Draw only received shadow.

[lordubik]

Hi all,
sorry for make double post, but we don’t found a solution

Render only shadow

Hi, we have draw a shadow for a sprite with URP and cast it in a mesh 3d. Is it possible draw only the shadow and remove the object 3d from scene? because our background is a sprite 2d. Thanks a lot for help! Stefano [7556494--934450--Schermata 2021-10-08 alle 09.58.19.png]

is there a way with shader-graph make something for draw only the received shadow? every shadows received.

Thanks a lot for help!

Stefano

[Sinterklaas]

Reading the amount of shadow that a pixel receives can be done with a custom function node. The following link describes how to do custom lighting in Shader Graph using a custom function, which should point you in the right direction: Custom lighting in Shader Graph: Expanding your graphs in 2019

[lordubik]

but my trouble is don’t draw the mesh that received the shadow… is it possible?

[lordubik]

@lordubik

but my trouble is don’t draw the mesh that received the shadow… is it possible?

anybody have an idea? Thanks!

[Sinterklaas]

@lordubik

but my trouble is don’t draw the mesh that received the shadow… is it possible?

Well once you have the amount of shadow attenuation of a pixel, you could for example put that value through a One Minus node, and then put the result in the fragment node’s alpha input. This would make all pixels of a mesh transparent, except for the ones that are shadowed.