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| 1 // Copyright (c) 2011 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 "ui/gfx/gl/gl_implementation.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <string> | |
| 9 | |
| 10 #include "base/at_exit.h" | |
| 11 #include "base/command_line.h" | |
| 12 #include "base/logging.h" | |
| 13 | |
| 14 namespace gfx { | |
| 15 | |
| 16 namespace { | |
| 17 | |
| 18 const struct { | |
| 19 const char* name; | |
| 20 GLImplementation implementation; | |
| 21 } kGLImplementationNamePairs[] = { | |
| 22 { kGLImplementationDesktopName, kGLImplementationDesktopGL }, | |
| 23 { kGLImplementationOSMesaName, kGLImplementationOSMesaGL }, | |
| 24 #if defined(OS_MACOSX) | |
| 25 { kGLImplementationAppleName, kGLImplementationAppleGL }, | |
| 26 #endif | |
| 27 { kGLImplementationEGLName, kGLImplementationEGLGLES2 }, | |
| 28 { kGLImplementationMockName, kGLImplementationMockGL } | |
| 29 }; | |
| 30 | |
| 31 typedef std::vector<base::NativeLibrary> LibraryArray; | |
| 32 | |
| 33 GLImplementation g_gl_implementation = kGLImplementationNone; | |
| 34 LibraryArray* g_libraries; | |
| 35 GLGetProcAddressProc g_get_proc_address; | |
| 36 | |
| 37 void CleanupNativeLibraries(void* unused) { | |
| 38 if (g_libraries) { | |
| 39 for (LibraryArray::iterator it = g_libraries->begin(); | |
| 40 it != g_libraries->end(); ++it) { | |
| 41 base::UnloadNativeLibrary(*it); | |
| 42 } | |
| 43 delete g_libraries; | |
| 44 g_libraries = NULL; | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 bool ExportsCoreFunctionsFromGetProcAddress(GLImplementation implementation) { | |
| 49 switch (GetGLImplementation()) { | |
| 50 case kGLImplementationDesktopGL: | |
| 51 case kGLImplementationOSMesaGL: | |
| 52 case kGLImplementationAppleGL: | |
| 53 case kGLImplementationMockGL: | |
| 54 return true; | |
| 55 case kGLImplementationEGLGLES2: | |
| 56 return false; | |
| 57 default: | |
| 58 NOTREACHED(); | |
| 59 return true; | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 } | |
| 64 | |
| 65 GLImplementation GetNamedGLImplementation(const std::string& name) { | |
| 66 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kGLImplementationNamePairs); ++i) { | |
| 67 if (name == kGLImplementationNamePairs[i].name) | |
| 68 return kGLImplementationNamePairs[i].implementation; | |
| 69 } | |
| 70 | |
| 71 return kGLImplementationNone; | |
| 72 } | |
| 73 | |
| 74 const char* GetGLImplementationName(GLImplementation implementation) { | |
| 75 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kGLImplementationNamePairs); ++i) { | |
| 76 if (implementation == kGLImplementationNamePairs[i].implementation) | |
| 77 return kGLImplementationNamePairs[i].name; | |
| 78 } | |
| 79 | |
| 80 return "unknown"; | |
| 81 } | |
| 82 | |
| 83 void SetGLImplementation(GLImplementation implementation) { | |
| 84 g_gl_implementation = implementation; | |
| 85 } | |
| 86 | |
| 87 GLImplementation GetGLImplementation() { | |
| 88 return g_gl_implementation; | |
| 89 } | |
| 90 | |
| 91 bool HasDesktopGLFeatures() { | |
| 92 return kGLImplementationDesktopGL == g_gl_implementation || | |
| 93 kGLImplementationOSMesaGL == g_gl_implementation || | |
| 94 kGLImplementationAppleGL == g_gl_implementation; | |
| 95 } | |
| 96 | |
| 97 void AddGLNativeLibrary(base::NativeLibrary library) { | |
| 98 DCHECK(library); | |
| 99 | |
| 100 if (!g_libraries) { | |
| 101 g_libraries = new LibraryArray; | |
| 102 base::AtExitManager::RegisterCallback(CleanupNativeLibraries, NULL); | |
| 103 } | |
| 104 | |
| 105 g_libraries->push_back(library); | |
| 106 } | |
| 107 | |
| 108 void UnloadGLNativeLibraries() { | |
| 109 CleanupNativeLibraries(NULL); | |
| 110 } | |
| 111 | |
| 112 void SetGLGetProcAddressProc(GLGetProcAddressProc proc) { | |
| 113 DCHECK(proc); | |
| 114 g_get_proc_address = proc; | |
| 115 } | |
| 116 | |
| 117 void* GetGLCoreProcAddress(const char* name) { | |
| 118 DCHECK(g_gl_implementation != kGLImplementationNone); | |
| 119 | |
| 120 if (g_libraries) { | |
| 121 for (size_t i = 0; i < g_libraries->size(); ++i) { | |
| 122 void* proc = base::GetFunctionPointerFromNativeLibrary((*g_libraries)[i], | |
| 123 name); | |
| 124 if (proc) | |
| 125 return proc; | |
| 126 } | |
| 127 } | |
| 128 if (ExportsCoreFunctionsFromGetProcAddress(g_gl_implementation) && | |
| 129 g_get_proc_address) { | |
| 130 void* proc = g_get_proc_address(name); | |
| 131 if (proc) | |
| 132 return proc; | |
| 133 } | |
| 134 | |
| 135 return NULL; | |
| 136 } | |
| 137 | |
| 138 void* GetGLProcAddress(const char* name) { | |
| 139 DCHECK(g_gl_implementation != kGLImplementationNone); | |
| 140 | |
| 141 void* proc = GetGLCoreProcAddress(name); | |
| 142 if (!proc && g_get_proc_address) { | |
| 143 proc = g_get_proc_address(name); | |
| 144 if (proc) | |
| 145 return proc; | |
| 146 } | |
| 147 | |
| 148 return proc; | |
| 149 } | |
| 150 | |
| 151 } // namespace gfx | |
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Chromium Code Reviews
Issue 10392068:
ui: Move gl/ directory out of gfx/, up to ui/. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src