From 59ca792c9d7bc6b90f04ae640c6e2827ea826f15 Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Sat, 28 Sep 2024 02:45:16 +0200
Subject: [PATCH] HUB75: trade bit depth against memory needs

gradually reduce bitdepts on esp32
---
 wled00/bus_manager.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/wled00/bus_manager.cpp b/wled00/bus_manager.cpp
index 66a417e89f..cb3d8fac34 100644
--- a/wled00/bus_manager.cpp
+++ b/wled00/bus_manager.cpp
@@ -579,6 +579,14 @@ BusHub75Matrix::BusHub75Matrix(BusConfig &bc) : Bus(bc.type, bc.start, bc.autoWh
       break;
   }
 
+#if defined(CONFIG_IDF_TARGET_ESP32) || defined(CONFIG_IDF_TARGET_ESP32S2)// classic esp32, or esp32-s2: reduce bitdepth for large panels
+  if (mxconfig.mx_height >= 64) {
+    if (mxconfig.chain_length * mxconfig.mx_width > 192) mxconfig.setPixelColorDepthBits(3);
+    else if (mxconfig.chain_length * mxconfig.mx_width > 64)  mxconfig.setPixelColorDepthBits(4);
+    else mxconfig.setPixelColorDepthBits(8);
+  } else mxconfig.setPixelColorDepthBits(8);
+#endif
+
 #if defined(ARDUINO_ADAFRUIT_MATRIXPORTAL_ESP32S3) // MatrixPortal ESP32-S3
 
   // https://www.adafruit.com/product/5778