Kelvin, Kyle, Michael, Thank you all for the feedback on this problem. The problem did indeed exist for 'ogl_install_check' as well, and Kelvin's 'gamma correction' suggestion fixed the problem very nicely. The gamma value of 1.0 giving me a close match to what I see on my PC, and also to what I consider to be 'correct' i.e. where my textures rendered via Java3D closely resemble what the original textures look like when viewed in GIMP.
Thanks to you all for your help on this not-strictly-Java3D problem - I'm now a very happy person as this issue has been annoying me since I acquired my SunBlade 4 weeks ago. Regards, Rob Kelvin Chung wrote: > Hi Rob, > > This is the reply from one of our engineer that you may > found useful: > > ------------------------------------------------------ > If "screen shot" uses XReadScreen(), then the pixels will be > read back directly from the framebuffer without gamma correction > applied. Gamma correction is not applied during video refresh > until after the framebuffer contents have been read. > > The default gamma correction value is 2.22. Try: > > fbconfig -dev ifb0 -G 1.0 > > or > > fbconfig -dev ifb0 -G 1.6 > > to see which value is closer to the PC. > > ---------------------------------------------------------- > > - Kelvin > > > Rob Nugent wrote: > >> This is likely a question for my (distant) colleagues in the Java3D >> group: >> >> I'm running Java3D 1.3 with OpenGL 1.2.3 on Solaris 9 on a SunBlade 2000 >> with an Expert3d-lite video card. >> >> The trouble is that all my colours appear 'washed-out', i.e. as if there >> was a uniform white fog in the picture. I suspect that this is a problem >> with the OpenGL renderer/the video card rather than Java3D, since if I >> capture a screen shot (say using Gimp->acquire) the Gimp window showing >> the screen shot appears in the *correct* colours. Very puzzling. >> >> The colours appear correcty under Win2000/GeForce2Ti/OGL, and also when >> running the app under Solaris but using a remote display running on a PC >> running an XWindows emulator with GLX support. >> >> Any suggestions as to how to diagnose this further would be greatly >> appreciated. The problem occurs with both my app *and* J3dFly. >> >> Thanks >> Rob >> -- >> >> >> Rob Nugent >> Sun Microsystems, Southampton, UK >> >> [EMAIL PROTECTED] >> >> Tel: +44 (0) 1489 585503 >> Fax: +44 (0) 1489 881363 >> >> =========================================================================== >> >> 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". -- Rob Nugent Sun Microsystems, Southampton, UK [EMAIL PROTECTED] Tel: +44 (0) 1489 585503 Fax: +44 (0) 1489 881363 =========================================================================== 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".
