I want to finish the next work int multi-GPU:the primary GPU running some glsl shader program and get the first resulted Image,the other GPU separate running some glsl shader program at the same time,and get the corresponding resulted image,next, the other image be transformed to the primary GPU,and the primary GPU composite the images,get the ultimate image and display in the windows. My development environment is:vc6+ogl2+WindowsXPsp2. I have two GPU and one monitor. Primary GPU is 6600GT,seconed GPU is Quadro FX 540.My Mother Board is NF4 SLI.My hightway is PCI-E.My question is: 1. Can i realize this work? 2.If 1 ok,can someone give me some advice or example code or URL? Any reply is appreciated.