cc: Route offscreen context creation for compositor to the browser.

cc/resource_provider.h

 // 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.
 
 #ifndef CC_RESOURCE_PROVIDER_H_
 #define CC_RESOURCE_PROVIDER_H_
 
 #include <deque>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "cc/cc_export.h"
 #include "cc/output_surface.h"
 #include "cc/texture_copier.h"
 #include "cc/texture_mailbox.h"
 #include "cc/transferable_resource.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/gfx/size.h"
 
+class GrContext;
+
 namespace WebKit {
 class WebGraphicsContext3D;
 }
 
 namespace gfx {
 class Rect;
 class Vector2d;
 }
 
 namespace cc {
@@ skipping 19 matching lines @@
     static scoped_ptr<ResourceProvider> create(OutputSurface*);
 
     virtual ~ResourceProvider();
 
     WebKit::WebGraphicsContext3D* graphicsContext3D();
     TextureCopier* textureCopier() const { return m_textureCopier.get(); }
     int maxTextureSize() const { return m_maxTextureSize; }
     GLenum bestTextureFormat() const { return m_bestTextureFormat; }
     unsigned numResources() const { return m_resources.size(); }
 
+    WebKit::WebGraphicsContext3D* offscreenGraphicsContext3d() { return m_offscreenContext3d; }

[piman, 2013/02/05 22:42:48]

I don't think it belongs here, since it has nothing to do with resources. Could
we put it on the GLRenderer?

[danakj, 2013/02/05 22:56:00]

Oh, ya ok I'll give that a shot. The one problem I was trying to dodge is that
it has to go thru the Renderer class API which includes software mode. So then
passing a WGC3D thru there is weird.. ideas about that?

+    GrContext* offscreenGrContext() { return m_offscreenGrContext; }
+
+    void setOffscreenContexts(WebKit::WebGraphicsContext3D* context,
+                              GrContext* grContext)
+    {
+        m_offscreenContext3d = context;
+        m_offscreenGrContext = grContext;
+    }
+
+
     // Checks whether a resource is in use by a consumer.
     bool inUseByConsumer(ResourceId);
 
 
     // Producer interface.
 
     void setDefaultResourceType(ResourceType type) { m_defaultResourceType = type; }
     ResourceType defaultResourceType() const { return m_defaultResourceType; }
     ResourceType resourceType(ResourceId);
 
@@ skipping 210 matching lines @@
     void unlockForRead(ResourceId);
     const Resource* lockForWrite(ResourceId);
     void unlockForWrite(ResourceId);
     static void populateSkBitmapWithResource(SkBitmap*, const Resource*);
 
     bool transferResource(WebKit::WebGraphicsContext3D*, ResourceId, TransferableResource*);
     void deleteResourceInternal(ResourceMap::iterator it);
     void lazyAllocate(Resource*);
 
     OutputSurface* m_outputSurface;
+    WebKit::WebGraphicsContext3D* m_offscreenContext3d;
+    GrContext* m_offscreenGrContext;
     ResourceId m_nextId;
     ResourceMap m_resources;
     int m_nextChild;
     ChildMap m_children;
 
     ResourceType m_defaultResourceType;
     bool m_useTextureStorageExt;
     bool m_useTextureUsageHint;
     bool m_useShallowFlush;
     scoped_ptr<TextureUploader> m_textureUploader;
     scoped_ptr<AcceleratedTextureCopier> m_textureCopier;
     int m_maxTextureSize;
     GLenum m_bestTextureFormat;
 
     base::ThreadChecker m_threadChecker;
 
     DISALLOW_COPY_AND_ASSIGN(ResourceProvider);
 };
 
 }
 
 #endif  // CC_RESOURCE_PROVIDER_H_