/* -*- 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 "WebGLVertexArray.h"

#include "GLContext.h"

#include "mozilla/dom/WebGLRenderingContextBinding.h"

#include "WebGLBuffer.h"

#include "WebGLContext.h"

#include "WebGLVertexArrayGL.h"

#include "WebGLVertexArrayFake.h"

namespace mozilla {

JSObject*

WebGLVertexArray::WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto)

{

    return dom::WebGLVertexArrayObject_Binding::Wrap(cx, this, givenProto);

}

WebGLVertexArray::WebGLVertexArray(WebGLContext* webgl)

    : WebGLRefCountedObject(webgl)

    , mGLName(0)

{

    mAttribs.SetLength(mContext->mGLMaxVertexAttribs);

    mContext->mVertexArrays.insertBack(this);

}

WebGLVertexArray::~WebGLVertexArray()

{

    MOZ_ASSERT(IsDeleted());

}

void

WebGLVertexArray::AddBufferBindCounts(int8_t addVal) const

{

    const GLenum target = 0; // Anything non-TF is fine.

    WebGLBuffer::AddBindCount(target, mElementArrayBuffer.get(), addVal);

    for (const auto& attrib : mAttribs) {

        WebGLBuffer::AddBindCount(target, attrib.mBuf.get(), addVal);

    }

}

WebGLVertexArray*

WebGLVertexArray::Create(WebGLContext* webgl)

{

    WebGLVertexArray* array;

    if (webgl->gl->IsSupported(gl::GLFeature::vertex_array_object)) {

        array = new WebGLVertexArrayGL(webgl);

    } else {

        array = new WebGLVertexArrayFake(webgl);

    }

    return array;

}

void

WebGLVertexArray::Delete()

{

    DeleteImpl();

    LinkedListElement<WebGLVertexArray>::removeFrom(mContext->mVertexArrays);

    mElementArrayBuffer = nullptr;

    mAttribs.Clear();

}

bool

WebGLVertexArray::IsVertexArray() const

{

    return IsVertexArrayImpl();

}

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(WebGLVertexArray,

                                      mAttribs,

                                      mElementArrayBuffer)

NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLVertexArray, AddRef)

NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLVertexArray, Release)

} // namespace mozilla