| #!/bin/bash |
| # Copyright 2018 Google LLC |
| # |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| set -ex |
| |
| BASE_DIR=`cd $(dirname ${BASH_SOURCE[0]}) && pwd` |
| # This expects the environment variable EMSDK to be set |
| if [[ ! -d $EMSDK ]]; then |
| echo "Be sure to set the EMSDK environment variable." |
| exit 1 |
| fi |
| |
| # Navigate to SKIA_HOME from where this file is located. |
| pushd $BASE_DIR/../.. |
| |
| source $EMSDK/emsdk_env.sh |
| EMCC=`which emcc` |
| EMCXX=`which em++` |
| |
| RELEASE_CONF="-Oz --closure 1 --llvm-lto 3 -DSK_RELEASE" |
| EXTRA_CFLAGS="\"-DSK_RELEASE\"" |
| if [[ $@ == *debug* ]]; then |
| echo "Building a Debug build" |
| EXTRA_CFLAGS="\"-DSK_DEBUG\"" |
| RELEASE_CONF="-O0 --js-opts 0 -s DEMANGLE_SUPPORT=1 -s ASSERTIONS=1 -s GL_ASSERTIONS=1 -g3 -DPATHKIT_TESTING -DSK_DEBUG" |
| BUILD_DIR=${BUILD_DIR:="out/canvaskit_wasm_debug"} |
| else |
| BUILD_DIR=${BUILD_DIR:="out/canvaskit_wasm"} |
| fi |
| |
| mkdir -p $BUILD_DIR |
| |
| GN_GPU="skia_enable_gpu=true" |
| GN_GPU_FLAGS="\"-DIS_WEBGL=1\", \"-DSK_DISABLE_LEGACY_SHADERCONTEXT\"," |
| WASM_GPU="-lEGL -lGLESv2 -DSK_SUPPORT_GPU=1 \ |
| -DSK_DISABLE_LEGACY_SHADERCONTEXT --pre-js $BASE_DIR/gpu.js" |
| if [[ $@ == *cpu* ]]; then |
| echo "Using the CPU backend instead of the GPU backend" |
| GN_GPU="skia_enable_gpu=false" |
| GN_GPU_FLAGS="" |
| WASM_GPU="-DSK_SUPPORT_GPU=0 --pre-js $BASE_DIR/cpu.js" |
| fi |
| |
| WASM_SKOTTIE="-DSK_INCLUDE_SKOTTIE=1 \ |
| modules/skottie/src/Skottie.cpp \ |
| modules/skottie/src/SkottieAdapter.cpp \ |
| modules/skottie/src/SkottieAnimator.cpp \ |
| modules/skottie/src/SkottieJson.cpp \ |
| modules/skottie/src/SkottieLayer.cpp \ |
| modules/skottie/src/SkottieLayerEffect.cpp \ |
| modules/skottie/src/SkottiePrecompLayer.cpp \ |
| modules/skottie/src/SkottieProperty.cpp \ |
| modules/skottie/src/SkottieShapeLayer.cpp \ |
| modules/skottie/src/SkottieTextLayer.cpp \ |
| modules/skottie/src/SkottieValue.cpp \ |
| modules/sksg/src/*.cpp \ |
| src/core/SkCubicMap.cpp \ |
| src/core/SkTime.cpp \ |
| src/pathops/SkOpBuilder.cpp \ |
| src/utils/SkJSON.cpp \ |
| src/utils/SkParse.cpp " |
| if [[ $@ == *no_skottie* ]]; then |
| echo "Omitting Skottie" |
| WASM_SKOTTIE="-DSK_INCLUDE_SKOTTIE=0" |
| fi |
| |
| GN_NIMA="skia_enable_nima=true" |
| WASM_NIMA="-DSK_INCLUDE_NIMA=1 \ |
| experimental/nima/NimaActor.cpp" |
| if [[ $@ == *no_nima* ]]; then |
| echo "Omitting Nima" |
| GN_NIMA="skia_enable_nima=false" |
| WASM_NIMA="-DSK_INCLUDE_NIMA=0" |
| fi |
| |
| HTML_CANVAS_API="--pre-js $BASE_DIR/htmlcanvas/canvas2d.js" |
| if [[ $@ == *no_canvas* ]]; then |
| echo "Omitting bindings for HTML Canvas API" |
| HTML_CANVAS_API="" |
| fi |
| |
| # Turn off exiting while we check for ninja (which may not be on PATH) |
| set +e |
| NINJA=`which ninja` |
| if [[ -z $NINJA ]]; then |
| git clone "https://chromium.googlesource.com/chromium/tools/depot_tools.git" --depth 1 $BUILD_DIR/depot_tools |
| NINJA=$BUILD_DIR/depot_tools/ninja |
| fi |
| # Re-enable error checking |
| set -e |
| |
| echo "Compiling bitcode" |
| |
| # Inspired by https://github.com/Zubnix/skia-wasm-port/blob/master/build_bindings.sh |
| ./bin/gn gen ${BUILD_DIR} \ |
| --args="cc=\"${EMCC}\" \ |
| cxx=\"${EMCXX}\" \ |
| extra_cflags_cc=[\"-frtti\"] \ |
| extra_cflags=[\"-s\",\"USE_FREETYPE=1\",\"-s\",\"USE_LIBPNG=1\", \"-s\", \"WARN_UNALIGNED=1\", |
| \"-DSKNX_NO_SIMD\", \"-DSK_DISABLE_AAA\", \"-DSK_DISABLE_DAA\", \"-DSK_DISABLE_READBUFFER\", |
| ${GN_GPU_FLAGS} |
| ${EXTRA_CFLAGS} |
| ] \ |
| is_debug=false \ |
| is_official_build=true \ |
| is_component_build=false \ |
| target_cpu=\"wasm\" \ |
| \ |
| skia_use_angle = false \ |
| skia_use_dng_sdk=false \ |
| skia_use_egl=true \ |
| skia_use_expat=false \ |
| skia_use_fontconfig=false \ |
| skia_use_freetype=true \ |
| skia_use_icu=false \ |
| skia_use_libheif=false \ |
| skia_use_system_libjpeg_turbo = false \ |
| skia_use_libjpeg_turbo=true \ |
| skia_use_libpng=true \ |
| skia_use_libwebp=false \ |
| skia_use_lua=false \ |
| skia_use_piex=false \ |
| skia_use_vulkan=false \ |
| skia_use_zlib=true \ |
| \ |
| skia_enable_ccpr=false \ |
| skia_enable_nvpr=false \ |
| skia_enable_skpicture=false \ |
| ${GN_NIMA} \ |
| skia_enable_effect_deserialization = false \ |
| ${GN_GPU} \ |
| skia_enable_fontmgr_empty=false \ |
| skia_enable_pdf=false" |
| |
| ${NINJA} -C ${BUILD_DIR} libskia.a |
| |
| export EMCC_CLOSURE_ARGS="--externs $BASE_DIR/externs.js " |
| |
| echo "Generating final wasm" |
| |
| # Skottie doesn't end up in libskia and is currently not its own library |
| # so we just hack in the .cpp files we need for now. |
| # Emscripten prefers that libskia.a goes last in order, otherwise, it |
| # may drop symbols that it incorrectly thinks aren't used. One day, |
| # Emscripten will use LLD, which may relax this requirement. |
| ${EMCXX} \ |
| $RELEASE_CONF \ |
| -Iexperimental \ |
| -Iinclude/c \ |
| -Iinclude/codec \ |
| -Iinclude/config \ |
| -Iinclude/core \ |
| -Iinclude/effects \ |
| -Iinclude/gpu \ |
| -Iinclude/gpu/gl \ |
| -Iinclude/pathops \ |
| -Iinclude/private \ |
| -Iinclude/utils/ \ |
| -Imodules/skottie/include \ |
| -Imodules/sksg/include \ |
| -Isrc/core/ \ |
| -Isrc/gpu/ \ |
| -Isrc/sfnt/ \ |
| -Isrc/shaders/ \ |
| -Isrc/utils/ \ |
| -Itools \ |
| -Itools/fonts \ |
| -I$BUILD_DIR/gen/third_party/Nima-Cpp/Nima-Cpp \ |
| -I$BUILD_DIR/gen/third_party/Nima-Cpp/Nima-Math-Cpp \ |
| -DSK_DISABLE_READBUFFER \ |
| -DSK_DISABLE_AAA \ |
| -DSK_DISABLE_DAA \ |
| $WASM_GPU \ |
| -std=c++14 \ |
| --bind \ |
| --pre-js $BASE_DIR/helper.js \ |
| --pre-js $BASE_DIR/interface.js \ |
| $HTML_CANVAS_API \ |
| $BASE_DIR/canvaskit_bindings.cpp \ |
| tools/fonts/SkTestFontMgr.cpp \ |
| tools/fonts/SkTestTypeface.cpp \ |
| $WASM_NIMA \ |
| $WASM_SKOTTIE \ |
| $BUILD_DIR/libskia.a \ |
| -s ALLOW_MEMORY_GROWTH=1 \ |
| -s EXPORT_NAME="CanvasKitInit" \ |
| -s FORCE_FILESYSTEM=0 \ |
| -s MODULARIZE=1 \ |
| -s NO_EXIT_RUNTIME=1 \ |
| -s STRICT=1 \ |
| -s TOTAL_MEMORY=32MB \ |
| -s USE_FREETYPE=1 \ |
| -s USE_LIBPNG=1 \ |
| -s WARN_UNALIGNED=1 \ |
| -s WASM=1 \ |
| -o $BUILD_DIR/canvaskit.js |