some more info about NVIDIA AR10 ("GoForce3D")

[ram]

This thing looks so boring, it could be that this is completly based on R&D at MediaQ, which planned a 3d enabled core even before they've been bought by NVDA.

I wouldn't count out that NVDA will anounce a much better 3d core anytime soon.

 

[Simon F]

Colour me biased but the few demonstration demos for PSP didn't exactly knock me out of my socks either, yet I am confident that SONY will have the better content after all.

To add to that, a reliable source has told me that, at a recent conference, Sony were explaining that their curved surface implementation can actually have cracks between the tessellated triangles.

"Nice".

 

[darkblu]

Colour me biased but the few demonstration demos for PSP didn't exactly knock me out of my socks either, yet I am confident that SONY will have the better content after all.

To add to that, a reliable source has told me that, at a recent conference, Sony were explaining that their curved surface implementation can actually have cracks between the tessellated triangles.

that could come useful 8)

 

[Simon F]

that could come useful 8)

OK, I'll bite. Even I can't think of a perverse use for that sort of "bug art".

 

[nAo]

To add to that, a reliable source has told me that, at a recent conference, Sony were explaining that their curved surface implementation can actually have cracks between the tessellated triangles.

I can confirm your source is reliable

 

[Ailuros]

Colour me biased but the few demonstration demos for PSP didn't exactly knock me out of my socks either, yet I am confident that SONY will have the better content after all.

To add to that, a reliable source has told me that, at a recent conference, Sony were explaining that their curved surface implementation can actually have cracks between the tessellated triangles.

"Nice".

Well the other stuff I've seen was either too dark or not worth mentioning. The "Death Jr." video to be found here:

http://zdmedia.vo.llnwd.net/o1/Death_JR/deathjb.zip

...was the only one that looks acceptable. I don't even know the game, if it's an older port or a new one.

Sony was explaining that they have cracks? It's a feature, not a bug. Quick get gaps in your implementation too

 

[MfA]

So when will cracks appear? Just when using fractional tesselation for continuous detail or in general?

 

[Kristof]

So when will cracks appear? Just when using fractional tesselation for continuous detail or in general?

From what I hear they can not have different levels of tesselation on different patch edges. So when 2 patches touch each other and one has a higher level of tesselation than the neighbouring patch then they will not line up, you effectively get cracks between the 2 patches. AFAIK there is also only integer tesselation levels not fractional. Then again I hear a lot...

 

[nAo]

Sony tells developers to use the same LOD for all the patches in a game character (so no cracks here) and to clear the screen with a 'fill' color to prevent seeing cracks in tesselated landscapes.

ciao,
Marco

 

[Simon F]

Sony was explaining that they have cracks? It's a feature, not a bug. Quick get gaps in your implementation too

Well there was a bug in an earlier version - perhaps I can resurrect it from the version control system.

So when will cracks appear? Just when using fractional tesselation for continuous detail or in general?

I'm led to believe it only has integer LOD and that is fixed across each patch, hence you get cracks if you try to vary the LOD across the model.

Edit. Ah I see K already answered.

 

[KimB]

From what I hear they can not have different levels of tesselation on different patch edges. So when 2 patches touch each other and one has a higher level of tesselation than the neighbouring patch then they will not line up, you effectively get cracks between the 2 patches. AFAIK there is also only integer tesselation levels not fractional. Then again I hear a lot...

That would seem to be an artifact for any HOS implementation.

 

[Kristof]

From what I hear they can not have different levels of tesselation on different patch edges. So when 2 patches touch each other and one has a higher level of tesselation than the neighbouring patch then they will not line up, you effectively get cracks between the 2 patches. AFAIK there is also only integer tesselation levels not fractional. Then again I hear a lot...

That would seem to be an artifact for any HOS implementation.

Errr... no... you just need to support different tesselation levels for each patch edge. If you want to support depth-adaptive techniques this is quite essential.

K-

 

[KimB]

Errr... no... you just need to support different tesselation levels for each patch edge. If you want to support depth-adaptive techniques this is quite essential.

K-

Oh, sorry, I misread your post. Wow, yeah, that's pretty limiting that you have to have the same level of tesellation on all edges of the same patch (I was solely thinking of neighboring patches).