Added some instrumentation to the software compositor.

cc/direct_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/direct_renderer.h"
 
 #include <vector>
 
+#include "base/debug/trace_event.h"
 #include "cc/math_util.h"
 #include "ui/gfx/rect_conversions.h"
 #include <public/WebTransformationMatrix.h>
 
 using WebKit::WebTransformationMatrix;
 
 static WebTransformationMatrix orthoProjectionMatrix(float left, float right, float bottom, float top)
 {
     // Use the standard formula to map the clipping frustum to the cube from
     // [-1, -1, -1] to [1, 1, 1].
@@ skipping 126 matching lines @@
     for (size_t i = 0; i < renderPassesInDrawOrder.size(); ++i) {
         if (!m_renderPassTextures.contains(renderPassesInDrawOrder[i]->id())) {
           scoped_ptr<CachedResource> texture = CachedResource::create(m_resourceProvider);
             m_renderPassTextures.set(renderPassesInDrawOrder[i]->id(), texture.Pass());
         }
     }
 }
 
 void DirectRenderer::drawFrame(const RenderPassList& renderPassesInDrawOrder, const RenderPassIdHashMap& renderPassesById)
 {
+    TRACE_EVENT0("cc", "DirectRenderer::drawFrame");
     const RenderPass* rootRenderPass = renderPassesInDrawOrder.back();
     DCHECK(rootRenderPass);
 
     DrawingFrame frame;
     frame.renderPassesById = &renderPassesById;
     frame.rootRenderPass = rootRenderPass;
     frame.rootDamageRect = capabilities().usingPartialSwap ? rootRenderPass->damageRect() : rootRenderPass->outputRect();
     frame.rootDamageRect.Intersect(gfx::Rect(gfx::Point(), viewportSize()));
 
     beginDrawingFrame(frame);
     for (size_t i = 0; i < renderPassesInDrawOrder.size(); ++i)
         drawRenderPass(frame, renderPassesInDrawOrder[i]);
     finishDrawingFrame(frame);
 }
 
 void DirectRenderer::drawRenderPass(DrawingFrame& frame, const RenderPass* renderPass)
 {
+    TRACE_EVENT0("cc", "DirectRenderer::drawRenderPass");
     if (!useRenderPass(frame, renderPass))
         return;
 
     frame.scissorRectInRenderPassSpace = frame.currentRenderPass->outputRect();
     if (frame.rootDamageRect != frame.rootRenderPass->outputRect()) {
         WebTransformationMatrix inverseTransformToRoot = frame.currentRenderPass->transformToRootTarget().inverse();
         gfx::RectF damageRectInRenderPassSpace = MathUtil::projectClippedRect(inverseTransformToRoot, frame.rootDamageRect);
         frame.scissorRectInRenderPassSpace.Intersect(damageRectInRenderPassSpace);
     }
 
@@ skipping 46 matching lines @@
     return pass->outputRect().size();
 }
 
 // static
 GLenum DirectRenderer::renderPassTextureFormat(const RenderPass*)
 {
     return GL_RGBA;
 }
 
 }  // namespace cc