it that time of the year again and i've once again picked a track that i feel could use a little graphical update. this time it's laguna seca - beautiful and challenging track. same goes for the texture creation process.
so far i'm done with the asphalt and the grassy bits..
so when i went to do a quick new wiremesh fence texture (2048x1024) - and yes, i know smaller would be better, but the rig can handle it, ...


while winmip is a tool i really like and basically use to convert all my textures from .bmp to .mip in, it somehow will not do what i want it once transparency is involved.
here's what happens:
i did my texture in such a way, that i filled the background with a flat green back (rgb: 0,255,0), so that i would have an easy choice for a transparency color. so then i load my 24bit .bmp with the texture in it into winmip, change the type to mip, subimages 7 (as is my custom), mapping to 0. and then there's the choice what type of mip to create - and frankly, i tried them all. say i go for type 4 and via click or shift-click (as it seems to do the same anyway) i select the green background color easily enough. so it shows up in the tiny box and all is well. so then i save the .mip file, copy it into the track directory and start gpl... almost all is fine then. the texture loads, it has a transparency in it - even where i wanted it, BUT what's with the green outline around everything? DOH!
i tried other ways - no go.
so how can i use winmip to that effect? if anyone has pointers, it would be greatly appreciated. same goes for seperate transparency maps - as i already created one, i'd like to use it, but have so far not been able to load both the texture .bmp and the transparencymap .bmp into winmip to create one .mip that includes both. also how would i go about this process if i want to create a texture that has transparency gradients? that is a proper mystery to me. i would like to create a few trees of the like you see in battlefield (if anyone of the racing community even knows that game - the trees really rock!

- i can post pictures of the track as it is right now and off the worrying texture issues as well if need be.
r.
/edit
thanks to a fairly long earch at rsc, i was able to locate a tip that got rid of the fringing issue - simply use color 51,51,51 (r,g,

is there anybody out there who can shed some light on the workings of that?
or if possible, if someone has a detailed description of the .mip-file format, i may get it in my head to unearth my old programming tools and write a converter myself. it's been know to have happened before and after all a dosbased tool isn't that hard to write...
dangermouse EDIT: Changed title of thread to attract attention.
Edited by dangermouse, 26 August 2006 - 10:26 AM.