Light not projecting a texture

[Crayox13]

Hi,
I have an underwater scene, and want the light to project a noise or a smoke map. So I had to delete the vraysun and go with standard rectangular vraylight. I put a texture in it, and I can't get it to project. Not sure if it's too blurry or something but I tried all mapings (explicit, object, world...) all sizes of the maps, and even changed the size of my light rectangle. Any ideas?

It always looks as if it's totally blurred. I need that waves effect you get on the ocean floor from the sun. I don't want to use caustics.

[Dariusz Makowski (Dadal)]

U want the causitc...

Get Standard Directional light
Project map
Smoke map < Adjust settings and u done.

[jacksc02]

use a standard spotlight with a projector map and set the shadow type to be shadowmap

[Crayox13]

Ok, I'll try. The scene is very specific since I'm faking it being under water, there's no water, so that's why I don't want to use caustics.

I guess vraylights aren't really made for projecting sharp maps.

Thanks guys

[vlado]

Hi,
I have an underwater scene, and want the light to project a noise or a smoke map. So I had to delete the vraysun and go with standard rectangular vraylight. I put a texture in it, and I can't get it to project. Not sure if it's too blurry or something but I tried all mapings (explicit, object, world...) all sizes of the maps, and even changed the size of my light rectangle. Any ideas?

It always looks as if it's totally blurred. I need that waves effect you get on the ocean floor from the sun. I don't want to use caustics.

By default the rectangle light emits diffusely in all directions; in V-Ray 2.0, you can set the directionality parameter to something close to 1.0 to get what you need; otherwise go with a standard direct/spot light.

Best regards,
Vlado

[nils_p]

....project a noise or a smoke map...

Ditch the noise or smoke map. Use this free tool:
http://www.dualheights.se/caustics/

[Dariusz Makowski (Dadal)]

Ditch the noise or smoke map. Use this free tool:
http://www.dualheights.se/caustics/

Coool, I guess we dont even need light now, just self illumination mask

[trixian]

"real" caustics are still occluded by other objects so lights projecting is still useful, but you can in some cases get away with a self illuminated shader yes.