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+--- Thread: about lighting (/showthread.php?tid=2947)
about lighting - hutty - 04-21-2012
a couple things
1 -- I discovered rlights a few days ago ... and I am very fond of chronas ... is there any way to either add a chrona without a rlight ... or make an rlight with no light but big chrona?
2 -- Can I shine a regular light through a colored glass texture and get a colored shadow?
edit ...
3 -- not really lighting based but ... if I'm making a plant with a lot of leaves ... is it better to make polygon leaves? or transparent image leaves
RE: about lighting - torus - 04-21-2012
Best way to find out the answers is to try it. But I believe you can cast colored shadows through colored glass using RTlights... there was a map in a church setting that demonstrated this. Correct me if I'm wrong.
RE: about lighting - TH3FTB0T - 04-22-2012
Maybe a shader sprite?
RE: about lighting - Maddin - 04-22-2012
1. Don´t know. You could make a rlight with a really small light value and add a corona to it. Try it out!
2. Yes. I don´t exactly know how this works but it is possible. Search for "coloured alpha shadowing" or something like that.
![[Image: 220729882_9a77fbf986_o.jpg]](http://farm1.static.flickr.com/59/220729882_9a77fbf986_o.jpg)
3. Definitely transparent image leaves! Saves a lot of triangles and hasn´t such a huge impact on performance.
RE: about lighting - Mr. Bougo - 04-22-2012
Fun!
RE: about lighting - Leeloo - 04-22-2012
Wow, I am so ignorant about mapping!
RE: about lighting - tZork - 04-22-2012
#2 is done with http://q3map2.everyonelookbusy.net/shader_manual/ch4.htm#alphashadow iirc
tough lightmaps being rather low res usually, you may get better results from faking it with a blendfunc add decal.
RE: about lighting - hutty - 04-22-2012
ok ... thanks ...
about leaves ... assuming I have the same number of leaves regardless of which method I use .... wouldn't having many transparent leaves slow down the system more? (like staring through several layers of glass)
RE: about lighting - Mr. Bougo - 04-23-2012
(04-22-2012, 04:39 PM)tZork Wrote: #2 is done with http://q3map2.everyonelookbusy.net/shader_manual/ch4.htm#alphashadow iirc
tough lightmaps being rather low res usually, you may get better results from faking it with a blendfunc add decal.
Aah, okay. I thought he was still talking about rtlights in 2.
RE: about lighting - Maddin - 04-23-2012
(04-22-2012, 07:49 PM)hutty Wrote: about leaves ... assuming I have the same number of leaves regardless of which method I use .... wouldn't having many transparent leaves slow down the system more? (like staring through several layers of glass)No, as far as I can remember transparent areas in a texture don´t have any significant affect on the performance whereas a different number of polygons have.