Some Obscure Problem

[Alex Deucher]

On 5/10/05, Bora Sahin <bora.sahin at ttnet.net.tr> wrote:
> Hello,
> 
> Jerome> I think we face the same problem visual problem with r300 & 2d acceleration..
> Jerome> Having a picture (even digital camera could help a lot to see it exactly :))
> 
> Jerome> Something like this  ?
> Jerome> http://dj.planet-d.net/Capture.png
> 
> Jerome> Thus if it's same problem it's simply a endianness issue. If you see
> Jerome> not artifact
> Jerome> in 640*480*8 this is most likely because this is a 8bits modes...
> 
> I tried 8 bit depth(Xorg uses PSEUDOCOLOR) and no success. But my working area is a xterm:
> background - white, foreground - black(Characters). So if my assumptations are correct, depth is
> not problem in this case. The problem is pixel locations. I didnt put e.g. the pixel which has
> (50,50) coordinate to the correct point in the frame buffer. Is this a correct approach to the
> problem?
> 
> Secondly, If my card supports byte switching, I should do that in SMI_MapMem() function before the
> the first [in|out][16/32] call? I am asking this because I didnt do any video driver work before and
> dont know Xorg stuff much.(My first tries) Although there are other function calls before
> SMI_MemMap(), I dont think they do in/out but I want to be consistent with general guidelines before
> doing it...

Silicon Motion has full databooks available on their website for all
their chips.  They may be helpful in figuring out the hw side.

> 
> Thanks in advance...
> 
> --
> Bora SAHIN
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