ESP32P4 PPA nearest-neighbor scaling

ramblecube
Posts: 1
Joined: Sun Mar 02, 2025 10:00 am

ESP32P4 PPA nearest-neighbor scaling

Postby ramblecube » Mon Mar 03, 2025 8:18 am

Hello there,

Is nearest-neighbor (integer) scaling available with the PPA on ESP32P4?

I am currently using an integer scale factor of 4, but the scaled bitmap appears filtered/blurry.

Sprite
Espressif staff
Espressif staff
Posts: 10617
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32P4 PPA nearest-neighbor scaling

Postby Sprite » Wed Mar 05, 2025 2:42 am

Sorry, the PPA uses a fixed bilinear scaling algorithm. I agree that nearest-neighbour would give better results for some imagery; I'll ask the digital team if they can add it to the PPA in any future chips.

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