PROCESSOR_ARCHITECTURE%" == "ARM64" (
+		set WINDOWS_ARCH= arm64
+		set BUILD_ARCH=arm64
 	) else (
 		echo Error: 32 bit builds of blender are no longer supported.
 		goto ERR
 	)
 ) else if "%BUILD_ARCH%"=="x64" (
 	set WINDOWS_ARCH= Win64
+) else if "%BUILD_ARCH%"=="arm64" (
+	set WINDOWS_ARCH= arm64
+	set BUILD_ARCH=arm64
 )
 :EOF
 exit /b 0

build_files/windows/find_dependencies.cmd

@@ -23,6 +23,24 @@ if EXIST %PYTHON% (
 	goto detect_python_done
 )
 
+rem Additionally check for the ARM64 version
+set PYTHON=%BLENDER_DIR%\lib\windows_arm64\python\310\bin\python.exe
+if EXIST %PYTHON% (
+	goto detect_python_done
+)
+set PYTHON=%BLENDER_DIR%\lib\windows_arm64\python\311\bin\python.exe
+if EXIST %PYTHON% (
+	goto detect_python_done
+)
+set PYTHON=%BLENDER_DIR%\lib\windows_arm64\python\312\bin\python.exe
+if EXIST %PYTHON% (
+	goto detect_python_done
+)
+set PYTHON=%BLENDER_DIR%\lib\windows_arm64\python\39\bin\python.exe
+if EXIST %PYTHON% (
+	goto detect_python_done
+)
+
 if NOT EXIST %PYTHON% (
     if EXIST %BLENDER_DIR%\lib\windows_x64\.git (
       echo Warning: Python not found, there is likely an issue with the library folder

build_files/windows/format.cmd

@@ -3,6 +3,11 @@ if EXIST %BLENDER_DIR%\lib\windows_x64\llvm\bin\clang-format.exe (
     goto detect_done
 )
 
+if EXIST %BLENDER_DIR%\lib\windows_arm64\llvm\bin\clang-format.exe (
+    set CF_PATH=lib\windows_arm64\llvm\bin
+    goto detect_done
+)
+
 echo clang-format not found
 exit /b 1
 

build_files/windows/parse_arguments.cmd

@@ -50,6 +50,8 @@ if NOT "%1" == "" (
 		goto ERR
 	) else if "%1" == "x64" (
 		set BUILD_ARCH=x64
+	) else if "%1" == "arm64" (
+		set BUILD_ARCH=arm64
 	) else if "%1" == "2019" (
 		set BUILD_VS_YEAR=2019
 	) else if "%1" == "2019pre" (

build_files/windows/show_hashes.cmd

@@ -9,7 +9,11 @@ cd "%BLENDER_DIR%/scripts/addons"
 for /f "delims=" %%i in ('"%GIT%" rev-parse --abbrev-ref HEAD') do echo Addons_Branch_name=%%i
 for /f "delims=" %%i in ('"%GIT%" rev-parse HEAD') do echo Addons_Branch_hash=%%i
 
-cd "%BLENDER_DIR%/lib/windows_x64"
+if "%BUILD_ARCH%" == "arm64" (
+	cd "%BLENDER_DIR%/lib/windows_arm64"
+) else (
+	cd "%BLENDER_DIR%/lib/windows_x64"
+)
 for /f "delims=" %%i in ('"%GIT%" rev-parse --abbrev-ref HEAD') do echo Libs_Branch_name=%%i
 for /f "delims=" %%i in ('"%GIT%" rev-parse HEAD') do echo Libs_Branch_hash=%%i