i have a display that does the following.. .... glTexCoord1f(getColor(value)) glVertex3f(x,y, z) .... then i created a draw function in my class that executes the display list. this just sets up the colors of my texture and draws the quad itself. the getColor function basically just takes value sent in and returns a number that corresponds to the texture..so something like.. tex = (value - max)/(max - min); //return a value between 0.0 and 1.0 anyway my main point is, is that when i change the minimum and maximum number from the main program my display list doesnt seem to be updating.. i am getting the same texture colors..what could i be doing wrong? is the glCallList somehow not being called? thanks in advance!

The display list is compiled with the value returned from the 'getColor' at compile time. Executing the display list doesn't call the 'getColor' function again (how could it), it simply uses what value was initially passed to it (when compiled).

HTH

ok thanks i got it..and i know you have to rebuild it.. i guess i was just hoping for a way to update it faster without having to wait.. thats all..

and why was i rated down for asking a simple question? i know its just a number and i dont really care but the rating system on here is flawed to the max.