dom/canvas/XRWebGLLayer.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_XRWebGLLayer_h_
   8 #define mozilla_dom_XRWebGLLayer_h_
   9
  10 #include "mozilla/DOMEventTargetHelper.h"
  11 #include "mozilla/dom/WebXRBinding.h"
  12 #include "mozilla/dom/XRSession.h"
  13 #include "nsICanvasRenderingContextInternal.h"
  14 #include "WebGLTypes.h"
  15
  16 #include "gfxVR.h"
  17
  18 namespace mozilla {
  19 class WebGLFramebufferJS;
  20 class ClientWebGLContext;
  21 namespace dom {
  22 class XRSession;
  23 class XRView;
  24 class XRViewport;
  25 class WebGLRenderingContextOrWebGL2RenderingContext;
  26 struct XRWebGLLayerInit;
  27 class XRWebGLLayer final : public nsWrapperCache {
  28  public:
  29   NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(XRWebGLLayer)
  30   NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(XRWebGLLayer)
  31
  32   explicit XRWebGLLayer(
  33       nsISupports* aParent, XRSession& aSession, bool aIgnoreDepthValues,
  34       double aFramebufferScaleFactor,
  35       RefPtr<mozilla::ClientWebGLContext> aWebGLContext,
  36       RefPtr<WebGLFramebufferJS> aFramebuffer,
  37       const Maybe<const webgl::OpaqueFramebufferOptions>& aOptions);
  38
  39   // WebIDL Boilerplate
  40   JSObject* WrapObject(JSContext* aCx,
  41                        JS::Handle<JSObject*> aGivenProto) override;
  42   nsISupports* GetParentObject() const;
  43
  44   // WebIDL Members
  45   static already_AddRefed<XRWebGLLayer> Constructor(
  46       const GlobalObject& aGlobal, XRSession& aSession,
  47       const WebGLRenderingContextOrWebGL2RenderingContext& aXRWebGLContext,
  48       const XRWebGLLayerInit& aXRWebGLLayerInitDict, ErrorResult& aRv);
  49   bool Depth();
  50   bool Stencil();
  51   bool Alpha();
  52   bool Antialias();
  53   bool IgnoreDepthValues();
  54   WebGLFramebufferJS* GetFramebuffer();
  55   uint32_t FramebufferWidth();
  56   uint32_t FramebufferHeight();
  57   already_AddRefed<XRViewport> GetViewport(const XRView& aView);
  58   static double GetNativeFramebufferScaleFactor(const GlobalObject& aGlobal,
  59                                                 const XRSession& aSession);
  60
  61   // Non-WebIDL Members
  62   void StartAnimationFrame();
  63   void EndAnimationFrame();
  64   HTMLCanvasElement* GetCanvas();
  65   void SessionEnded();
  66
  67  private:
  68   void DeleteFramebuffer();
  69   virtual ~XRWebGLLayer();
  70   nsCOMPtr<nsISupports> mParent;
  71
  72  public:
  73   RefPtr<XRSession> mSession;
  74   RefPtr<mozilla::ClientWebGLContext> mWebGL;
  75   double mFramebufferScaleFactor;
  76   bool mCompositionDisabled;
  77
  78  private:
  79   bool mIgnoreDepthValues;
  80   RefPtr<WebGLFramebufferJS> mFramebuffer;
  81   RefPtr<XRViewport> mLeftViewport;
  82   RefPtr<XRViewport> mRightViewport;
  83   Maybe<const webgl::OpaqueFramebufferOptions> mFramebufferOptions;
  84 };
  85
  86 }  // namespace dom
  87 }  // namespace mozilla
  88
  89 #endif  // mozilla_dom_XRWebGLLayer_h_