Greetings, I’m trying to use volumetric fog, but when I add a light (any, spot or sunlight) objects are not affecting shadows on the fog: [LightVolumetrics] As you can see, the cube (goes all the way back through the entire cone of the light) does cast shadow on the ground, but the volumetric fog…

are you using a cube or a box brush? [image]

I’m using basic cube mesh, however my issue is not that there isn’t any shadow projected on the ground, there is, the issue is that the volumetric fog is being lit under the box, even though it shouldn’t be. You can see in the screenshot that the cone of light is coming straight through it, instead …

I don’t think we understand each other, so here is a better example: I have a solid wall with spotlight shining directly at it: [LightVolumetrics1] However, on the other side of the wall, light keeps being projected, illuminating the fog as if the wall wasn’t there: [LightVolumetrics2]

Sorry perhaps I don’t understand you, and is late for me, then what is wrong with my picture: [image] Rays are not going to stop of course, unless you block the whole light to the observer… Like under the cube… [image] When I doubt I look for real images with a similar scene, hope it helps you…

Your light is already hitting the edge of the cube, so the issue is barely visible: [image] The fog inside the blue rectangle shouldn’t be illuminated, because it’s in the shadow of the cube. Try to recreate my second example, one spotlight, one wall mesh, exponential height fog → volumetric fog…

Okay, I finally figured it out, for anyone who comes after us, light has to be set to movable and not casting ray traced shadows.

[image] Betaraptor01: Okay, I finally figured it out, for anyone who comes after us, light has to be set to movable and not casting ray traced shadows. ok also it can happens because using Raytracing because… [image] [image] And take a look in the light to the Volumetric Inscatering Inten…

I was having the same problem i think, but i figured out [image] Have a look at cast volume shadow and you need to have scattering too the result was this… [image]

I’m experiencing extremely inconsistent volumetric fog shadows in ue5.5. Sometimes it works, some times it doesn’t work. For example if you untick Inverse Squared Falloff and then tick it again, everything can break. Sometimes i have the perfect godrays and then i open up the project again and they …

No shadows on volumetric fog

Development Rendering

alberto (alberto) June 6, 2022, 11:59pm 9