| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include <vector> | |
| 6 | |
| 7 #include "base/base_paths.h" | |
| 8 #include "base/command_line.h" | |
| 9 #include "base/files/file_path.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/native_library.h" | |
| 12 #include "base/path_service.h" | |
| 13 #include "base/threading/thread_restrictions.h" | |
| 14 #include "ui/gl/gl_bindings.h" | |
| 15 #include "ui/gl/gl_egl_api_implementation.h" | |
| 16 #include "ui/gl/gl_gl_api_implementation.h" | |
| 17 #include "ui/gl/gl_glx_api_implementation.h" | |
| 18 #include "ui/gl/gl_implementation.h" | |
| 19 #include "ui/gl/gl_osmesa_api_implementation.h" | |
| 20 #include "ui/gl/gl_switches.h" | |
| 21 | |
| 22 namespace gfx { | |
| 23 namespace { | |
| 24 | |
| 25 // TODO(piman): it should be Desktop GL marshalling from double to float. Today | |
| 26 // on native GLES, we do float->double->float. | |
| 27 void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) { | |
| 28 glClearDepthf(static_cast<GLclampf>(depth)); | |
| 29 } | |
| 30 | |
| 31 void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near, | |
| 32 GLclampd z_far) { | |
| 33 glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far)); | |
| 34 } | |
| 35 | |
| 36 // Load a library, printing an error message on failure. | |
| 37 base::NativeLibrary LoadLibrary(const base::FilePath& filename) { | |
| 38 std::string error; | |
| 39 base::NativeLibrary library = base::LoadNativeLibrary(filename, | |
| 40 &error); | |
| 41 if (!library) { | |
| 42 DVLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error; | |
| 43 return NULL; | |
| 44 } | |
| 45 return library; | |
| 46 } | |
| 47 | |
| 48 base::NativeLibrary LoadLibrary(const char* filename) { | |
| 49 return LoadLibrary(base::FilePath(filename)); | |
| 50 } | |
| 51 | |
| 52 } // namespace | |
| 53 | |
| 54 void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) { | |
| 55 impls->push_back(kGLImplementationDesktopGL); | |
| 56 impls->push_back(kGLImplementationEGLGLES2); | |
| 57 impls->push_back(kGLImplementationOSMesaGL); | |
| 58 } | |
| 59 | |
| 60 bool InitializeGLBindings(GLImplementation implementation) { | |
| 61 // Prevent reinitialization with a different implementation. Once the gpu | |
| 62 // unit tests have initialized with kGLImplementationMock, we don't want to | |
| 63 // later switch to another GL implementation. | |
| 64 if (GetGLImplementation() != kGLImplementationNone) | |
| 65 return true; | |
| 66 | |
| 67 // Allow the main thread or another to initialize these bindings | |
| 68 // after instituting restrictions on I/O. Going forward they will | |
| 69 // likely be used in the browser process on most platforms. The | |
| 70 // one-time initialization cost is small, between 2 and 5 ms. | |
| 71 base::ThreadRestrictions::ScopedAllowIO allow_io; | |
| 72 | |
| 73 switch (implementation) { | |
| 74 case kGLImplementationOSMesaGL: { | |
| 75 base::FilePath module_path; | |
| 76 if (!PathService::Get(base::DIR_MODULE, &module_path)) { | |
| 77 LOG(ERROR) << "PathService::Get failed."; | |
| 78 return false; | |
| 79 } | |
| 80 | |
| 81 base::NativeLibrary library = LoadLibrary( | |
| 82 module_path.Append("libosmesa.so")); | |
| 83 if (!library) | |
| 84 return false; | |
| 85 | |
| 86 GLGetProcAddressProc get_proc_address = | |
| 87 reinterpret_cast<GLGetProcAddressProc>( | |
| 88 base::GetFunctionPointerFromNativeLibrary( | |
| 89 library, "OSMesaGetProcAddress")); | |
| 90 if (!get_proc_address) { | |
| 91 LOG(ERROR) << "OSMesaGetProcAddress not found."; | |
| 92 base::UnloadNativeLibrary(library); | |
| 93 return false; | |
| 94 } | |
| 95 | |
| 96 SetGLGetProcAddressProc(get_proc_address); | |
| 97 AddGLNativeLibrary(library); | |
| 98 SetGLImplementation(kGLImplementationOSMesaGL); | |
| 99 | |
| 100 InitializeGLBindingsGL(); | |
| 101 InitializeGLBindingsOSMESA(); | |
| 102 break; | |
| 103 } | |
| 104 case kGLImplementationDesktopGL: { | |
| 105 base::NativeLibrary library = NULL; | |
| 106 const CommandLine* command_line = CommandLine::ForCurrentProcess(); | |
| 107 | |
| 108 if (command_line->HasSwitch(switches::kTestGLLib)) | |
| 109 library = LoadLibrary(command_line->GetSwitchValueASCII( | |
| 110 switches::kTestGLLib).c_str()); | |
| 111 | |
| 112 if (!library) { | |
| 113 #if defined(OS_OPENBSD) | |
| 114 library = LoadLibrary("libGL.so"); | |
| 115 #else | |
| 116 library = LoadLibrary("libGL.so.1"); | |
| 117 #endif | |
| 118 } | |
| 119 | |
| 120 if (!library) | |
| 121 return false; | |
| 122 | |
| 123 GLGetProcAddressProc get_proc_address = | |
| 124 reinterpret_cast<GLGetProcAddressProc>( | |
| 125 base::GetFunctionPointerFromNativeLibrary( | |
| 126 library, "glXGetProcAddress")); | |
| 127 if (!get_proc_address) { | |
| 128 LOG(ERROR) << "glxGetProcAddress not found."; | |
| 129 base::UnloadNativeLibrary(library); | |
| 130 return false; | |
| 131 } | |
| 132 | |
| 133 SetGLGetProcAddressProc(get_proc_address); | |
| 134 AddGLNativeLibrary(library); | |
| 135 SetGLImplementation(kGLImplementationDesktopGL); | |
| 136 | |
| 137 InitializeGLBindingsGL(); | |
| 138 InitializeGLBindingsGLX(); | |
| 139 break; | |
| 140 } | |
| 141 case kGLImplementationEGLGLES2: { | |
| 142 base::NativeLibrary gles_library = LoadLibrary("libGLESv2.so.2"); | |
| 143 if (!gles_library) | |
| 144 return false; | |
| 145 base::NativeLibrary egl_library = LoadLibrary("libEGL.so.1"); | |
| 146 if (!egl_library) { | |
| 147 base::UnloadNativeLibrary(gles_library); | |
| 148 return false; | |
| 149 } | |
| 150 | |
| 151 GLGetProcAddressProc get_proc_address = | |
| 152 reinterpret_cast<GLGetProcAddressProc>( | |
| 153 base::GetFunctionPointerFromNativeLibrary( | |
| 154 egl_library, "eglGetProcAddress")); | |
| 155 if (!get_proc_address) { | |
| 156 LOG(ERROR) << "eglGetProcAddress not found."; | |
| 157 base::UnloadNativeLibrary(egl_library); | |
| 158 base::UnloadNativeLibrary(gles_library); | |
| 159 return false; | |
| 160 } | |
| 161 | |
| 162 SetGLGetProcAddressProc(get_proc_address); | |
| 163 AddGLNativeLibrary(egl_library); | |
| 164 AddGLNativeLibrary(gles_library); | |
| 165 SetGLImplementation(kGLImplementationEGLGLES2); | |
| 166 | |
| 167 InitializeGLBindingsGL(); | |
| 168 InitializeGLBindingsEGL(); | |
| 169 | |
| 170 // These two functions take single precision float rather than double | |
| 171 // precision float parameters in GLES. | |
| 172 ::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf; | |
| 173 ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef; | |
| 174 break; | |
| 175 } | |
| 176 case kGLImplementationMockGL: { | |
| 177 SetGLGetProcAddressProc(GetMockGLProcAddress); | |
| 178 SetGLImplementation(kGLImplementationMockGL); | |
| 179 InitializeGLBindingsGL(); | |
| 180 break; | |
| 181 } | |
| 182 default: | |
| 183 return false; | |
| 184 } | |
| 185 | |
| 186 | |
| 187 return true; | |
| 188 } | |
| 189 | |
| 190 bool InitializeGLExtensionBindings(GLImplementation implementation, | |
| 191 GLContext* context) { | |
| 192 switch (implementation) { | |
| 193 case kGLImplementationOSMesaGL: | |
| 194 InitializeGLExtensionBindingsGL(context); | |
| 195 InitializeGLExtensionBindingsOSMESA(context); | |
| 196 break; | |
| 197 case kGLImplementationDesktopGL: | |
| 198 InitializeGLExtensionBindingsGL(context); | |
| 199 InitializeGLExtensionBindingsGLX(context); | |
| 200 break; | |
| 201 case kGLImplementationEGLGLES2: | |
| 202 InitializeGLExtensionBindingsGL(context); | |
| 203 InitializeGLExtensionBindingsEGL(context); | |
| 204 break; | |
| 205 case kGLImplementationMockGL: | |
| 206 InitializeGLExtensionBindingsGL(context); | |
| 207 break; | |
| 208 default: | |
| 209 return false; | |
| 210 } | |
| 211 | |
| 212 return true; | |
| 213 } | |
| 214 | |
| 215 void InitializeDebugGLBindings() { | |
| 216 InitializeDebugGLBindingsEGL(); | |
| 217 InitializeDebugGLBindingsGL(); | |
| 218 InitializeDebugGLBindingsGLX(); | |
| 219 InitializeDebugGLBindingsOSMESA(); | |
| 220 } | |
| 221 | |
| 222 void ClearGLBindings() { | |
| 223 ClearGLBindingsEGL(); | |
| 224 ClearGLBindingsGL(); | |
| 225 ClearGLBindingsGLX(); | |
| 226 ClearGLBindingsOSMESA(); | |
| 227 SetGLImplementation(kGLImplementationNone); | |
| 228 | |
| 229 UnloadGLNativeLibraries(); | |
| 230 } | |
| 231 | |
| 232 } // namespace gfx | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 13985039:
Rationalize linux vs x11 in ui (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src