RE: Index16 vs Index32 for index buffer
"Remy Saville" <[email protected]>
| Newsgroups | gmane.games.devel.opengl |
|---|---|
| Organization | Fat City Network Services, San Diego, California |
| Message-ID | <[email protected]> |
Thanks :) I can't really make a valid guess, beyond the obvious ones, at why it was only noticeably faster to use 16 vs. 32 on the nv1x in our tests. If the hardware guys recommend something and it doesn't cause a slow down then do it. :) -----Original Message----- Don Gunter Sent: August 18, 2005 9:04 AM To: Multiple recipients of list OPENGL-GAMEDEV-L !!!! Homeworld 2!!!! Yeah, I loved it. Better graphics than the first couple but I liked the TAC on the older ver. Where do you think the performance gain came from? Accessing the "unaligned" word or the transfer to the card? Or other? <think think think> you guys are sometimes quiet, but each thing I get has given' me tremendous returns. Keep 'em coming. I want.. NEED<grin> more time for content. Ya'll have a GREAT day! Don Gunter -----Original Message----- Saville Sent: Tuesday, August 16, 2005 1:34 PM To: Multiple recipients of list OPENGL-GAMEDEV-L During Homeworld 2 I did some benchmarks and found on some nv1x cards there was a small boost when we switched to 16 from 32. I didn't notice any difference on any other cards I tested with though. -----Original Message----- Igor Kravtchenko Sent: August 16, 2005 11:24 AM To: Multiple recipients of list OPENGL-GAMEDEV-L I wondered if there is some issues and important things to know about optimisation between the fact to use Int16 or Int32 for its index buffer under OpenGL. By having used Direct3D for a very long time, I'm used to Int16 which is the only supported index depth bits on today's video card. Nevertheless, OpenGL allows to use Int32 as well as Int16. In a general manner, is it "bad" to use Int32 for its index buffer? Does just the driver convert them back to Int16 without any performance loss? Any remark or hint are welcome. Thanks, Igor. ----- FAQ and OpenGL Resources at: http://www.geocities.com/SiliconValley/Hills/9956/OpenGL -- Author: Igor Kravtchenko INET: [email protected] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [email protected] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB OPENGL-GAMEDEV-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). ----- FAQ and OpenGL Resources at: http://www.geocities.com/SiliconValley/Hills/9956/OpenGL -- Author: Remy Saville INET: [email protected] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [email protected] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB OPENGL-GAMEDEV-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). ----- FAQ and OpenGL Resources at: http://www.geocities.com/SiliconValley/Hills/9956/OpenGL -- Author: Don Gunter INET: [email protected] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [email protected] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB OPENGL-GAMEDEV-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). ----- FAQ and OpenGL Resources at: http://www.geocities.com/SiliconValley/Hills/9956/OpenGL -- Author: Remy Saville INET: [email protected] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [email protected] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB OPENGL-GAMEDEV-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).