glenn@cs.utexas.edu (Glenn G. Lai) (03/29/91)
I have an application that requires setting the entire color lookup table. However, I couldn't set the rgb values of color 0 to anything other than (0,0,0) (or a low-value triple) and get a proper image. It seems that the intensity of the card's rgb output is reduced by color 0's rgb values. For example, if color 0 is (65535,0,0), then the red component of the image is completely filtered out; if it's (65535,65535,0), then both red and green are gone. The ProDesigner II uses a 478 D/A to store the color lookup table. I called Orchid tech support for the second time and, as was the first time, the first person got confused when I got technical and the second person said that he couldn't provide me with any information to anything I asked, including how I could find out anything about the 478. (I'm curious as to if this really meant he was also ignorant.) Do I need to write more values into the 478, or is there no solution to yhid? Glenn glenn@cs.utexas.edu
phil@brahms.amd.com (Phil Ngai) (03/30/91)
glenn@cs.utexas.edu (Glenn G. Lai) writes: >I have an application that requires setting the entire color lookup table. >However, I couldn't set the rgb values of color 0 to anything other than >(0,0,0) (or a low-value triple) and get a proper image. It seems that the >intensity of the card's rgb output is reduced by color 0's rgb values. For Based on the 478 data sheet I looked at, this doesn't seem to be how it works. -- Gun control is elitist.