Move static GL binding initialization to //ui/gl/init.

ui/gl/gl_implementation_x11.cc

 // 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 <vector>
+#include "ui/gl/gl_implementation.h"
 
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/path_service.h"
-#include "base/threading/thread_restrictions.h"
-#include "build/build_config.h"
-#include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context_stub_with_extensions.h"
 #include "ui/gl/gl_egl_api_implementation.h"
 #include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_glx_api_implementation.h"
-#include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_implementation_osmesa.h"
 #include "ui/gl/gl_osmesa_api_implementation.h"
-#include "ui/gl/gl_switches.h"
 
 namespace gl {
-namespace {
-
-// TODO(piman): it should be Desktop GL marshalling from double to float. Today
-// on native GLES, we do float->double->float.
-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));
-}
-
-#if defined(OS_OPENBSD)
-const char kGLLibraryName[] = "libGL.so";
-#else
-const char kGLLibraryName[] = "libGL.so.1";
-#endif
-
-const char kGLESv2LibraryName[] = "libGLESv2.so.2";
-const char kEGLLibraryName[] = "libEGL.so.1";
-
-const char kGLESv2ANGLELibraryName[] = "libGLESv2.so";
-const char kEGLANGLELibraryName[] = "libEGL.so";
-
-}  // namespace
 
 void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
   impls->push_back(kGLImplementationDesktopGL);
   impls->push_back(kGLImplementationEGLGLES2);
   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:
-      return InitializeStaticGLBindingsOSMesaGL();
-    case kGLImplementationDesktopGL: {
-      base::NativeLibrary library = NULL;
-      const base::CommandLine* command_line =
-          base::CommandLine::ForCurrentProcess();
-
-      if (command_line->HasSwitch(switches::kTestGLLib))
-        library = LoadLibraryAndPrintError(
-            command_line->GetSwitchValueASCII(switches::kTestGLLib).c_str());
-
-      if (!library) {
-        library = LoadLibraryAndPrintError(kGLLibraryName);
-      }
-
-      if (!library)
-        return false;
-
-      GLGetProcAddressProc get_proc_address =
-          reinterpret_cast<GLGetProcAddressProc>(
-              base::GetFunctionPointerFromNativeLibrary(
-                  library, "glXGetProcAddress"));
-      if (!get_proc_address) {
-        LOG(ERROR) << "glxGetProcAddress not found.";
-        base::UnloadNativeLibrary(library);
-        return false;
-      }
-
-      SetGLGetProcAddressProc(get_proc_address);
-      AddGLNativeLibrary(library);
-      SetGLImplementation(kGLImplementationDesktopGL);
-
-      InitializeStaticGLBindingsGL();
-      InitializeStaticGLBindingsGLX();
-      break;
-    }
-    case kGLImplementationEGLGLES2: {
-      base::FilePath glesv2_path(kGLESv2LibraryName);
-      base::FilePath egl_path(kEGLLibraryName);
-
-      const base::CommandLine* command_line =
-          base::CommandLine::ForCurrentProcess();
-      if (command_line->GetSwitchValueASCII(switches::kUseGL) ==
-          kGLImplementationANGLEName) {
-        base::FilePath module_path;
-        if (!PathService::Get(base::DIR_MODULE, &module_path))
-          return false;
-
-        glesv2_path = module_path.Append(kGLESv2ANGLELibraryName);
-        egl_path = module_path.Append(kEGLANGLELibraryName);
-      }
-
-      base::NativeLibrary gles_library = LoadLibraryAndPrintError(glesv2_path);
-      if (!gles_library)
-        return false;
-      base::NativeLibrary egl_library = LoadLibraryAndPrintError(egl_path);
-      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);
-
-      InitializeStaticGLBindingsGL();
-      InitializeStaticGLBindingsEGL();
-
-      // These two functions take single precision float rather than double
-      // precision float parameters in GLES.
-      ::gl::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
-      ::gl::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
-      break;
-    }
-    case kGLImplementationMockGL: {
-      SetGLImplementation(kGLImplementationMockGL);
-      InitializeStaticGLBindingsGL();
-      break;
-    }
-    default:
-      return false;
-  }
-
-
-  return true;
-}
-
 bool InitializeDynamicGLBindings(GLImplementation implementation,
     GLContext* context) {
   switch (implementation) {
     case kGLImplementationOSMesaGL:
-   case kGLImplementationDesktopGL:
+    case kGLImplementationDesktopGL:
     case kGLImplementationEGLGLES2:
       InitializeDynamicGLBindingsGL(context);
       break;
     case kGLImplementationMockGL:
       if (!context) {
         scoped_refptr<GLContextStubWithExtensions> mock_context(
             new GLContextStubWithExtensions());
         mock_context->SetGLVersionString("3.0");
         InitializeDynamicGLBindingsGL(mock_context.get());
-      } else
+      } else {
         InitializeDynamicGLBindingsGL(context);
+      }
       break;
     default:
       return false;
   }
 
   return true;
 }
 
-void InitializeDebugGLBindings() {
-  InitializeDebugGLBindingsEGL();
-  InitializeDebugGLBindingsGL();
-  InitializeDebugGLBindingsGLX();
-  InitializeDebugGLBindingsOSMESA();
-}
-
-void ClearGLBindings() {
-  ClearGLBindingsEGL();
-  ClearGLBindingsGL();
-  ClearGLBindingsGLX();
-  ClearGLBindingsOSMESA();
-  SetGLImplementation(kGLImplementationNone);
-
-  UnloadGLNativeLibraries();
-}
-
 bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
   switch (GetGLImplementation()) {
     case kGLImplementationDesktopGL:
       return GetGLWindowSystemBindingInfoGLX(info);
     case kGLImplementationEGLGLES2:
       return GetGLWindowSystemBindingInfoEGL(info);
     default:
       return false;
   }
   return false;
 }
 
 }  // namespace gl