Source/WebCore/html/canvas/WebGLSync.h

/*
 * Copyright (C) 2015-2017 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

#pragma once

#if ENABLE(WEBGL)

#include "GraphicsContextGL.h"
#include "WebGLSharedObject.h"

namespace WebCore {

class WebGLSync final : public WebGLSharedObject {
public:
    virtual ~WebGLSync();

    static Ref<WebGLSync> create(WebGLRenderingContextBase&);

    void updateCache(WebGLRenderingContextBase&);
    GCGLint getCachedResult(GCGLenum pname) const;
    bool isSignaled() const;
    void scheduleAllowCacheUpdate(WebGLRenderingContextBase&);

private:
    WebGLSync(WebGLRenderingContextBase&);

    bool m_allowCacheUpdate = { false };
    GCGLint m_syncStatus = { GraphicsContextGL::UNSIGNALED };
    GCGLsync m_sync;

    void deleteObjectImpl(const AbstractLocker&, GraphicsContextGL*, PlatformGLObject) override;
};

} // namespace WebCore

#endif