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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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55
src/osg/BlendEquationi.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/BlendEquationi>
#include <osg/GLExtensions>
#include <osg/State>
using namespace osg;
BlendEquationi::BlendEquationi():
_index(0)
{
}
BlendEquationi::~BlendEquationi()
{
}
void BlendEquationi::apply(State& state) const
{
const Extensions* extensions = state.get<Extensions>();
if (_equationRGB == _equationAlpha)
{
if (extensions->glBlendEquationi)
{
extensions->glBlendEquationi(static_cast<GLuint>(_index), static_cast<GLenum>(_equationRGB));
}
else
{
OSG_WARN<<"Warning: BlendEquationi::apply(..) not supported by OpenGL driver." << std::endl;
}
}
else
{
if (extensions->glBlendEquationSeparatei)
{
extensions->glBlendEquationSeparatei(static_cast<GLuint>(_index), static_cast<GLenum>(_equationRGB), static_cast<GLenum>(_equationAlpha));
}
else
{
OSG_WARN<<"Warning: BlendEquation::apply(..) failed, glBlendEquationSeparatei not supported by OpenGL driver." << std::endl;
}
}
}