blob: 254c037d4f625d4348b707ed990d7629ee85edfc (
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
|
// 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/command_line.h"
#include "base/file_path.h"
#include "base/logging.h"
#include "base/native_library.h"
#include "base/path_service.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_implementation.h"
namespace gfx {
namespace {
void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) {
glClearDepthf(static_cast<GLclampf>(depth));
}
void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near,
GLclampd z_far) {
glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far));
}
base::NativeLibrary LoadLibrary(const FilePath& filename) {
std::string error;
base::NativeLibrary library = base::LoadNativeLibrary(filename, &error);
if (!library) {
DVLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error;
return NULL;
}
return library;
}
base::NativeLibrary LoadLibrary(const char* filename) {
return LoadLibrary(FilePath(filename));
}
} // namespace anonymous
void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
impls->push_back(kGLImplementationEGLGLES2);
}
bool InitializeGLBindings(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.
if (GetGLImplementation() != kGLImplementationNone)
return true;
switch (implementation) {
case kGLImplementationEGLGLES2: {
base::NativeLibrary gles_library = LoadLibrary("libGLESv2.so");
if (!gles_library)
return false;
base::NativeLibrary egl_library = LoadLibrary("libEGL.so");
if (!egl_library) {
base::UnloadNativeLibrary(gles_library);
return false;
}
GLGetProcAddressProc get_proc_address =
reinterpret_cast<GLGetProcAddressProc>(
base::GetFunctionPointerFromNativeLibrary(
egl_library, "eglGetProcAddress"));
if (!get_proc_address) {
LOG(ERROR) << "eglGetProcAddress not found.";
base::UnloadNativeLibrary(egl_library);
base::UnloadNativeLibrary(gles_library);
return false;
}
SetGLGetProcAddressProc(get_proc_address);
AddGLNativeLibrary(egl_library);
AddGLNativeLibrary(gles_library);
SetGLImplementation(kGLImplementationEGLGLES2);
InitializeGLBindingsGL();
InitializeGLBindingsEGL();
// These two functions take single precision float rather than double
// precision float parameters in GLES.
::gfx::g_glClearDepth = MarshalClearDepthToClearDepthf;
::gfx::g_glDepthRange = MarshalDepthRangeToDepthRangef;
break;
}
case kGLImplementationMockGL: {
SetGLGetProcAddressProc(GetMockGLProcAddress);
SetGLImplementation(kGLImplementationMockGL);
InitializeGLBindingsGL();
break;
}
default:
NOTIMPLEMENTED() << "InitializeGLBindings on Android";
return false;
}
return true;
}
bool InitializeGLExtensionBindings(GLImplementation implementation,
GLContext* context) {
switch (implementation) {
case kGLImplementationEGLGLES2:
InitializeGLExtensionBindingsGL(context);
InitializeGLExtensionBindingsEGL(context);
break;
case kGLImplementationMockGL:
InitializeGLExtensionBindingsGL(context);
break;
default:
return false;
}
return true;
}
void InitializeDebugGLBindings() {
}
void ClearGLBindings() {
ClearGLBindingsEGL();
ClearGLBindingsGL();
SetGLImplementation(kGLImplementationNone);
UnloadGLNativeLibraries();
}
} // namespace gfx
|
