66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 Robert Osfield
|
|
*
|
|
* This library is open source and may be redistributed and/or modified under
|
|
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
|
|
* (at your option) any later version. The full license is in LICENSE file
|
|
* included with this distribution, and on the openscenegraph.org website.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* OpenSceneGraph Public License for more details.
|
|
*/
|
|
#include <osg/BlendFunci>
|
|
#include <osg/GLExtensions>
|
|
#include <osg/State>
|
|
|
|
using namespace osg;
|
|
|
|
BlendFunci::BlendFunci():
|
|
_index(0)
|
|
{
|
|
}
|
|
|
|
|
|
BlendFunci::~BlendFunci()
|
|
{
|
|
}
|
|
|
|
void BlendFunci::setIndex(unsigned int buf)
|
|
{
|
|
if (_index==buf) return;
|
|
|
|
ReassignToParents needToReassingToParentsWhenMemberValueChanges(this);
|
|
|
|
_index = buf;
|
|
}
|
|
|
|
void BlendFunci::apply(State& state) const
|
|
{
|
|
const GLExtensions* extensions = state.get<GLExtensions>();
|
|
if (_source_factor != _source_factor_alpha ||
|
|
_destination_factor != _destination_factor_alpha)
|
|
{
|
|
if (extensions->glBlendFuncSeparatei)
|
|
{
|
|
extensions->glBlendFuncSeparatei(static_cast<GLuint>(_index), _source_factor, _destination_factor, _source_factor_alpha, _destination_factor_alpha);
|
|
}
|
|
else
|
|
{
|
|
OSG_WARN<<"Warning: BlendFunc::apply(..) failed, BlendFuncSeparatei is not support by OpenGL driver."<<std::endl;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (extensions->glBlendFunci)
|
|
{
|
|
extensions->glBlendFunci(static_cast<GLuint>(_index), _source_factor, _destination_factor);
|
|
}
|
|
else
|
|
{
|
|
OSG_WARN<<"Warning: BlendFunc::apply(..) failed, BlendFunci is not support by OpenGL driver."<<std::endl;
|
|
}
|
|
}
|
|
}
|
|
|