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Side by Side Diff: third_party/WebKit/Source/platform/graphics/MailboxTextureHolder.h

Issue 2455983005: Refactor AcceleratedStaticBitmapImage (Closed)
Patch Set: No long keep WeakPtr<DrawingBuffer> Created 4 years, 1 month ago
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1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef MailboxTextureHolder_h
6 #define MailboxTextureHolder_h
7
8 #include "platform/PlatformExport.h"
9 #include "platform/graphics/TextureHolder.h"
10 #include "third_party/khronos/GLES2/gl2.h"
11 #include "wtf/WeakPtr.h"
12
13 namespace blink {
14
15 class WebGraphicsContext3DProviderWrapper;
16
17 class PLATFORM_EXPORT MailboxTextureHolder final : public TextureHolder {
18 public:
19 ~MailboxTextureHolder() override;
20
21 bool isSkiaTextureHolder() final { return false; }
22 bool isMailboxTextureHolder() final { return true; }
23 unsigned sharedContextId() final;
24 IntSize size() const final { return m_size; }
25 bool currentFrameKnownToBeOpaque(Image::MetadataMode) final { return false; }
26
27 gpu::Mailbox mailbox() final { return m_mailbox; }
28 gpu::SyncToken syncToken() final { return m_syncToken; }
29 void updateSyncToken(gpu::SyncToken syncToken) final {
30 m_syncToken = syncToken;
31 }
32
33 // In WebGL's commit or transferToImageBitmap calls, it will call the
34 // DrawingBuffer::transferToStaticBitmapImage function, which produces the
35 // input parameters for this method.
36 MailboxTextureHolder(const gpu::Mailbox&,
37 const gpu::SyncToken&,
38 unsigned textureIdToDeleteAfterMailboxConsumed,
39 WeakPtr<WebGraphicsContext3DProviderWrapper>,
40 IntSize mailboxSize);
41 // This function turns a texture-backed SkImage into a mailbox and a
42 // syncToken.
43 MailboxTextureHolder(std::unique_ptr<TextureHolder>);
44
45 private:
46 void releaseTextureThreadSafe();
47
48 gpu::Mailbox m_mailbox;
49 gpu::SyncToken m_syncToken;
50 unsigned m_textureId;
51 WeakPtr<WebGraphicsContext3DProviderWrapper> m_contextProvider;
52 IntSize m_size;
53 bool m_isConvertedFromSkiaTexture;
54 };
55
56 } // namespace blink
57
58 #endif // MailboxTextureHolder_h
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