# Specular highlight of point light cannot be occluded **URL:** \ **Category:** Rendering\ **Tags:** point-light, unreal-engine, specular, lighting-problem\ **Created:** [November 5, 2024, 8:51pm UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718 "2024-11-05T20:51:16Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![hollov](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hollov](https://forums.unrealengine.com/u/hollov)\ **Post date:** [November 5, 2024, 8:51pm UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/1 "2024-11-05T20:51:16Z")
If I set both “Source Radius” and “Source Length” of a point light, then its specular highlight cannot be occluded as shown on the GIF below. Is this a known issue? Is there a workaround? (GI and Reflection have been turned off with PPV so I can exclude them from the equation) UPDATE: using EnrealEngine 5.4.4 ![NVIDIA_Share_noMoYQFobW](https://d3kjluh73b9h9o.cloudfront.net/original/4X/4/c/8/4c8de295196471f7467cc073bcb9c5975ed435a2.gif) ---
**Author:** ![comlys](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/comlys/32/998665_2.png) [@comlys](https://forums.unrealengine.com/u/comlys)\ **Post date:** [November 5, 2024, 11:31pm UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/2 "2024-11-05T23:31:04Z")
I was not able to repro this. What type of shadows are you using? ---
**Author:** ![hollov](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hollov](https://forums.unrealengine.com/u/hollov)\ **Post date:** [November 6, 2024, 8:55am UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/3 "2024-11-06T08:55:53Z")
Hi Shaun, Thanks for the prompt reply. - Shadow map method: Virtual Shadow maps - Ray Traced Shadows: ON - Engine Scalability Settings: Cinematic I’ve setup the project to use Lumen with HW raytracing; tried to max out everything since I want to create cinematic, so FPS is low prio. If you need any other setting just alert me. I appreciate you taking your time investigating this. PS: in the meantime I’m installing 5.5 preview to see if the issue is still there ---
**Author:** ![hollov](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hollov](https://forums.unrealengine.com/u/hollov)\ **Post date:** [November 6, 2024, 9:09am UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/4 "2024-11-06T09:09:33Z")
Aaaaaand the results are in: in UE 5.5 Preview the issue seemed to be resolved! Oh I didn’t mentioned in the first post that I use v5.4.4 (I’ll update the orig post as well) ---
**Author:** ![hollov](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hollov](https://forums.unrealengine.com/u/hollov)\ **Post date:** [November 6, 2024, 9:23am UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/5 "2024-11-06T09:23:18Z")
Turning Megalights ON in 5.5 brings back the issue. Interesting 🤔 ![NVIDIA_Share_ZsIipaJHoV](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/3/e/e3ee0195c52755f553e3f3d78186cdc98f157dcd.gif) ---
**Author:** ![comlys](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/comlys/32/998665_2.png) [@comlys](https://forums.unrealengine.com/u/comlys)\ **Post date:** [November 6, 2024, 7:01pm UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/6 "2024-11-06T19:01:08Z")
Thats fixed in our dev branch. I would not use ManyLight for anything other than messing around. There is some work to be done still. ---
**Author:** ![hollov](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hollov](https://forums.unrealengine.com/u/hollov)\ **Post date:** [November 6, 2024, 9:15pm UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/7 "2024-11-06T21:15:02Z")
I’m only doing a personal project right now. I’m all up for experimenting with new stuff 😉 But could you reproduce the issue in 5.4.4? I’d still like to fall back to that version if anything goes wrong with the preview one. ---
**Author:** ![comlys](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/comlys/32/998665_2.png) [@comlys](https://forums.unrealengine.com/u/comlys)\ **Post date:** [November 6, 2024, 9:37pm UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/8 "2024-11-06T21:37:20Z")
I can. You’re likely bumping into the light source shape intersecting the plane. ---
**Author:** ![hollov](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hollov](https://forums.unrealengine.com/u/hollov)\ **Post date:** [November 7, 2024, 9:14am UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/9 "2024-11-07T09:14:27Z")
Unfortunately it’s not the case; there’s almost 1m between the two. And you can see that the shadow is correct. Meaning the light itself doesn’t goes through the plane; only the specular highlight stays there. The fact that setting the lights “Specular Scale” to 0 makes that highlight disappear proves that as well. ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/c/7/dc72dccd78bcf08e502fdf41936504f958ccaf54.png) ---
**Author:** ![comlys](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/comlys/32/998665_2.png) [@comlys](https://forums.unrealengine.com/u/comlys)\ **Post date:** [November 8, 2024, 1:25am UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/10 "2024-11-08T01:25:59Z")
Ahh I see. I’ll ask the engineers to have a closer look. ---
**Author:** ![hollov](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hollov](https://forums.unrealengine.com/u/hollov)\ **Post date:** [November 8, 2024, 9:26am UTC](https://forums.unrealengine.com/t/specular-highlight-of-point-light-cannot-be-occluded/2106718/11 "2024-11-08T09:26:05Z")
Thanks, much appreciated! In the meantime I guess I’ll just replace the point light with 2 rect light positioned back to back.