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DarkBASIC Professional Discussion / Add a glowing texture over model

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Davey B
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Posted: 22nd Aug 2010 17:37
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Hi, I've tried searching for this but cant find anything similar. I'm basically trying to add another texture layered on top of the original model texture to make some windows on the model glow (i.e emissive). Tried light maps but this just seems to darken my model and make the light areas barely visible. Am I going about this the wrong way? Any help is appreciated.

Cheers.
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Green Gandalf
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Playing: Malevolence:Sword of Ahkranox, Skyrim, Civ6.
Posted: 22nd Aug 2010 22:21
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Try the set blend mapping on command.
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Davey B
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Posted: 22nd Aug 2010 22:51
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cheers gandalf, I'm trying this option now. what setting mode would be needed for this? theres a lot listed and I have no idea what one would make a texture self illuminating...
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Green Gandalf
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Posted: 23rd Aug 2010 01:58
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You could start by trying these:



The first will multiply two texture arguments together but this tends to darken the object because colour values are coded in the range 0 to 1 in this case, so the result can never be brighter than the original. The next two compensate for this by multiplying the result by 2 or 4 respectively. The fourth just adds the two textures together which generally gives a bright, over-saturated result.

You might some of the examples posted on this thread helpful:

set blend mapping on
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Davey B
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Posted: 23rd Aug 2010 20:31
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Fantastic! Thanks gandalf that solved it for me. I used tex level 0 as d2d_modulate and tex level 1 as d3d_add which acts as my lightmap!



Just gotta improve the texture and scale the windows down a bit but its looking much better than it did before.
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