OLD | NEW |
1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 | 5 // Temporary forwarding header |
6 #ifndef LayerTextureUpdater_h | 6 #include "cc/layer_texture_updater.h" |
7 #define LayerTextureUpdater_h | |
8 | |
9 #if USE(ACCELERATED_COMPOSITING) | |
10 | |
11 #include "CCPrioritizedTexture.h" | |
12 #include "GraphicsTypes3D.h" | |
13 #include <wtf/RefCounted.h> | |
14 | |
15 namespace cc { | |
16 | |
17 class IntRect; | |
18 class IntSize; | |
19 class TextureManager; | |
20 struct CCRenderingStats; | |
21 | |
22 class LayerTextureUpdater : public RefCounted<LayerTextureUpdater> { | |
23 public: | |
24 // Allows texture uploaders to store per-tile resources. | |
25 class Texture { | |
26 public: | |
27 virtual ~Texture(); | |
28 | |
29 CCPrioritizedTexture* texture() { return m_texture.get(); } | |
30 void swapTextureWith(scoped_ptr<CCPrioritizedTexture>& texture) { m_text
ure.swap(texture); } | |
31 virtual void prepareRect(const IntRect& /* sourceRect */, CCRenderingSta
ts&) { } | |
32 virtual void updateRect(CCResourceProvider*, const IntRect& sourceRect,
const IntSize& destOffset) = 0; | |
33 virtual bool backingResourceWasEvicted() const; | |
34 protected: | |
35 explicit Texture(scoped_ptr<CCPrioritizedTexture> texture); | |
36 | |
37 private: | |
38 scoped_ptr<CCPrioritizedTexture> m_texture; | |
39 }; | |
40 | |
41 LayerTextureUpdater() | |
42 { | |
43 turnOffVerifier(); // In the component build we don't have WTF threading
initialized in this DLL so the thread verifier explodes. | |
44 } | |
45 | |
46 virtual ~LayerTextureUpdater() { } | |
47 | |
48 enum SampledTexelFormat { | |
49 SampledTexelFormatRGBA, | |
50 SampledTexelFormatBGRA, | |
51 SampledTexelFormatInvalid, | |
52 }; | |
53 virtual PassOwnPtr<Texture> createTexture(CCPrioritizedTextureManager*) = 0; | |
54 // Returns the format of the texel uploaded by this interface. | |
55 // This format should not be confused by texture internal format. | |
56 // This format specifies the component order in the sampled texel. | |
57 // If the format is TexelFormatBGRA, vec4.x is blue and vec4.z is red. | |
58 virtual SampledTexelFormat sampledTexelFormat(GC3Denum textureFormat) = 0; | |
59 // The |resultingOpaqueRect| gives back a region of the layer that was paint
ed opaque. If the layer is marked opaque in the updater, | |
60 // then this region should be ignored in preference for the entire layer's a
rea. | |
61 virtual void prepareToUpdate(const IntRect& contentRect, const IntSize& tile
Size, float contentsWidthScale, float contentsHeightScale, IntRect& resultingOpa
queRect, CCRenderingStats&) { } | |
62 | |
63 // Set true by the layer when it is known that the entire output is going to
be opaque. | |
64 virtual void setOpaque(bool) { } | |
65 }; | |
66 | |
67 } // namespace cc | |
68 #endif // USE(ACCELERATED_COMPOSITING) | |
69 #endif // LayerTextureUpdater_h | |
OLD | NEW |