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// Copyright 2014 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 "content/common/gpu/image_transport_surface_fbo_mac.h"
#include "content/common/gpu/gpu_messages.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_surface_osmesa.h"
namespace content {
namespace {
// A subclass of GLSurfaceOSMesa that doesn't print an error message when
// SwapBuffers() is called.
class DRTSurfaceOSMesa : public gfx::GLSurfaceOSMesa {
public:
// Size doesn't matter, the surface is resized to the right size later.
DRTSurfaceOSMesa()
: GLSurfaceOSMesa(gfx::OSMesaSurfaceFormatRGBA, gfx::Size(1, 1)) {}
// Implement a subset of GLSurface.
virtual bool SwapBuffers() OVERRIDE;
private:
virtual ~DRTSurfaceOSMesa() {}
DISALLOW_COPY_AND_ASSIGN(DRTSurfaceOSMesa);
};
bool DRTSurfaceOSMesa::SwapBuffers() {
return true;
}
bool g_allow_os_mesa = false;
} // namespace
// static
scoped_refptr<gfx::GLSurface> ImageTransportSurface::CreateNativeSurface(
GpuChannelManager* manager,
GpuCommandBufferStub* stub,
const gfx::GLSurfaceHandle& surface_handle) {
DCHECK(surface_handle.transport_type == gfx::NATIVE_DIRECT ||
surface_handle.transport_type == gfx::NATIVE_TRANSPORT);
switch (gfx::GetGLImplementation()) {
case gfx::kGLImplementationDesktopGL:
case gfx::kGLImplementationAppleGL:
return scoped_refptr<gfx::GLSurface>(new ImageTransportSurfaceFBO(
manager, stub, surface_handle.handle));
default:
// Content shell in DRT mode spins up a gpu process which needs an
// image transport surface, but that surface isn't used to read pixel
// baselines. So this is mostly a dummy surface.
if (!g_allow_os_mesa) {
NOTREACHED();
return scoped_refptr<gfx::GLSurface>();
}
scoped_refptr<gfx::GLSurface> surface(new DRTSurfaceOSMesa());
if (!surface.get() || !surface->Initialize())
return surface;
return scoped_refptr<gfx::GLSurface>(new PassThroughImageTransportSurface(
manager, stub, surface.get()));
}
}
// static
void ImageTransportSurface::SetAllowOSMesaForTesting(bool allow) {
g_allow_os_mesa = allow;
}
} // namespace content
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