dom/canvas/WebGLVertexArray.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_VERTEX_ARRAY_H_
   7 #define WEBGL_VERTEX_ARRAY_H_
   8
   9 #include "mozilla/LinkedList.h"
  10 #include "nsWrapperCache.h"
  11 #include "WebGLBindableName.h"
  12 #include "WebGLBuffer.h"
  13 #include "WebGLObjectModel.h"
  14 #include "WebGLStrongTypes.h"
  15 #include "WebGLVertexAttribData.h"
  16
  17 namespace mozilla {
  18
  19 class WebGLVertexArrayFake;
  20
  21 class WebGLVertexArray
  22     : public nsWrapperCache
  23     , public WebGLBindable<VAOBinding>
  24     , public WebGLRefCountedObject<WebGLVertexArray>
  25     , public LinkedListElement<WebGLVertexArray>
  26     , public WebGLContextBoundObject
  27 {
  28 public:
  29     static WebGLVertexArray* Create(WebGLContext* webgl);
  30
  31     void BindVertexArray() {
  32         // Bind to dummy value to signal that this vertex array has ever been
  33         // bound.
  34         BindTo(LOCAL_GL_VERTEX_ARRAY_BINDING);
  35         BindVertexArrayImpl();
  36     };
  37
  38     virtual void GenVertexArray() = 0;
  39     virtual void BindVertexArrayImpl() = 0;
  40     virtual void DeleteImpl() = 0;
  41
  42     void EnsureAttrib(GLuint index);
  43     bool HasAttrib(GLuint index) const {
  44         return index < mAttribs.Length();
  45     }
  46     bool IsAttribArrayEnabled(GLuint index) const {
  47         return HasAttrib(index) && mAttribs[index].enabled;
  48     }
  49
  50     // Implement parent classes:
  51     void Delete();
  52
  53     WebGLContext* GetParentObject() const {
  54         return Context();
  55     }
  56
  57     virtual JSObject* WrapObject(JSContext* cx) MOZ_OVERRIDE;
  58
  59     NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLVertexArray)
  60     NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLVertexArray)
  61
  62     GLuint GLName() const { return mGLName; }
  63
  64 protected:
  65     explicit WebGLVertexArray(WebGLContext* webgl);
  66
  67     virtual ~WebGLVertexArray() {
  68         MOZ_ASSERT(IsDeleted());
  69     }
  70
  71     GLuint mGLName;
  72     nsTArray<WebGLVertexAttribData> mAttribs;
  73     WebGLRefPtr<WebGLBuffer> mElementArrayBuffer;
  74
  75     friend class WebGLContext;
  76     friend class WebGLVertexArrayFake;
  77     friend class WebGL2Context;
  78 };
  79
  80 } // namespace mozilla
  81
  82 #endif // WEBGL_VERTEX_ARRAY_H_