blob: 10114061dce2fb734b7f6f75fa6adc3f2308c76c (
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
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
|
// 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 "base/base_paths.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/mac/foundation_util.h"
#include "base/native_library.h"
#include "base/path_service.h"
#include "base/threading/thread_restrictions.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_context_stub_with_extensions.h"
#include "ui/gl/gl_gl_api_implementation.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_osmesa_api_implementation.h"
namespace gfx {
namespace {
const char kOpenGLFrameworkPath[] =
"/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL";
} // namespace
void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
impls->push_back(kGLImplementationDesktopGL);
impls->push_back(kGLImplementationAppleGL);
impls->push_back(kGLImplementationOSMesaGL);
}
bool InitializeStaticGLBindings(GLImplementation implementation) {
// Prevent reinitialization with a different implementation. Once the gpu
// unit tests have initialized with kGLImplementationMock, we don't want to
// later switch to another GL implementation.
DCHECK_EQ(kGLImplementationNone, GetGLImplementation());
// Allow the main thread or another to initialize these bindings
// after instituting restrictions on I/O. Going forward they will
// likely be used in the browser process on most platforms. The
// one-time initialization cost is small, between 2 and 5 ms.
base::ThreadRestrictions::ScopedAllowIO allow_io;
switch (implementation) {
case kGLImplementationOSMesaGL: {
// osmesa.so is located in the build directory. This code path is only
// valid in a developer build environment.
base::FilePath exe_path;
if (!PathService::Get(base::FILE_EXE, &exe_path)) {
LOG(ERROR) << "PathService::Get failed.";
return false;
}
base::FilePath bundle_path = base::mac::GetAppBundlePath(exe_path);
// Some unit test targets depend on osmesa but aren't built as app
// bundles. In that case, the .so is next to the executable.
if (bundle_path.empty())
bundle_path = exe_path;
base::FilePath build_dir_path = bundle_path.DirName();
base::FilePath osmesa_path = build_dir_path.Append("osmesa.so");
// When using OSMesa, just use OSMesaGetProcAddress to find entry points.
base::NativeLibrary library = base::LoadNativeLibrary(osmesa_path, NULL);
if (!library) {
LOG(ERROR) << "osmesa.so not found at " << osmesa_path.value();
return false;
}
GLGetProcAddressProc get_proc_address =
reinterpret_cast<GLGetProcAddressProc>(
base::GetFunctionPointerFromNativeLibrary(
library, "OSMesaGetProcAddress"));
if (!get_proc_address) {
LOG(ERROR) << "OSMesaGetProcAddress not found.";
base::UnloadNativeLibrary(library);
return false;
}
SetGLGetProcAddressProc(get_proc_address);
AddGLNativeLibrary(library);
SetGLImplementation(kGLImplementationOSMesaGL);
InitializeStaticGLBindingsGL();
InitializeStaticGLBindingsOSMESA();
break;
}
case kGLImplementationDesktopGL:
case kGLImplementationAppleGL: {
base::NativeLibrary library = base::LoadNativeLibrary(
base::FilePath(kOpenGLFrameworkPath), NULL);
if (!library) {
LOG(ERROR) << "OpenGL framework not found";
return false;
}
AddGLNativeLibrary(library);
SetGLImplementation(implementation);
InitializeStaticGLBindingsGL();
break;
}
case kGLImplementationMockGL: {
SetGLImplementation(kGLImplementationMockGL);
InitializeStaticGLBindingsGL();
break;
}
default:
return false;
}
return true;
}
bool InitializeDynamicGLBindings(GLImplementation implementation,
GLContext* context) {
switch (implementation) {
case kGLImplementationOSMesaGL:
InitializeDynamicGLBindingsGL(context);
InitializeDynamicGLBindingsOSMESA(context);
break;
case kGLImplementationDesktopGL:
case kGLImplementationAppleGL:
InitializeDynamicGLBindingsGL(context);
break;
case kGLImplementationMockGL:
if (!context) {
scoped_refptr<GLContextStubWithExtensions> mock_context(
new GLContextStubWithExtensions());
mock_context->SetGLVersionString("3.0");
InitializeDynamicGLBindingsGL(mock_context.get());
} else
InitializeDynamicGLBindingsGL(context);
break;
default:
return false;
}
return true;
}
void InitializeDebugGLBindings() {
InitializeDebugGLBindingsGL();
InitializeDebugGLBindingsOSMESA();
}
void ClearGLBindings() {
ClearGLBindingsGL();
ClearGLBindingsOSMESA();
SetGLImplementation(kGLImplementationNone);
UnloadGLNativeLibraries();
}
bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
return false;
}
} // namespace gfx
|
