content/canvas/src/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 WEBGLVERTEXARRAY_H_
   7 #define WEBGLVERTEXARRAY_H_
   8
   9 #include "WebGLObjectModel.h"
  10 #include "WebGLBuffer.h"
  11 #include "WebGLVertexAttribData.h"
  12
  13 #include "nsWrapperCache.h"
  14
  15 #include "mozilla/LinkedList.h"
  16
  17 namespace mozilla {
  18
  19 class WebGLVertexArray MOZ_FINAL
  20     : public nsWrapperCache
  21     , public WebGLRefCountedObject<WebGLVertexArray>
  22     , public LinkedListElement<WebGLVertexArray>
  23     , public WebGLContextBoundObject
  24 {
  25 // -----------------------------------------------------------------------------
  26 // PUBLIC
  27 public:
  28
  29     // -------------------------------------------------------------------------
  30     // CONSTRUCTOR & DESTRUCTOR
  31
  32     WebGLVertexArray(WebGLContext *context);
  33
  34     ~WebGLVertexArray() {
  35         DeleteOnce();
  36     };
  37
  38
  39     // -------------------------------------------------------------------------
  40     // IMPLMENET PARENT CLASSES
  41
  42     void Delete();
  43
  44     WebGLContext* GetParentObject() const {
  45         return Context();
  46     }
  47
  48     virtual JSObject* WrapObject(JSContext *cx,
  49                                  JS::Handle<JSObject*> scope) MOZ_OVERRIDE;
  50
  51     NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLVertexArray)
  52     NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLVertexArray)
  53
  54
  55     // -------------------------------------------------------------------------
  56     // MEMBER FUNCTIONS
  57
  58     bool HasEverBeenBound() { return mHasEverBeenBound; }
  59     void SetHasEverBeenBound(bool x) { mHasEverBeenBound = x; }
  60     GLuint GLName() const { return mGLName; }
  61
  62     bool EnsureAttrib(GLuint index, const char *info);
  63     bool HasAttrib(GLuint index) {
  64         return index < mAttribs.Length();
  65     }
  66     bool IsAttribArrayEnabled(GLuint index) {
  67         return HasAttrib(index) && mAttribs[index].enabled;
  68     }
  69
  70
  71 // -----------------------------------------------------------------------------
  72 // PRIVATE
  73 private:
  74
  75     // -------------------------------------------------------------------------
  76     // MEMBERS
  77
  78     GLuint mGLName;
  79     bool mHasEverBeenBound;
  80     nsTArray<WebGLVertexAttribData> mAttribs;
  81     WebGLRefPtr<WebGLBuffer> mBoundElementArrayBuffer;
  82
  83
  84     // -------------------------------------------------------------------------
  85     // FRIENDSHIPS
  86
  87     friend class WebGLContext;
  88 };
  89
  90 } // namespace mozilla
  91
  92 #endif