Introducing 2 usages for SwiftShader

ui/gl/init/gl_initializer_x11.cc

 // Copyright 2016 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 "ui/gl/init/gl_initializer.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 21 matching lines @@
 #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";
 
+const char kGLESv2SwiftShaderLibraryName[] = "libGLESv2.so";
+const char kEGLSwiftShaderLibraryName[] = "libEGL.so";
+
 bool InitializeStaticGLXInternal() {
   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) {
@@ skipping 30 matching lines @@
   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);
+  } else if (command_line->GetSwitchValueASCII(switches::kUseGL) ==
+             kGLImplementationSwiftShaderName) {
+    base::FilePath module_path;
+    if (!command_line->HasSwitch(switches::kSwiftShaderPath))
+      return false;
+    module_path = command_line->GetSwitchValuePath(switches::kSwiftShaderPath);
+
+    glesv2_path = module_path.Append(kGLESv2SwiftShaderLibraryName);
+    egl_path = module_path.Append(kEGLSwiftShaderLibraryName);
   }
 
   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;
   }
@@ skipping 34 matching lines @@
         LOG(ERROR) << "GLSurfaceGLX::InitializeOneOff failed.";
         return false;
       }
       return true;
     case kGLImplementationOSMesaGL:
       if (!GLSurfaceOSMesaX11::InitializeOneOff()) {
         LOG(ERROR) << "GLSurfaceOSMesaX11::InitializeOneOff failed.";
         return false;
       }
       return true;
+    case kGLImplementationSwiftShaderGL:
     case kGLImplementationEGLGLES2:
       if (!GLSurfaceEGL::InitializeOneOff(gfx::GetXDisplay())) {
         LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
         return false;
       }
       return true;
     default:
       return true;
   }
 }
 
 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:
       return InitializeStaticGLXInternal();
+    case kGLImplementationSwiftShaderGL:
     case kGLImplementationEGLGLES2:
       return InitializeStaticEGLInternal();
     case kGLImplementationMockGL:
     case kGLImplementationStubGL:
       SetGLImplementation(implementation);
       InitializeStaticGLBindingsGL();
       return true;
     default:
       NOTREACHED();
   }
@@ skipping 11 matching lines @@
 void ShutdownGLPlatform() {
   GLSurfaceEGL::ShutdownOneOff();
   ClearBindingsEGL();
   ClearBindingsGL();
   ClearBindingsGLX();
   ClearBindingsOSMESA();
 }
 
 }  // namespace init
 }  // namespace gl