On Mon, 19 Jun 2006 23:12:05 -0700 syd & sandy <[EMAIL PROTECTED]> wrote:
> I know this was discussed a while back , and if there was a solution I
> think I missed it.
> So I'll stick my neck out and ask ....
> I used to get better framerates night flying, unless I enabled enhanced
> lights.
> Now it doesnt matter if enhanced lights are enabled or not , I get the
> low framerates as soon as the airport lights come on. Ive got a 1.1 gig
> AMD Athalon , with a Geforce 4 MX4000.
> Average framerates are 25 - 30 , and drop to about 8 looking at KSFO at
> night.
> Is there a way to get the old style lighting back? Ive looked through
> the code but haven't sorted that out .
> I apologize if I missed the solution , if its been posted , but I'm
> working on the cockpit lighting for the 777-200 , and its frustrating
> enough that I give up after a while .Well , that and whatever recent
> change that has caused the program to sit at "Initializing subsystems"
> for a good 4-5 minutes.
> Thanks for any help, I really think its a fantastic program , and wish I
> had time to brush up on my opengl programming so I could contribute more
> than just aircraft.
I give up on the sourceforge mail archive and I therefore reproduce my
mail below; you can solve your problem by applying the provided patch:
===============================================================================
From: Jean-Yves Lefort <[EMAIL PROTECTED]>
To: flightgear-devel@lists.sourceforge.net
Reply-To: flightgear-devel@lists.sourceforge.net
Subject: [Flightgear-devel] performance and appearance issues with point sprites
Date: Sun, 5 Mar 2006 06:42:17 +0100
X-Mailer: Sylpheed running on FreeBSD
A little table (GeForce4 MX 4000, 1280x960) for fgfs --timeofday=midnight:
point-sprite enhanced-lighting fps runway/taxiway lights
===========================================================================
false false 18 steady pixels [1]
false true 2 steady thick points [1]
true false 11 dim and blinking pixels [2]
true true 11 steady thin points [3]
[1] Identical to CVS < 20060126.
[2] Nice for christmas, but otherwise completely broken. This is what
I get without the patch.
[3] Best attempt at looking like a real airport, I'd use this on a
more powerful system.
Enabling line-smooth removes about 7 fps from these figures.
See the attached patch (I think point-sprite and line-smooth should be
disabled by default).
--
Jean-Yves Lefort
[EMAIL PROTECTED]
http://lefort.be.eu.org/
[flightgear-perf.diff text/plain (1.3KB)]
Index: src/Main/renderer.cxx
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/Main/renderer.cxx,v
retrieving revision 1.44
diff -u -r1.44 renderer.cxx
--- src/Main/renderer.cxx 21 Feb 2006 01:19:19 -0000 1.44
+++ src/Main/renderer.cxx 5 Mar 2006 05:29:14 -0000
@@ -222,8 +222,9 @@
glFrontFace ( GL_CCW );
// Just testing ...
- if ( SGIsOpenGLExtensionSupported("GL_ARB_point_sprite") ||
- SGIsOpenGLExtensionSupported("GL_NV_point_sprite") )
+ if ( (SGIsOpenGLExtensionSupported("GL_ARB_point_sprite") ||
+ SGIsOpenGLExtensionSupported("GL_NV_point_sprite")) &&
+ fgGetBool("/sim/rendering/point-sprite"))
{
GLuint handle = thesky->get_sun_texture_id();
glBindTexture ( GL_TEXTURE_2D, handle ) ;
@@ -232,7 +233,8 @@
// glEnable(GL_POINT_SMOOTH);
glPointSpriteIsSupported = true;
}
- glEnable(GL_LINE_SMOOTH);
+ if ( fgGetBool("/sim/rendering/line-smooth") )
+ glEnable(GL_LINE_SMOOTH);
// glEnable(GL_POLYGON_SMOOTH);
glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
===============================================================================
--
Jean-Yves Lefort
[EMAIL PROTECTED]
http://lefort.be.eu.org/
pgpuRvu4VKXw7.pgp
Description: PGP signature
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