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// Copyright (c) 2011 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/gfx/gl/gl_surface.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "third_party/mesa/MesaLib/include/GL/osmesa.h"
#include "ui/gfx/gl/gl_bindings.h"
#include "ui/gfx/gl/gl_implementation.h"
#include "ui/gfx/gl/gl_surface_cgl.h"
#include "ui/gfx/gl/gl_surface_osmesa.h"
#include "ui/gfx/gl/gl_surface_stub.h"
namespace gfx {
bool GLSurface::InitializeOneOff() {
static bool initialized = false;
if (initialized)
return true;
static const GLImplementation kAllowedGLImplementations[] = {
kGLImplementationDesktopGL,
kGLImplementationOSMesaGL
};
if (!InitializeRequestedGLBindings(
kAllowedGLImplementations,
kAllowedGLImplementations + arraysize(kAllowedGLImplementations),
kGLImplementationDesktopGL)) {
LOG(ERROR) << "InitializeRequestedGLBindings failed.";
return false;
}
switch (GetGLImplementation()) {
case kGLImplementationDesktopGL:
if (!GLSurfaceCGL::InitializeOneOff()) {
LOG(ERROR) << "GLSurfaceCGL::InitializeOneOff failed.";
return false;
}
break;
default:
break;
}
initialized = true;
return true;
}
// TODO(apatrick): support ViewGLSurface on mac.
#if 0
scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
gfx::PluginWindowHandle window) {
switch (GetGLImplementation()) {
case kGLImplementationOSMesaGL: {
scoped_refptr<GLSurface> surface(
new NativeViewGLSurfaceOSMesa(window));
if (!surface->Initialize())
return NULL;
return surface;
}
case kGLImplementationDesktopGL: {
scoped_refptr<GLSurface> surface(new NativeViewGLSurfaceCGL(
window));
if (!surface->Initialize())
return NULL;
return surface;
}
case kGLImplementationMockGL:
return new GLSurfaceStub;
default:
NOTREACHED();
return NULL;
}
}
#endif
scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
const gfx::Size& size) {
switch (GetGLImplementation()) {
case kGLImplementationOSMesaGL: {
scoped_refptr<GLSurface> surface(new GLSurfaceOSMesa(OSMESA_RGBA,
size));
if (!surface->Initialize())
return NULL;
return surface;
}
case kGLImplementationDesktopGL: {
scoped_refptr<GLSurface> surface(new PbufferGLSurfaceCGL(size));
if (!surface->Initialize())
return NULL;
return surface;
}
case kGLImplementationMockGL:
return new GLSurfaceStub;
default:
NOTREACHED();
return NULL;
}
}
} // namespace gfx
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