Distribute binaries for SwANGLE support (fixes issue #3176)

Adds SwANGLE libraries that are required for software rendering on Windows
and Linux. Updates README.txt documentation accordingly.

cmake/cef_variables.cmake.in

@@ -222,8 +222,11 @@ if(OS_LINUX)
     libcef.so
     libEGL.so
     libGLESv2.so
+    libvk_swiftshader.so
+    libvulkan.so.1
     snapshot_blob.bin
     v8_context_snapshot.bin
+    vk_swiftshader_icd.json
     swiftshader
     )
 
@@ -470,6 +473,9 @@ if(OS_WINDOWS)
     libGLESv2.dll
     snapshot_blob.bin
     v8_context_snapshot.bin
+    vk_swiftshader.dll
+    vk_swiftshader_icd.json
+    vulkan-1.dll
     swiftshader
     )
 

tools/distrib/linux/README.redistrib.txt

@@ -47,14 +47,24 @@ run but any related functionality may become broken or disabled.
     These files contain non-localized resources used by CEF, Chromium and Blink.
     Without these files arbitrary Web components may display incorrectly.
 
-* Angle support.
+* ANGLE support.
   * libEGL.so
   * libGLESv2.so
-  Without these files HTML5 accelerated content like 2D canvas, 3D CSS and WebGL
+  Support for rendering of HTML5 content like 2D canvas, 3D CSS and WebGL.
-  will not function.
+  Without these files the aforementioned capabilities may fail.
 
-* SwiftShader support.
+* SwANGLE support.
+  * libvk_swiftshader.so
+  * libvulkan.so.1
+  * vk_swiftshader_icd.json
+  Support for software rendering of HTML5 content like 2D canvas, 3D CSS and
+  WebGL using SwiftShader's Vulkan library as ANGLE's Vulkan backend. Without
+  these files the aforementioned capabilities may fail when GPU acceleration is
+  disabled or unavailable.
+
+* SwiftShader support
   * swiftshader/libEGL.so
   * swiftshader/libGLESv2.so
-  Without these files WebGL will not function in software-only mode when the GPU
+  Deprecated support for software rendering using SwiftShader's GL libraries.
-  is not available or disabled.
+  Used as an alternative to SwANGLE when the `--use-gl=swiftshader-webgl`
+  command-line flag is specified.

tools/distrib/mac/README.redistrib.txt

@@ -15,10 +15,12 @@ cefclient.app/
       Chromium Embedded Framework.framework/
         Chromium Embedded Framework <= main application library
         Libraries/
-          libEGL.dylib <= angle support libraries
+          libEGL.dylib <= ANGLE support libraries
           libGLESv2.dylib <=^
-          libswiftshader_libEGL.dylib <= swiftshader support libraries
+          libswiftshader_libEGL.dylib <= SwiftShader support libraries
           libswiftshader_libGLESv2.dylib <=^
+          libvk_swiftshader.dylib <= SwANGLE support libraries
+          vk_swiftshader_icd.json <=^
         Resources/
           chrome_100_percent.pak <= non-localized resources and strings
           chrome_200_percent.pak <=^
@@ -91,14 +93,23 @@ run but any related functionality may become broken or disabled.
     These files contain non-localized resources used by CEF, Chromium and Blink.
     Without these files arbitrary Web components may display incorrectly.
 
-* Angle support.
+* ANGLE support.
   * Chromium Embedded Framework.framework/Libraries/libEGL.dylib
   * Chromium Embedded Framework.framework/Libraries/libGLESv2.dylib
-  Without these files HTML5 accelerated content like 2D canvas, 3D CSS and WebGL
+  Support for rendering of HTML5 content like 2D canvas, 3D CSS and WebGL.
-  will not function.
+  Without these files the aforementioned capabilities may fail.
 
-* SwiftShader support.
+* SwANGLE support.
+  * Chromium Embedded Framework.framework/Libraries/libvk_swiftshader.dylib
+  * Chromium Embedded Framework.framework/Libraries/vk_swiftshader_icd.json
+  Support for software rendering of HTML5 content like 2D canvas, 3D CSS and
+  WebGL using SwiftShader's Vulkan library as ANGLE's Vulkan backend. Without
+  these files the aforementioned capabilities may fail when GPU acceleration is
+  disabled or unavailable.
+
+* SwiftShader support
   * Chromium Embedded Framework.framework/Libraries/libswiftshader_libEGL.dylib
   * Chromium Embedded Framework.framework/Libraries/libswiftshader_libGLESv2.dylib
-  Without these files WebGL will not function in software-only mode when the GPU
+  Deprecated support for software rendering using SwiftShader's GL libraries.
-  is not available or disabled.
+  Used as an alternative to SwANGLE when the `--use-gl=swiftshader-webgl`
+  command-line flag is specified.

tools/distrib/win/README.redistrib.txt

@@ -48,15 +48,32 @@ run but any related functionality may become broken or disabled.
     These files contain non-localized resources used by CEF, Chromium and Blink.
     Without these files arbitrary Web components may display incorrectly.
 
-* Angle and Direct3D support.
+* Direct3D support.
-  * d3dcompiler_47.dll (required for Windows Vista and newer)
+  * d3dcompiler_47.dll
+  Support for GPU accelerated rendering of HTML5 content like 2D canvas, 3D CSS
+  and WebGL. Without this file the aforementioned capabilities may fail when GPU
+  acceleration is enabled (default in most cases). Use of this bundled version
+  is recommended instead of relying on the possibly old and untested system
+  installed version.
+
+* ANGLE support.
   * libEGL.dll
   * libGLESv2.dll
-  Without these files HTML5 accelerated content like 2D canvas, 3D CSS and WebGL
+  Support for rendering of HTML5 content like 2D canvas, 3D CSS and WebGL.
-  will not function.
+  Without these files the aforementioned capabilities may fail.
 
-* SwiftShader support.
+* SwANGLE support.
+  * vk_swiftshader.dll
+  * vk_swiftshader_icd.json
+  * vulkan-1.dll
+  Support for software rendering of HTML5 content like 2D canvas, 3D CSS and
+  WebGL using SwiftShader's Vulkan library as ANGLE's Vulkan backend. Without
+  these files the aforementioned capabilities may fail when GPU acceleration is
+  disabled or unavailable.
+
+* SwiftShader support
   * swiftshader/libEGL.dll
   * swiftshader/libGLESv2.dll
-  Without these files WebGL will not function in software-only mode when the GPU
+  Deprecated support for software rendering using SwiftShader's GL libraries.
-  is not available or disabled.
+  Used as an alternative to SwANGLE when the `--use-gl=swiftshader-webgl`
+  command-line flag is specified.

tools/make_distrib.py

@@ -852,6 +852,9 @@ if platform == 'windows':
       {'path': 'libGLESv2.dll'},
       {'path': 'snapshot_blob.bin', 'conditional': True},
       {'path': 'v8_context_snapshot.bin', 'conditional': True},
+      {'path': 'vk_swiftshader.dll'},
+      {'path': 'vk_swiftshader_icd.json'},
+      {'path': 'vulkan-1.dll'},
       {'path': 'swiftshader\\libEGL.dll'},
       {'path': 'swiftshader\\libGLESv2.dll'},
   ]
@@ -1167,8 +1170,11 @@ elif platform == 'linux':
       {'path': libcef_so},
       {'path': 'libEGL.so'},
       {'path': 'libGLESv2.so'},
+      {'path': 'libvk_swiftshader.so'},
+      {'path': 'libvulkan.so.1'},
       {'path': 'snapshot_blob.bin', 'conditional': True},
       {'path': 'v8_context_snapshot.bin', 'conditional': True},
+      {'path': 'vk_swiftshader_icd.json'},
       {'path': 'swiftshader/libEGL.so'},
       {'path': 'swiftshader/libGLESv2.so'},
   ]