Lightmap baking problem_new

SunSetter

Hi, I have a scene and just wanted to bake a lightmap for it. So everything for diffuse is on ch 1 in uv and for lightmap everything is unique mapped in ch 2.
here is the scene and the baked lightmap, and uv for it.
the problem is that I got "spots of light and shadows" in my baked lightmap.
it appears to be from the sky light, when on. without the sky light I get a really dark lightmap and leveling in ps doesn't help.
I used free direct, photometric lights, mental ray and scanline to bake and I cannot get a clean lightmap .


this one is with the light on and hardware display, aprox this result I should get with the light map, but I'm far from getting the shadows correctly.


Btw, a strage thing is that after aplying the lightmap on the mountain it changes the uv or the tile, 90degress :-o...I don't understand why is that, because I'm using tiles on the terrain as well and those remain intact after aplying a dx lighmap shader. --> me stupid, I was rotating the texture 90degress in the diffuse slot )


Thanks in advance

SunSetter

anyone?!

Eric Chadwick

Those "errors" are simply your low-res mesh being lit. You could try using meshsmooth to up the res of the model at bake time, but that tends to cause other problems like UV edge errors, holes, etc. I would just smudge em out if you don't like them.

I would also advise turning off shadow-casting for the grass planes, it only reinforces the hard edges of your grass planes.

Mime

EricChadwick wrote: »

Those "errors" are simply your low-res mesh being lit. You could try using meshsmooth to up the res of the model at bake time, but that tends to cause other problems like UV edge errors, holes, etc. I would just smudge em out if you don't like them.

I would also advise turning off shadow-casting for the grass planes, it only reinforces the hard edges of your grass planes.

^
Also i found that you can export your level to mudbox apply the lightmap as a regular texture and use the painting tools to correct or improve the lightmap bake.

Isn't this a Gameloft art test ?
Looks extremely familiar. Just sent mine a couple of weeks ago .

SunSetter

Hi,
thanks Eric. I did some tests and I found that baking in 2010 removes the problem using the daylight system.

Mime, thanks for the tip. and yes, its a gameloft test )