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I've got a reply from Mensys about SNAP source code xD
OS4User:
the source of SDD is not that necessary as it may seam
to add new card someone has to have tech docs for this card anyway
some time ago i tried to find such docs - they are not open
on the other hand the grad driver is not very complicated itself
having docs it is better to write a new driver (like pano R200) rather than
add cards to SDD
SDD has multi platform design which is obsolete in our case thus we can make
a driver in simpler way
use SDD source to rebuilt it to be SMP friendly - is not very good idea too - supported cards very old and almost nobody use them
Dave Yeo:
--- Quote from: Boris on June 02, 2014, 08:45:30 pm ---Mensys owns SDD source code, and has even built a customized version for eComStation without serial code validation procedures and that annoying splash screen on startup.
Ah, and that was a joke. I was sure no one reads that form. ::)
--- End quote ---
Mensys only owns a license for the source code and my understanding is that they haven't done anything with it besides asking a developer or 2 to have a look at how hard it would be to fix the SMP issues (mostly easy)
Dave Yeo:
--- Quote from: OS4User on June 02, 2014, 11:06:46 pm ---the source of SDD is not that necessary as it may seam
to add new card someone has to have tech docs for this card anyway
some time ago i tried to find such docs - they are not open
--- End quote ---
Depends on the card. I understand the Intel video cards (actually built into MBs generally) are open.
--- Quote ---on the other hand the grad driver is not very complicated itself
having docs it is better to write a new driver (like pano R200) rather than
add cards to SDD
SDD has multi platform design which is obsolete in our case thus we can make
a driver in simpler way
use SDD source to rebuilt it to be SMP friendly - is not very good idea too - supported cards very old and almost nobody use them
--- End quote ---
I still find that SDD works much better then Panorama here on my older install where SMP is broken anyways. Colours are correct under SDL (perhaps a SDL bug) when using 32bit colour, monitor goes to sleep when the screensaver tells it to, by chance the MTRRs seem correct on both. SDD might still be easier to extend and some newer cards may be compatible with the older cards and just need enabling.
OS4User:
--- Quote from: Dave Yeo on June 03, 2014, 05:24:36 am ---I still find that SDD works much better then Panorama here on my older install where SMP is broken anyways. Colours are correct under SDL (perhaps a SDL bug) when using 32bit colour, monitor goes to sleep when the screensaver tells it to, by chance the MTRRs seem correct on both. SDD might still be easier to extend and some newer cards may be compatible with the older cards and just need enabling.
--- End quote ---
of course SDD is much faster than panorama - I run SDD + x850 and can tell that this pair is the best choice for os/2 for now
but adding new card to SDD is approximately the same as building new grad driver like panoR200
I tried to make it for my x850 - unfortunately met lack of docs
(all above is for 2D only, I have no idea how to use 3D acceleration)
Dave Yeo:
Forgot to mention that my Intel video is unsupported by Snap so its using the Vesa driver. I'm not knowledgeable to comment on how hard it is adding new cards but I'd guess the framework is there.
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