Пример #1
0
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");
}