Thanks Kevin - this is good news. I did recall that there was a post from the Java3D team to the effect that the USE_COORD_INDEX_ONLY bit will use glDrawElements() and would prevent "unindexification" and may also produce enhanced rendering on some graphics cards. I am actually more interested in the unindexification part since my geometries are huge and dynamic and I usually indexify them to conserve memory. The enhanced rendering would, of course, be a bonus.
Thanks for the extract - couldn't actually find it anywhere in the Java3D bundle though. Regards Raj Vaidya >On Mon, 3 Dec 2001 12:01:29 -0800, Kevin Rushforth <[EMAIL PROTECTED]> wrote: >The intent is to allow Java 3D to avoid unindexifying the geometry, if >possible. No guarantee, though. Here is the description from the >1.3-beta review package: > > "...we propose to add a new USE_COORD_INDEX_ONLY flag to the > vertexFormat in GeometryArray. If the vertexFormat is > USE_COORD_INDEX_ONLY, then the values in the coordIndex array > are used as indices into the coord, color, normal, and texCoord > arrays. The colorIndex, normalIndex, and texCoordIndex arrays > are ignored. This may perform better in many cases and may > allow Java 3D to avoid unindexing the IndexedGeometryArray." > >Hope this helps. > >-- >Kevin Rushforth >Java 3D Team >Sun Microsystems > >[EMAIL PROTECTED] > > >>Date: Mon, 3 Dec 2001 11:53:56 -0700 >>From: R Vegan <[EMAIL PROTECTED]> >>Subject: [JAVA3D] Ques. on GeometryArray.USE_COORD_INDEX_ONLY >>To: [EMAIL PROTECTED] >> >>Need clarification on the following: >> >>By setting the new USE_COORD_INDEX_ONLY capability bit introduced in >>Java3D 1.3, could one instruct Java3D *NOT* to unindexify >>indexed geometry before rendering ? It would really help if this is >>indeed true, but the html doc. does not specifically mention it. >> >>Regards >> >>Raj Vaidya >> >>=========================================================================== >>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >>of the message "signoff JAVA3D-INTEREST". For general help, send email to >>[EMAIL PROTECTED] and include in the body of the message "help". > > ========================================================================== >To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >of the message "signoff JAVA3D-INTEREST". For general help, send email to >[EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
