/*
 * Copyright (C) 2020 Igalia S.L. 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
 * 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.
 */

#include "config.h"
#include "WebXRRenderState.h"

#if ENABLE(WEBXR)

#include "WebXRWebGLLayer.h"
#include "XRRenderStateInit.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/MathExtras.h>

namespace WebCore {

WTF_MAKE_ISO_ALLOCATED_IMPL(WebXRRenderState);

Ref<WebXRRenderState> WebXRRenderState::create(XRSessionMode mode)
{
    // https://immersive-web.github.io/webxr/#initialize-the-render-state
    // depthNear, depthFar and baseLayer are initialized in the class definition
    return adoptRef(*new WebXRRenderState(mode == XRSessionMode::Inline ? makeOptional(piOverTwoDouble) : WTF::nullopt));
}

WebXRRenderState::WebXRRenderState(Optional<double>&& inlineVerticalFieldOfView)
    : m_inlineVerticalFieldOfView(WTFMove(inlineVerticalFieldOfView))
{
}

WebXRRenderState::WebXRRenderState(const XRRenderStateInit&)
{
}

WebXRRenderState::~WebXRRenderState() = default;

double WebXRRenderState::depthNear() const
{
    return m_depth.near;
}

double WebXRRenderState::depthFar() const
{
    return m_depth.far;
}

Optional<double> WebXRRenderState::inlineVerticalFieldOfView() const
{
    return m_inlineVerticalFieldOfView;
}

RefPtr<WebXRWebGLLayer> WebXRRenderState::baseLayer() const
{
    return m_baseLayer;
}

} // namespace WebCore

#endif // ENABLE(WEBXR)