dom/canvas/WebGLRenderbuffer.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   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 WEBGL_RENDERBUFFER_H_
   7 #define WEBGL_RENDERBUFFER_H_
   8
   9 #include "mozilla/LinkedList.h"
  10 #include "nsWrapperCache.h"
  11
  12 #include "CacheInvalidator.h"
  13 #include "WebGLObjectModel.h"
  14 #include "WebGLStrongTypes.h"
  15 #include "WebGLTexture.h"
  16
  17 namespace mozilla {
  18 namespace webgl {
  19 struct FormatUsageInfo;
  20 }
  21
  22 class WebGLRenderbuffer final : public nsWrapperCache,
  23                                 public WebGLRefCountedObject<WebGLRenderbuffer>,
  24                                 public LinkedListElement<WebGLRenderbuffer>,
  25                                 public WebGLRectangleObject,
  26                                 public CacheInvalidator {
  27   friend class WebGLFramebuffer;
  28   friend class WebGLFBAttachPoint;
  29
  30  public:
  31   const GLuint mPrimaryRB;
  32   bool mHasBeenBound = false;
  33
  34  protected:
  35   const bool mEmulatePackedDepthStencil;
  36   GLuint mSecondaryRB;
  37   webgl::ImageInfo mImageInfo;
  38
  39  public:
  40   NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLRenderbuffer)
  41   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLRenderbuffer)
  42
  43   explicit WebGLRenderbuffer(WebGLContext* webgl);
  44
  45   void Delete();
  46
  47   const auto& ImageInfo() const { return mImageInfo; }
  48
  49   WebGLContext* GetParentObject() const { return mContext; }
  50
  51   void RenderbufferStorage(uint32_t samples, GLenum internalFormat,
  52                            uint32_t width, uint32_t height);
  53   // Only handles a subset of `pname`s.
  54   GLint GetRenderbufferParameter(RBTarget target, RBParam pname) const;
  55
  56   virtual JSObject* WrapObject(JSContext* cx,
  57                                JS::Handle<JSObject*> givenProto) override;
  58
  59   auto MemoryUsage() const { return mImageInfo.MemoryUsage(); }
  60
  61  protected:
  62   ~WebGLRenderbuffer() { DeleteOnce(); }
  63
  64   void DoFramebufferRenderbuffer(GLenum attachment) const;
  65   GLenum DoRenderbufferStorage(uint32_t samples,
  66                                const webgl::FormatUsageInfo* format,
  67                                uint32_t width, uint32_t height);
  68 };
  69
  70 }  // namespace mozilla
  71
  72 #endif  // WEBGL_RENDERBUFFER_H_