I am using open GL shading language for an item in Quartz
Composer. Can any one suggest me a way to print information to Log
such as NSLog in Objective-C .
Please help me to debug.Thanks in Advance
When using the Core Image Kernel patch, there's no way to print
anything to the log as the generated programs run on the video card
Best thing you can do for debugging is probably color resulting
pixels a certain way (e.g. red if some condition pass, green otherwise)