Fix #1877

Extensions/Sprite.cpp

@@ -423,7 +423,7 @@ bool TFT_eSprite::pushRotated(int16_t angle, uint32_t transp)
     if (_bpp == 4) tpcolor = _colorMap[transp & 0x0F];
     tpcolor = tpcolor>>8 | tpcolor<<8; // Working with swapped color bytes
   }
-    _tft->startWrite(); // Avoid transaction overhead for every tft pixel
+  _tft->startWrite(); // Avoid transaction overhead for every tft pixel
 
   // Scan destination bounding box and fetch transformed pixels from source Sprite
   for (int32_t y = min_y; y <= max_y; y++, yt++) {
@@ -441,7 +441,7 @@ bool TFT_eSprite::pushRotated(int16_t angle, uint32_t transp)
       int32_t yp = ys >> FP_SCALE;
       if (_bpp == 16) {rp = _img[xp + yp * _iwidth]; }
       else { rp = readPixel(xp, yp); rp = (uint16_t)(rp>>8 | rp<<8); }
-      if (tpcolor == rp) {
+      if (transp != 0x00FFFFFF && tpcolor == rp) {
         if (pixel_count) {
           // TFT window is already clipped, so this is faster than pushImage()
           _tft->setWindow(x - pixel_count, y, x - 1, y);
@@ -517,7 +517,7 @@ bool TFT_eSprite::pushRotated(TFT_eSprite *spr, int16_t angle, uint32_t transp)
       int32_t yp = ys >> FP_SCALE;
       if (_bpp == 16) rp = _img[xp + yp * _iwidth];
       else { rp = readPixel(xp, yp); rp = (uint16_t)(rp>>8 | rp<<8); }
-      if (tpcolor == rp) {
+      if (transp != 0x00FFFFFF && tpcolor == rp) {
         if (pixel_count) {
           spr->pushImage(x - pixel_count, y, pixel_count, 1, sline_buffer);
           pixel_count = 0;

library.json

 {
   "name": "TFT_eSPI",
-  "version": "2.4.70",
+  "version": "2.4.71",
   "keywords": "Arduino, tft, display, ttgo, LilyPi, WT32-SC01, ePaper, display, Pico, RP2040 Nano Connect, RP2040, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9481, ILI9486, ILI9488, ST7789, ST7796, RM68140, SSD1351, SSD1963, ILI9225, HX8357D, GC9A01, R61581",
   "description": "A TFT and ePaper SPI graphics library with optimisation for Raspberry Pi Pico, RP2040, ESP8266, ESP32 and STM32",
   "repository":

library.properties

 name=TFT_eSPI
-version=2.4.70
+version=2.4.71
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for RP2040, STM32, ESP8266 and ESP32