On 02.03.2013 19:24, Tobias Ulmer wrote: > Your resolution is 1600*1200*3 bytes (lets ignore whatever protocol the > driver uses, probably not 3 byte words), so 1 full frame update, without > the large USB overhead, means pushing out 5.5MB/s. At just 25fps that is > 138MB/s or around 1.2Gbit/s. > > Now, USB2 has a theoretical bandwidth of 480Mbit/s, DVI has 4Gbit/s > (dedicated, with no protocol that also supports mice and stuff). And > DVI gets replaced by DP (8Gbit/s and more) because it can't keep up. > > Even if OpenBSD was super-awesome at graphics, video and usb (which it > clearly is not), it could not overcome the hardware limitations. Unless > the chip itself could do video decoding in hardware, but that is clearly > not something supported by a framebuffer driver. > > So... no way is this ever going to work. Thanks for the technical clarification.
> Your graphics card does nothing here, afaict. It's all purely done on > the CPU. Actually I find it kind of amazing that it works at all... Yes it is ! It is sufficient for me in many cases. -- Alexis de BRUYN
