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
176
177
178
179
180
181
182
183
184
185
186
187
188
|
//
// Copyright 2014 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.
//
// BufferD3D.cpp Defines common functionality between the Buffer9 and Buffer11 classes.
#include "libANGLE/renderer/d3d/BufferD3D.h"
#include "common/mathutil.h"
#include "common/utilities.h"
#include "libANGLE/renderer/d3d/IndexBuffer.h"
#include "libANGLE/renderer/d3d/VertexBuffer.h"
#include "libANGLE/renderer/d3d/RendererD3D.h"
namespace rx
{
unsigned int BufferD3D::mNextSerial = 1;
BufferD3D::BufferD3D(const gl::BufferState &state, BufferFactoryD3D *factory)
: BufferImpl(state),
mFactory(factory),
mStaticIndexBuffer(nullptr),
mStaticBufferCacheTotalSize(0),
mStaticVertexBufferOutOfDate(false),
mUnmodifiedDataUse(0),
mUsage(D3DBufferUsage::STATIC)
{
updateSerial();
}
BufferD3D::~BufferD3D()
{
SafeDelete(mStaticIndexBuffer);
}
void BufferD3D::emptyStaticBufferCache()
{
mStaticVertexBuffers.clear();
mStaticBufferCacheTotalSize = 0;
}
void BufferD3D::updateSerial()
{
mSerial = mNextSerial++;
}
void BufferD3D::updateD3DBufferUsage(GLenum usage)
{
switch (usage)
{
case GL_STATIC_DRAW:
case GL_STATIC_READ:
case GL_STATIC_COPY:
mUsage = D3DBufferUsage::STATIC;
initializeStaticData();
break;
case GL_STREAM_DRAW:
case GL_STREAM_READ:
case GL_STREAM_COPY:
case GL_DYNAMIC_READ:
case GL_DYNAMIC_COPY:
case GL_DYNAMIC_DRAW:
mUsage = D3DBufferUsage::DYNAMIC;
break;
default:
UNREACHABLE();
}
}
void BufferD3D::initializeStaticData()
{
if (mStaticVertexBuffers.empty())
{
auto newStaticBuffer = new StaticVertexBufferInterface(mFactory);
mStaticVertexBuffers.push_back(
std::unique_ptr<StaticVertexBufferInterface>(newStaticBuffer));
}
if (!mStaticIndexBuffer)
{
mStaticIndexBuffer = new StaticIndexBufferInterface(mFactory);
}
}
StaticIndexBufferInterface *BufferD3D::getStaticIndexBuffer()
{
return mStaticIndexBuffer;
}
StaticVertexBufferInterface *BufferD3D::getStaticVertexBuffer(const gl::VertexAttribute &attribute)
{
if (mStaticVertexBuffers.empty())
{
// Early out if there aren't any static buffers at all
return nullptr;
}
// Early out, the attribute can be added to mStaticVertexBuffer.
if (mStaticVertexBuffers.size() == 1 && mStaticVertexBuffers[0]->empty())
{
return mStaticVertexBuffers[0].get();
}
// Cache size limiting: track the total allocated buffer sizes.
size_t currentTotalSize = 0;
// At this point, see if any of the existing static buffers contains the attribute data
// If there is a cached static buffer that already contains the attribute, then return it
for (const auto &staticBuffer : mStaticVertexBuffers)
{
if (staticBuffer->matchesAttribute(attribute))
{
return staticBuffer.get();
}
currentTotalSize += staticBuffer->getBufferSize();
}
// Cache size limiting: Clean-up threshold is four times the base buffer size, with a minimum.
ASSERT(getSize() < std::numeric_limits<size_t>::max() / 4u);
size_t sizeThreshold = std::max(getSize() * 4u, static_cast<size_t>(0x1000u));
// If we're past the threshold, clear the buffer cache. Note that this will release buffers
// that are currenly bound, and in an edge case can even translate the same attribute twice
// in the same draw call. It will not delete currently bound buffers, however, because they
// are ref counted.
if (currentTotalSize > sizeThreshold)
{
emptyStaticBufferCache();
}
// At this point, we must create a new static buffer for the attribute data.
auto newStaticBuffer = new StaticVertexBufferInterface(mFactory);
newStaticBuffer->setAttribute(attribute);
mStaticVertexBuffers.push_back(std::unique_ptr<StaticVertexBufferInterface>(newStaticBuffer));
return newStaticBuffer;
}
void BufferD3D::invalidateStaticData()
{
emptyStaticBufferCache();
if (mStaticIndexBuffer && mStaticIndexBuffer->getBufferSize() != 0)
{
SafeDelete(mStaticIndexBuffer);
}
// If the buffer was created with a static usage then we recreate the static
// buffers so that they are populated the next time we use this buffer.
if (mUsage == D3DBufferUsage::STATIC)
{
initializeStaticData();
}
mUnmodifiedDataUse = 0;
}
// Creates static buffers if sufficient used data has been left unmodified
void BufferD3D::promoteStaticUsage(int dataSize)
{
if (mUsage == D3DBufferUsage::DYNAMIC)
{
mUnmodifiedDataUse += dataSize;
if (mUnmodifiedDataUse > 3 * getSize())
{
updateD3DBufferUsage(GL_STATIC_DRAW);
}
}
}
gl::Error BufferD3D::getIndexRange(GLenum type,
size_t offset,
size_t count,
bool primitiveRestartEnabled,
gl::IndexRange *outRange)
{
const uint8_t *data = nullptr;
ANGLE_TRY(getData(&data));
*outRange = gl::ComputeIndexRange(type, data + offset, count, primitiveRestartEnabled);
return gl::Error(GL_NO_ERROR);
}
} // namespace rx
|
