Dealing with different textures

[danielj]

My system is a Athlon XP 1800,256 MB DDR256,Geforce 4 MX 440SE 64 MB,a 60 GB Maxtor HD and Windows XP.I was deling very well with RealisticeEarth16k,a dds 16k texture of Earth,but surprise,surprise...Celestia crashes when I added 8k png textures and bumpmaps for Callisto.it?s a bit strange.Now I am turning for a 4k png Callisto texture.Could the problem be only the texture and bump added at the same time?Is png worst to load than jpg?

[Bob Hegwood]

Daniel,

It depends on what compression rate you're using to save the file. Some png's can be HUGE, especially if you don't use any compression. Have a look at the files you wish to use via a program called "Pixia." This is a freeware program which I have used to re-size/re-sample all of my large png's and jpegs. I have converted many 8k texture files into a 1024x512 format so that I can use the files on my poor, limited machine as described below.

Pixia can be had at the following: http://www.ab.wakwak.com/~knight/

Hope that helps.

Take care, Bob