XRWebGLLayer.h - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_XRWebGLLayer_h_

#define mozilla_dom_XRWebGLLayer_h_

#include "mozilla/DOMEventTargetHelper.h"

#include "mozilla/dom/WebXRBinding.h"

#include "mozilla/dom/XRSession.h"

#include "nsICanvasRenderingContextInternal.h"

#include "WebGLTypes.h"

#include "gfxVR.h"

namespace mozilla {

class WebGLFramebufferJS;

class ClientWebGLContext;

namespace dom {

class XRSession;

class XRView;

class XRViewport;

class WebGLRenderingContextOrWebGL2RenderingContext;

struct XRWebGLLayerInit;

class XRWebGLLayer final : public nsWrapperCache {

 public:

  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(XRWebGLLayer)

  NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(XRWebGLLayer)

  explicit XRWebGLLayer(

      nsISupports* aParent, XRSession& aSession, bool aIgnoreDepthValues,

      double aFramebufferScaleFactor,

      RefPtr<mozilla::ClientWebGLContext> aWebGLContext,

      RefPtr<WebGLFramebufferJS> aFramebuffer,

      const Maybe<const webgl::OpaqueFramebufferOptions>& aOptions);

  // WebIDL Boilerplate

  JSObject* WrapObject(JSContext* aCx,

                       JS::Handle<JSObject*> aGivenProto) override;

  nsISupports* GetParentObject() const;

  // WebIDL Members

  static already_AddRefed<XRWebGLLayer> Constructor(

      const GlobalObject& aGlobal, XRSession& aSession,

      const WebGLRenderingContextOrWebGL2RenderingContext& aXRWebGLContext,

      const XRWebGLLayerInit& aXRWebGLLayerInitDict, ErrorResult& aRv);

  bool Depth();

  bool Stencil();

  bool Alpha();

  bool Antialias();

  bool IgnoreDepthValues();

  WebGLFramebufferJS* GetFramebuffer();

  uint32_t FramebufferWidth();

  uint32_t FramebufferHeight();

  already_AddRefed<XRViewport> GetViewport(const XRView& aView);

  static double GetNativeFramebufferScaleFactor(const GlobalObject& aGlobal,

                                                const XRSession& aSession);

  // Non-WebIDL Members

  void StartAnimationFrame();

  void EndAnimationFrame();

  HTMLCanvasElement* GetCanvas();

  void SessionEnded();

 private:

  void DeleteFramebuffer();

  virtual ~XRWebGLLayer();

  nsCOMPtr<nsISupports> mParent;

 public:

  RefPtr<XRSession> mSession;

  RefPtr<mozilla::ClientWebGLContext> mWebGL;

  double mFramebufferScaleFactor;

  bool mCompositionDisabled;

 private:

  bool mIgnoreDepthValues;

  RefPtr<WebGLFramebufferJS> mFramebuffer;

  RefPtr<XRViewport> mLeftViewport;

  RefPtr<XRViewport> mRightViewport;

  Maybe<const webgl::OpaqueFramebufferOptions> mFramebufferOptions;

};

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_XRWebGLLayer_h_