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
189
190
191
192
193
194
195
196
197
198
199
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/service/context_group.h"
#include <string>
#include "base/string_util.h"
#include "gpu/command_buffer/common/id_allocator.h"
#include "gpu/command_buffer/service/buffer_manager.h"
#include "gpu/command_buffer/service/framebuffer_manager.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/program_manager.h"
#include "gpu/command_buffer/service/renderbuffer_manager.h"
#include "gpu/command_buffer/service/shader_manager.h"
#include "gpu/command_buffer/service/texture_manager.h"
#include "ui/gfx/gl/gl_implementation.h"
namespace gpu {
namespace gles2 {
ContextGroup::ContextGroup(bool bind_generates_resource)
: num_contexts_(0),
bind_generates_resource_(bind_generates_resource),
max_vertex_attribs_(0u),
max_texture_units_(0u),
max_texture_image_units_(0u),
max_vertex_texture_image_units_(0u),
max_fragment_uniform_vectors_(0u),
max_varying_vectors_(0u),
max_vertex_uniform_vectors_(0u),
feature_info_(new FeatureInfo()) {
id_namespaces_[id_namespaces::kBuffers].reset(new IdAllocator);
id_namespaces_[id_namespaces::kFramebuffers].reset(new IdAllocator);
id_namespaces_[id_namespaces::kProgramsAndShaders].reset(
new NonReusedIdAllocator);
id_namespaces_[id_namespaces::kRenderbuffers].reset(new IdAllocator);
id_namespaces_[id_namespaces::kTextures].reset(new IdAllocator);
id_namespaces_[id_namespaces::kQueries].reset(new IdAllocator);
}
ContextGroup::~ContextGroup() {
CHECK(num_contexts_ == 0);
}
static void GetIntegerv(GLenum pname, uint32* var) {
GLint value = 0;
glGetIntegerv(pname, &value);
*var = value;
}
bool ContextGroup::Initialize(const DisallowedFeatures& disallowed_features,
const char* allowed_features) {
if (num_contexts_ > 0) {
++num_contexts_;
return true;
}
if (!feature_info_->Initialize(disallowed_features, allowed_features)) {
LOG(ERROR) << "ContextGroup::Initialize failed because FeatureInfo "
<< "initialization failed.";
return false;
}
GLint max_renderbuffer_size = 0;
glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, &max_renderbuffer_size);
GLint max_samples = 0;
if (feature_info_->feature_flags().chromium_framebuffer_multisample) {
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
}
buffer_manager_.reset(new BufferManager());
framebuffer_manager_.reset(new FramebufferManager());
renderbuffer_manager_.reset(new RenderbufferManager(
max_renderbuffer_size, max_samples));
shader_manager_.reset(new ShaderManager());
program_manager_.reset(new ProgramManager());
// Lookup GL things we need to know.
GetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_vertex_attribs_);
const GLuint kGLES2RequiredMinimumVertexAttribs = 8u;
if (max_vertex_attribs_ < kGLES2RequiredMinimumVertexAttribs) {
LOG(ERROR) << "ContextGroup::Initialize failed because too few "
<< "vertex attributes supported.";
return false;
}
GetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_texture_units_);
const GLuint kGLES2RequiredMinimumTextureUnits = 8u;
if (max_texture_units_ < kGLES2RequiredMinimumTextureUnits) {
LOG(ERROR) << "ContextGroup::Initialize failed because too few "
<< "texture units supported.";
return false;
}
GLint max_texture_size = 0;
GLint max_cube_map_texture_size = 0;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &max_cube_map_texture_size);
// Limit Intel on Mac to 512.
// TODO(gman): Update this code to check for a specific version of
// the drivers above which we no longer need this fix.
#if defined(OS_MACOSX)
const char* vendor_str = reinterpret_cast<const char*>(
glGetString(GL_VENDOR));
if (vendor_str) {
std::string lc_str(::StringToLowerASCII(std::string(vendor_str)));
bool intel_on_mac = strstr(lc_str.c_str(), "intel");
if (intel_on_mac) {
max_texture_size = std::min(
static_cast<GLint>(4096), max_texture_size);
max_cube_map_texture_size = std::min(
static_cast<GLint>(512), max_cube_map_texture_size);
}
}
#endif
texture_manager_.reset(new TextureManager(feature_info_.get(),
max_texture_size,
max_cube_map_texture_size));
GetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_texture_image_units_);
GetIntegerv(
GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &max_vertex_texture_image_units_);
if (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2) {
GetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS,
&max_fragment_uniform_vectors_);
GetIntegerv(GL_MAX_VARYING_VECTORS, &max_varying_vectors_);
GetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &max_vertex_uniform_vectors_);
} else {
GetIntegerv(
GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max_fragment_uniform_vectors_);
max_fragment_uniform_vectors_ /= 4;
GetIntegerv(GL_MAX_VARYING_FLOATS, &max_varying_vectors_);
max_varying_vectors_ /= 4;
GetIntegerv(GL_MAX_VERTEX_UNIFORM_COMPONENTS, &max_vertex_uniform_vectors_);
max_vertex_uniform_vectors_ /= 4;
}
if (!texture_manager_->Initialize()) {
LOG(ERROR) << "Context::Group::Initialize failed because texture manager "
<< "failed to initialize.";
return false;
}
++num_contexts_;
return true;
}
void ContextGroup::Destroy(bool have_context) {
DCHECK(num_contexts_ > 0);
if (--num_contexts_ > 0)
return;
if (buffer_manager_ != NULL) {
buffer_manager_->Destroy(have_context);
buffer_manager_.reset();
}
if (framebuffer_manager_ != NULL) {
framebuffer_manager_->Destroy(have_context);
framebuffer_manager_.reset();
}
if (renderbuffer_manager_ != NULL) {
renderbuffer_manager_->Destroy(have_context);
renderbuffer_manager_.reset();
}
if (texture_manager_ != NULL) {
texture_manager_->Destroy(have_context);
texture_manager_.reset();
}
if (program_manager_ != NULL) {
program_manager_->Destroy(have_context);
program_manager_.reset();
}
if (shader_manager_ != NULL) {
shader_manager_->Destroy(have_context);
shader_manager_.reset();
}
}
IdAllocatorInterface* ContextGroup::GetIdAllocator(unsigned namespace_id) {
if (namespace_id >= arraysize(id_namespaces_))
return NULL;
return id_namespaces_[namespace_id].get();
}
} // namespace gles2
} // namespace gpu
|
