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
110
111
|
//
// Copyright (c) 2002-2012 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.
//
// IndexBuffer.h: Defines the abstract IndexBuffer class and IndexBufferInterface
// class with derivations, classes that perform graphics API agnostic index buffer operations.
#ifndef LIBGLESV2_RENDERER_INDEXBUFFER_H_
#define LIBGLESV2_RENDERER_INDEXBUFFER_H_
#include "common/angleutils.h"
#include "libGLESv2/renderer/IndexRangeCache.h"
namespace rx
{
class Renderer;
class IndexBuffer
{
public:
IndexBuffer();
virtual ~IndexBuffer();
virtual bool initialize(unsigned int bufferSize, GLenum indexType, bool dynamic) = 0;
virtual bool mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory) = 0;
virtual bool unmapBuffer() = 0;
virtual bool discard() = 0;
virtual GLenum getIndexType() const = 0;
virtual unsigned int getBufferSize() const = 0;
virtual bool setSize(unsigned int bufferSize, GLenum indexType) = 0;
unsigned int getSerial() const;
protected:
void updateSerial();
private:
DISALLOW_COPY_AND_ASSIGN(IndexBuffer);
unsigned int mSerial;
static unsigned int mNextSerial;
};
class IndexBufferInterface
{
public:
IndexBufferInterface(Renderer *renderer, bool dynamic);
virtual ~IndexBufferInterface();
virtual bool reserveBufferSpace(unsigned int size, GLenum indexType) = 0;
GLenum getIndexType() const;
unsigned int getBufferSize() const;
unsigned int getSerial() const;
bool mapBuffer(unsigned int size, void** outMappedMemory, unsigned int *streamOffset);
bool unmapBuffer();
IndexBuffer *getIndexBuffer() const;
protected:
unsigned int getWritePosition() const;
void setWritePosition(unsigned int writePosition);
bool discard();
bool setBufferSize(unsigned int bufferSize, GLenum indexType);
private:
DISALLOW_COPY_AND_ASSIGN(IndexBufferInterface);
rx::Renderer *const mRenderer;
IndexBuffer* mIndexBuffer;
unsigned int mWritePosition;
bool mDynamic;
};
class StreamingIndexBufferInterface : public IndexBufferInterface
{
public:
StreamingIndexBufferInterface(Renderer *renderer);
~StreamingIndexBufferInterface();
virtual bool reserveBufferSpace(unsigned int size, GLenum indexType);
};
class StaticIndexBufferInterface : public IndexBufferInterface
{
public:
explicit StaticIndexBufferInterface(Renderer *renderer);
~StaticIndexBufferInterface();
virtual bool reserveBufferSpace(unsigned int size, GLenum indexType);
IndexRangeCache *getIndexRangeCache();
private:
IndexRangeCache mIndexRangeCache;
};
}
#endif // LIBGLESV2_RENDERER_INDEXBUFFER_H_
|
