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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 "WebGLVertexArrayFake.h"
#include "GLContext.h"
#include "WebGLContext.h"
namespace mozilla {
WebGLVertexArrayFake::WebGLVertexArrayFake(WebGLContext* webgl)
: WebGLVertexArray(webgl)
, mIsVAO(false)
{ }
void
WebGLVertexArrayFake::BindVertexArrayImpl()
{
// Go through and re-bind all buffers and setup all
// vertex attribute pointers
gl::GLContext* gl = mContext->gl;
WebGLRefPtr<WebGLVertexArray> prevVertexArray = mContext->mBoundVertexArray;
mContext->mBoundVertexArray = this;
WebGLRefPtr<WebGLBuffer> prevBuffer = mContext->mBoundArrayBuffer;
mContext->BindBuffer(LOCAL_GL_ELEMENT_ARRAY_BUFFER, mElementArrayBuffer);
size_t i = 0;
for (const auto& vd : mAttribs) {
mContext->BindBuffer(LOCAL_GL_ARRAY_BUFFER, vd.mBuf);
vd.DoVertexAttribPointer(gl, i);
if (vd.mEnabled) {
gl->fEnableVertexAttribArray(i);
} else {
gl->fDisableVertexAttribArray(i);
}
++i;
}
size_t len = prevVertexArray->mAttribs.Length();
for (; i < len; ++i) {
const auto& vd = prevVertexArray->mAttribs[i];
if (vd.mEnabled) {
gl->fDisableVertexAttribArray(i);
}
}
mContext->BindBuffer(LOCAL_GL_ARRAY_BUFFER, prevBuffer);
mIsVAO = true;
}
void
WebGLVertexArrayFake::DeleteImpl()
{
mIsVAO = false;
}
bool
WebGLVertexArrayFake::IsVertexArrayImpl() const
{
return mIsVAO;
}
} // namespace mozilla
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