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2002 Ground alpha and LM

Horst18519

Horst18519

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Once more I came across an issue I never had to face before, this time dependency of alpha channel and night map using tweaked 2002 ground polys.

I use a ground polygon DXT3 with alpha channel. I also use a LM texture with its own alpha channel, for technical reasons this is a different alpha than the diffuse alpha.
For some reason the night map uses the diffuse alpha though, is this a known limitation?
 
arno

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Hi,

Are you talking about FSX here? In that case it is indeed a known limitation.
 
Horst18519

Horst18519

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Thanks for the reply. Does that mean that in FS9 this method would work?

There's no way tweaking the ASM file so that either different alphas can be used or maybe the diffuse texture does not show, just the LM at dusk-dawn?
 
arno

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Hi,

If I remember correctly it should indeed work in FS2004. And no, there is no tweaking to influence this behaviour.
 
Horst18519

Horst18519

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Ok, thanks. I'll try to tweak the file so that different texture sets are used depending on the "time of day" var.
 
Horst18519

Horst18519

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Hmm, it should be possible to tweak the file for using different texture sets depending on the time of day var, shouldn't it?

What's wrong with my tweak?

TEXTURE_LIST_BEGIN

IFIN1 tex_night, 028ch, 1, 1 ; time of day is not Day
TEXTURE_DEF TEXTURE_AIRCRAFT , <255,255,255,255>, 2282.815174, "DTTJ_GROUND_SHADOWS.BMP" ; 0
TEXTURE_DEF TEXTURE2_NIGHT , <255,255,255,255>, 2282.815174, "DTTJ_GROUND_SHADOWS_LM.BMP" ; 1
JUMP tex_end

tex_night label word
TEXTURE_DEF TEXTURE_AIRCRAFT , <255,255,255,255>, 2282.815174, "DTTJ_GROUND_LIGHTS.BMP" ; 0
TEXTURE_DEF TEXTURE2_NIGHT , <255,255,255,255>, 2282.815174, "DTTJ_GROUND_LIGHTS_LM.BMP" ; 1
tex_end label word

TEXTURE_LIST_END
Click to expand...
 
arno

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Hi Thorsten,

You can't put the condition in the texture list. The texture list should just contain all textures used, you put the condition around the command that selects the texture (SET_MATERIAL).
 
Horst18519

Horst18519

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I've seen that in the Wiki, but a friend told me he uses a code like that for seasonal tweaking. I guess I'll just try the other way.
 
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