> I need to see the points, so I set the Group_Points attribute "Cf" and > fill in the Vector4 values with my RGBA. All seems to be good if I > don't switch away from displaying Point primitive mode. > However, I need to toggle between two modes, the regular Polygon > primitive mode or the Point primitive mode. Once I toggle to Polygon > mode and come back to Point mode, the displayed points totally go crazy. > Not only does the color start to be random, the number of points displayed > also goes wacky. Each time a random set of points will be missing.
You're referring to the OpenGL display of Point primitives, correct? Not the render output? Likely the OpenGL state is being left in a bad state from a previous object's drawing. Because the order in which objects are drawn can change depending on how the user is interacting with the Viewer this can cause what you're seeing - random display problems. One of the aggravations of the OpenGL state engine is needing to set all sorts of parameters just in case it's been set by other code you're not aware of - there's no 'set to default' functionality. So if some code in some plugin sets a parameter you're not expecting to change and your code relies on that parameter, your drawing code may be affected. That's why it's a good practice to use the glPushAttrib() and glPopAttrib() functions to restore the current state of whatever you're meddling with. -jonathan _______________________________________________ Nuke-dev mailing list Nuke-dev@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-dev
