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 <string.h>
14 #include <string>
15
16 #include <osg/GL>
17 #include <osg/LightModel>
18 #include <osg/Notify>
19 #include <osg/State>
20
21 using namespace osg;
22
23
LightModel()24 LightModel::LightModel():
25 StateAttribute(),
26 _ambient(0.2f,0.2f,0.2f,1.0f),
27 _colorControl(LightModel::SINGLE_COLOR),
28 _localViewer(false),
29 _twoSided(false)
30 {
31 }
32
33
~LightModel()34 LightModel::~LightModel()
35 {
36 }
37
38 #ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
39
40 // need to define if gl.h version < 1.2.
41 #ifndef GL_LIGHT_MODEL_COLOR_CONTROL
42 #define GL_LIGHT_MODEL_COLOR_CONTROL 0x81F8
43 #endif
44
45 #ifndef GL_SINGLE_COLOR
46 #define GL_SINGLE_COLOR 0x81F9
47 #endif
48
49 #ifndef GL_SEPARATE_SPECULAR_COLOR
50 #define GL_SEPARATE_SPECULAR_COLOR 0x81FA
51 #endif
52
apply(State & state) const53 void LightModel::apply(State& state) const
54 {
55
56 #ifdef OSG_GLES1_AVAILABLE
57 #define glLightModeli glLightModelx
58 #endif
59
60 glLightModelfv(GL_LIGHT_MODEL_AMBIENT,_ambient.ptr());
61
62 if (state.get<GLExtensions>()->glVersion>=1.2)
63 {
64 if (_colorControl==SEPARATE_SPECULAR_COLOR)
65 {
66 glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL,GL_SEPARATE_SPECULAR_COLOR);
67 }
68 else
69 {
70 glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL,GL_SINGLE_COLOR);
71 }
72 }
73
74 #ifndef OSG_GLES1_AVAILABLE
75 glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER,_localViewer);
76 #endif
77
78 glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,_twoSided);
79 }
80
81 #else
82
apply(State &) const83 void LightModel::apply(State&) const
84 {
85 OSG_NOTICE<<"Warning: LightModel::apply(State&) - not supported."<<std::endl;
86 }
87
88 #endif
89
90