Added support for CSS filters to the software compositor.

cc/software_renderer.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/software_renderer.h"
 
 #include "cc/debug_border_draw_quad.h"
 #include "cc/render_pass_draw_quad.h"
 #include "cc/solid_color_draw_quad.h"
 #include "cc/texture_draw_quad.h"
@@ skipping 260 matching lines @@
                                             toSkRect(quadVertexRect()),
                                             &m_skCurrentPaint);
 }
 
 void SoftwareRenderer::drawRenderPassQuad(const DrawingFrame& frame, const RenderPassDrawQuad* quad)
 {
     CachedResource* contentTexture = m_renderPassTextures.get(quad->renderPassId());
     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());
 
     SkRect destRect = toSkRect(quadVertexRect());
 
     const SkBitmap* content = lock.skBitmap();
 
     SkRect contentRect;
     content->getBounds(&contentRect);
 
     SkMatrix contentMat;
     contentMat.setRectToRect(contentRect, destRect, SkMatrix::kFill_ScaleToFit);
 
     SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(*content,
                                                                SkShader::kClamp_TileMode,
                                                                SkShader::kClamp_TileMode));
     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());
 
         const SkBitmap* mask = maskLock.skBitmap();
 
         SkRect maskRect = SkRect::MakeXYWH(
             quad->maskTexCoordOffsetX() * mask->width(),
             quad->maskTexCoordOffsetY() * mask->height(),
             quad->maskTexCoordScaleX() * mask->width(),
             quad->maskTexCoordScaleY() * mask->height());
@@ skipping 45 matching lines @@
 }
 
 void SoftwareRenderer::setVisible(bool visible)
 {
     if (m_visible == visible)
         return;
     m_visible = visible;
 }
 
 }  // namespace cc