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-rw-r--r--src/3rdparty/angle/src/common/RefCountObject.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/common/RefCountObject.h b/src/3rdparty/angle/src/common/RefCountObject.h
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+++ b/src/3rdparty/angle/src/common/RefCountObject.h
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+//
+// 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 COMMON_REFCOUNTOBJECT_H_
+#define COMMON_REFCOUNTOBJECT_H_
+
+#include <cstddef>
+
+#define GL_APICALL
+#include <GLES2/gl2.h>
+
+#include "common/debug.h"
+
+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 // COMMON_REFCOUNTOBJECT_H_