[SDL] request

[Gabriele Greco]

At 03:39 PM 6/6/02 +0200, you wrote:
>Average update time: 14.2ms
>Do you really think it should be faster ? If so, what's wrong ?
>PIII 933
>nVidia GeForce256 SDR
>Linux kernel 2.4.18
>nVidia drivers 1.0-2880
>XFree86 4,1
>1280x1024 24bpp

I've made some tests and on my system here at work and I've also worst 
results:

Average update time: 25ms

My system is anyway older than yours:

K6-3 450
Matrox G400 (AGP 1x for MB limitations)
Linux 2.4.10
XFree86 4.2
1280x1024 24bpp (32 real)

Anyway with some counts the amount of time is not that strange...

800x600x4 = 1920000

1920000 x 50 = 96000000

So you need 96MB/sec of bandwidth to have a frame each 20ms (50fps), that's 
a lot of datas, since you have also to read them from memory and cache 
don't help in this kind of operations...

I suggest you to try to make the game run in 16bit, so you could have 
almost double framerates and the quality will be almost equal.


Bye,
  Gabry (gabrielegreco at tin.it)