Thread: 3D acceleration for the N8x0
View Single Post
JustNick is offline JustNick
2008-02-21 , 14:12
Posts: 269 | Thanked: 93 times | Joined on Feb 2008
#14
Originally Posted by fanoush View Post
Yeah, that's the problem, but we can't help you with that :-)
that wasn't very kind... actually it was no light offence, but I guess that you're fanoush and as long as I use your initfs to boot from SD I can take it


Originally Posted by fanoush View Post
AFAIK there is no 2d acceleration on the epson chip. To scroll page one pixel up you need to transfer whole frame to the epson chip again. There is scaling or pixel doubling(=2x scaling) with intepolation, color space conversion, rotation, but everything is applied on the fly to rectangle sent to the chip. There is no operation that can move pixels already transferred to the epson chip (=scrolling).

Datasheets here
http://lists.maemo.org/pipermail/mae...ry/014656.html
I just read all the discussion, you never stop to learn something new
About the Epson controller I'm pretty shocked about its performances (or the lack of), I'll read better the datasheet later, but it seems there's not much to be happy for
Just one last question: on the E90 they use 2d/3d acceleration, the screen is almost the same size as n8x0, the cpu is the omap2140, so, due to hardware limitations in screen resolution did they use an external chip for graphics or did they stick with the integrated accelerator and just used a better interface than the S1D13745?
Thanks