Mapping a 128x32 image across 3x P3 panels (1/16 Scan) + Future Support?

[xxlenders18xx]

​Hi everyone,
​I am setting up a ZeDMD using the official ESP-ZEDMD-S3 SHIELD (ESP32 S3 N16R8).
​I have three P3 LED panels (64x32 pixels, model P3-6432-2121-16S-D1.0, chipset FM6124, 1/16 Scan). Since chaining three panels creates a total resolution of 192x32, I have a specific question about the mapping.
​Is it possible to use all three panels but only "activate" the pixels to form a standard 128x32 DMD area? My idea is to have the image centered like this:
​Panel 1: only the right 32 pixels (half panel).
​Panel 2: all 64 pixels (full panel).
​Panel 3: only the left 32 pixels (half panel).
​Does the current firmware allow for this kind of "virtual crop" or horizontal offset?
​Also, I’d like to ask if there are any plans to natively support a 3-panel configuration (192x32) in the future. These P3 panels are becoming quite popular for pinball builds, and having native support for this layout would be a great feature.
​
​Thank you for your help!

[PastorL69]

Hi,

Maybe I don't understand something, but why do you want to use three 64x32 panels if you are only going to make use of two 64x32 panels essentially. 128x32 = 64x32 + 64x32.

[xxlenders18xx]

I understand the confusion regarding the math, but the choice is based on the physical dimensions of my Bartop.

If I used only two panels (128x32), I would be left with too much empty space on the sides, which would look unfinished. My cabinet is sized perfectly to fit three panels edge-to-edge.

Ideally, I would love to use the full resolution of all three panels (192x32), but as far as I know, there isn't a standard configuration or easy software support for that layout yet. So, for now, I’m installing three for the perfect physical fit, even if I’m technically only utilizing two for the display logic.

[PastorL69]

Since I am not the maintainer I can't decide on this, but this seems like a too custom thing to just add into the main branch. On another note I see plenty of bartops with a regular 128x32 DMD, such as this one: https://www.youtube.com/shorts/vhqXADy-c9A

You can always however create a fork and adjust it to your liking, it's all open source.

[xxlenders18xx]

I understand. If you think this is too specific for the main branch, do you happen to know if there is a way to make all three panels fully active anyway?

Since I have the physical space for a 192x32 area, I’d love to know if there's an existing method or configuration to support three panels at full resolution. Unfortunately, I wouldn't know where to start to do this on my own, so any guidance or technical advice you could share would be greatly appreciated!