OSGTextureTransformChunk.cpp
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00043 #include <cstdlib>
00044 #include <cstdio>
00045
00046 #include <OSGConfig.h>
00047
00048 #include <OSGGL.h>
00049
00050 #include "OSGTextureTransformChunk.h"
00051 #include <OSGWindow.h>
00052 #include <OSGCamera.h>
00053 #include <OSGViewport.h>
00054 #include <OSGTextureBaseChunk.h>
00055 #include <OSGDrawEnv.h>
00056
00057 OSG_USING_NAMESPACE
00058
00059
00060
00061
00062
00063
00064
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00066
00067
00068 StateChunkClass TextureTransformChunk::_class("TextureTransform",
00069 osgMaxTexCoords);
00070
00071
00072
00073
00074
00075 void TextureTransformChunk::initMethod(InitPhase ePhase)
00076 {
00077 Inherited::initMethod(ePhase);
00078 }
00079
00080
00081
00082
00083
00084
00085
00086
00087
00088 TextureTransformChunk::TextureTransformChunk(void) :
00089 Inherited()
00090 {
00091 }
00092
00093 TextureTransformChunk::TextureTransformChunk(
00094 const TextureTransformChunk &source) :
00095
00096 Inherited(source)
00097 {
00098 }
00099
00100 TextureTransformChunk::~TextureTransformChunk(void)
00101 {
00102 }
00103
00104
00105
00106 const StateChunkClass *TextureTransformChunk::getClass(void) const
00107 {
00108 return &_class;
00109 }
00110
00111
00112
00113 void TextureTransformChunk::changed(ConstFieldMaskArg whichField,
00114 UInt32 origin,
00115 BitVector details)
00116 {
00117 Inherited::changed(whichField, origin, details);
00118 }
00119
00120
00121
00122 void TextureTransformChunk::dump( UInt32 ,
00123 const BitVector ) const
00124 {
00125 SLOG << "Dump TextureTransformChunk NI" << std::endl;
00126 }
00127
00128
00129
00130 void TextureTransformChunk::activate(DrawEnv *pEnv, UInt32 idx)
00131 {
00132 Window *win = pEnv->getWindow();
00133
00134 Real32 ntexcoords;
00135 if((ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_COORDS_ARB)) ==
00136 Window::unknownConstant
00137 )
00138 {
00139 ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_UNITS_ARB);
00140
00141 if(ntexcoords == Window::unknownConstant)
00142 ntexcoords = 1.0f;
00143 }
00144
00145 if(idx >= static_cast<UInt32>(ntexcoords))
00146 {
00147 #ifdef OSG_DEBUG
00148 FWARNING(("TextureTransformChunk::deactivate: Trying to bind texcoord unit %d,"
00149 " but Window %p only supports %d!\n",
00150 idx, win, ntexcoords));
00151 #endif
00152 return;
00153 }
00154
00155 TextureBaseChunk::activateTexture(win, idx);
00156
00157 glMatrixMode(GL_TEXTURE);
00158
00159 if(getUseCameraBeacon())
00160 {
00161 Matrix m = pEnv->getCameraToWorld();
00162
00163 m[3].setValues(0, 0, 0, 1);
00164 glLoadMatrixf(m.getValues());
00165 }
00166 else
00167 {
00168 glLoadMatrixf(getMatrix().getValues());
00169 }
00170 glMatrixMode(GL_MODELVIEW);
00171 }
00172
00173 void TextureTransformChunk::changeFrom(DrawEnv *pEnv,
00174 StateChunk *old,
00175 UInt32 idx )
00176 {
00177
00178
00179 if ( old == this )
00180 return;
00181
00182 Window *win = pEnv->getWindow();
00183
00184 Real32 ntexcoords;
00185 if((ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_COORDS_ARB)) ==
00186 Window::unknownConstant
00187 )
00188 {
00189 ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_UNITS_ARB);
00190
00191 if(ntexcoords == Window::unknownConstant)
00192 ntexcoords = 1.0f;
00193 }
00194
00195 if(idx >= static_cast<UInt32>(ntexcoords))
00196 {
00197 #ifdef OSG_DEBUG
00198 FWARNING(("TextureTransformChunk::deactivate: Trying to bind texcoord unit %d,"
00199 " but Window %p only supports %d!\n",
00200 idx, win, ntexcoords));
00201 #endif
00202 return;
00203 }
00204
00205 TextureBaseChunk::activateTexture(win, idx);
00206
00207 glMatrixMode(GL_TEXTURE);
00208 if(getUseCameraBeacon())
00209 {
00210 Matrix m = pEnv->getCameraToWorld();
00211
00212 m[3].setValues(0, 0, 0, 1);
00213 glLoadMatrixf(m.getValues());
00214 }
00215 else
00216 {
00217 glLoadMatrixf(getMatrix().getValues());
00218 }
00219 glMatrixMode(GL_MODELVIEW);
00220 }
00221
00222 void TextureTransformChunk::deactivate(DrawEnv *pEnv, UInt32 idx)
00223 {
00224 Window *win = pEnv->getWindow();
00225
00226 Real32 ntexcoords;
00227 if((ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_COORDS_ARB)) ==
00228 Window::unknownConstant
00229 )
00230 {
00231 ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_UNITS_ARB);
00232
00233 if(ntexcoords == Window::unknownConstant)
00234 ntexcoords = 1.0f;
00235 }
00236
00237 if(idx >= static_cast<UInt32>(ntexcoords))
00238 {
00239 #ifdef OSG_DEBUG
00240 FWARNING(("TextureTransformChunk::deactivate: Trying to bind texcoord unit %d,"
00241 " but Window %p only supports %d!\n",
00242 idx, win, ntexcoords));
00243 #endif
00244 return;
00245 }
00246
00247 TextureBaseChunk::activateTexture(win, idx);
00248
00249 glMatrixMode(GL_TEXTURE);
00250 glLoadIdentity();
00251 glMatrixMode(GL_MODELVIEW);
00252 }
00253
00254
00255
00256
00257 Real32 TextureTransformChunk::switchCost(StateChunk *OSG_CHECK_ARG(chunk))
00258 {
00259 return 0;
00260 }
00261
00262 bool TextureTransformChunk::operator <(const StateChunk &other) const
00263 {
00264 return this < &other;
00265 }
00266
00267 bool TextureTransformChunk::operator ==(const StateChunk &other) const
00268 {
00269 TextureTransformChunk const *tother =
00270 dynamic_cast<TextureTransformChunk const*>(&other);
00271
00272 if(!tother)
00273 return false;
00274
00275 if(tother == this)
00276 return true;
00277
00278 if(getMatrix() != tother->getMatrix())
00279 return false;
00280
00281 return true;
00282 }
00283
00284 bool TextureTransformChunk::operator !=(const StateChunk &other) const
00285 {
00286 return !(*this == other);
00287 }
