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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 "platform/graphics/WebGraphicsContext3DProviderWrapper.h" |
| 11 #include "third_party/khronos/GLES2/gl2.h" |
| 12 #include "wtf/WeakPtr.h" |
| 13 |
| 14 namespace blink { |
| 15 |
| 16 class PLATFORM_EXPORT MailboxTextureHolder final : public TextureHolder { |
| 17 public: |
| 18 ~MailboxTextureHolder() override; |
| 19 |
| 20 bool isSkiaTextureHolder() final { return false; } |
| 21 bool isMailboxTextureHolder() final { return true; } |
| 22 unsigned sharedContextId() final; |
| 23 IntSize size() const final { return m_size; } |
| 24 bool currentFrameKnownToBeOpaque(Image::MetadataMode) final { return false; } |
| 25 |
| 26 gpu::Mailbox mailbox() final { return m_mailbox; } |
| 27 gpu::SyncToken syncToken() final { return m_syncToken; } |
| 28 void updateSyncToken(gpu::SyncToken syncToken) final { |
| 29 m_syncToken = syncToken; |
| 30 } |
| 31 |
| 32 // In WebGL's commit or transferToImageBitmap calls, it will call the |
| 33 // DrawingBuffer::transferToStaticBitmapImage function, which produces the |
| 34 // input parameters for this method. |
| 35 MailboxTextureHolder(const gpu::Mailbox&, |
| 36 const gpu::SyncToken&, |
| 37 unsigned textureIdToDeleteAfterMailboxConsumed, |
| 38 WeakPtr<WebGraphicsContext3DProviderWrapper>, |
| 39 IntSize mailboxSize); |
| 40 // This function turns a texture-backed SkImage into a mailbox and a |
| 41 // syncToken. |
| 42 MailboxTextureHolder(std::unique_ptr<TextureHolder>); |
| 43 |
| 44 private: |
| 45 void releaseTextureThreadSafe(); |
| 46 |
| 47 gpu::Mailbox m_mailbox; |
| 48 gpu::SyncToken m_syncToken; |
| 49 unsigned m_textureId; |
| 50 WeakPtr<WebGraphicsContext3DProviderWrapper> m_contextProvider; |
| 51 IntSize m_size; |
| 52 bool m_isConvertedFromSkiaTexture; |
| 53 }; |
| 54 |
| 55 } // namespace blink |
| 56 |
| 57 #endif // MailboxTextureHolder_h |
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