From fc776eeb1646daf002f5b6d37f27d21c858e8d61 Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Fri, 14 Nov 2025 01:08:48 +0100
Subject: [PATCH] add comment to explain coordinate packing logic

---
 wled00/image_loader.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wled00/image_loader.cpp b/wled00/image_loader.cpp
index 34991210..b201996e 100644
--- a/wled00/image_loader.cpp
+++ b/wled00/image_loader.cpp
@@ -85,6 +85,7 @@ void drawPixelCallback2D(int16_t x, int16_t y, uint8_t red, uint8_t green, uint8
   // simple nearest-neighbor scaling
   int outY = (int)y * activeSeg->vHeight() / gifHeight;
   int outX = (int)x * activeSeg->vWidth()  / gifWidth;
+  // Pack coordinates uniquely: outY into upper 16 bits, outX into lower 16 bits
   if (((outY << 16) | outX) == lastCoordinate) return; // skip setting same coordinate again
   lastCoordinate = (outY << 16) | outX; // since input is a "scanline" this is sufficient to identify a "unique" coordinate
   // set multiple pixels if upscaling