1 /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 2 * 3 * This library is open source and may be redistributed and/or modified under 4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 5 * (at your option) any later version. The full license is in LICENSE file 6 * included with this distribution, and on the openscenegraph.org website. 7 * 8 * This library is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * OpenSceneGraph Public License for more details. 12 */ 13 14 #include <osg/AlphaFunc> 15 #include <osg/Notify> 16 17 using namespace osg; 18 AlphaFunc()19AlphaFunc::AlphaFunc() 20 { 21 _comparisonFunc = ALWAYS; 22 _referenceValue = 1.0f; 23 } 24 25 ~AlphaFunc()26AlphaFunc::~AlphaFunc() 27 { 28 } 29 apply(State &) const30void AlphaFunc::apply(State&) const 31 { 32 #ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE 33 glAlphaFunc((GLenum)_comparisonFunc,_referenceValue); 34 #else 35 OSG_NOTICE<<"Warning: AlphaFunc::apply(State&) - not supported."<<std::endl; 36 #endif 37 } 38 39