1 /*
2  * Copyright 2019 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef GrBuffer_DEFINED
9 #define GrBuffer_DEFINED
10 
11 #include "include/gpu/GrTypes.h"
12 
13 /** Base class for a GPU buffer object or a client side arrays. */
14 class GrBuffer {
15 public:
16     GrBuffer(const GrBuffer&) = delete;
17     GrBuffer& operator=(const GrBuffer&) = delete;
18 
19     virtual ~GrBuffer() = default;
20 
21     // Our subclasses derive from different ref counting base classes. In order to use base
22     // class pointers with sk_sp we virtualize ref() and unref().
23     virtual void ref() const = 0;
24     virtual void unref() const = 0;
25 
26     /** Size of the buffer in bytes. */
27     virtual size_t size() const = 0;
28 
29     /** Is this an instance of GrCpuBuffer? Otherwise, an instance of GrGpuBuffer. */
30     virtual bool isCpuBuffer() const = 0;
31 
32 protected:
33     GrBuffer() = default;
34 };
35 
36 #endif
37