1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/common/RefCountObject.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,65 @@
1.4 +//
1.5 +// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +// RefCountObject.h: Defines the gl::RefCountObject base class that provides
1.11 +// lifecycle support for GL objects using the traditional BindObject scheme, but
1.12 +// that need to be reference counted for correct cross-context deletion.
1.13 +// (Concretely, textures, buffers and renderbuffers.)
1.14 +
1.15 +#ifndef COMMON_REFCOUNTOBJECT_H_
1.16 +#define COMMON_REFCOUNTOBJECT_H_
1.17 +
1.18 +#include <cstddef>
1.19 +
1.20 +#define GL_APICALL
1.21 +#include <GLES2/gl2.h>
1.22 +
1.23 +#include "common/debug.h"
1.24 +
1.25 +class RefCountObject
1.26 +{
1.27 + public:
1.28 + explicit RefCountObject(GLuint id);
1.29 + virtual ~RefCountObject();
1.30 +
1.31 + virtual void addRef() const;
1.32 + virtual void release() const;
1.33 +
1.34 + GLuint id() const { return mId; }
1.35 +
1.36 + private:
1.37 + GLuint mId;
1.38 +
1.39 + mutable std::size_t mRefCount;
1.40 +};
1.41 +
1.42 +class RefCountObjectBindingPointer
1.43 +{
1.44 + protected:
1.45 + RefCountObjectBindingPointer() : mObject(NULL) { }
1.46 + ~RefCountObjectBindingPointer() { ASSERT(mObject == NULL); } // Objects have to be released before the resource manager is destroyed, so they must be explicitly cleaned up.
1.47 +
1.48 + void set(RefCountObject *newObject);
1.49 + RefCountObject *get() const { return mObject; }
1.50 +
1.51 + public:
1.52 + GLuint id() const { return (mObject != NULL) ? mObject->id() : 0; }
1.53 + bool operator ! () const { return (get() == NULL); }
1.54 +
1.55 + private:
1.56 + RefCountObject *mObject;
1.57 +};
1.58 +
1.59 +template <class ObjectType>
1.60 +class BindingPointer : public RefCountObjectBindingPointer
1.61 +{
1.62 + public:
1.63 + void set(ObjectType *newObject) { RefCountObjectBindingPointer::set(newObject); }
1.64 + ObjectType *get() const { return static_cast<ObjectType*>(RefCountObjectBindingPointer::get()); }
1.65 + ObjectType *operator -> () const { return get(); }
1.66 +};
1.67 +
1.68 +#endif // COMMON_REFCOUNTOBJECT_H_
