[MacGLQuake] main source of slowdown in GlQuake

[The Greenwood's]

>1. GLQuake is faster than RAVE or 3Dfx Quake (well, at least 3dfx... don't
>use RAVE too much).

Hmm, I'll have to do some timedemos and find out what the exact numbers are.

>2. GLQuakeWorld is slower than the respective versions.
>
>3. The GLQW frame rate seems to be capped at ~62 fps. Even when standing
>flat against a wall, the frame rate never exceeds 62. Look outside on even
>one of the smaller Team Fortress maps and the frame rate drops drastically.

Check the cl_maxfps cmdline option, possibly it's set at 62?  Personally, I
keep mine at 40 to reduce lag.  btw, how are you measuring those frames per
second?  Using "timerefresh," I have found the numbers to vary wildly and
be totally unreliable.  The only way to get good numbers in Quake is with
"timedemo," which I assume doesn't work in quakeworld?

>Disabling dynamic lighting doesn't help.

Of course, that would only help the framerate if there were dynamic lights
in the screen being rendered.

>There isn't much you can do to speed up dynamic light rendering. If you want
>to _totally_ get rid of dynamic lights, set both GL_FLASHBLEND and R_DYNAMIC
>to 0.  As far as I can tell, rendering dynamic lights in Quake1 and Quake3
>results in similar performance >drops.

Do the gl_flashblend flashes count as lights? I didn't know that.

Perhaps it's a weirdness of my computer (G3, Rage 128) but I can garantee
you that the same room, with dynamic lights, plays much faster in RAVE
Quake than in MacGLQuake.

Now, the timedemos to prove it:

run with the cmdline settings:
-width 800
-height 600
-16bpp
-mtex
-notcpip
-noipx
-noatalk
-nojoy
-nocdaudio
+timedemo demo1

MacGLQuake
gl_flashblend 1:  avg 32.4 fps
gl_flashblend 0: avg 32.7 fps

RAVE Quake
gl_flashblend 1: avg 36.5 fps
gl_flashblend 0: avg 36.6 fps

Alright, I'm wrong.  RAVE runs slightly faster, but I guess dynamic lights
don't hurt the framerate in GLQuake near as much as I thought.  Maybe they
did in an older version or something.

 - Grahf, a.k.a. Owen Greenwood