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On Wed, Feb 13, 2002 at 08:24:14PM -0600, Curtis L. Olson wrote: > the moon is using a blend mode other than the default blend mode > so that we can blend it into the gradient sky. Thanks, that was exactly the information I needed to get me started. In my first try I changed the call to glBlendFunc(): In SimGear-0.0.17pre2/simgear/src/sky/moon.cxx: sgMoonOrbPreDraw() - line 55: glBlendFunc ( GL_SRC_ALPHA, GL_ONE ) ; + line 55: glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ; That worked, but made the moon look ugly. I could have been satisfied at this point and take the ugly moon for granted. However, on a hunch, I changed line 55 back and in sgMoonOrbPostDraw() uncommented line 65: - line 65: // glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ; + line 65: glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ; That works, _and_ produces a nice moon. So it appears that the problem lies not with the blend function itself, but in the way it is (not) handled by glPushAttrib()/glPopAttrib(). Does anyone object to leaving line 65 uncommented for now? Any leads for a more permanent solution? > Yes, I wish there was more choice in the 3d graphics world. You could > always try an ATI card. I'd love to. Please send plenty of money. :) > I personally have very few complaints about my nvidia card. If it works, it works. As long as it is supported. Not a problem if you have enough financial room for regular upgrades, and don't care what happens to your old cards. And that's all I'm going to say about it on-list. - -- Regards, () =Martin= ASCII Ribbon Campaign Against HTML Mail /\ PGP: FE87448B DDF8 677C 9244 D119 4FE0 AE3A 37CF 3458 FE87 448B From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: [Flightgear-devel] 0.7.9pre2 In-Reply-To: <[EMAIL PROTECTED]>; from [EMAIL PROTECTED] on Wed, Feb 13, 2002 at 08:24:14PM -0600 X-S-Issue: [EMAIL PROTECTED] 2002/02/14 13:42:54 f012d29695f35ee4e2e4d2c72a6eae85 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) iEYEARECAAYFAjxrsNUACgkQN880WP6HRIsv5ACgt3uHfI4AvYQ8Wwt/ExYxUmxm qZIAn233KiFrOVUvZvIT5rZ6iwOB5jcK =vN69 -----END PGP SIGNATURE----- _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
