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      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 "base/basictypes.h"
      6 #include "base/debug/trace_event.h"
      7 #include "base/logging.h"
      8 #include "base/memory/scoped_ptr.h"
      9 #include "third_party/mesa/src/include/GL/osmesa.h"
     10 #include "ui/gl/gl_context_cgl.h"
     11 #include "ui/gl/gl_context_osmesa.h"
     12 #include "ui/gl/gl_context_stub.h"
     13 #include "ui/gl/gl_implementation.h"
     14 #include "ui/gl/gl_surface.h"
     15 #include "ui/gl/gl_switches.h"
     16 
     17 #if defined(USE_AURA)
     18 #include "ui/gl/gl_context_nsview.h"
     19 #endif
     20 
     21 namespace gfx {
     22 
     23 class GLShareGroup;
     24 
     25 scoped_refptr<GLContext> GLContext::CreateGLContext(
     26     GLShareGroup* share_group,
     27     GLSurface* compatible_surface,
     28     GpuPreference gpu_preference) {
     29   TRACE_EVENT0("gpu", "GLContext::CreateGLContext");
     30   switch (GetGLImplementation()) {
     31     case kGLImplementationDesktopGL:
     32     case kGLImplementationAppleGL: {
     33       scoped_refptr<GLContext> context;
     34 #if defined(USE_AURA)
     35       if (compatible_surface->IsOffscreen())
     36         context = new GLContextCGL(share_group);
     37       else
     38         context = new GLContextNSView(share_group);
     39 #else
     40       context = new GLContextCGL(share_group);
     41 #endif // USE_AURA
     42       if (!context->Initialize(compatible_surface, gpu_preference))
     43         return NULL;
     44 
     45       return context;
     46     }
     47     case kGLImplementationOSMesaGL: {
     48       scoped_refptr<GLContext> context(new GLContextOSMesa(share_group));
     49       if (!context->Initialize(compatible_surface, gpu_preference))
     50         return NULL;
     51 
     52       return context;
     53     }
     54     case kGLImplementationMockGL:
     55       return new GLContextStub;
     56     default:
     57       NOTREACHED();
     58       return NULL;
     59   }
     60 }
     61 
     62 }  // namespace gfx
     63