2010-03-18 Vangelis Kokkevis <vangelis@chromium.org>

        Reviewed by Adam Barth.

        Implement software composited graphics layers in Chromium using the Skia library.
        https://bugs.webkit.org/show_bug.cgi?id=35557
        This is an initial step in the implementation. Layer compositing is functioning
        but not optimized in any way. Subsesquent check-ins will be necessary to fine tune
        it.

        Test: No new exposed functionality so no new tests.

        * WebCore.gypi:
          Added new source files to the chromium build
        * platform/graphics/GraphicsLayer.h:
          Added necessary typedef's and forward declarations for Chromium.
        * platform/graphics/skia/GraphicsLayerSkia.cpp: Added.
        * platform/graphics/skia/GraphicsLayerSkia.h: Added.
          Declaration and implementation of the platform-specific GraphicsLayer class.
        * platform/graphics/skia/LayerRendererSkia.cpp: Added.
        * platform/graphics/skia/LayerRendererSkia.h: Added.
          Declaration and implementation of the Skia-based software compositor.
        * platform/graphics/skia/LayerSkia.cpp: Added.
        * platform/graphics/skia/LayerSkia.h: Added.
          Declaration and implementation of a compositable layer that uses a Skia canvas
          for backing store.
2010-03-18  Vangelis Kokkevis  <vangelis@chromium.org>

        Reviewed by Adam Barth.

        Adding support for the ACCELERATED_COMPOSITING render path to Chromium.
        https://bugs.webkit.org/show_bug.cgi?id=35557
        Currently compositing of layers is performed via s/w compositor which relies on Skia. This is an initial check-in
        and it's only been tested on Windows. Compiling the code requires seting "use_accelerated_compositing=1"
        to GYP_DEFINES. The update of layer contents and compositing is fairly inefficient but this will be fixed in
        subsequent check-ins.

        * src/ChromeClientImpl.cpp:
        (WebKit::ChromeClientImpl::attachRootGraphicsLayer):
        (WebKit::ChromeClientImpl::scheduleCompositingLayerSync):
        * src/ChromeClientImpl.h:
        (WebKit::ChromeClientImpl::setNeedsOneShotDrawingSynchronization):
         Added methods required by the RenderLayerCompositor

        * src/WebFrameImpl.cpp:
        (WebKit::WebFrameImpl::paintWithContext):
        (WebKit::WebFrameImpl::paint):
        * src/WebFrameImpl.h:
        Split WebFrameImpl::paint() into two methods to make it possible to call the paint
        routine with an existing GraphicsContext, which is necessary for painting the root layer into
        its own backing surface.

        * src/WebViewImpl.cpp:
        (WebKit::WebViewImpl::WebViewImpl):
        (WebKit::WebViewImpl::paint):
        Modified method to handle the accelerated compositing path. Now, when doing accelerated compositing,
        paint() results in repainting the contents of the root layer and then doing a composite operation.
        (WebKit::WebViewImpl::setRootGraphicsLayer):
        (WebKit::WebViewImpl::setAcceleratedCompositing):
        (WebKit::WebViewImpl::updateRootLayerContents):
        (WebKit::WebViewImpl::setRootLayerNeedsDisplay):
        * src/WebViewImpl.h:
        (WebKit::WebViewImpl::isAcceleratedCompositing):

Canonical link: https://commits.webkit.org/47506@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@56212 268f45cc-cd09-0410-ab3c-d52691b4dbfc

WebCore/ChangeLog

@@ -1,3 +1,30 @@
+2010-03-18  Vangelis Kokkevis  <vangelis@chromium.org>
+
+        Reviewed by Adam Barth.
+
+        Implement software composited graphics layers in Chromium using the Skia library.
+        https://bugs.webkit.org/show_bug.cgi?id=35557
+        This is an initial step in the implementation. Layer compositing is functioning
+        but not optimized in any way. Subsesquent check-ins will be necessary to fine tune
+        it.
+
+        Test: No new exposed functionality so no new tests.
+
+        * WebCore.gypi:
+          Added new source files to the chromium build
+        * platform/graphics/GraphicsLayer.h:
+          Added necessary typedef's and forward declarations for Chromium.
+        * platform/graphics/skia/GraphicsLayerSkia.cpp: Added.
+        * platform/graphics/skia/GraphicsLayerSkia.h: Added.
+          Declaration and implementation of the platform-specific GraphicsLayer class.
+        * platform/graphics/skia/LayerRendererSkia.cpp: Added.
+        * platform/graphics/skia/LayerRendererSkia.h: Added.
+          Declaration and implementation of the Skia-based software compositor.
+        * platform/graphics/skia/LayerSkia.cpp: Added.
+        * platform/graphics/skia/LayerSkia.h: Added.
+          Declaration and implementation of a compositable layer that uses a Skia canvas
+          for backing store.
+
 2010-03-18  Kenneth Rohde Christiansen  <kenneth@webkit.org>
 
         Reviewed by Darin Adler.

WebCore/WebCore.gypi

@@ -2176,10 +2176,16 @@
             'platform/graphics/skia/GraphicsContextPlatformPrivate.h',
             'platform/graphics/skia/GraphicsContextSkia.cpp',
             'platform/graphics/skia/GraphicsContext3DSkia.cpp',
+            'platform/graphics/skia/GraphicsLayerSkia.cpp',
+            'platform/graphics/skia/GraphicsLayerSkia.h',
             'platform/graphics/skia/ImageBufferSkia.cpp',
             'platform/graphics/skia/ImageSkia.cpp',
             'platform/graphics/skia/IntPointSkia.cpp',
             'platform/graphics/skia/IntRectSkia.cpp',
+            'platform/graphics/skia/LayerRendererSkia.cpp',
+            'platform/graphics/skia/LayerRendererSkia.h',
+            'platform/graphics/skia/LayerSkia.cpp',
+            'platform/graphics/skia/LayerSkia.h',
             'platform/graphics/skia/NativeImageSkia.cpp',
             'platform/graphics/skia/NativeImageSkia.h',
             'platform/graphics/skia/PathSkia.cpp',

WebCore/platform/graphics/GraphicsLayer.h

@@ -63,6 +63,12 @@ typedef void* NativeLayer;
 class QGraphicsItem;
 typedef QGraphicsItem PlatformLayer;
 typedef QGraphicsItem* NativeLayer;
+#elif PLATFORM(CHROMIUM)
+namespace WebCore {
+class LayerSkia;
+typedef LayerSkia PlatformLayer;
+typedef void* NativeLayer;
+}
 #else
 typedef void* PlatformLayer;
 typedef void* NativeLayer;