void TexGenChunk::deactivate(DrawEnv *pEnv, UInt32 idx)
{
glErr("TexGenChunk::deactivate precheck");
#if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
Window *win = pEnv->getWindow();
Real32 ntexcoords;
if((ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_COORDS_ARB)) ==
Window::unknownConstant
)
{
ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_UNITS_ARB);
// sgi doesn't support GL_MAX_TEXTURE_UNITS_ARB!
if(ntexcoords == Window::unknownConstant)
ntexcoords = 1.0f;
}
if(idx >= static_cast<UInt32>(ntexcoords))
{
#ifdef OSG_DEBUG
FWARNING(("TexGenChunk::deactivate: Trying to bind texcoord unit %d,"
" but Window %p only supports %lf!\n",
idx,
static_cast<void *>(win),
ntexcoords));
#endif
return;
}
TextureBaseChunk::activateTexture(win, idx);
if(getGenFuncS() != GL_NONE || getSBeacon() != NULL)
glDisable(GL_TEXTURE_GEN_S);
if(getGenFuncT() != GL_NONE || getTBeacon() != NULL)
glDisable(GL_TEXTURE_GEN_T);
if(getGenFuncR() != GL_NONE || getRBeacon() != NULL)
glDisable(GL_TEXTURE_GEN_R);
if(getGenFuncQ() != GL_NONE || getQBeacon() != NULL)
glDisable(GL_TEXTURE_GEN_Q);
#else
OSG_ASSERT(false);
#endif
glErr("TexGenChunk::deactivate");
}
void TexGenChunk::changeFrom(DrawEnv *pEnv,
StateChunk *old ,
UInt32 idx)
{
#if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
// change from me to me?
// this assumes I haven't changed in the meantime.
// is that a valid assumption?
// No, for TexGen it's not, as TexGen depends on the current
// toWorld matrix!!!
// if(old == this)
// return;
TexGenChunk *oldp = dynamic_cast<TexGenChunk *>(old);
// If the old one is not a texgen chunk, deactivate it and activate
// ourselves
if(!oldp)
{
old->deactivate(pEnv, idx);
activate(pEnv, idx);
return;
}
glErr("TexGenChunk::changeFrom precheck");
pEnv->incNumChunkChanges();
Window *win = pEnv->getWindow();
Real32 ntexcoords;
if((ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_COORDS_ARB)) ==
Window::unknownConstant
)
{
ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_UNITS_ARB);
// sgi doesn't support GL_MAX_TEXTURE_UNITS_ARB!
if(ntexcoords == Window::unknownConstant)
ntexcoords = 1.0f;
}
if(idx >= static_cast<UInt32>(ntexcoords))
{
#ifdef OSG_DEBUG
FWARNING(("TexGenChunk::changeFrom: Trying to bind texcoord unit "
"%d, but Window %p only supports %lf!\n",
idx, win, ntexcoords));
#endif
return;
}
Matrix cameraMat = pEnv->getCameraViewing();
#ifdef OLD_DA
Viewport *vp = pEnv->getViewport();
if(vp != NULL)
{
pEnv->getCamera()->getViewing(cameraMat,
vp->getPixelWidth(),
vp->getPixelHeight());
}
#endif
TextureBaseChunk::activateTexture(win, idx);
changeGenFunc(oldp->getGenFuncS(),
oldp->getSBeacon(),
GL_S,
GL_TEXTURE_GEN_S,
getGenFuncS(),
getGenFuncSPlane(),
getSBeacon(),
cameraMat,
_sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
changeGenFunc(oldp->getGenFuncT(), oldp->getTBeacon(), GL_T,
GL_TEXTURE_GEN_T,
getGenFuncT(), getGenFuncTPlane(), getTBeacon(), cameraMat,
_sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
changeGenFunc(oldp->getGenFuncR(), oldp->getRBeacon(), GL_R,
GL_TEXTURE_GEN_R,
getGenFuncR(), getGenFuncRPlane(), getRBeacon(), cameraMat,
_sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
changeGenFunc(oldp->getGenFuncQ(), oldp->getQBeacon(), GL_Q,
GL_TEXTURE_GEN_Q,
getGenFuncQ(), getGenFuncQPlane(), getQBeacon(), cameraMat,
_sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
#else
OSG_ASSERT(false);
#endif
glErr("TexGenChunk::changeFrom");
}
void TexGenChunk::activate(DrawEnv *pEnv, UInt32 idx)
{
glErr("TexGenChunk::activate precheck");
#if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
pEnv->incNumChunkChanges();
Window *win = pEnv->getWindow();
Real32 ntexcoords;
if((ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_COORDS_ARB)) ==
Window::unknownConstant
)
{
ntexcoords = win->getConstantValue(GL_MAX_TEXTURE_UNITS_ARB);
// sgi doesn't support GL_MAX_TEXTURE_UNITS_ARB!
if(ntexcoords == Window::unknownConstant)
ntexcoords = 1.0f;
}
if(idx >= static_cast<UInt32>(ntexcoords))
{
#ifdef OSG_DEBUG
FWARNING(("TexGenChunk::activate: Trying to bind texcoord unit %d,"
" but Window %p only supports %lf!\n",
idx, win, ntexcoords));
#endif
return;
}
TextureBaseChunk::activateTexture(win, idx);
FDEBUG(("TexGenChunk::activate\n"));
Matrix cameraMat = pEnv->getCameraViewing();
#if OLD_DA
Viewport *vp = pEnv->getViewport();
if(vp != NULL)
{
pEnv->getCamera()->getViewing(cameraMat,
vp->getPixelWidth(),
vp->getPixelHeight());
}
#endif
// genfuncs
setGenFunc(GL_S, GL_TEXTURE_GEN_S, getGenFuncS(), getGenFuncSPlane(),
getSBeacon(), cameraMat, _sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
glErr("TexGenChunk::activateS");
setGenFunc(GL_T, GL_TEXTURE_GEN_T, getGenFuncT(), getGenFuncTPlane(),
getTBeacon(), cameraMat, _sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
glErr("TexGenChunk::activateT");
setGenFunc(GL_R, GL_TEXTURE_GEN_R, getGenFuncR(), getGenFuncRPlane(),
getRBeacon(), cameraMat, _sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
glErr("TexGenChunk::activateR");
setGenFunc(GL_Q, GL_TEXTURE_GEN_Q, getGenFuncQ(), getGenFuncQPlane(),
getQBeacon(), cameraMat, _sfEyeModelViewMode.getValue(),
_sfEyeModelViewMatrix.getValue());
#else
OSG_ASSERT(false);
#endif
glErr("TexGenChunk::activateQ");
}