Source/WebCore/platform/graphics/GraphicsContext3DAttributes.h

/*
 * Copyright (C) 2016 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. AND ITS CONTRIBUTORS ``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 ITS 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
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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 */

#pragma once

namespace WebCore {

enum class GraphicsContext3DPowerPreference {
    Default,
    LowPower,
    HighPerformance
};

struct GraphicsContext3DAttributes {
    // WebGLContextAttributes
    bool alpha { true };
    bool depth { true };
    bool stencil { false };
    bool antialias { true };
    bool premultipliedAlpha { true };
    bool preserveDrawingBuffer { false };
    bool failIfMajorPerformanceCaveat { false };
    using PowerPreference = GraphicsContext3DPowerPreference;
    PowerPreference powerPreference { PowerPreference::Default };

    // Additional attributes.
    bool shareResources { true };
    bool isWebGL2 { false };
    bool noExtensions { false };
    float devicePixelRatio { 1 };
    PowerPreference initialPowerPreference { PowerPreference::Default };
};

}