dom/canvas/WebGLVertexArray.cpp

   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 #include "WebGLVertexArray.h"
   7
   8 #include "WebGLContext.h"
   9 #include "WebGLBuffer.h"
  10 #include "WebGLVertexArrayGL.h"
  11 #include "WebGLVertexArrayFake.h"
  12 #include "mozilla/dom/WebGLRenderingContextBinding.h"
  13 #include "GLContext.h"
  14
  15 using namespace mozilla;
  16
  17 JSObject*
  18 WebGLVertexArray::WrapObject(JSContext *cx) {
  19     return dom::WebGLVertexArrayBinding::Wrap(cx, this);
  20 }
  21
  22 WebGLVertexArray::WebGLVertexArray(WebGLContext* context)
  23     : WebGLBindableName()
  24     , WebGLContextBoundObject(context)
  25 {
  26     SetIsDOMBinding();
  27     context->mVertexArrays.insertBack(this);
  28 }
  29
  30 WebGLVertexArray*
  31 WebGLVertexArray::Create(WebGLContext* context)
  32 {
  33     WebGLVertexArray* array;
  34     if (context->gl->IsSupported(gl::GLFeature::vertex_array_object)) {
  35         array = new WebGLVertexArrayGL(context);
  36     } else {
  37         array = new WebGLVertexArrayFake(context);
  38     }
  39
  40     return array;
  41 }
  42
  43 void
  44 WebGLVertexArray::Delete()
  45 {
  46     DeleteImpl();
  47
  48     LinkedListElement<WebGLVertexArray>::removeFrom(mContext->mVertexArrays);
  49     mElementArrayBuffer = nullptr;
  50     mAttribs.Clear();
  51 }
  52
  53 bool
  54 WebGLVertexArray::EnsureAttrib(GLuint index, const char *info)
  55 {
  56     if (index >= GLuint(mContext->mGLMaxVertexAttribs)) {
  57         if (index == GLuint(-1)) {
  58             mContext->ErrorInvalidValue("%s: index -1 is invalid. That probably comes from a getAttribLocation() call, "
  59                                         "where this return value -1 means that the passed name didn't correspond to an active attribute in "
  60                                         "the specified program.", info);
  61         } else {
  62             mContext->ErrorInvalidValue("%s: index %d is out of range", info, index);
  63         }
  64         return false;
  65     }
  66     else if (index >= mAttribs.Length()) {
  67         mAttribs.SetLength(index + 1);
  68     }
  69
  70     return true;
  71 }
  72
  73 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(WebGLVertexArray,
  74   mAttribs,
  75   mElementArrayBuffer)
  76
  77 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLVertexArray, AddRef)
  78 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLVertexArray, Release)