From 13331e3de01caa21c28988a0253c1ba28d879c73 Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Fri, 31 Oct 2025 11:09:45 +0100
Subject: [PATCH] const WS2812FX::setPixelColorXY

small optimization for speed
---
 wled00/FX.h         | 8 ++++----
 wled00/FX_2Dfcn.cpp | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/wled00/FX.h b/wled00/FX.h
index 7559b09e..fedca84a 100644
--- a/wled00/FX.h
+++ b/wled00/FX.h
@@ -1095,12 +1095,12 @@ class WS2812FX {  // 96 bytes
 
     void
       setUpMatrix(),
-      setPixelColorXY_fast(int x, int y, uint32_t c),
-      setPixelColorXY(int x, int y, uint32_t c);
+      setPixelColorXY_fast(int x, int y, uint32_t c) const,
+      setPixelColorXY(int x, int y, uint32_t c) const;
 
     // outsmart the compiler :) by correctly overloading
-    inline void setPixelColorXY(int x, int y, byte r, byte g, byte b, byte w = 0) { setPixelColorXY(x, y, RGBW32(r,g,b,w)); } // automatically inline
-    inline void setPixelColorXY(int x, int y, CRGB c)                             { setPixelColorXY(x, y, RGBW32(c.r,c.g,c.b,0)); }
+    inline void setPixelColorXY(int x, int y, byte r, byte g, byte b, byte w = 0) const { setPixelColorXY(x, y, RGBW32(r,g,b,w)); } // automatically inline
+    inline void setPixelColorXY(int x, int y, CRGB c)                             const { setPixelColorXY(x, y, RGBW32(c.r,c.g,c.b,0)); }
 
     uint32_t
       getPixelColorXY(uint16_t, uint16_t)  const;
diff --git a/wled00/FX_2Dfcn.cpp b/wled00/FX_2Dfcn.cpp
index 247f166e..dd2b280a 100644
--- a/wled00/FX_2Dfcn.cpp
+++ b/wled00/FX_2Dfcn.cpp
@@ -195,7 +195,7 @@ void WS2812FX::setUpMatrix() {
 }
 
 // absolute matrix version of setPixelColor(), without error checking
-void IRAM_ATTR __attribute__((hot)) WS2812FX::setPixelColorXY_fast(int x, int y, uint32_t col) //WLEDMM: IRAM_ATTR conditionally
+void IRAM_ATTR __attribute__((hot)) WS2812FX::setPixelColorXY_fast(int x, int y, uint32_t col) const //WLEDMM: IRAM_ATTR conditionally
 {
   uint_fast16_t index = y * Segment::maxWidth + x;
   if (index < customMappingSize) index = customMappingTable[index];
@@ -204,7 +204,7 @@ void IRAM_ATTR __attribute__((hot)) WS2812FX::setPixelColorXY_fast(int x, int y,
 }
 
 // absolute matrix version of setPixelColor()
-void IRAM_ATTR_YN WS2812FX::setPixelColorXY(int x, int y, uint32_t col) //WLEDMM: IRAM_ATTR conditionally
+void IRAM_ATTR_YN WS2812FX::setPixelColorXY(int x, int y, uint32_t col) const //WLEDMM: IRAM_ATTR conditionally
 {
 #ifndef WLED_DISABLE_2D
   if (!isMatrix) return; // not a matrix set-up