Add GitHub actions to build Skia

.github/workflows/build.yml

@@ -0,0 +1,121 @@
+name: Build
+on: push
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, macos-latest, ubuntu-16.04]
+        mode: [Release, Debug]
+        arch: [x64, x86]
+        exclude:
+          - os: macos-latest
+            arch: x86
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      shell: bash
+      run: |
+        if [[ "${{ runner.os }}" == "Windows" ]] ; then
+          choco install llvm
+          choco install zip
+        elif [[ "${{ runner.os }}" == "macOS" ]] ; then
+          brew install coreutils
+        else
+          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+          sudo apt-add-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main"
+          sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+          sudo apt-get update -qq
+          sudo apt-get install -y \
+            git g++ g++-multilib clang-10 libc++-10-dev pandoc dpkg-dev \
+            libcurl4-openssl-dev libgif-dev libjpeg-dev \
+            libz-dev libpng-dev libtinyxml-dev libpixman-1-dev \
+            libx11-dev libxcursor-dev ninja-build zip unzip \
+            libfontconfig-dev libgl1-mesa-dev
+        fi
+    - name: Download depot_tools
+      run: |
+        git clone 'https://chromium.googlesource.com/chromium/tools/depot_tools.git'
+        echo "::add-path::${PWD}/depot_tools"
+    - name: Sync Deps
+      run: python tools/git-sync-deps
+    - name: Generating Ninja Files
+      shell: bash
+      run: |
+        if [[ "${{ matrix.mode }}" == "Debug" ]] ; then
+          export is_debug=true
+          export is_official=false
+        else
+          export is_debug=false
+          export is_official=true
+        fi
+        if [[ "${{ runner.os }}" == "Windows" ]] ; then
+          export gn_flags='win_vc="C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC" win_toolchain_version="15.0" win_sdk="C:\\Program Files (x86)\\Windows Kits\\10" win_sdk_version="10.0.18362.0" cc="clang" cxx="clang++" clang_win="C:\Program Files\LLVM" clang_win_version="9.0.0"'
+          if [[ "${{ matrix.mode }}" == "Debug" ]] ; then
+            export gn_flags="$gn_flags extra_cflags=[\"-MTd\"]"
+          else
+            export gn_flags="$gn_flags extra_cflags=[\"-MT\"]"
+          fi
+        elif [[ "${{ runner.os }}" == "macOS" ]] ; then
+          export gn_flags='extra_cflags=["-stdlib=libc++", "-mmacosx-version-min=10.9"] extra_cflags_cc=["-frtti"]'
+        else
+          export gn_flags='cc="clang-10" cxx="clang++-10" extra_cflags_cc=["-stdlib=libc++"] extra_ldflags=["-stdlib=libc++"]'
+        fi
+        gn gen out/${{ matrix.mode }}-${{ matrix.arch }} --args="is_debug=$is_debug is_official_build=$is_official skia_use_system_expat=false skia_use_system_icu=false skia_use_system_libjpeg_turbo=false skia_use_system_libpng=false skia_use_system_libwebp=false skia_use_system_zlib=false skia_use_sfntly=false skia_use_freetype=true skia_use_harfbuzz=true skia_pdf_subset_harfbuzz=true skia_use_system_freetype2=false skia_use_system_harfbuzz=false target_cpu=\"${{ matrix.arch }}\" $gn_flags"
+    - name: Compiling
+      run: ninja -C out/${{ matrix.mode }}-${{ matrix.arch }} skia modules
+    - name: Copying Files
+      shell: bash
+      run: |
+        if [[ "${{ runner.os }}" == "Windows" ]] ; then
+          export libext=lib
+        else
+          export libext=a
+        fi
+        if [[ "${{ runner.os }}" == "macOS" ]] ; then
+          export cp=gcp
+        else
+          export cp=cp
+        fi
+        export dst=Skia-${{ runner.os }}-${{ matrix.mode }}-${{ matrix.arch }}
+        mkdir $dst
+        $cp -R --parents \
+          out/${{ matrix.mode }}-${{ matrix.arch }}/*.$libext \
+          include \
+          modules/particles/include/*.h \
+          modules/skottie/include/*.h \
+          modules/skparagraph/include/*.h \
+          modules/skplaintexteditor/include/*.h \
+          modules/skresources/include/*.h \
+          modules/sksg/include/*.h \
+          modules/skshaper/include/*.h \
+          src/gpu/gl/*.h \
+          third_party/externals/angle2/LICENSE \
+          third_party/externals/angle2/include \
+          third_party/externals/freetype/docs/FTL.TXT \
+          third_party/externals/freetype/docs/GPLv2.TXT \
+          third_party/externals/freetype/docs/LICENSE.TXT \
+          third_party/externals/freetype/include \
+          third_party/externals/libpng/LICENSE \
+          third_party/externals/libpng/*.h \
+          third_party/externals/libwebp/COPYING \
+          third_party/externals/libwebp/PATENTS \
+          third_party/externals/libwebp/src/dec/*.h \
+          third_party/externals/libwebp/src/dsp/*.h \
+          third_party/externals/libwebp/src/enc/*.h \
+          third_party/externals/libwebp/src/mux/*.h \
+          third_party/externals/libwebp/src/utils/*.h \
+          third_party/externals/libwebp/src/webp/*.h \
+          third_party/externals/harfbuzz/COPYING \
+          third_party/externals/harfbuzz/src/*.h \
+          third_party/externals/swiftshader/LICENSE.txt \
+          third_party/externals/swiftshader/include \
+          third_party/externals/zlib/LICENSE \
+          third_party/externals/zlib/*.h \
+          $dst
+    - name: Uploading Artifact
+      uses: actions/upload-artifact@v1
+      with:
+        name: Skia-${{ runner.os }}-${{ matrix.mode }}-${{ matrix.arch }}
+        path: Skia-${{ runner.os }}-${{ matrix.mode }}-${{ matrix.arch }}

README.md

@@ -0,0 +1,112 @@
+# Skia for Aseprite and laf
+
+**Pre-built binaries of Skia** in the [releases page](https://github.com/aseprite/skia/releases).
+
+Skia is a 2D graphic library developed by Google Inc., you can find
+the official website in [skia.org](https://skia.org).
+
+This fork is used to compile Skia automatically for
+[laf](https://github.com/aseprite/laf) and
+[Aseprite](https://github.com/aseprite/aseprite) using GitHub Actions.
+
+# Building Skia
+
+In the following sections you will find straightforward steps to
+compile Skia. You can always check the [official Skia
+instructions](https://skia.org/user/build) and select the OS you are
+building for. [Aseprite](https://github.com/aseprite/aseprite) and
+[laf](https://github.com/aseprite/laf) use the **`aseprite-m81`** branch.
+So remember to checkout that specific branch.
+
+These are the platform-specific steps to compile Skia:
+
+* [Skia on Windows](#skia-on-windows)
+* [Skia on macOS](#skia-on-macos)
+* [Skia on Linux](#skia-on-linux)
+
+After this you should have all Skia libraries compiled. After that,
+when you compile laf or Aseprite remember to add
+`-DSKIA_DIR=$HOME/deps/skia` parameter to your `cmake` call and all
+other parameters.
+
+## Skia on Windows
+
+Download
+[Google depot tools](https://storage.googleapis.com/chrome-infra/depot_tools.zip)
+and uncompress it in some place like `C:\deps\depot_tools`.
+
+[It's recommended to compile Skia with Clang](https://github.com/google/skia/blob/master/site/user/build.md#a-note-on-software-backend-performance)
+to get better performance. So you will need to [download Clang](http://releases.llvm.org/9.0.0/LLVM-9.0.0-win64.exe),
+and install it on a folder like `C:\deps\llvm` (a folder without whitespaces).
+
+Open a [developer command prompt](https://docs.microsoft.com/en-us/dotnet/framework/tools/developer-command-prompt-for-vs)
+or command line (`cmd.exe`) and call:
+
+    call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\Tools\VsDevCmd.bat" -arch=x64
+
+Then:
+
+    set PATH=C:\deps\depot_tools;%PATH%
+    cd C:\deps\depot_tools
+    gclient sync
+
+(The `gclient` command might print an error like
+`Error: client not configured; see 'gclient config'`.
+Just ignore it.)
+
+    cd C:\deps
+    git clone -b aseprite-m81 https://github.com/aseprite/skia.git
+    cd skia
+    set GIT_EXECUTABLE=git.bat
+    python tools/git-sync-deps
+
+(The `tools/git-sync-deps` will take some minutes because it downloads
+a lot of packages, please wait and re-run the same command in case it
+fails.)
+
+Finally, if you've downloaded Clang, use this command:
+
+    set PATH=C:\deps\llvm\bin;%PATH%
+    gn gen out/Release-x64 --args="is_debug=false is_official_build=true skia_use_system_expat=false skia_use_system_icu=false skia_use_system_libjpeg_turbo=false skia_use_system_libpng=false skia_use_system_libwebp=false skia_use_system_zlib=false skia_use_sfntly=false skia_use_freetype=true skia_use_harfbuzz=true skia_pdf_subset_harfbuzz=true skia_use_system_freetype2=false skia_use_system_harfbuzz=false target_cpu=""x64"" cc=""clang"" cxx=""clang++"" clang_win=""c:\deps\llvm"" win_vc=""C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC"" extra_cflags=[""-MT""]"
+    ninja -C out/Release-x64 skia modules
+
+If you haven't installed Clang, and want to compile Skia with MSVC
+(anyway it's not recommended because the performance penalty is too
+big), you can use the following commands instead:
+
+    gn gen out/Release-x64 --args="is_debug=false is_official_build=true skia_use_system_expat=false skia_use_system_icu=false skia_use_system_libjpeg_turbo=false skia_use_system_libpng=false skia_use_system_libwebp=false skia_use_system_zlib=false skia_use_sfntly=false skia_use_freetype=true skia_use_harfbuzz=true skia_pdf_subset_harfbuzz=true skia_use_system_freetype2=false skia_use_system_harfbuzz=false target_cpu=""x64"" win_vc=""C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC"" extra_cflags=[""-MT""]"
+    ninja -C out/Release-x64 skia modules
+
+## Skia on macOS
+
+These steps will create a `deps` folder in your home directory with a
+couple of subdirectories needed to build Skia (you can change the
+`$HOME/deps` with other directory). Some of these commands will take
+several minutes to finish:
+
+    mkdir $HOME/deps
+    cd $HOME/deps
+    git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
+    git clone -b aseprite-m81 https://github.com/aseprite/skia.git
+    export PATH="${PWD}/depot_tools:${PATH}"
+    cd skia
+    python tools/git-sync-deps
+    gn gen out/Release-x64 --args="is_official_build=true skia_use_system_expat=false skia_use_system_icu=false skia_use_libjpeg_turbo=false skia_use_system_libpng=false skia_use_system_libwebp=false skia_use_system_zlib=false extra_cflags_cc=[\"-frtti\"]"
+    ninja -C out/Release-x64 skia modules
+
+## Skia on Linux
+
+These steps will create a `deps` folder in your home directory with a
+couple of subdirectories needed to build Skia (you can change the
+`$HOME/deps` with other directory). Some of these commands will take
+several minutes to finish:
+
+    mkdir $HOME/deps
+    cd $HOME/deps
+    git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
+    git clone -b aseprite-m81 https://github.com/aseprite/skia.git
+    export PATH="${PWD}/depot_tools:${PATH}"
+    cd skia
+    python tools/git-sync-deps
+    gn gen out/Release-x64 --args="is_debug=false is_official_build=true skia_use_system_expat=false skia_use_system_icu=false skia_use_system_libjpeg_turbo=false skia_use_system_libpng=false skia_use_system_libwebp=false skia_use_system_zlib=false"
+    ninja -C out/Release-x64 skia modules

gn/toolchain/BUILD.gn

@@ -63,7 +63,8 @@ toolchain("msvc") {
   if (target_cpu == "x86") {
     # Toolchain asset includes a script that configures for x86 building.
     # We don't support x86 builds with local MSVC installations.
-    env_setup = "cmd /c $win_sdk/bin/SetEnv.cmd /x86 && "
+    # Setup the env before
+    #env_setup = "cmd /c $win_sdk\\bin\\SetEnv.cmd /x86 && "
   } else if (target_cpu == "arm64") {
     # ARM64 compiler is incomplete - it relies on DLLs located in the host toolchain directory.
     env_setup = "cmd /C set \"PATH=%PATH%;$win_vc\\Tools\\MSVC\\$win_toolchain_version\\bin\\HostX64\\x64\" && "

third_party/harfbuzz/BUILD.gn

@@ -22,11 +22,13 @@ if (skia_use_system_harfbuzz) {
       ".",
       _src,
     ]
+    include_dirs = [ "../externals/freetype/include" ]
     defines = [
       "HAVE_ICU",
       "HAVE_ICU_BUILTIN",
       "HAVE_INTEL_ATOMIC_PRIMITIVES",
       "HAVE_OT",
+      "HAVE_FREETYPE",
     ]
     deps = [
       "//third_party/icu",