Introducing 2 usages for SwiftShader

ui/gl/init/gl_factory_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_factory.h"
 
 #include "base/trace_event/trace_event.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_context_egl.h"
 #include "ui/gl/gl_context_glx.h"
@@ skipping 13 matching lines @@
 #include "ui/gl/gl_surface_stub.h"
 
 namespace gl {
 namespace init {
 
 std::vector<GLImplementation> GetAllowedGLImplementations() {
   std::vector<GLImplementation> impls;
   impls.push_back(kGLImplementationDesktopGL);
   impls.push_back(kGLImplementationEGLGLES2);
   impls.push_back(kGLImplementationOSMesaGL);
+  impls.push_back(kGLImplementationSwiftShaderGL);
   return impls;
 }
 
 bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
   switch (GetGLImplementation()) {
     case kGLImplementationDesktopGL:
       return GetGLWindowSystemBindingInfoGLX(info);
     case kGLImplementationEGLGLES2:
       return GetGLWindowSystemBindingInfoEGL(info);
     default:
       return false;
   }
 }
 
 scoped_refptr<GLContext> CreateGLContext(GLShareGroup* share_group,
                                          GLSurface* compatible_surface,
                                          const GLContextAttribs& attribs) {
   TRACE_EVENT0("gpu", "gl::init::CreateGLContext");
   switch (GetGLImplementation()) {
     case kGLImplementationOSMesaGL:
       return InitializeGLContext(new GLContextOSMesa(share_group),
                                  compatible_surface, attribs);
     case kGLImplementationDesktopGL:
       return InitializeGLContext(new GLContextGLX(share_group),
                                  compatible_surface, attribs);
+    case kGLImplementationSwiftShaderGL:
     case kGLImplementationEGLGLES2:
       return InitializeGLContext(new GLContextEGL(share_group),
                                  compatible_surface, attribs);
     case kGLImplementationMockGL:
       return new GLContextStub(share_group);
     case kGLImplementationStubGL: {
       scoped_refptr<GLContextStub> stub_context =
           new GLContextStub(share_group);
       stub_context->SetUseStubApi(true);
       return stub_context;
     }
     default:
       NOTREACHED();
       return nullptr;
   }
 }
 
 scoped_refptr<GLSurface> CreateViewGLSurface(gfx::AcceleratedWidget window) {
   TRACE_EVENT0("gpu", "gl::init::CreateViewGLSurface");
   switch (GetGLImplementation()) {
     case kGLImplementationOSMesaGL:
       return InitializeGLSurface(new GLSurfaceOSMesaX11(window));
     case kGLImplementationDesktopGL:
       return InitializeGLSurface(new GLSurfaceGLXX11(window));
+    case kGLImplementationSwiftShaderGL:
     case kGLImplementationEGLGLES2:
       DCHECK(window != gfx::kNullAcceleratedWidget);
       return InitializeGLSurface(new NativeViewGLSurfaceEGLX11(window));
     case kGLImplementationMockGL:
     case kGLImplementationStubGL:
       return new GLSurfaceStub;
     default:
       NOTREACHED();
       return nullptr;
   }
 }
 
 scoped_refptr<GLSurface> CreateOffscreenGLSurfaceWithFormat(
     const gfx::Size& size, GLSurfaceFormat format) {
   TRACE_EVENT0("gpu", "gl::init::CreateOffscreenGLSurface");
   switch (GetGLImplementation()) {
     case kGLImplementationOSMesaGL:
       format.SetDefaultPixelLayout(GLSurfaceFormat::PIXEL_LAYOUT_RGBA);
       return InitializeGLSurfaceWithFormat(
           new GLSurfaceOSMesa(format, size), format);
     case kGLImplementationDesktopGL:
       return InitializeGLSurfaceWithFormat(
           new UnmappedNativeViewGLSurfaceGLX(size), format);
+    case kGLImplementationSwiftShaderGL:
     case kGLImplementationEGLGLES2:
       return InitializeGLSurfaceWithFormat(
           new PbufferGLSurfaceEGL(size), format);
     case kGLImplementationMockGL:
     case kGLImplementationStubGL:
       return new GLSurfaceStub;
     default:
       NOTREACHED();
       return nullptr;
   }
 }
 
 }  // namespace init
 }  // namespace gl