Index: cc/layer_texture_updater.h |
diff --git a/cc/layer_texture_updater.h b/cc/layer_texture_updater.h |
index 638cbb270ce9b24689d5095baf174ade4f4d1a13..89fc520475a64d1261bc27a0c7916b1745b55b05 100644 |
--- a/cc/layer_texture_updater.h |
+++ b/cc/layer_texture_updater.h |
@@ -1,3 +1,69 @@ |
-// Copyright 2012 The Chromium Authors. All rights reserved. |
+// Copyright 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. |
+ |
+ |
+#ifndef LayerTextureUpdater_h |
+#define LayerTextureUpdater_h |
+ |
+#if USE(ACCELERATED_COMPOSITING) |
+ |
+#include "CCPrioritizedTexture.h" |
+#include "GraphicsTypes3D.h" |
+#include <wtf/RefCounted.h> |
+ |
+namespace cc { |
+ |
+class IntRect; |
+class IntSize; |
+class TextureManager; |
+struct CCRenderingStats; |
+ |
+class LayerTextureUpdater : public RefCounted<LayerTextureUpdater> { |
+public: |
+ // Allows texture uploaders to store per-tile resources. |
+ class Texture { |
+ public: |
+ virtual ~Texture(); |
+ |
+ CCPrioritizedTexture* texture() { return m_texture.get(); } |
+ void swapTextureWith(scoped_ptr<CCPrioritizedTexture>& texture) { m_texture.swap(texture); } |
+ virtual void prepareRect(const IntRect& /* sourceRect */, CCRenderingStats&) { } |
+ virtual void updateRect(CCResourceProvider*, const IntRect& sourceRect, const IntSize& destOffset) = 0; |
+ virtual bool backingResourceWasEvicted() const; |
+ protected: |
+ explicit Texture(scoped_ptr<CCPrioritizedTexture> texture); |
+ |
+ private: |
+ scoped_ptr<CCPrioritizedTexture> m_texture; |
+ }; |
+ |
+ LayerTextureUpdater() |
+ { |
+ turnOffVerifier(); // In the component build we don't have WTF threading initialized in this DLL so the thread verifier explodes. |
+ } |
+ |
+ virtual ~LayerTextureUpdater() { } |
+ |
+ enum SampledTexelFormat { |
+ SampledTexelFormatRGBA, |
+ SampledTexelFormatBGRA, |
+ SampledTexelFormatInvalid, |
+ }; |
+ virtual PassOwnPtr<Texture> createTexture(CCPrioritizedTextureManager*) = 0; |
+ // Returns the format of the texel uploaded by this interface. |
+ // This format should not be confused by texture internal format. |
+ // This format specifies the component order in the sampled texel. |
+ // If the format is TexelFormatBGRA, vec4.x is blue and vec4.z is red. |
+ virtual SampledTexelFormat sampledTexelFormat(GC3Denum textureFormat) = 0; |
+ // The |resultingOpaqueRect| gives back a region of the layer that was painted opaque. If the layer is marked opaque in the updater, |
+ // then this region should be ignored in preference for the entire layer's area. |
+ virtual void prepareToUpdate(const IntRect& contentRect, const IntSize& tileSize, float contentsWidthScale, float contentsHeightScale, IntRect& resultingOpaqueRect, CCRenderingStats&) { } |
+ |
+ // Set true by the layer when it is known that the entire output is going to be opaque. |
+ virtual void setOpaque(bool) { } |
+}; |
+ |
+} // namespace cc |
+#endif // USE(ACCELERATED_COMPOSITING) |
+#endif // LayerTextureUpdater_h |