http://www.svencoop.com/forums/showpost.php?p=451887#7
[quote]EDIT: Ok, if I SKY the insides (and leave the outsides as NULL), it works.. except it shows SKY texture instead of the sky. Hmm.. tries something
EDIT2: worldspawn is set to use 'test' as the sky, which exists. It's a 256x256 pink and black checker pattern, 24-bit RLE compressed TGA (as a set).
EDIT3: Making the brushes be completely covered with SKY (no NULL) doesn't make a difference.. maybe it is the RLE compression?
EDIT4: Saving them again (from the PSD of the image) with RLE not enabled doesn't make a difference. (FYI, with RLE enabled the filesize is 2 KB and with RLE disabled the filesize is 194 KB.)
EDIT5: Setting color palette to indexed (2 colors counted) with both scenarios of RLE enabled and disabled doesn't change anything either.
EDIT6: Saving them as BMPs too (alongside the TGAs) does not make a difference either. In half-life.gcf, most but only a small handful of skyboxes have BMPs accompanying the TGAs. :X[quote]
Ok, my skybox isn't working. =(