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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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_MAILBOX_TEXTURE_HOLDER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_MAILBOX_TEXTURE_HOLDER_H_
#include "base/memory/weak_ptr.h"
#include "base/single_thread_task_runner.h"
#include "third_party/blink/renderer/platform/graphics/graphics_types.h"
#include "third_party/blink/renderer/platform/graphics/texture_holder.h"
#include "third_party/blink/renderer/platform/graphics/web_graphics_context_3d_provider_wrapper.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/khronos/GLES2/gl2.h"
namespace blink {
class PLATFORM_EXPORT MailboxTextureHolder final : public TextureHolder {
public:
~MailboxTextureHolder() override;
bool IsSkiaTextureHolder() final { return false; }
bool IsMailboxTextureHolder() final { return true; }
IntSize Size() const final { return size_; }
bool CurrentFrameKnownToBeOpaque() final { return false; }
bool IsValid() const final;
bool IsCrossThread() const final;
const gpu::Mailbox& GetMailbox() const final { return mailbox_; }
const gpu::SyncToken& GetSyncToken() const final { return sync_token_; }
void UpdateSyncToken(gpu::SyncToken sync_token) final {
sync_token_ = sync_token;
}
void Sync(MailboxSyncMode) final;
// 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 texture_id_to_delete_after_mailbox_consumed,
base::WeakPtr<WebGraphicsContext3DProviderWrapper>&&,
IntSize mailbox_size);
// This function turns a texture-backed SkImage into a mailbox and a
// syncToken.
MailboxTextureHolder(std::unique_ptr<TextureHolder>, GLenum filter);
private:
void InitCommon();
gpu::Mailbox mailbox_;
gpu::SyncToken sync_token_;
unsigned texture_id_;
IntSize size_;
bool is_converted_from_skia_texture_;
scoped_refptr<base::SingleThreadTaskRunner> texture_thread_task_runner_;
PlatformThreadId thread_id_;
bool did_issue_ordering_barrier_ = false;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_MAILBOX_TEXTURE_HOLDER_H_
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