blob: 4a27fe398fe2a1f770f1e87493beabc2e70a35e0 [file] [log] [blame]
#!/bin/bash
# Copyright 2020 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
cat >&2 << "EOF"
Be sure to set the EMSDK environment variable to the location of Emscripten SDK:
https://emscripten.org/docs/getting_started/downloads.html
EOF
exit 1
fi
# Navigate to SKIA_HOME from where this file is located.
pushd $BASE_DIR/../..
source $EMSDK/emsdk_env.sh
EMCXX=`which em++`
if [[ $@ == *debug* ]]; then
echo "Building a Debug build"
DEBUG=true
EXTRA_CFLAGS="\"-DSK_DEBUG\", \"-DGR_TEST_UTILS\", "
RELEASE_CONF="-O1 --js-opts 0 -sDEMANGLE_SUPPORT=1 -frtti -sASSERTIONS=1 -sGL_ASSERTIONS=1 -g \
-DSK_DEBUG --pre-js $BASE_DIR/debug.js"
BUILD_DIR=${BUILD_DIR:="out/wasm_gm_tests_debug"}
else
echo "Building a release build"
DEBUG=false
BUILD_DIR=${BUILD_DIR:="out/wasm_gm_tests"}
RELEASE_CONF="-O3 -DSK_RELEASE --pre-js $BASE_DIR/release.js \
-DGR_TEST_UTILS"
EXTRA_CFLAGS="\"-DSK_RELEASE\", \"-DGR_TEST_UTILS\", "
fi
IS_OFFICIAL_BUILD="false"
mkdir -p $BUILD_DIR
# sometimes the .a files keep old symbols around - cleaning them out makes sure
# we get a fresh build.
rm -f $BUILD_DIR/*.a
GN_GPU="skia_enable_gpu=true skia_gl_standard = \"webgl\""
GN_GPU_FLAGS="\"-DSK_DISABLE_LEGACY_SHADERCONTEXT\","
WASM_GPU="-lGL -DSK_SUPPORT_GPU=1 -DSK_GL \
-DSK_DISABLE_LEGACY_SHADERCONTEXT --pre-js $BASE_DIR/cpu.js --pre-js $BASE_DIR/gpu.js\
-sUSE_WEBGL2=1"
GM_LIB="$BUILD_DIR/libgm_wasm.a"
GN_FONT="skia_enable_fontmgr_custom_directory=false "
BUILTIN_FONT="$BASE_DIR/fonts/NotoMono-Regular.ttf.cpp"
# Generate the font's binary file (which is covered by .gitignore)
python tools/embed_resources.py \
--name SK_EMBEDDED_FONTS \
--input $BASE_DIR/fonts/NotoMono-Regular.ttf \
--output $BASE_DIR/fonts/NotoMono-Regular.ttf.cpp \
--align 4
GN_FONT+="skia_enable_fontmgr_custom_embedded=true skia_enable_fontmgr_custom_empty=false"
GN_SHAPER="skia_use_icu=true skia_use_system_icu=false skia_use_harfbuzz=true skia_use_system_harfbuzz=false"
# 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
./bin/fetch-gn
echo "Compiling bitcode"
# Inspired by https://github.com/Zubnix/skia-wasm-port/blob/master/build_bindings.sh
./bin/gn gen ${BUILD_DIR} \
--args="skia_emsdk_dir=\"${EMSDK}\" \
extra_cflags_cc=[\"-frtti\"] \
extra_cflags=[\"-sMAIN_MODULE=1\",
\"-DSKNX_NO_SIMD\", \"-DSK_DISABLE_AAA\",
\"-DSK_FORCE_8_BYTE_ALIGNMENT\",
${GN_GPU_FLAGS}
${EXTRA_CFLAGS}
] \
is_debug=${DEBUG} \
is_official_build=${IS_OFFICIAL_BUILD} \
is_component_build=false \
werror=true \
target_cpu=\"wasm\" \
\
skia_use_angle=false \
skia_use_dng_sdk=false \
skia_use_webgl=true \
skia_use_fontconfig=false \
skia_use_freetype=true \
skia_use_libheif=true \
skia_use_libjpeg_turbo_decode=true \
skia_use_libjpeg_turbo_encode=true \
skia_use_libpng_decode=true \
skia_use_libpng_encode=true \
skia_use_libwebp_decode=true \
skia_use_libwebp_encode=true \
skia_use_lua=false \
skia_use_piex=true \
skia_use_system_freetype2=false \
skia_use_system_libjpeg_turbo=false \
skia_use_system_libpng=false \
skia_use_system_libwebp=false \
skia_use_system_zlib=false\
skia_use_vulkan=false \
skia_use_wuffs=true \
skia_use_zlib=true \
\
${GN_SHAPER} \
${GN_GPU} \
${GN_FONT} \
skia_use_expat=true \
skia_enable_svg=true \
skia_enable_skshaper=true \
skia_enable_skparagraph=true \
skia_enable_pdf=false"
# Build all the libs we will need below
parse_targets() {
for LIBPATH in $@; do
basename $LIBPATH
done
}
${NINJA} -C ${BUILD_DIR} libskia.a libskshaper.a libskunicode.a \
$(parse_targets $GM_LIB)
echo "Generating final wasm"
# Defines for the emscripten compilation step, which builds the tests
# Aim to match the defines that would be set by gn for the skia compilation step.
SKIA_DEFINES="
-DSK_DISABLE_AAA \
-DSK_FORCE_8_BYTE_ALIGNMENT \
-DSK_HAS_WUFFS_LIBRARY \
-DSK_HAS_HEIF_LIBRARY \
-DSK_ENCODE_WEBP \
-DSK_CODEC_DECODES_WEBP \
-DSK_ENCODE_PNG \
-DSK_CODEC_DECODES_PNG \
-DSK_ENCODE_JPEG \
-DSK_CODEC_DECODES_JPEG \
-DSK_SHAPER_HARFBUZZ_AVAILABLE \
-DSK_UNICODE_AVAILABLE \
-DSK_ENABLE_SVG"
GMS_TO_BUILD="gm/*.cpp"
TESTS_TO_BUILD="tests/*.cpp"
# When developing locally, it can be faster to focus only on the gms or tests you care about
# (since they all have to be recompiled/relinked) every time. To do so, mark the following as true
if false; then
GMS_TO_BUILD="gm/gm.cpp"
TESTS_TO_BUILD="tests/BulkRectTest.cpp tests/Test.cpp"
fi
# These gms do not compile or link with the WASM code. Thus, we omit them.
GLOBIGNORE="gm/cgms.cpp:"\
"gm/compressed_textures.cpp:"\
"gm/fiddle.cpp:"\
"gm/particles.cpp:"\
"gm/video_decoder.cpp:"
# These tests do not compile with the WASM code (require other deps).
GLOBIGNORE+="tests/CodecTest.cpp:"\
"tests/ColorSpaceTest.cpp:"\
"tests/DrawOpAtlasTest.cpp:"\
"tests/EncodeTest.cpp:"\
"tests/FontMgrAndroidParserTest.cpp:"\
"tests/FontMgrFontConfigTest.cpp:"\
"tests/TypefaceMacTest.cpp:"\
"tests/SkVMTest.cpp:"
# These tests do complex things with TestContexts, which is not easily supported for the WASM
# test harness. Thus we omit them.
GLOBIGNORE+="tests/BackendAllocationTest.cpp:"\
"tests/EGLImageTest.cpp:"\
"tests/ImageTest.cpp:"\
"tests/SurfaceSemaphoreTest.cpp:"\
"tests/TextureBindingsResetTest.cpp:"\
"tests/VkHardwareBufferTest.cpp:"
# All the tests in these files crash.
GLOBIGNORE+="tests/GrThreadSafeCacheTest.cpp"
# Emscripten prefers that the .a files go 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.
EMCC_DEBUG=1 ${EMCXX} \
$RELEASE_CONF \
-I. \
-DGR_TEST_UTILS \
$SKIA_DEFINES \
$WASM_GPU \
-std=c++17 \
--profiling-funcs \
--profiling \
--bind \
--no-entry \
--pre-js $BASE_DIR/gm.js \
tools/Resources.cpp \
$BASE_DIR/gm_bindings.cpp \
$GMS_TO_BUILD \
$TESTS_TO_BUILD \
$GM_LIB \
$BUILD_DIR/libskshaper.a \
$BUILD_DIR/libskunicode.a \
$BUILD_DIR/libsvg.a \
$BUILD_DIR/libskia.a \
$BUILTIN_FONT \
-sLLD_REPORT_UNDEFINED \
-sALLOW_MEMORY_GROWTH=1 \
-sEXPORT_NAME="InitWasmGMTests" \
-sEXPORTED_FUNCTIONS=['_malloc','_free'] \
-sFORCE_FILESYSTEM=1 \
-sFILESYSTEM=1 \
-sMODULARIZE=1 \
-sNO_EXIT_RUNTIME=1 \
-sINITIAL_MEMORY=256MB \
-sWASM=1 \
-sSTRICT=1 \
-o $BUILD_DIR/wasm_gm_tests.js