Added support for CSS filters to the software compositor.

cc/software_renderer.cc

Index: cc/software_renderer.cc
diff --git a/cc/software_renderer.cc b/cc/software_renderer.cc
index 78a92294e6e0637063f60f81167a12f7934ee2cb..5a6d42d8527822f5d47db43db51268282f8eaffd 100644
--- a/cc/software_renderer.cc
+++ b/cc/software_renderer.cc
@@ -278,6 +278,11 @@ void SoftwareRenderer::drawRenderPassQuad(const DrawingFrame& frame, const Rende
     if (!contentTexture || !contentTexture->id())
         return;
 
+    const RenderPass* renderPass = frame.renderPassesById->get(quad->renderPassId());
+    DCHECK(renderPass);
+    if (!renderPass)
+        return;
+
     DCHECK(isSoftwareResource(contentTexture->id()));
     ResourceProvider::ScopedReadLockSoftware lock(m_resourceProvider, contentTexture->id());
 
@@ -297,6 +302,10 @@ void SoftwareRenderer::drawRenderPassQuad(const DrawingFrame& frame, const Rende
     shader->setLocalMatrix(contentMat);
     m_skCurrentPaint.setShader(shader);
 
+    SkImageFilter* filter = renderPass->filter();
+    if (filter)
+        m_skCurrentPaint.setImageFilter(filter);

[Stephen White, 2012/11/14 01:07:17]

You'll only get non-NULL SkImageFIlters here when the new path is forced on in
GraphicsLayerChromium over in WebKit-land (but you knew that).

[slavi, 2012/11/14 01:17:43]

I know. And the plan is to always get a non-NULL SkImageFilters if there is a
filter on the layer in the future. Keep me posted when that happens.

+
     if (quad->maskResourceId()) {
         ResourceProvider::ScopedReadLockSoftware maskLock(m_resourceProvider, quad->maskResourceId());