/*
 * 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.
 */

#if defined(ENABLE_WEBGL2) && ENABLE_WEBGL2
typedef (WebGLRenderingContext or WebGL2RenderingContext) WebXRWebGLRenderingContext;
#else
typedef (WebGLRenderingContext) WebXRWebGLRenderingContext;
#endif

// https://immersive-web.github.io/webxr/#xrwebgllayer
[
    EnabledBySetting=WebXREnabled,
    Conditional=WEBXR,
    SecureContext,
    Exposed=Window,
    JSGenerateToJSObject,
    JSGenerateToNativeObject,
    InterfaceName=XRWebGLLayer
] interface WebXRWebGLLayer : WebXRLayer {
    constructor(WebXRSession session, WebXRWebGLRenderingContext context, optional XRWebGLLayerInit layerInit);

    // Attributes
    readonly attribute boolean antialias;
    readonly attribute boolean ignoreDepthValues;
    // FIXME: Support 'fixedFoveation'.
    // attribute float? fixedFoveation;

    [SameObject] readonly attribute WebGLFramebuffer framebuffer;
    readonly attribute unsigned long framebufferWidth;
    readonly attribute unsigned long framebufferHeight;

    // Methods
    WebXRViewport? getViewport(WebXRView view);

    // Static Methods
    static double getNativeFramebufferScaleFactor(WebXRSession session);
};