1#!/bin/bash 2# Copyright 2020 Google LLC 3# 4# Use of this source code is governed by a BSD-style license that can be 5# found in the LICENSE file. 6 7set -ex 8 9BASE_DIR=`cd $(dirname ${BASH_SOURCE[0]}) && pwd` 10# This expects the environment variable EMSDK to be set 11if [[ ! -d $EMSDK ]]; then 12 cat >&2 << "EOF" 13Be sure to set the EMSDK environment variable to the location of Emscripten SDK: 14 15 https://emscripten.org/docs/getting_started/downloads.html 16EOF 17 exit 1 18fi 19 20# Navigate to SKIA_HOME from where this file is located. 21pushd $BASE_DIR/../.. 22 23source $EMSDK/emsdk_env.sh 24EMCC=`which emcc` 25EMCXX=`which em++` 26EMAR=`which emar` 27 28if [[ $@ == *debug* ]]; then 29 echo "Building a Debug build" 30 DEBUG=true 31 EXTRA_CFLAGS="\"-DSK_DEBUG\", \"-DGR_TEST_UTILS\", " 32 RELEASE_CONF="-O1 --js-opts 0 -s DEMANGLE_SUPPORT=1 -frtti -s ASSERTIONS=1 -s GL_ASSERTIONS=1 -g \ 33 -DSK_DEBUG --pre-js $BASE_DIR/debug.js" 34 BUILD_DIR=${BUILD_DIR:="out/wasm_gm_tests_debug"} 35else 36 echo "Building a release build" 37 DEBUG=false 38 BUILD_DIR=${BUILD_DIR:="out/wasm_gm_tests"} 39 RELEASE_CONF="-O3 -DSK_RELEASE --pre-js $BASE_DIR/release.js \ 40 -DGR_TEST_UTILS" 41 EXTRA_CFLAGS="\"-DSK_RELEASE\", \"-DGR_TEST_UTILS\", " 42fi 43 44IS_OFFICIAL_BUILD="false" 45 46mkdir -p $BUILD_DIR 47# sometimes the .a files keep old symbols around - cleaning them out makes sure 48# we get a fresh build. 49rm -f $BUILD_DIR/*.a 50 51GN_GPU="skia_enable_gpu=true skia_gl_standard = \"webgl\"" 52GN_GPU_FLAGS="\"-DSK_DISABLE_LEGACY_SHADERCONTEXT\"," 53WASM_GPU="-lGL -DSK_SUPPORT_GPU=1 -DSK_GL \ 54 -DSK_DISABLE_LEGACY_SHADERCONTEXT --pre-js $BASE_DIR/cpu.js --pre-js $BASE_DIR/gpu.js\ 55 -s USE_WEBGL2=1" 56 57GM_LIB="$BUILD_DIR/libgm_wasm.a" 58 59GN_FONT="skia_enable_fontmgr_custom_directory=false " 60BUILTIN_FONT="$BASE_DIR/fonts/NotoMono-Regular.ttf.cpp" 61# Generate the font's binary file (which is covered by .gitignore) 62python tools/embed_resources.py \ 63 --name SK_EMBEDDED_FONTS \ 64 --input $BASE_DIR/fonts/NotoMono-Regular.ttf \ 65 --output $BASE_DIR/fonts/NotoMono-Regular.ttf.cpp \ 66 --align 4 67GN_FONT+="skia_enable_fontmgr_custom_embedded=true skia_enable_fontmgr_custom_empty=false" 68 69 70GN_SHAPER="skia_use_icu=true skia_use_system_icu=false skia_use_harfbuzz=true skia_use_system_harfbuzz=false" 71 72# Turn off exiting while we check for ninja (which may not be on PATH) 73set +e 74NINJA=`which ninja` 75if [[ -z $NINJA ]]; then 76 git clone "https://chromium.googlesource.com/chromium/tools/depot_tools.git" --depth 1 $BUILD_DIR/depot_tools 77 NINJA=$BUILD_DIR/depot_tools/ninja 78fi 79# Re-enable error checking 80set -e 81 82./bin/fetch-gn 83 84echo "Compiling bitcode" 85 86# Inspired by https://github.com/Zubnix/skia-wasm-port/blob/master/build_bindings.sh 87./bin/gn gen ${BUILD_DIR} \ 88 --args="cc=\"${EMCC}\" \ 89 cxx=\"${EMCXX}\" \ 90 ar=\"${EMAR}\" \ 91 extra_cflags_cc=[\"-frtti\"] \ 92 extra_cflags=[\"-s\", \"WARN_UNALIGNED=1\", \"-s\", \"MAIN_MODULE=1\", 93 \"-DSKNX_NO_SIMD\", \"-DSK_DISABLE_AAA\", 94 \"-DSK_FORCE_8_BYTE_ALIGNMENT\", 95 ${GN_GPU_FLAGS} 96 ${EXTRA_CFLAGS} 97 ] \ 98 is_debug=${DEBUG} \ 99 is_official_build=${IS_OFFICIAL_BUILD} \ 100 is_component_build=false \ 101 werror=true \ 102 target_cpu=\"wasm\" \ 103 \ 104 skia_use_angle=false \ 105 skia_use_dng_sdk=false \ 106 skia_use_webgl=true \ 107 skia_use_fontconfig=false \ 108 skia_use_freetype=true \ 109 skia_use_libheif=true \ 110 skia_use_libjpeg_turbo_decode=true \ 111 skia_use_libjpeg_turbo_encode=true \ 112 skia_use_libpng_decode=true \ 113 skia_use_libpng_encode=true \ 114 skia_use_libwebp_decode=true \ 115 skia_use_libwebp_encode=true \ 116 skia_use_lua=false \ 117 skia_use_piex=true \ 118 skia_use_system_freetype2=false \ 119 skia_use_system_libjpeg_turbo=false \ 120 skia_use_system_libpng=false \ 121 skia_use_system_libwebp=false \ 122 skia_use_system_zlib=false\ 123 skia_use_vulkan=false \ 124 skia_use_wuffs=true \ 125 skia_use_zlib=true \ 126 \ 127 ${GN_SHAPER} \ 128 ${GN_GPU} \ 129 ${GN_FONT} \ 130 skia_use_expat=true \ 131 skia_enable_svg=true \ 132 skia_enable_skshaper=true \ 133 skia_enable_skparagraph=true \ 134 skia_enable_pdf=false" 135 136# Build all the libs we will need below 137parse_targets() { 138 for LIBPATH in $@; do 139 basename $LIBPATH 140 done 141} 142${NINJA} -C ${BUILD_DIR} libskia.a libskshaper.a libskunicode.a \ 143 $(parse_targets $GM_LIB) 144 145echo "Generating final wasm" 146 147# Defines for the emscripten compilation step, which builds the tests 148# Aim to match the defines that would be set by gn for the skia compilation step. 149SKIA_DEFINES=" 150-DSK_DISABLE_AAA \ 151-DSK_FORCE_8_BYTE_ALIGNMENT \ 152-DSK_HAS_WUFFS_LIBRARY \ 153-DSK_HAS_HEIF_LIBRARY \ 154-DSK_ENCODE_WEBP \ 155-DSK_CODEC_DECODES_WEBP \ 156-DSK_ENCODE_PNG \ 157-DSK_CODEC_DECODES_PNG \ 158-DSK_ENCODE_JPEG \ 159-DSK_CODEC_DECODES_JPEG \ 160-DSK_SHAPER_HARFBUZZ_AVAILABLE \ 161-DSK_UNICODE_AVAILABLE \ 162-DSK_ENABLE_SVG" 163 164# Disable '-s STRICT=1' outside of Linux until 165# https://github.com/emscripten-core/emscripten/issues/12118 is resovled. 166STRICTNESS="-s STRICT=1" 167if [[ `uname` != "Linux" ]]; then 168 echo "Disabling '-s STRICT=1'. See: https://github.com/emscripten-core/emscripten/issues/12118" 169 STRICTNESS="" 170fi 171 172GMS_TO_BUILD="gm/*.cpp" 173TESTS_TO_BUILD="tests/*.cpp" 174 175# When developing locally, it can be faster to focus only on the gms or tests you care about 176# (since they all have to be recompiled/relinked) every time. To do so, mark the following as true 177if false; then 178 GMS_TO_BUILD="gm/gm.cpp" 179 TESTS_TO_BUILD="tests/BulkRectTest.cpp tests/Test.cpp" 180fi 181 182# These gms do not compile or link with the WASM code. Thus, we omit them. 183GLOBIGNORE="gm/cgms.cpp:"\ 184"gm/compressed_textures.cpp:"\ 185"gm/fiddle.cpp:"\ 186"gm/particles.cpp:"\ 187"gm/xform.cpp:"\ 188"gm/video_decoder.cpp:" 189 190# These tests do not compile with the WASM code (require other deps). 191GLOBIGNORE+="tests/CodecTest.cpp:"\ 192"tests/ColorSpaceTest.cpp:"\ 193"tests/DrawOpAtlasTest.cpp:"\ 194"tests/EncodeTest.cpp:"\ 195"tests/FontMgrAndroidParserTest.cpp:"\ 196"tests/FontMgrFontConfigTest.cpp:"\ 197"tests/TypefaceMacTest.cpp:"\ 198"tests/SkVMTest.cpp:" 199 200# These tests do complex things with TestContexts, which is not easily supported for the WASM 201# test harness. Thus we omit them. 202GLOBIGNORE+="tests/BackendAllocationTest.cpp:"\ 203"tests/EGLImageTest.cpp:"\ 204"tests/ImageTest.cpp:"\ 205"tests/SurfaceSemaphoreTest.cpp:"\ 206"tests/TextureBindingsResetTest.cpp:"\ 207"tests/VkHardwareBufferTest.cpp:" 208 209# All the tests in these files crash. 210GLOBIGNORE+="tests/GrThreadSafeCacheTest.cpp" 211 212# Emscripten prefers that the .a files go last in order, otherwise, it 213# may drop symbols that it incorrectly thinks aren't used. One day, 214# Emscripten will use LLD, which may relax this requirement. 215EMCC_DEBUG=1 ${EMCXX} \ 216 $RELEASE_CONF \ 217 -I. \ 218 -DGR_TEST_UTILS \ 219 $SKIA_DEFINES \ 220 $WASM_GPU \ 221 -std=c++17 \ 222 --profiling-funcs \ 223 --profiling \ 224 --bind \ 225 --no-entry \ 226 --pre-js $BASE_DIR/gm.js \ 227 tools/Resources.cpp \ 228 $BASE_DIR/gm_bindings.cpp \ 229 $GMS_TO_BUILD \ 230 $TESTS_TO_BUILD \ 231 $GM_LIB \ 232 $BUILD_DIR/libskshaper.a \ 233 $BUILD_DIR/libskunicode.a \ 234 $BUILD_DIR/libsvg.a \ 235 $BUILD_DIR/libskia.a \ 236 $BUILTIN_FONT \ 237 -s LLD_REPORT_UNDEFINED \ 238 -s ALLOW_MEMORY_GROWTH=1 \ 239 -s EXPORT_NAME="InitWasmGMTests" \ 240 -s EXPORTED_FUNCTIONS=['_malloc','_free'] \ 241 -s FORCE_FILESYSTEM=1 \ 242 -s FILESYSTEM=1 \ 243 -s MODULARIZE=1 \ 244 -s NO_EXIT_RUNTIME=1 \ 245 -s INITIAL_MEMORY=256MB \ 246 -s WASM=1 \ 247 $STRICTNESS \ 248 -o $BUILD_DIR/wasm_gm_tests.js 249