gecko-dev/gfx/gl/GLContextUtils.cpp

32 lines
945 B
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GLContext.h"
#include "GLContextUtils.h"
#include "mozilla/gfx/2D.h"
#include "gfx2DGlue.h"
using namespace mozilla::gfx;
namespace mozilla {
namespace gl {
TemporaryRef<gfx::DataSourceSurface>
ReadBackSurface(GLContext* aContext, GLuint aTexture, bool aYInvert, SurfaceFormat aFormat)
{
nsRefPtr<gfxImageSurface> image = aContext->GetTexImage(aTexture, aYInvert, aFormat);
RefPtr<gfx::DataSourceSurface> surf =
Factory::CreateDataSourceSurface(gfx::ToIntSize(image->GetSize()), aFormat);
if (!image->CopyTo(surf)) {
return nullptr;
}
return surf.forget();
}
} /* namespace gl */
} /* namespace mozilla */