Updating trunk VERSION from 2139.0 to 2140.0
[chromium-blink-merge.git] / ui / gl / gl_context_mac.mm
blob8cd58b15b1f6f3508187b4019ef123f05766cdc9
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.
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 "ui/gl/gl_context_cgl.h"
10 #include "ui/gl/gl_context_osmesa.h"
11 #include "ui/gl/gl_context_stub.h"
12 #include "ui/gl/gl_implementation.h"
13 #include "ui/gl/gl_surface.h"
14 #include "ui/gl/gl_switches.h"
16 namespace gfx {
18 class GLShareGroup;
20 scoped_refptr<GLContext> GLContext::CreateGLContext(
21     GLShareGroup* share_group,
22     GLSurface* compatible_surface,
23     GpuPreference gpu_preference) {
24   TRACE_EVENT0("gpu", "GLContext::CreateGLContext");
25   switch (GetGLImplementation()) {
26     case kGLImplementationDesktopGL:
27     case kGLImplementationAppleGL: {
28       scoped_refptr<GLContext> context;
29       // Note that with virtualization we might still be able to make current
30       // a different onscreen surface with this context later. But we should
31       // always be creating the context with an offscreen surface first.
32       DCHECK(compatible_surface->IsOffscreen());
33       context = new GLContextCGL(share_group);
34       if (!context->Initialize(compatible_surface, gpu_preference))
35         return NULL;
37       return context;
38     }
39     case kGLImplementationOSMesaGL: {
40       scoped_refptr<GLContext> context(new GLContextOSMesa(share_group));
41       if (!context->Initialize(compatible_surface, gpu_preference))
42         return NULL;
44       return context;
45     }
46     case kGLImplementationMockGL:
47       return new GLContextStub;
48     default:
49       NOTREACHED();
50       return NULL;
51   }
54 }  // namespace gfx