> Hello list. How I can access the video memory directly from user > space? I tried to map the framebuffer (/dev/fb0) using mmap() and > ioctl(), but I have not been successful. Really I want to make a copy > of the contents of video memory and save it as an image. have any > suggestions?
With modern cards, the video memory is a pretty large area. In order to find where the current screen actually resides, you will need to know more information like what is the driver used (Linux framebuffer? X? With what kind of card?) and probably dive into the driver code to understand where the current screen resides. In short, this is not impossible, but not simple neither. For many systems (e.g. X) there are also easier solutions for getting the contents of the current screen from user space (think of all these screenshot programs). Anyway some more information about your context would be helpful. Alex. _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
