On 4 Sep, this message from Mark Vojkovich echoed through cyberspace: >> Is there any way to grab a screenshot really fast. I mean like a 1280x1024 >> 32bbp screenshot in a couple of milliseconds? I am using XShmGetImage() >> right now, but a screenshot of the size mentioned above takes about 110 to >> 120 milliseconds. Doing the math this gives me a bandwidth of about 40 to >> 45 MB/s. Surely there must be a faster way of doing it. >> >> The system i am sitting on is a Linux box, XFree 4.2.0, nVidia graphics >> (GF2) with the nVidia binary driver. >> > No, there's not a way to copy quickly from the framebuffer. > Reads across AGP are limited to PCI bandwidth. I am seeing over > 100 MB/sec in general though (closer to 150 MB/sec on fast P4s).
Would there be a way to use the graphic chip's blitter to copy the framebuffer contents over AGP to main memory? Cheers Michel ------------------------------------------------------------------------- Michel Lanners | " Read Philosophy. Study Art. 23, Rue Paul Henkes | Ask Questions. Make Mistakes. L-1710 Luxembourg | email [EMAIL PROTECTED] | http://www.cpu.lu/~mlan | Learn Always. " _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
