forums.ps2dev.org Forum Index forums.ps2dev.org
Homebrew PS2, PSP & PS3 Development Discussions
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

hardware tessellation of polygons

 
Post new topic   Reply to topic    forums.ps2dev.org Forum Index -> PSP Development
View previous topic :: View next topic  
Author Message
Riviera Kid



Joined: 29 Oct 2005
Posts: 9

PostPosted: Sun Nov 13, 2005 4:06 am    Post subject: hardware tessellation of polygons Reply with quote

I understand that the psp has hardware tessellation correct?

well i havent got a notion of how to do it. I have done a search about but i cant find much on the subject.

Can anyone help me?
Back to top
View user's profile Send private message
chp



Joined: 23 Jun 2004
Posts: 313

PostPosted: Sun Nov 13, 2005 8:32 pm    Post subject: Reply with quote

There's a sample in the PSPSDK that shows the use of spline-surfaces, and I think there's something for pspgl aswell.
_________________
GE Dominator
Back to top
View user's profile Send private message
Ska



Joined: 10 Oct 2005
Posts: 4

PostPosted: Mon Nov 14, 2005 10:15 pm    Post subject: Reply with quote

Do u mean something like GluTess functions (given a list of countours2d, produce triangles in according with fill-rules, handling non simplicity, holes, intersections, and all other degenerations) but in hardware ? (incredible if real...)

Ska - Amanith Team
Back to top
View user's profile Send private message
jsgf



Joined: 12 Jul 2005
Posts: 254

PostPosted: Wed Nov 23, 2005 10:08 am    Post subject: Reply with quote

There's only curved surface subdivision. There's no general polygon tesselation.
Back to top
View user's profile Send private message Visit poster's website
Ska



Joined: 10 Oct 2005
Posts: 4

PostPosted: Wed Nov 23, 2005 5:01 pm    Post subject: Reply with quote

Eheheh ;) I see.
I've already implemented a software tesselator (like glutess one) for amanith framework, and i'm almost sure that it is impossible to do in hardware.

Ska - Amanith Team
Back to top
View user's profile Send private message
jsgf



Joined: 12 Jul 2005
Posts: 254

PostPosted: Wed Nov 23, 2005 5:23 pm    Post subject: Reply with quote

Yeah, I've done some myself. You could do it in hardware fairly easily if you exclude self-intersecting shapes. Then it's fairly easy, but not particularly useful, unless your hardware is specifically for rasterising 2D vector content.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    forums.ps2dev.org Forum Index -> PSP Development All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group