content/canvas/src/WebGLRenderbuffer.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef WEBGLRENDERBUFFER_H_
   7 #define WEBGLRENDERBUFFER_H_
   8
   9 #include "WebGLObjectModel.h"
  10
  11 #include "nsWrapperCache.h"
  12
  13 #include "mozilla/LinkedList.h"
  14
  15 namespace mozilla {
  16
  17 class WebGLRenderbuffer MOZ_FINAL
  18     : public nsWrapperCache
  19     , public WebGLRefCountedObject<WebGLRenderbuffer>
  20     , public LinkedListElement<WebGLRenderbuffer>
  21     , public WebGLRectangleObject
  22     , public WebGLContextBoundObject
  23 {
  24 public:
  25     WebGLRenderbuffer(WebGLContext *context);
  26
  27     ~WebGLRenderbuffer() {
  28         DeleteOnce();
  29     }
  30
  31     void Delete();
  32
  33     bool HasEverBeenBound() { return mHasEverBeenBound; }
  34     void SetHasEverBeenBound(bool x) { mHasEverBeenBound = x; }
  35
  36     bool HasUninitializedImageData() const { return mImageDataStatus == WebGLImageDataStatus::UninitializedImageData; }
  37     void SetImageDataStatus(WebGLImageDataStatus x) {
  38         // there is no way to go from having image data to not having any
  39         MOZ_ASSERT(x != WebGLImageDataStatus::NoImageData ||
  40                    mImageDataStatus == WebGLImageDataStatus::NoImageData);
  41         mImageDataStatus = x;
  42     }
  43
  44     GLenum InternalFormat() const { return mInternalFormat; }
  45     void SetInternalFormat(GLenum aInternalFormat) { mInternalFormat = aInternalFormat; }
  46
  47     GLenum InternalFormatForGL() const { return mInternalFormatForGL; }
  48     void SetInternalFormatForGL(GLenum aInternalFormatForGL) { mInternalFormatForGL = aInternalFormatForGL; }
  49
  50     int64_t MemoryUsage() const;
  51
  52     WebGLContext *GetParentObject() const {
  53         return Context();
  54     }
  55
  56     void BindRenderbuffer() const;
  57     void RenderbufferStorage(GLenum internalFormat, GLsizei width, GLsizei height) const;
  58     void FramebufferRenderbuffer(GLenum attachment) const;
  59     // Only handles a subset of `pname`s.
  60     GLint GetRenderbufferParameter(GLenum target, GLenum pname) const;
  61
  62     virtual JSObject* WrapObject(JSContext *cx,
  63                                  JS::Handle<JSObject*> scope) MOZ_OVERRIDE;
  64
  65     NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLRenderbuffer)
  66     NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLRenderbuffer)
  67
  68 protected:
  69     GLuint mPrimaryRB;
  70     GLuint mSecondaryRB;
  71     GLenum mInternalFormat;
  72     GLenum mInternalFormatForGL;
  73     bool mHasEverBeenBound;
  74     WebGLImageDataStatus mImageDataStatus;
  75
  76     friend class WebGLFramebuffer;
  77 };
  78 } // namespace mozilla
  79
  80 #endif