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Texture3DNode.cc
1 /*===========================================================================*\
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5 * Department of Computer Graphics and Multimedia *
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40 \*===========================================================================*/
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $Author$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49
50
51
52
53 //=============================================================================
54 //
55 // CLASS Texture3DNode - IMPLEMENTATION
56 //
57 //=============================================================================
58
59 //=============================================================================
60
61
62 #include "Texture3DNode.hh"
63
64 //=============================================================================
65
66 namespace ACG {
67 namespace SceneGraph {
68
69 //=============================================================================
70
71
72 Texture3DNode::Texture3DNode( BaseNode * _parent,
73 const std::string & _name )
74 : BaseNode( _parent, _name ),
75 texture_( 0 ),
76 tex_mode_( GL_MODULATE ),
77 border_color_( 0, 0, 0, 0 ),
78 wrap_mode_( GL_CLAMP ),
79 filter_( GL_LINEAR )
80 {}
81
82
83 //----------------------------------------------------------------------------
84
85
86 Texture3DNode::~Texture3DNode()
87 {
88 if ( glIsTexture( texture_ ) )
89 glDeleteTextures( 1, &texture_ );
90 }
91
92
93 //----------------------------------------------------------------------------
94
95
96 void
97 Texture3DNode::enter( GLState & /*_state */, const DrawModes::DrawMode& /* _drawmode */ )
98 {
99 if ( glIsTexture( texture_ ) )
100 {
101 ACG::GLState::bindTexture( GL_TEXTURE_3D, texture_ );
102 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, tex_mode_);
103 glTexParameterfv( GL_TEXTURE_3D, GL_TEXTURE_BORDER_COLOR, border_color_.data() );
104
105 glTexParameteri( GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, wrap_mode_ );
106 glTexParameteri( GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, wrap_mode_ );
107 glTexParameteri( GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, wrap_mode_ );
108
109 glTexParameteri( GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, filter_ );
110 glTexParameteri( GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, filter_ );
111
112 }
113 }
114
115
116 //----------------------------------------------------------------------------
117
118
119 void
120 Texture3DNode::leave( GLState & /* _state */ , const DrawModes::DrawMode& /* _drawmode */ )
121 {
122 ACG::GLState::bindTexture( GL_TEXTURE_3D, 0 );
123 }
124
125
126 //----------------------------------------------------------------------------
127
128
129 void
130 Texture3DNode::set_texture( unsigned int _width,
131 unsigned int _height,
132 unsigned int _depth,
133 unsigned char * _data )
134 {
135 glTexImage3D( GL_PROXY_TEXTURE_3D, 0, GL_RGBA,
136 _width, _height, _depth, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL );
137
138 GLint test_width;
139 glGetTexLevelParameteriv( GL_PROXY_TEXTURE_3D, 0,
140 GL_TEXTURE_WIDTH, & test_width );
141
142 GLint test_height;
143 glGetTexLevelParameteriv( GL_PROXY_TEXTURE_3D, 0,
144 GL_TEXTURE_HEIGHT, & test_height );
145
146 GLint test_depth;
147 glGetTexLevelParameteriv( GL_PROXY_TEXTURE_3D, 0,
148 GL_TEXTURE_DEPTH, & test_depth );
149
150 if ( ! test_width || ! test_height || ! test_depth )
151 {
152 std::cerr << "Can't load texture.\n";
153 return;
154 }
155
156 glPixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
157 glPixelStorei( GL_UNPACK_SKIP_ROWS, 0 );
158 glPixelStorei( GL_UNPACK_SKIP_PIXELS, 0 );
159 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
160 glPixelStorei( GL_PACK_ROW_LENGTH, 0 );
161 glPixelStorei( GL_PACK_SKIP_ROWS, 0 );
162 glPixelStorei( GL_PACK_SKIP_PIXELS, 0 );
163 glPixelStorei( GL_PACK_ALIGNMENT, 1 );
164
165
166 if ( glIsTexture( texture_ ) )
167 glDeleteTextures( 1, & texture_ );
168
169 glGenTextures( 1, & texture_ );
170 ACG::GLState::bindTexture( GL_TEXTURE_3D, texture_ );
171
172 glTexImage3D( GL_TEXTURE_3D, 0, GL_RGBA,
173 _width, _height, _depth, 0, GL_RGBA, GL_UNSIGNED_BYTE, _data );
174
175 ACG::GLState::bindTexture( GL_TEXTURE_3D, 0 );
176
177 }
178
179
180 //=============================================================================
181 } // namespace SceneGraph
182 } // namespace ACG
183 //=============================================================================
ACG
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
ACG::SceneGraph::BaseNode
Definition: BaseNode.hh:135
ACG::SceneGraph::ACG::GLState::bindTexture
static void bindTexture(GLenum _target, GLuint _buffer)
replaces glBindTexture, supports locking
ACG::GLState
Definition: GLState.hh:220
ACG::SceneGraph::DrawModes::DrawMode
Specifies a DrawMode.
Definition: DrawModes.hh:294
ACG::SceneGraph::Texture3DNode::enter
void enter(GLState &_state, const DrawModes::DrawMode &_drawmode)
set texture
Definition: Texture3DNode.cc:97
ACG::SceneGraph::Texture3DNode::leave
void leave(GLState &_state, const DrawModes::DrawMode &_drawmode)
restores original texture (or no-texture)
Definition: Texture3DNode.cc:120