as you can see, in alpha channel there is WHITE bricks and BLACK lines between them.
What i wanted to do, is to color only black lines in orange glowing color, but it somehow colored whole texture.
I wanted bricks to stay gray and that lines to go orange. So i used LinearInterpolate, if input A = black, B=white, and alpha is controling them, as you can see, i adjusted my main texture sample alpha channel in alpha Lerp. So Black(A) can be colored Orange and White(B) stays the same. But that didnt happend…Ive been trying for hours but still cant get desired result.
Texture samples are from starter content:
T_Brick_Clay_Beveled_D
T_Wood_Pine_N
T_Ceramic_Time_N
Okay, okay…so there are many solutions to this…I think making bricks white in photoshop is a kinda easy solution, but is there a option where i can color only alpha channel in photoshop?
I think you just need to clamp alpha (adjust max to remove orange where it’s gray on heightmap) before lerp where you add orange or use if node instead.
You control your channel in the bottom right corner. («couche» mean channel)
Another quick solution could be to use the node «power» to boost the whiteness OR simply adjust the brightness curve inside the image (open the image and you will have a couple of option directly inside UE4).
