Animated Rotation

ui/gfx/compositor/compositor_gl.cc

 // Copyright (c) 2011 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 "ui/gfx/compositor/compositor_gl.h"
 
 // for CompositorGL::SchedulePaint
 #include <gtk/gtk.h>
 #include <gdk/gdkx.h>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/threading/thread_restrictions.h"
 #include "third_party/skia/include/core/SkDevice.h"
 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkRect.h"
 #include "third_party/skia/include/core/SkScalar.h"
+#include "ui/gfx/point3.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/transform.h"
 #include "ui/gfx/gl/gl_bindings.h"
 #include "ui/gfx/gl/gl_context.h"
 #include "ui/gfx/gl/gl_implementation.h"
 #include "ui/gfx/gl/gl_surface.h"
 
 // Wraps a simple GL program for drawing textures to the screen.
 // Need the declaration before the subclasses in the anonymous namespace below.
 class ui::TextureProgramGL {
@@ skipping 441 matching lines @@
 
 void CompositorGL::NotifyStart() {
   started_ = true;
   gl_context_->MakeCurrent(gl_surface_.get());
   glViewport(0, 0, size_.width(), size_.height());
   glColorMask(true, true, true, true);
 
 #if defined(DEBUG)
   // Clear to 'psychedelic' purple to make it easy to spot un-rendered regions.
   glClearColor(223.0 / 255, 0, 1, 1);
+#else
+  glClearColor(0, 0, 0, 0);
+#endif
+
   glClear(GL_COLOR_BUFFER_BIT);
-#endif
-  // Do not clear in release: root layer is responsible for drawing every pixel.
 }
 
 void CompositorGL::NotifyEnd() {
   DCHECK(started_);
   gl_surface_->SwapBuffers();
   started_ = false;
 }
 
 void CompositorGL::Blur(const gfx::Rect& bounds) {
   NOTIMPLEMENTED();
@@ skipping 21 matching lines @@
   // on this thread long enough to perform the GL bindings.
   // TODO(wjmaclean) Remove this when GL initialisation cleaned up.
   base::ThreadRestrictions::ScopedAllowIO allow_io;
   if (gfx::GLSurface::InitializeOneOff() &&
       gfx::GetGLImplementation() != gfx::kGLImplementationNone)
     return new CompositorGL(widget, size);
   return NULL;
 }
 
 }  // namespace ui