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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
//
// 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.
//
// VertexBuffer.h: Defines the abstract VertexBuffer class and VertexBufferInterface
// class with derivations, classes that perform graphics API agnostic vertex buffer operations.
#ifndef LIBANGLE_RENDERER_D3D_VERTEXBUFFER_H_
#define LIBANGLE_RENDERER_D3D_VERTEXBUFFER_H_
#include "common/angleutils.h"
#include "libANGLE/Error.h"
#include <GLES2/gl2.h>
#include <cstddef>
#include <cstdint>
#include <vector>
namespace gl
{
struct VertexAttribute;
class VertexBinding;
struct VertexAttribCurrentValueData;
}
namespace rx
{
class BufferFactoryD3D;
// Use a ref-counting scheme with self-deletion on release. We do this so that we can more
// easily manage the static buffer cache, without deleting currently bound buffers.
class VertexBuffer : angle::NonCopyable
{
public:
VertexBuffer();
virtual gl::Error initialize(unsigned int size, bool dynamicUsage) = 0;
// Warning: you should ensure binding really matches attrib.bindingIndex before using this
// function.
virtual gl::Error storeVertexAttributes(const gl::VertexAttribute &attrib,
const gl::VertexBinding &binding,
GLenum currentValueType,
GLint start,
GLsizei count,
GLsizei instances,
unsigned int offset,
const uint8_t *sourceData) = 0;
virtual unsigned int getBufferSize() const = 0;
virtual gl::Error setBufferSize(unsigned int size) = 0;
virtual gl::Error discard() = 0;
unsigned int getSerial() const;
// This may be overridden (e.g. by VertexBuffer11) if necessary.
virtual void hintUnmapResource() { };
// Reference counting.
void addRef();
void release();
protected:
void updateSerial();
virtual ~VertexBuffer();
private:
unsigned int mSerial;
static unsigned int mNextSerial;
unsigned int mRefCount;
};
class VertexBufferInterface : angle::NonCopyable
{
public:
VertexBufferInterface(BufferFactoryD3D *factory, bool dynamic);
virtual ~VertexBufferInterface();
unsigned int getBufferSize() const;
bool empty() const { return getBufferSize() == 0; }
unsigned int getSerial() const;
VertexBuffer *getVertexBuffer() const;
protected:
gl::Error discard();
gl::Error setBufferSize(unsigned int size);
gl::ErrorOrResult<unsigned int> getSpaceRequired(const gl::VertexAttribute &attrib,
const gl::VertexBinding &binding,
GLsizei count,
GLsizei instances) const;
BufferFactoryD3D *const mFactory;
VertexBuffer *mVertexBuffer;
bool mDynamic;
};
class StreamingVertexBufferInterface : public VertexBufferInterface
{
public:
StreamingVertexBufferInterface(BufferFactoryD3D *factory, std::size_t initialSize);
~StreamingVertexBufferInterface() override;
gl::Error storeDynamicAttribute(const gl::VertexAttribute &attrib,
const gl::VertexBinding &binding,
GLenum currentValueType,
GLint start,
GLsizei count,
GLsizei instances,
unsigned int *outStreamOffset,
const uint8_t *sourceData);
gl::Error reserveVertexSpace(const gl::VertexAttribute &attribute,
const gl::VertexBinding &binding,
GLsizei count,
GLsizei instances);
private:
gl::Error reserveSpace(unsigned int size);
unsigned int mWritePosition;
unsigned int mReservedSpace;
};
class StaticVertexBufferInterface : public VertexBufferInterface
{
public:
explicit StaticVertexBufferInterface(BufferFactoryD3D *factory);
~StaticVertexBufferInterface() override;
// Warning: you should ensure binding really matches attrib.bindingIndex before using these
// functions.
gl::Error storeStaticAttribute(const gl::VertexAttribute &attrib,
const gl::VertexBinding &binding,
GLint start,
GLsizei count,
GLsizei instances,
const uint8_t *sourceData);
bool matchesAttribute(const gl::VertexAttribute &attribute,
const gl::VertexBinding &binding) const;
void setAttribute(const gl::VertexAttribute &attribute, const gl::VertexBinding &binding);
private:
class AttributeSignature final : angle::NonCopyable
{
public:
AttributeSignature();
bool matchesAttribute(const gl::VertexAttribute &attrib,
const gl::VertexBinding &binding) const;
void set(const gl::VertexAttribute &attrib, const gl::VertexBinding &binding);
private:
GLenum type;
GLuint size;
GLuint stride;
bool normalized;
bool pureInteger;
size_t offset;
};
AttributeSignature mSignature;
};
} // namespace rx
#endif // LIBANGLE_RENDERER_D3D_VERTEXBUFFER_H_
|
