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If you want to include your own textures,
you simply create them using an image editor
like Paint Shop Pro, and store them in the
etmain/textures/<yourmapname>
folder. They will need to have widths
and heights of 64, 128, 256 or 512
pixels. If your image isn't precisely
any of those sizes, maybe it's an irregular
shape like a person outline, then make the
dimensions of the image just large enough to
accommodate your irregular picture, still
keeping to one of those 4 pixel sizes, and
just use black for the unwanted image area.
You can always crop a brush to remove the
unwanted black surround.
All textures have a shader, even the ones
you haven't created a shader for. This
is because ET uses a default shader for any
texture lacking a user-defined shader.
A shader tells ET what special properties
apply to the faces with this texture on
it. The default shader would have
things like: use the default footsteps
sound, the textured face blocks players and
bullets and missiles, the faces should show
bullet holes and scorch marks etc.
If you wanted areas of transparency you
must create a shader for your texture, else
the transparent area will just show as black
or whatever colour you used to represent
transparent.
We'll cover shaders later on.
Be aware that if you made a cubic brush
and applied your texture to all of them, 3
would show your image as is, and 3 would
show a mirror image of it. If you had
writing on your texture you'd need to make a
copy of it, apply your own mirror image, and
use that one for the 3 "wrong"
faces.
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