| // |
| // 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> |
| |
| #include <GLES3/gl3.h> |
| #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(); } |
| }; |
| |
| template <class ObjectType> |
| class OffsetBindingPointer : public RefCountObjectBindingPointer |
| { |
| public: |
| OffsetBindingPointer() : mOffset(0), mSize(0) { } |
| |
| void set(ObjectType *newObject) |
| { |
| RefCountObjectBindingPointer::set(newObject); |
| mOffset = 0; |
| mSize = 0; |
| } |
| |
| void set(ObjectType *newObject, GLintptr offset, GLsizeiptr size) |
| { |
| RefCountObjectBindingPointer::set(newObject); |
| mOffset = offset; |
| mSize = size; |
| } |
| |
| GLintptr getOffset() const { return mOffset; } |
| GLsizeiptr getSize() const { return mSize; } |
| |
| ObjectType *get() const { return static_cast<ObjectType*>(RefCountObjectBindingPointer::get()); } |
| ObjectType *operator->() const { return get(); } |
| |
| private: |
| GLintptr mOffset; |
| GLsizeiptr mSize; |
| }; |
| |
| #endif // COMMON_REFCOUNTOBJECT_H_ |