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Added osg::BlendFunci, osg::BlendEquationi and osg::ColorMaski StateAttrirbutes that wrap the glBlendFunci, glBlendEquationi and glColorMaski functions

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git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14563 16af8721-9629-0410-8352-f15c8da7e697
This commit is contained in:
Robert Osfield
2014-12-02 17:12:56 +00:00
parent a9cab19ddb
commit 457d41d385
14 changed files with 448 additions and 2 deletions
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56
src/osg/BlendFunci.cpp Normal file
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/* -*-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::apply(State& state) const
{
const Extensions* extensions = state.get<Extensions>();
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;
}
}
}