Dreamora: thanks for the detail. I understand some of what you say, but some is above my level, oh well. I understand about repeating of the texture and the need to clamp it, but as you say the code is probably bitchin.
I've certainly seem the BMax viewport not work properly on some video cards (it just didn't apply it at all), it was probably the DX viewport. If BRL fixed it (if that was even possible), that would indeed solve my problems, but I don't know enough to fix it myself.
Sadly I may have to give up on this now. I have another thread running ( http://www.blitzbasic.com/Community/posts.php?topic=73042 ) about pre-rotating a pix-map and drawing that clipped. That would work for me.
I've certainly seem the BMax viewport not work properly on some video cards (it just didn't apply it at all), it was probably the DX viewport. If BRL fixed it (if that was even possible), that would indeed solve my problems, but I don't know enough to fix it myself.
Sadly I may have to give up on this now. I have another thread running ( http://www.blitzbasic.com/Community/posts.php?topic=73042 ) about pre-rotating a pix-map and drawing that clipped. That would work for me.