1 files changed, 70 insertions, 0 deletions
diff --git a/ANGLE/src/libGLESv2/RefCountObject.h b/ANGLE/src/libGLESv2/RefCountObject.h
new file mode 100644
index 0000000..a149350
--- /dev/null
+++ b/ANGLE/src/libGLESv2/RefCountObject.h
@@ -0,0 +1,70 @@
+//
+// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// RefCountObject.h: Defines the gl::RefCountObject base class that provides
+// lifecycle support for GL objects using the traditional BindObject scheme, but
+// that need to be reference counted for correct cross-context deletion.
+// (Concretely, textures, buffers and renderbuffers.)
+
+#ifndef LIBGLESV2_REFCOUNTOBJECT_H_
+#define LIBGLESV2_REFCOUNTOBJECT_H_
+
+#include <cstddef>
+
+#define GL_APICALL
+#include <GLES2/gl2.h>
+
+#include "common/debug.h"
+
+namespace gl
+{
+
+class RefCountObject
+{
+  public:
+    explicit RefCountObject(GLuint id);
+    virtual ~RefCountObject();
+
+    virtual void addRef() const;
+    virtual void release() const;
+
+    GLuint id() const { return mId; }
+    
+  private:
+    GLuint mId;
+
+    mutable std::size_t mRefCount;
+};
+
+class RefCountObjectBindingPointer
+{
+  protected:
+    RefCountObjectBindingPointer() : mObject(NULL) { }
+    ~RefCountObjectBindingPointer() { ASSERT(mObject == NULL); } // Objects have to be released before the resource manager is destroyed, so they must be explicitly cleaned up.
+
+    void set(RefCountObject *newObject);
+    RefCountObject *get() const { return mObject; }
+
+  public:
+    GLuint id() const { return (mObject != NULL) ? mObject->id() : 0; }
+    bool operator ! () const { return (get() == NULL); }
+
+  private:
+    RefCountObject *mObject;
+};
+
+template <class ObjectType>
+class BindingPointer : public RefCountObjectBindingPointer
+{
+  public:
+    void set(ObjectType *newObject) { RefCountObjectBindingPointer::set(newObject); }
+    ObjectType *get() const { return static_cast<ObjectType*>(RefCountObjectBindingPointer::get()); }
+    ObjectType *operator -> () const { return get(); }
+};
+
+}
+
+#endif   // LIBGLESV2_REFCOUNTOBJECT_H_