On Wed, 3 Apr 2013 09:26:46 -0300, Werner Almesberger wrote:
sebastien.bourdeaud...@lekernel.net wrote:
this is old news if you follow IRC or Twitter, but it appears
possible to crank up the framebuffer resolution to "full HD"
1920x1080 32bpp on M1 using milkymist-ng:
Even if it's old news, it's still awesome :-)
Thanks!
That's almost three times the resolution of the original design,
and more than five times its memory bandwidth, isn't it ?
Compared to the original 640x480 16bpp framebuffer, that's exactly 13.5
times the memory bandwidth at nearly 4 Gbps. However, with the
Flickernoise renderer, the texture mapping unit - which is not present
here - is a major user of bandwidth. Typical total memory bandwidth use
in FN is about 2 Gbps, and the system chokes at around 3. Milkymist-ng
on M1 provides about 10 Gbps peak, and should make it easier to reach
this sort of bandwidth thanks to out-of-order processing and a large
number of transactions processed in parallel in the controller.
Sebastien
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