dom/canvas/WebGLBuffer.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 WEBGL_BUFFER_H_
   7 #define WEBGL_BUFFER_H_
   8
   9 #include "GLDefs.h"
  10 #include "mozilla/LinkedList.h"
  11 #include "mozilla/MemoryReporting.h"
  12 #include "nsWrapperCache.h"
  13 #include "WebGLBindableName.h"
  14 #include "WebGLObjectModel.h"
  15 #include "WebGLStrongTypes.h"
  16 #include "WebGLTypes.h"
  17
  18 namespace mozilla {
  19
  20 class WebGLElementArrayCache;
  21
  22 class WebGLBuffer MOZ_FINAL
  23     : public nsWrapperCache
  24     , public WebGLBindableName<BufferBinding>
  25     , public WebGLRefCountedObject<WebGLBuffer>
  26     , public LinkedListElement<WebGLBuffer>
  27     , public WebGLContextBoundObject
  28 {
  29 public:
  30     explicit WebGLBuffer(WebGLContext* webgl, GLuint buf);
  31
  32     void Delete();
  33
  34     size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
  35
  36     WebGLsizeiptr ByteLength() const { return mByteLength; }
  37     void SetByteLength(WebGLsizeiptr byteLength) { mByteLength = byteLength; }
  38
  39     bool ElementArrayCacheBufferData(const void* ptr, size_t bufferSizeInBytes);
  40
  41     void ElementArrayCacheBufferSubData(size_t pos, const void* ptr,
  42                                         size_t updateSizeInBytes);
  43
  44     bool Validate(GLenum type, uint32_t max_allowed, size_t first, size_t count,
  45                   uint32_t* const out_upperBound);
  46
  47     bool IsElementArrayUsedWithMultipleTypes() const;
  48
  49     WebGLContext* GetParentObject() const {
  50         return Context();
  51     };
  52
  53     virtual JSObject* WrapObject(JSContext* cx) MOZ_OVERRIDE;
  54
  55     NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLBuffer)
  56     NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLBuffer)
  57
  58 protected:
  59     ~WebGLBuffer();
  60
  61     virtual void OnTargetChanged() MOZ_OVERRIDE;
  62
  63     WebGLsizeiptr mByteLength;
  64     nsAutoPtr<WebGLElementArrayCache> mCache;
  65 };
  66
  67 } // namespace mozilla
  68
  69 #endif // WEBGL_BUFFER_H_