Luigi Rella (rella++at++aguirre.ing.unifi.it)
Tue, 21 Jan 1997 18:28:04 +0100
I have a large digital model highly detailed.
Presently I build the terrain dividing it in N x M sub-models grid (like a
chessboard) and attach each sub-model under a matrix of pfSCS.
---------------------------------
| | | | |
| | | | |
---------------------------------
| | | | |
| | | | |
---------------------------------
| | | | |
| | | | |
---------------------------------
Starting from a sub-model I obtain two new less-detailed sub-models through
sub-sampling of the original one. These three sub-models then are attached to
a pfLOD that manages the long distance parts of the terrain.
pfSCS
|
-------------- pfLOD ------------
| | |
| | |
sub-model i sub-model i sub-model i
(low detail) (medium detail) (high detail)
On each sub-model (at all resolution), I apply a satellite image of the terrain
as a texture.
Without textures I have a frame rate of 15 Hz and the navigation is quite good.
But when I apply the textures I obtain very poor performance.
Someone have suggestion to improve the performance?
Can I build the model in a different way?
How can I manage the texture to have the low occupation of TRAM?
Thank in advance.
I'm running pf2.1 on a Indigo2 with R10K, Irix 6.2, 1 TRAM , 128MB RAM.
------------------------------------------------------------------------- | | | Luigi Rella | | | | Visual Information Processing Lab. | | CS Dept. - University of Florence | | e-mail: rella++at++aguirre.ing.unifi.it | | tel: +39.55.4796365 | ! | ----------------------------------------------------------------------- ======================================================================= List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/ Submissions: info-performer++at++sgi.com Admin. requests: info-performer-request++at++sgi.com
This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:54:25 PDT