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// Copyright 2016 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 MailboxTextureHolder_h
#define MailboxTextureHolder_h
#include "platform/PlatformExport.h"
#include "platform/graphics/TextureHolder.h"
#include "platform/graphics/WebGraphicsContext3DProviderWrapper.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "wtf/WeakPtr.h"
namespace blink {
class PLATFORM_EXPORT MailboxTextureHolder final : public TextureHolder {
public:
~MailboxTextureHolder() override;
bool isSkiaTextureHolder() final { return false; }
bool isMailboxTextureHolder() final { return true; }
unsigned sharedContextId() final;
IntSize size() const final { return m_size; }
bool currentFrameKnownToBeOpaque(Image::MetadataMode) final { return false; }
gpu::Mailbox mailbox() final { return m_mailbox; }
gpu::SyncToken syncToken() final { return m_syncToken; }
void updateSyncToken(gpu::SyncToken syncToken) final {
m_syncToken = syncToken;
}
// In WebGL's commit or transferToImageBitmap calls, it will call the
// DrawingBuffer::transferToStaticBitmapImage function, which produces the
// input parameters for this method.
MailboxTextureHolder(const gpu::Mailbox&,
const gpu::SyncToken&,
unsigned textureIdToDeleteAfterMailboxConsumed,
WeakPtr<WebGraphicsContext3DProviderWrapper>,
IntSize mailboxSize);
// This function turns a texture-backed SkImage into a mailbox and a
// syncToken.
MailboxTextureHolder(std::unique_ptr<TextureHolder>);
private:
void releaseTextureThreadSafe();
gpu::Mailbox m_mailbox;
gpu::SyncToken m_syncToken;
unsigned m_textureId;
WeakPtr<WebGraphicsContext3DProviderWrapper> m_contextProvider;
IntSize m_size;
bool m_isConvertedFromSkiaTexture;
};
} // namespace blink
#endif // MailboxTextureHolder_h
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