Halo around transparent objects showing backdrop?

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Sephnroth

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Joined: 10th Oct 2002

Location: United Kingdom

Posted: 15th Oct 2005 13:59

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Hey,
Well i have been playing around with plant life and i made myself a fern which i added to one of my dungeon tiles and exported a .x. Obviously the fern needs transparency but for some reason there appears to be some sort of halo and random lines where EVERY single 3d object behind the halo/line is not drawn and i can see right through to the backdrop..

I have tried messing with cull, transprency 1 and 2, changing the texture from a png with an alpha channel to a simple bitmap to use mask transparency instead of alpha and what not. Nothing seems to work. Have made an example simple project which with media which i will attach to this post.

Anyone know how to fix this?

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Grossman

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Posted: 15th Oct 2005 14:32

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I use flag 4 (as well as 2 or 3), and texture transparency works properly. Or, you can try to render your textures on green (rgb 30.255.0) background and set the colorkey.

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Sephnroth

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Posted: 18th Oct 2005 17:50 Edited at: 18th Oct 2005 17:50

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Hey,
I have tried it using set image colour key and a mask of 30, 255, 0 and 255, 0, 255 and 0, 0, 0 (changing the texture each time accordingly) and i have tried transparancy modes 1~4 (just the second parameter of dbSetObjectTransparency right?) and ALL have the same result. the majority of the transparent part of the texture is transparent properly, but then there is like a halo and some random lines where you can see the backdrop of all things (if i change backdrop colour, halo and line colour change to prove it).

Heres a screenshot:

the 3d object i originally made in milkshape and had no transparancy, just this rectangular excuse for a bush. Then when i got plant life i made some ferns in there, exported as .txt, imported in milkshape and replaced my old rectangular bush with them and then exported a .x which is what im loading. I REALLY need this fixed T_T

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Miguel Melo

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Posted: 19th Oct 2005 15:56

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Just a thought... try disabling the filtering on the fern texture: i.e. make it not do bilinear/trilinear filtering (bluring). I don't know how you do this in DGDK specifically, but colourkeying doesn't work well with filtered textures, because you get the key color blured and this will cause halos.

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