From ad18d877ddd2a44d98fa12ccd3dbbcf4d0ac4299 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 dom/canvas/WebGLVertexArrayGL.cpp | 62 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 dom/canvas/WebGLVertexArrayGL.cpp

(limited to 'dom/canvas/WebGLVertexArrayGL.cpp')

diff --git a/dom/canvas/WebGLVertexArrayGL.cpp b/dom/canvas/WebGLVertexArrayGL.cpp
new file mode 100644
index 0000000000..aa7313150f
--- /dev/null
+++ b/dom/canvas/WebGLVertexArrayGL.cpp
@@ -0,0 +1,62 @@
+/* -*- 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 "WebGLVertexArrayGL.h"
+
+#include "GLContext.h"
+#include "WebGLContext.h"
+
+namespace mozilla {
+
+WebGLVertexArrayGL::WebGLVertexArrayGL(WebGLContext* webgl)
+    : WebGLVertexArray(webgl)
+    , mIsVAO(false)
+{ }
+
+WebGLVertexArrayGL::~WebGLVertexArrayGL()
+{
+    DeleteOnce();
+}
+
+void
+WebGLVertexArrayGL::DeleteImpl()
+{
+    mElementArrayBuffer = nullptr;
+
+    mContext->MakeContextCurrent();
+    mContext->gl->fDeleteVertexArrays(1, &mGLName);
+
+    mIsVAO = false;
+}
+
+void
+WebGLVertexArrayGL::BindVertexArrayImpl()
+{
+    mContext->mBoundVertexArray = this;
+    mContext->gl->fBindVertexArray(mGLName);
+
+    mIsVAO = true;
+}
+
+void
+WebGLVertexArrayGL::GenVertexArray()
+{
+    mContext->gl->fGenVertexArrays(1, &mGLName);
+}
+
+bool
+WebGLVertexArrayGL::IsVertexArrayImpl() const
+{
+    gl::GLContext* gl = mContext->gl;
+    if (gl->WorkAroundDriverBugs())
+    {
+        return mIsVAO;
+    }
+
+    mContext->MakeContextCurrent();
+    return mContext->gl->fIsVertexArray(mGLName) != 0;
+}
+
+} // namespace mozilla
-- 
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