gecko/content/canvas/src/WebGLContextVertexArray.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebGLContext.h"
#include "WebGLBuffer.h"
#include "WebGLVertexAttribData.h"
#include "WebGLVertexArray.h"
using namespace mozilla;
void
WebGLContext::BindVertexArray(WebGLVertexArray *array)
{
if (!IsContextStable())
return;
if (!ValidateObjectAllowDeletedOrNull("bindVertexArrayObject", array))
return;
if (array && array->IsDeleted()) {
/* http://www.khronos.org/registry/gles/extensions/OES/OES_vertex_array_object.txt
* BindVertexArrayOES fails and an INVALID_OPERATION error is
* generated if array is not a name returned from a previous call to
* GenVertexArraysOES, or if such a name has since been deleted with
* DeleteVertexArraysOES
*/
ErrorInvalidOperation("bindVertexArray: can't bind a deleted array!");
return;
}
MakeContextCurrent();
if (array) {
gl->fBindVertexArray(array->GLName());
array->SetHasEverBeenBound(true);
mBoundVertexArray = array;
}
else {
gl->fBindVertexArray(0);
mBoundVertexArray = mDefaultVertexArray;
}
}
already_AddRefed<WebGLVertexArray>
WebGLContext::CreateVertexArray()
{
if (!IsContextStable())
return nullptr;
nsRefPtr<WebGLVertexArray> globj = new WebGLVertexArray(this);
MakeContextCurrent();
gl->fGenVertexArrays(1, &globj->mGLName);
mVertexArrays.insertBack(globj);
return globj.forget();
}
void
WebGLContext::DeleteVertexArray(WebGLVertexArray *array)
{
if (!IsContextStable())
return;
if (array == nullptr)
return;
if (array->IsDeleted())
return;
if (mBoundVertexArray == array)
BindVertexArray(static_cast<WebGLVertexArray*>(nullptr));
array->RequestDelete();
}
bool
WebGLContext::IsVertexArray(WebGLVertexArray *array)
{
if (!IsContextStable())
return false;
if (!array)
return false;
return ValidateObjectAllowDeleted("isVertexArray", array) &&
!array->IsDeleted() &&
array->HasEverBeenBound();
}