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/logging.h"
7 #include "base/memory/scoped_ptr.h"
8 #include "base/trace_event/trace_event.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"
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 kGLImplementationDesktopGLCoreProfile:
28 case kGLImplementationAppleGL: {
29 scoped_refptr<GLContext> context;
30 // Note that with virtualization we might still be able to make current
31 // a different onscreen surface with this context later. But we should
32 // always be creating the context with an offscreen surface first.
33 DCHECK(compatible_surface->IsOffscreen());
34 context = new GLContextCGL(share_group);
35 if (!context->Initialize(compatible_surface, gpu_preference))
40 case kGLImplementationOSMesaGL: {
41 scoped_refptr<GLContext> context(new GLContextOSMesa(share_group));
42 if (!context->Initialize(compatible_surface, gpu_preference))
47 case kGLImplementationMockGL:
48 return new GLContextStub;