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spot light - project image

Posted: Thu Jun 23, 2022 5:39 am
by mnm
Hi, I try to project black and white image(PNG with alpha) but I get either a little light or no light at all. The RGB image works(PNG w alpha). Do I need edit the BW image somehow? I want to use it to mimic fake shadows from trees, etc.

Blender 2.93.9
Luxcore 2.6 (official)

Re: spot light - project image

Posted: Thu Jun 23, 2022 4:36 pm
by kintuX
Please, read and abide to rule written on top. It's there to help You. ;)
Anyways, here's an example.
SpotLight_PNGA.blend.jpg
PS.
To make "Gobo" light, exclude alpha and use white background.

Re: spot light - project image

Posted: Thu Jun 30, 2022 10:13 am
by mnm
I thought it was clear and recreating it is simple and I was in hurry, my bad ;) . It is important to me that you wrote I need to use image with white as background.
spotlight_BW.jpg
I was unable to open your blend file.
open_blend_file_issue.jpg
open_blend_file_issue.jpg (8.94 KiB) Viewed 72 times
Thanks and stay healthy!

The image with alpha doesn't work neither so what I wrote in 1st post is not true. But I guess that's that in Luxcore all images works on BW if I am not wrong.
spotlight_image_w_alpha.jpg

Re: spot light - project image

Posted: Thu Jun 30, 2022 10:31 am
by kintuX
File was made w/ B3D 3.3 alpha & BLuxcore 2.6.1 daily

Simply post yours...