Bugs in bloom effect in spherical rendering.

jiv21

User Posts: 31
Aug 27, 2025 22:44

Hi Kirgman.

Reporting an error when using Bloom in spherical rendering. If an object that produces bloom and glow is located in the render's cutoff area (the edges), the bloom is only rendered on the side that is the center of the object producing the bloom. On the other side, it doesn't.

I'm sending you a sample image (with a slight bloom, but you can see what I'm reporting) because in this specific case, it not only reproduces the error mentioned, but also produces artifacts in the cutoff area. Something that doesn't happen when bloom isn't used.

Regards.

I'm attaching a link to image 360 due to forum upload size limitations. The image is 6.82 MB.

Link to 360 viewer
Link to 360 8K image

Edited: jiv21 - Aug 29, 2025 14:21

Kirgman

Administrator Posts: 965
Aug 28, 2025 15:44

Hi Jiv,
Thanks for sharing a very nice image, I really like it! I think it took a lot of effort to work with it.
Do you mean the bloom artifact such as this? So here we have the light bulb and bloom effect to the top right side, but not on the others. Is this a thing you are concerned?

Attached Files

bloom test.jpg (38.09 Kb)

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jiv21

User Posts: 31
Aug 28, 2025 21:59

Hello again, Kirgman.

Thanks for your comment.

To clearly see the error, you have to view it in the 360° viewer. You can see when one edge of the image contrasts with the other. Otherwise, it's very difficult to see.

You can see how the blob is created in the center of the object, but for some reason it doesn't transfer to the other edge of the image.

The smaller image (the one with the spotlights) makes the problem clearer.

Here are some examples:

Attached Files

Captura de pantalla 2025-08-29 035605.jpg (299.09 Kb)

Captura de pantalla 2025-08-29 035530.jpg (318.17 Kb)

Captura de pantalla 2025-08-29 035430.jpg (305.86 Kb)

Captura de pantalla 2025-08-29 040512.jpg (148.52 Kb)

Edited: jiv21 - Aug 28, 2025 22:06

Kirgman

Administrator Posts: 965
Aug 29, 2025 05:02

Oh, I see, it's a very good catch! So when we stitch left and right side together in 360 viewer then we can observe this thing. It happens because the left and right side don't collaborate when we compute the bloom. Need to look there in more detail.
Thanks a lot for this bugrep!

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jiv21 User Posts: 31 Aug 29, 2025 07:38 #5 Thanks to you.

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