blob: 8c3a4021fa6f6f6b21be431df3fb75895c2fe7ca (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
//
// 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 LIBANGLE_REFCOUNTOBJECT_H_
#define LIBANGLE_REFCOUNTOBJECT_H_
#include "common/debug.h"
#include "angle_gl.h"
#include <cstddef>
class RefCountObject : angle::NonCopyable
{
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;
};
template <class ObjectType>
class BindingPointer
{
public:
BindingPointer()
: mObject(nullptr)
{
}
BindingPointer(const BindingPointer<ObjectType> &other)
: mObject(nullptr)
{
set(other.mObject);
}
void operator=(const BindingPointer<ObjectType> &other)
{
set(other.mObject);
}
virtual ~BindingPointer()
{
// Objects have to be released before the resource manager is destroyed, so they must be explicitly cleaned up.
ASSERT(mObject == nullptr);
}
virtual void set(ObjectType *newObject)
{
// addRef first in case newObject == mObject and this is the last reference to it.
if (newObject != nullptr) reinterpret_cast<const RefCountObject*>(newObject)->addRef();
if (mObject != nullptr) reinterpret_cast<const RefCountObject*>(mObject)->release();
mObject = newObject;
}
ObjectType *get() const { return mObject; }
ObjectType *operator->() const { return mObject; }
GLuint id() const { return (mObject != nullptr) ? mObject->id() : 0; }
private:
ObjectType *mObject;
};
template <class ObjectType>
class OffsetBindingPointer : public BindingPointer<ObjectType>
{
public:
OffsetBindingPointer() : mOffset(0), mSize(0) { }
void set(ObjectType *newObject) override
{
BindingPointer<ObjectType>::set(newObject);
mOffset = 0;
mSize = 0;
}
void set(ObjectType *newObject, GLintptr offset, GLsizeiptr size)
{
BindingPointer<ObjectType>::set(newObject);
mOffset = offset;
mSize = size;
}
GLintptr getOffset() const { return mOffset; }
GLsizeiptr getSize() const { return mSize; }
private:
GLintptr mOffset;
GLsizeiptr mSize;
};
#endif // LIBANGLE_REFCOUNTOBJECT_H_
|
