| # Copyright 2024 The Dawn & Tint Authors |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # |
| # 1. Redistributions of source code must retain the above copyright notice, this |
| # list of conditions and the following disclaimer. |
| # |
| # 2. Redistributions in binary form must reproduce the above copyright notice, |
| # this list of conditions and the following disclaimer in the documentation |
| # and/or other materials provided with the distribution. |
| # |
| # 3. Neither the name of the copyright holder nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| set(EM_BUILD_GEN_DIR "${DAWN_BUILD_GEN_DIR}/src/emdawnwebgpu") |
| |
| DawnJSONGenerator( |
| TARGET "emdawnwebgpu_headers" |
| PRINT_NAME "Dawn WebGPU Emscripten headers" |
| OUTPUT_HEADERS EMDAWNWEBGPU_HEADERS_GEN_HEADERS |
| ) |
| add_custom_target(emdawnwebgpu_headers_gen |
| DEPENDS ${EMDAWNWEBGPU_HEADERS_GEN_HEADERS} |
| ) |
| # Also copy the webgpu_glfw.h file. |
| add_custom_command(TARGET emdawnwebgpu_headers_gen POST_BUILD |
| COMMAND ${CMAKE_COMMAND} -E copy |
| "${DAWN_INCLUDE_DIR}/webgpu/webgpu_glfw.h" |
| "${EM_BUILD_GEN_DIR}/include/webgpu/" |
| ) |
| |
| DawnJSONGenerator( |
| TARGET "emdawnwebgpu_js" |
| PRINT_NAME "Dawn WebGPU Emscripten JS files" |
| OUTPUT_JSONS EMDAWNWEBGPU_STRUCT_INFO_JSON_GEN_SOURCES |
| OUTPUT_JS EMDAWNWEBGPU_JS_GEN_SOURCES |
| ) |
| add_custom_target(emdawnwebgpu_js_gen |
| DEPENDS ${EMDAWNWEBGPU_STRUCT_INFO_JSON_GEN_SOURCES} ${EMDAWNWEBGPU_JS_GEN_SOURCES} |
| ) |
| |
| # When Emscripten is available, we can use one of its helper scripts to generate |
| # the struct info needed for our bindings fork (third_party/emdawnwebgpu). |
| # Those helpers, and their tree of generated dependencies, are: |
| # |
| # - library_webgpu_generated_struct_info.js |
| # is constructed by concatenating: |
| # - Some glue "snippets" from txt files |
| # - webgpu_generated_struct_info{32,64}.json |
| # which are generated using an Emscripten tool "gen_struct_info.py", from: |
| # - webgpu.h (generated from dawn.json) |
| # - struct_info_webgpu.json (generated from dawn.json) |
| # |
| # The bindings also require the following helpers (generated above): |
| # |
| # - library_webgpu_enum_tables.js |
| # - library_webgpu_generated_sig_info.js |
| # which we generate directly instead of using "gen_sig_info.py" |
| if (EMSCRIPTEN) |
| set(EM_SRC_DIR "${DAWN_SRC_DIR}/emdawnwebgpu") |
| |
| function(webgpu_gen_struct_info) |
| cmake_parse_arguments(PARSE_ARGV 0 arg |
| "" |
| "OUTPUT_JSON;WASM64" |
| "" |
| ) |
| if (arg_UNPARSED_ARGUMENTS) |
| message(FATAL_ERROR |
| "Unparsed arguments for webgpu_gen_struct_info: " |
| "${arg_UNPARSED_ARGUMENTS}") |
| endif() |
| |
| # Note this requires Emscripten 4.0.3+ (prior to that it was located |
| # at tools/maint/gen_struct_info.py). |
| set(ARGS |
| ${Python3_EXECUTABLE} |
| "${EMSCRIPTEN_ROOT_PATH}/tools/gen_struct_info.py" |
| -q |
| "${EM_BUILD_GEN_DIR}/struct_info_webgpu.json" |
| "-I=${EM_BUILD_GEN_DIR}/include" |
| ) |
| |
| set(PRINT_NAME) |
| if (${arg_WASM64}) |
| set(PRINT_NAME "webgpu_generated_struct_info64.json") |
| list(APPEND ARGS "--wasm64") |
| else() |
| set(PRINT_NAME "webgpu_generated_struct_info32.json") |
| endif() |
| set(OUTPUT "${EM_BUILD_GEN_DIR}/${PRINT_NAME}") |
| set(${arg_OUTPUT_JSON} "${OUTPUT}" PARENT_SCOPE) |
| list(APPEND ARGS "-o=${OUTPUT}") |
| |
| add_custom_command( |
| COMMAND ${ARGS} |
| OUTPUT ${OUTPUT} |
| COMMENT "Dawn Emscripten: Generating ${PRINT_NAME}." |
| DEPENDS |
| "${EMSCRIPTEN_ROOT_PATH}/tools/gen_struct_info.py" |
| ${EMDAWNWEBGPU_HEADERS_GEN_HEADERS} # for webgpu.h |
| ${EMDAWNWEBGPU_STRUCT_INFO_JSON_GEN_SOURCES} # for struct_info_webgpu.json |
| ) |
| |
| # Prior to CMake 3.20 the GENERATED property is local to a directory which means that putting |
| # generated headers in INTERFACE properties causes dependent targets to complain that they |
| # cannot find the file. (because they don't see it as generated and want to check is is |
| # actually on the filesystem). |
| # Work around this by generating the files once if they aren't present at configuration time. |
| if (NOT EXISTS ${OUTPUT}) |
| message(STATUS "Dawn: Generating initial versions of files for ${PRINT_NAME}.") |
| execute_process(COMMAND ${ARGS} RESULT_VARIABLE RET) |
| if (NOT RET EQUAL 0) |
| message(FATAL_ERROR "Dawn: Failed to generate the initial version of files for ${PRINT_NAME}. Base args are '${ARGS}'.") |
| endif() |
| endif() |
| endfunction() |
| |
| message(STATUS "Dawn: Configuring Emscripten gen_struct_info for WebGPU.") |
| |
| webgpu_gen_struct_info( |
| OUTPUT_JSON WEBGPU_STRUCT_INFO_GEN32 |
| WASM64 OFF |
| ) |
| webgpu_gen_struct_info( |
| OUTPUT_JSON WEBGPU_STRUCT_INFO_GEN64 |
| WASM64 ON |
| ) |
| |
| # TODO(crbug.com/346806934): Consider using CMake builtin `cat` as per https://stackoverflow.com/a/62362885, |
| # especially if we are to remove the GN build where concat.py is needed. |
| function(webgpu_gen_struct_info_js) |
| cmake_parse_arguments(PARSE_ARGV 0 arg |
| "" |
| "OUTPUT_JS" |
| "" |
| ) |
| if (arg_UNPARSED_ARGUMENTS) |
| message(FATAL_ERROR |
| "Unparsed arguments for webgpu_gen_struct_info_js: " |
| "${arg_UNPARSED_ARGUMENTS}") |
| endif() |
| |
| set(PRINT_NAME library_webgpu_generated_struct_info.js) |
| set(OUTPUT "${EM_BUILD_GEN_DIR}/${PRINT_NAME}") |
| set(SRCS |
| "${EM_SRC_DIR}/snippets/library_webgpu_struct_info_part1.txt" |
| "${WEBGPU_STRUCT_INFO_GEN32}" |
| "${EM_SRC_DIR}/snippets/library_webgpu_struct_info_part2.txt" |
| "${WEBGPU_STRUCT_INFO_GEN64}" |
| "${EM_SRC_DIR}/snippets/library_webgpu_struct_info_part3.txt" |
| ) |
| set(ARGS |
| ${Python3_EXECUTABLE} |
| "${EM_SRC_DIR}/concat.py" |
| "${OUTPUT}" |
| ${SRCS} |
| ) |
| set(${arg_OUTPUT_JS} "${OUTPUT}" PARENT_SCOPE) |
| |
| add_custom_command( |
| COMMAND ${ARGS} |
| OUTPUT ${OUTPUT} |
| COMMENT "Dawn Emscripten: Generating ${PRINT_NAME}." |
| DEPENDS |
| "${EM_SRC_DIR}/concat.py" |
| ${SRCS} |
| ) |
| |
| # Prior to CMake 3.20 the GENERATED property is local to a directory which means that putting |
| # generated headers in INTERFACE properties causes dependent targets to complain that they |
| # cannot find the file. (because they don't see it as generated and want to check is is |
| # actually on the filesystem). |
| # Work around this by generating the files once if they aren't present at configuration time. |
| if (NOT EXISTS ${OUTPUT}) |
| message(STATUS "Dawn: Generating initial versions of files for ${PRINT_NAME}.") |
| execute_process(COMMAND ${ARGS} RESULT_VARIABLE RET) |
| if (NOT RET EQUAL 0) |
| message(FATAL_ERROR "Dawn: Failed to generate the initial version of files for ${PRINT_NAME}. Base args are '${ARGS}'.") |
| endif() |
| endif() |
| endfunction() |
| |
| webgpu_gen_struct_info_js( |
| OUTPUT_JS EMDAWNWEBGPU_STRUCT_INFO_JS |
| ) |
| |
| # Include dir, and dependency on the generated files in the include dir. |
| add_library(emdawnwebgpu_c_include INTERFACE) |
| target_include_directories(emdawnwebgpu_c_include BEFORE INTERFACE |
| "${EM_BUILD_GEN_DIR}/include" |
| ) |
| add_dependencies(emdawnwebgpu_c_include emdawnwebgpu_headers_gen) |
| |
| dawn_add_library( |
| emdawnwebgpu_c |
| ENABLE_EMSCRIPTEN |
| HEADERS |
| "${EM_BUILD_GEN_DIR}/include/webgpu/webgpu.h" |
| SOURCES |
| "${DAWN_EMDAWNWEBGPU_DIR}/pkg/webgpu/src/webgpu.cpp" |
| DEPENDS |
| emdawnwebgpu_c_include |
| ) |
| target_link_options(emdawnwebgpu_c INTERFACE |
| # IMPORTANT: If changing these dependencies, update EMDAWNWEBGPU_C_ALL_FILE_DEPS too. |
| "--js-library=${EM_BUILD_GEN_DIR}/library_webgpu_enum_tables.js" |
| "--js-library=${EM_BUILD_GEN_DIR}/library_webgpu_generated_sig_info.js" |
| "--js-library=${EM_BUILD_GEN_DIR}/library_webgpu_generated_struct_info.js" |
| "--js-library=${DAWN_EMDAWNWEBGPU_DIR}/pkg/webgpu/src/library_webgpu.js" |
| "--closure-args=--externs=${DAWN_EMDAWNWEBGPU_DIR}/pkg/webgpu/src/webgpu-externs.js" |
| ) |
| |
| # Dependencies from emdawnwebgpu_c to the files referenced in the linker flags. |
| # - These are used as both file-level dependencies (defining *when* to rebuild) and |
| # target-level dependencies (defining *how* to rebuild). |
| set(EMDAWNWEBGPU_C_GENERATED_FILE_DEPS |
| "${EMDAWNWEBGPU_JS_GEN_SOURCES}" |
| "${EMDAWNWEBGPU_STRUCT_INFO_JS}" |
| ) |
| # - There are also source files, which are used only as file-level dependencies. |
| set(EMDAWNWEBGPU_C_ALL_FILE_DEPS |
| "${EMDAWNWEBGPU_C_GENERATED_FILE_DEPS}" |
| "${DAWN_EMDAWNWEBGPU_DIR}/pkg/webgpu/src/library_webgpu.js" |
| "${DAWN_EMDAWNWEBGPU_DIR}/pkg/webgpu/src/webgpu-externs.js" |
| ) |
| add_custom_target(emdawnwebgpu_config_generated_deps |
| DEPENDS "${EMDAWNWEBGPU_C_GENERATED_FILE_DEPS}" |
| ) |
| add_dependencies(emdawnwebgpu_c emdawnwebgpu_config_generated_deps) |
| set_target_properties(emdawnwebgpu_c PROPERTIES |
| # This defines file-level dependencies of the linker (intended for "linker scripts"). |
| INTERFACE_LINK_DEPENDS "${EMDAWNWEBGPU_C_ALL_FILE_DEPS}" |
| ) |
| |
| dawn_add_library( |
| emdawnwebgpu_cpp |
| ENABLE_EMSCRIPTEN |
| HEADER_ONLY |
| HEADERS |
| "${EM_BUILD_GEN_DIR}/include/dawn/webgpu_cpp_print.h" |
| "${EM_BUILD_GEN_DIR}/include/webgpu/webgpu_cpp.h" |
| "${EM_BUILD_GEN_DIR}/include/webgpu/webgpu_cpp_chained_struct.h" |
| "${DAWN_INCLUDE_DIR}/webgpu/webgpu_enum_class_bitmasks.h" |
| DEPENDS |
| emdawnwebgpu_c |
| ) |
| |
| add_custom_target(emdawnwebgpu_pkg |
| DEPENDS |
| # This will compile webgpu.cpp, which is unnecessary because we package webgpu.cpp as a |
| # source file, but it's simpler than specifying all the generator dependencies again. |
| emdawnwebgpu_c |
| ) |
| |
| add_custom_command(TARGET emdawnwebgpu_pkg POST_BUILD |
| # Copy files from src/emdawnwebgpu/pkg and third_party/emdawnwebgpu/pkg |
| COMMAND ${CMAKE_COMMAND} -E copy_directory |
| "${DAWN_EMDAWNWEBGPU_DIR}/pkg/" |
| "${EM_SRC_DIR}/pkg/" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/" |
| COMMAND ${CMAKE_COMMAND} -E make_directory |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu/include/webgpu/" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu_cpp/include/webgpu/" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu_cpp/include/dawn/" |
| |
| # Copy webgpu_enum_class_bitmasks.h |
| COMMAND ${CMAKE_COMMAND} -E copy |
| "${DAWN_INCLUDE_DIR}/webgpu/webgpu_enum_class_bitmasks.h" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu_cpp/include/webgpu/" |
| |
| # Copy webgpu_glfw.h |
| COMMAND ${CMAKE_COMMAND} -E copy |
| "${EM_BUILD_GEN_DIR}/include/webgpu/webgpu_glfw.h" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu/include/webgpu/" |
| |
| # Copy generated files |
| COMMAND ${CMAKE_COMMAND} -E copy |
| "${EM_BUILD_GEN_DIR}/library_webgpu_enum_tables.js" |
| "${EM_BUILD_GEN_DIR}/library_webgpu_generated_struct_info.js" |
| "${EM_BUILD_GEN_DIR}/library_webgpu_generated_sig_info.js" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu/src/" |
| COMMAND ${CMAKE_COMMAND} -E copy |
| "${EM_BUILD_GEN_DIR}/include/webgpu/webgpu.h" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu/include/webgpu/" |
| COMMAND ${CMAKE_COMMAND} -E copy |
| "${EM_BUILD_GEN_DIR}/include/webgpu/webgpu_cpp.h" |
| "${EM_BUILD_GEN_DIR}/include/webgpu/webgpu_cpp_chained_struct.h" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu_cpp/include/webgpu/" |
| COMMAND ${CMAKE_COMMAND} -E copy |
| "${EM_BUILD_GEN_DIR}/include/dawn/webgpu_cpp_print.h" |
| "${CMAKE_BINARY_DIR}/emdawnwebgpu_pkg/webgpu_cpp/include/dawn/" |
| ) |
| |
| if (${DAWN_BUILD_TESTS}) |
| set(emdawnwebgpu_test_sources |
| "tests/FuturesTests.cpp" |
| ) |
| set(emdawnwebgpu_test_deps |
| dawn::dawn_wgpu_utils |
| emdawnwebgpu_cpp |
| gmock_main_wasmsafe |
| ) |
| |
| add_executable(emdawnwebgpu_tests_asyncify ${emdawnwebgpu_test_sources}) |
| set_target_properties(emdawnwebgpu_tests_asyncify PROPERTIES |
| SUFFIX ".html") |
| target_link_libraries( |
| emdawnwebgpu_tests_asyncify |
| PUBLIC |
| ${emdawnwebgpu_test_deps} |
| ) |
| target_link_options(emdawnwebgpu_tests_asyncify PUBLIC |
| # We need Asyncify or JSPI for Future tests. |
| "-sASYNCIFY=1" |
| ) |
| |
| add_executable(emdawnwebgpu_tests_jspi ${emdawnwebgpu_test_sources}) |
| set_target_properties(emdawnwebgpu_tests_jspi PROPERTIES |
| SUFFIX ".html") |
| target_link_libraries( |
| emdawnwebgpu_tests_jspi |
| PUBLIC |
| ${emdawnwebgpu_test_deps} |
| ) |
| target_link_options(emdawnwebgpu_tests_jspi PUBLIC |
| # We need Asyncify or JSPI for Future tests. |
| "-sJSPI=1" |
| ) |
| |
| DawnJSONGenerator( |
| TARGET "emdawnwebgpu_link_test_cpp" |
| PRINT_NAME "emdawnwebgpu LinkTest.cpp" |
| OUTPUT_SOURCES EMDAWNWEBGPU_LINK_TEST_CPP_SOURCES |
| ) |
| add_executable(emdawnwebgpu_link_test |
| ${EMDAWNWEBGPU_LINK_TEST_CPP_SOURCES} |
| ) |
| # The test is just that this links, not that it runs (it doesn't do |
| # anything interesting), so just build to .js. Since it has a main() |
| # function, this is the same as building to .html, but skipping the |
| # .html file. It _is_ runnable if invoked via <script> or `node`. |
| set_target_properties(emdawnwebgpu_link_test PROPERTIES |
| SUFFIX ".js") |
| target_link_options(emdawnwebgpu_link_test |
| PRIVATE |
| --closure=1 |
| ) |
| target_link_libraries( |
| emdawnwebgpu_link_test |
| PUBLIC |
| emdawnwebgpu_c |
| ) |
| endif() |
| endif() |
