1
$\begingroup$

Creating Sun Rays is always a struggle. Today, I am trying to create rays coming from below around silhouettes produced with transparent PNGs - reusing several tips I found on here.

And it seems that the rays are going down rather than up...

enter image description here

In this setup, the light comes from an emission plane, above which are silhouettes.

enter image description here

The World Compositing setup.

enter image description here

The Volumetric environment.

enter image description here

Unfortunately, when I render the rays seem to come from above and mask part of the silhouettes! On this render, it is obvious that the emission is way below the silhouettes.

How do I make the rays come from the Emission object?

| improve this question | |
$\endgroup$
2
$\begingroup$

Sun beams node works with normalized screen space coordinates, where (X0.5; Y0.5) is the Camera's midpoint.

enter image description here

Your current point (X0.7; Y1.1) is way out of the screen. Try something like (X0.5; Y0.25) - it will be lower part of the screen, where is light coming from.

| improve this answer | |
$\endgroup$
  • $\begingroup$ Thanks, but how do I do that? In a panel, menu...? $\endgroup$ – MicroMachine Feb 7 '19 at 0:22
  • 1
    $\begingroup$ "Sun beams node" is in your Compositor setup: left value is X coordinate, another one is Y $\endgroup$ – Serge L Feb 7 '19 at 0:23
  • 1
    $\begingroup$ Oh - gotcha. Weird that these values don't have a name/label. Thanks $\endgroup$ – MicroMachine Feb 7 '19 at 0:24
  • 2
    $\begingroup$ If you hover mouse cursor on these values, you'll get a tooltip "...bla, bla image width&height", but I agree about proper XY labels $\endgroup$ – Serge L Feb 7 '19 at 0:29

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.