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 WEBGLVERTEXARRAY_H_
   7 #define WEBGLVERTEXARRAY_H_
   8
   9 #include "WebGLBindableName.h"
  10 #include "WebGLObjectModel.h"
  11 #include "WebGLBuffer.h"
  12 #include "WebGLVertexAttribData.h"
  13
  14 #include "nsWrapperCache.h"
  15
  16 #include "mozilla/LinkedList.h"
  17
  18 namespace mozilla {
  19
  20 class WebGLVertexArrayFake;
  21
  22 class WebGLVertexArray
  23     : public nsWrapperCache
  24     , public WebGLBindableName
  25     , public WebGLRefCountedObject<WebGLVertexArray>
  26     , public LinkedListElement<WebGLVertexArray>
  27     , public WebGLContextBoundObject
  28 {
  29 // -----------------------------------------------------------------------------
  30 // PUBLIC
  31 public:
  32     static WebGLVertexArray* Create(WebGLContext* context);
  33
  34     void BindVertexArray() {
  35         /* Bind to dummy value to signal that this vertex array has
  36            ever been bound */
  37         BindTo(LOCAL_GL_VERTEX_ARRAY_BINDING);
  38         BindVertexArrayImpl();
  39     };
  40
  41     virtual void GenVertexArray() = 0;
  42     virtual void BindVertexArrayImpl() = 0;
  43
  44     GLuint GLName() const { return mGLName; }
  45
  46     // -------------------------------------------------------------------------
  47     // IMPLEMENT PARENT CLASSES
  48
  49     void Delete();
  50
  51     virtual void DeleteImpl() = 0;
  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     // -------------------------------------------------------------------------
  63     // MEMBER FUNCTIONS
  64
  65     bool EnsureAttrib(GLuint index, const char *info);
  66     bool HasAttrib(GLuint index) {
  67         return index < mAttribs.Length();
  68     }
  69     bool IsAttribArrayEnabled(GLuint index) {
  70         return HasAttrib(index) && mAttribs[index].enabled;
  71     }
  72
  73
  74 // -----------------------------------------------------------------------------
  75 // PROTECTED
  76 protected:
  77     WebGLVertexArray(WebGLContext* context);
  78
  79     virtual ~WebGLVertexArray() {
  80         MOZ_ASSERT(IsDeleted());
  81     };
  82
  83     // -------------------------------------------------------------------------
  84     // MEMBERS
  85
  86     nsTArray<WebGLVertexAttribData> mAttribs;
  87     WebGLRefPtr<WebGLBuffer> mElementArrayBuffer;
  88
  89     // -------------------------------------------------------------------------
  90     // FRIENDSHIPS
  91
  92     friend class WebGLVertexArrayFake;
  93     friend class WebGLContext;
  94 };
  95
  96 } // namespace mozilla
  97
  98 #endif