root/OpenSceneGraph/trunk/src/osg/TexEnvFilter.cpp @ 13041

Revision 13041, 1.4 kB (checked in by robert, 2 years ago)

Ran script to remove trailing spaces and tabs

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
Line 
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#include <osg/GLExtensions>
14#include <osg/TexEnvFilter>
15#include <osg/State>
16#include <osg/Notify>
17
18using namespace osg;
19
20TexEnvFilter::TexEnvFilter(float lodBias) :
21        _lodBias(lodBias)
22{
23}
24
25
26TexEnvFilter::~TexEnvFilter()
27{
28}
29
30void TexEnvFilter::apply(State& state) const
31{
32#ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
33    // note from RO, need to adapt to do testing per graphics context.
34    static float glVersion = asciiToFloat( (const char *)glGetString( GL_VERSION ) );
35    static bool s_isTexLodBias = glVersion>=1.4 || isGLExtensionSupported(state.getContextID(),"GL_EXT_texture_lod_bias");
36
37    if (s_isTexLodBias)
38    {
39        glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, _lodBias);
40    }
41#else
42    OSG_NOTICE<<"Warning: TexEnvFilter::apply(State&) - not supported."<<std::endl;
43#endif
44}
Note: See TracBrowser for help on using the browser.