1 files changed, 81 insertions, 0 deletions
diff --git a/Source/WebCore/html/canvas/WebGLObject.cpp b/Source/WebCore/html/canvas/WebGLObject.cpp
new file mode 100644
index 000000000..7b629a69c
--- /dev/null
+++ b/Source/WebCore/html/canvas/WebGLObject.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+
+#if ENABLE(WEBGL)
+
+#include "WebGLObject.h"
+
+#include "WebGLRenderingContext.h"
+
+namespace WebCore {
+
+WebGLObject::WebGLObject(WebGLRenderingContext* context)
+    : m_object(0)
+    , m_context(context)
+    , m_attachmentCount(0)
+    , m_deleted(false)
+{
+}
+
+WebGLObject::~WebGLObject()
+{
+    if (m_context)
+        m_context->removeObject(this);
+}
+
+void WebGLObject::setObject(Platform3DObject object)
+{
+    // object==0 && m_deleted==false indicating an uninitialized state;
+    ASSERT(!m_object && !m_deleted);
+    m_object = object;
+}
+
+void WebGLObject::deleteObject()
+{
+    m_deleted = true;
+    if (!m_context || !m_object)
+        return;
+    if (!m_attachmentCount) {
+        m_context->graphicsContext3D()->makeContextCurrent();
+        deleteObjectImpl(m_object);
+        m_object = 0;
+    }
+}
+
+void WebGLObject::detachContext()
+{
+    m_attachmentCount = 0; // Make sure OpenGL resource is deleted.
+    if (m_context) {
+        deleteObject();
+        m_context->removeObject(this);
+        m_context = 0;
+    }
+}
+
+}
+
+#endif // ENABLE(WEBGL)