feat(draw/sw): add support for LV_COLOR_FORMAT_I1 (#6345)

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

Kconfig

@@ -239,6 +239,11 @@ menu "LVGL configuration"
 			default y
 			depends on LV_USE_DRAW_SW
 
+		config LV_DRAW_SW_SUPPORT_I1
+			bool "Enable support for I1 color format"
+			default y
+			depends on LV_USE_DRAW_SW
+				
 		config LV_DRAW_SW_DRAW_UNIT_CNT
 			int "Number of draw units"
 			default 1

demos/render/assets/img_render_lvgl_logo_i1.c

@@ -0,0 +1,73 @@
+#ifdef __has_include
+    #if __has_include("lvgl.h")
+        #ifndef LV_LVGL_H_INCLUDE_SIMPLE
+            #define LV_LVGL_H_INCLUDE_SIMPLE
+        #endif
+    #endif
+#endif
+
+#if defined(LV_LVGL_H_INCLUDE_SIMPLE)
+    #include "lvgl.h"
+#else
+    #include "lvgl/lvgl.h"
+#endif
+
+
+#ifndef LV_ATTRIBUTE_MEM_ALIGN
+#define LV_ATTRIBUTE_MEM_ALIGN
+#endif
+
+#ifndef LV_ATTRIBUTE_IMG_RENDER_LVGL_LOGO_I1
+#define LV_ATTRIBUTE_IMG_RENDER_LVGL_LOGO_I1
+#endif
+
+static const
+LV_ATTRIBUTE_MEM_ALIGN LV_ATTRIBUTE_LARGE_CONST LV_ATTRIBUTE_IMG_RENDER_LVGL_LOGO_I1
+uint8_t img_render_lvgl_logo_i1_map[] = {
+
+    0x00,0x00,0x00,0xff,0xff,0xff,0xff,0xff,
+
+    0x20,0x00,0x00,0x18,
+    0xc0,0x00,0x00,0x04,
+    0x80,0x00,0x00,0x00,
+    0x00,0x00,0x00,0x70,
+    0x00,0x00,0x00,0xf0,
+    0x00,0x00,0x00,0x60,
+    0x00,0x00,0x00,0x00,
+    0x00,0x00,0x00,0x00,
+    0x00,0x00,0x00,0x00,
+    0xff,0x80,0x00,0x00,
+    0xff,0xc0,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0x80,0x60,0x00,0x00,
+    0xff,0xe0,0x00,0x00,
+    0x7f,0x9f,0xf0,0x00,
+    0x80,0x60,0x18,0x00,
+    0x80,0x60,0x18,0x00,
+    0x80,0x60,0x18,0x00,
+    0x80,0x60,0x18,0x00,
+    0x80,0x60,0x18,0x00,
+    0x80,0x60,0x18,0x00,
+    0x80,0x60,0x18,0x00,
+    0x80,0x60,0x18,0x04,
+    0x40,0x00,0x18,0x0c,
+
+};
+
+const lv_image_dsc_t img_render_lvgl_logo_i1 = {
+  .header.magic = LV_IMAGE_HEADER_MAGIC,
+  .header.cf = LV_COLOR_FORMAT_I1,
+  .header.flags = 0,
+  .header.w = 30,
+  .header.h = 30,
+  .header.stride = 4,
+  .data_size = sizeof(img_render_lvgl_logo_i1_map),
+  .data = img_render_lvgl_logo_i1_map,
+};
+

demos/render/assets/img_render_lvgl_logo_l8.c

@@ -14,54 +14,58 @@
 
 
 #ifndef LV_ATTRIBUTE_MEM_ALIGN
-    #define LV_ATTRIBUTE_MEM_ALIGN
+#define LV_ATTRIBUTE_MEM_ALIGN
 #endif
 
-#ifndef LV_ATTRIBUTE_IMG_IMG_RENDER_LVGL_LOGO_L8
-    #define LV_ATTRIBUTE_IMG_IMG_RENDER_LVGL_LOGO_L8
+#ifndef LV_ATTRIBUTE_IMG_RENDER_LVGL_LOGO_L8
+#define LV_ATTRIBUTE_IMG_RENDER_LVGL_LOGO_L8
 #endif
 
-const LV_ATTRIBUTE_MEM_ALIGN LV_ATTRIBUTE_LARGE_CONST LV_ATTRIBUTE_IMG_IMG_RENDER_LVGL_LOGO_L8 uint8_t
-img_render_lvgl_logo_l8_map[] = {
-    /*Pixel format: Grayscale 8 bit*/
-    0xfd,0xfd,0xdf,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xcb,0xed,0xfd,0xfd,
-    0xfd,0xa8,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x22,0xcf,0xfd,
-    0xdf,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x46,0xfc,
-    0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x3f,0xbf,0xb1,0x1d,0x1d,0x1d,0xe7,
-    0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xb9,0xfd,0xfd,0x8d,0x1d,0x1d,0xe6,
-    0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x97,0xfd,0xfa,0x67,0x1d,0x1d,0xe6,
-    0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x72,0x64,0x1d,0x1d,0x1d,0xe6,
-    0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xe0,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xfd,0xf1,0xe6,0xe6,0xe6,0xe6,0xe6,0xe6,0xe6,0xe1,0x7c,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xfa,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xdb,0xfd,0xc7,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xed,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd7,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xf2,0xdd,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xfd,0xe9,0xe9,0xe9,0xe9,0xe9,0xe9,0xe9,0xf1,0xfd,0xfd,0xf0,0xe6,0xe6,0xe6,0xe6,0xe6,0xe6,0xe6,0xde,0x78,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xfa,0xd5,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xdd,0xfd,0xfa,0xd5,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xdd,0xfd,0xc7,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xee,0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xee,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xe6,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xea,
-    0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xd2,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xe9,0xcb,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x64,0xfd,
-    0xd7,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xf2,0xd7,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0x6a,0xf2,0xdc,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x56,0xe1,0xfd,
-    0xfd,0xe9,0xe9,0xe9,0xe9,0xe9,0xe9,0xe9,0xee,0xfd,0xfd,0xe9,0xe9,0xe9,0xe9,0xe9,0xe9,0xe9,0xee,0xfd,0xfd,0xed,0xe6,0xe6,0xe6,0xe6,0xe6,0xfa,0xfd,0xfd,
+static const
+LV_ATTRIBUTE_MEM_ALIGN LV_ATTRIBUTE_LARGE_CONST LV_ATTRIBUTE_IMG_RENDER_LVGL_LOGO_L8
+uint8_t img_render_lvgl_logo_l8_map[] = {
+
+    0x00,0x00,0x40,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x47,0x48,0x47,0x47,0x47,0x46,0x47,0x20,0x00,
+    0x02,0x4b,0x2f,0x32,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x33,0x2c,0x2a,0x2e,0x3e,0x29,
+    0x40,0x2f,0x35,0x36,0x35,0x36,0x36,0x37,0x36,0x35,0x36,0x36,0x35,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x35,0x31,0x5e,0x69,0x35,0x2a,0x45,
+    0x47,0x32,0x36,0x35,0x36,0x36,0x35,0x36,0x35,0x36,0x36,0x35,0x36,0x35,0x36,0x35,0x37,0x36,0x36,0x36,0x36,0x35,0x37,0x2d,0x7a,0xfb,0xfd,0x9c,0x2c,0x38,
+    0x47,0x33,0x35,0x36,0x35,0x36,0x36,0x36,0x36,0x35,0x37,0x36,0x36,0x36,0x36,0x36,0x36,0x35,0x36,0x35,0x36,0x36,0x37,0x29,0xb1,0xfd,0xfd,0xd8,0x2f,0x39,
+    0x47,0x33,0x36,0x36,0x36,0x36,0x36,0x35,0x36,0x36,0x36,0x36,0x36,0x35,0x35,0x35,0x37,0x35,0x36,0x36,0x36,0x36,0x37,0x2f,0x60,0xe7,0xf1,0x7f,0x2d,0x39,
+    0x47,0x33,0x36,0x36,0x36,0x36,0x36,0x35,0x36,0x36,0x35,0x36,0x36,0x36,0x35,0x35,0x36,0x36,0x36,0x37,0x36,0x36,0x36,0x36,0x30,0x43,0x49,0x2f,0x35,0x39,
+    0x46,0x33,0x36,0x36,0x36,0x36,0x35,0x36,0x36,0x36,0x35,0x36,0x36,0x35,0x36,0x36,0x37,0x36,0x36,0x35,0x36,0x36,0x35,0x36,0x36,0x32,0x31,0x35,0x35,0x39,
+    0x49,0x27,0x29,0x2a,0x29,0x2a,0x2a,0x29,0x29,0x2f,0x37,0x36,0x36,0x36,0x35,0x36,0x36,0x36,0x35,0x37,0x35,0x35,0x37,0x36,0x36,0x37,0x35,0x36,0x35,0x39,
+    0x17,0x41,0x45,0x45,0x45,0x45,0x45,0x44,0x45,0x47,0x2e,0x36,0x35,0x37,0x36,0x36,0x36,0x35,0x36,0x36,0x36,0x36,0x35,0x36,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x05,0x35,0x3c,0x3a,0x3a,0x3a,0x3a,0x3d,0x33,0x07,0x49,0x2e,0x36,0x36,0x36,0x36,0x37,0x36,0x36,0x35,0x36,0x36,0x35,0x35,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x67,0x71,0x72,0x71,0x71,0x71,0x72,0x72,0x6c,0x48,0x32,0x2b,0x36,0x36,0x36,0x35,0x35,0x36,0x36,0x37,0x35,0x36,0x36,0x36,0x36,0x36,0x35,0x35,0x35,0x39,
+    0x72,0x77,0x79,0x79,0x79,0x79,0x79,0x79,0x6f,0x5a,0x30,0x2b,0x35,0x37,0x36,0x36,0x36,0x36,0x36,0x35,0x36,0x36,0x35,0x36,0x35,0x36,0x36,0x36,0x35,0x39,
+    0x72,0x77,0x79,0x79,0x78,0x79,0x79,0x79,0x70,0x59,0x31,0x2c,0x36,0x37,0x35,0x36,0x36,0x36,0x36,0x35,0x35,0x36,0x35,0x36,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x72,0x77,0x79,0x79,0x79,0x79,0x79,0x79,0x70,0x59,0x31,0x2c,0x35,0x36,0x36,0x36,0x37,0x35,0x36,0x36,0x36,0x36,0x35,0x35,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x72,0x77,0x79,0x79,0x79,0x79,0x79,0x79,0x70,0x59,0x31,0x2b,0x36,0x36,0x35,0x36,0x36,0x36,0x35,0x36,0x36,0x36,0x37,0x36,0x36,0x36,0x35,0x36,0x35,0x39,
+    0x72,0x77,0x79,0x79,0x79,0x79,0x78,0x79,0x70,0x59,0x31,0x2c,0x36,0x36,0x36,0x35,0x35,0x36,0x35,0x37,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x71,0x77,0x79,0x79,0x78,0x79,0x79,0x79,0x70,0x59,0x32,0x2b,0x36,0x36,0x35,0x36,0x35,0x36,0x36,0x37,0x36,0x36,0x35,0x36,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x72,0x71,0x74,0x74,0x74,0x73,0x74,0x74,0x6b,0x5a,0x31,0x23,0x2f,0x2e,0x2f,0x2f,0x2f,0x2d,0x2e,0x32,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x41,0x70,0x72,0x72,0x72,0x72,0x72,0x72,0x6f,0x29,0x0e,0x49,0x46,0x47,0x48,0x48,0x48,0x48,0x48,0x3f,0x2e,0x36,0x35,0x35,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x00,0x07,0x11,0x10,0x10,0x10,0x10,0x11,0x07,0x00,0x00,0x01,0x13,0x11,0x11,0x11,0x11,0x11,0x0e,0x0b,0x4b,0x2e,0x36,0x36,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x51,0x9d,0xa4,0xa4,0xa4,0xa4,0xa4,0xa4,0x9b,0x2e,0x1a,0x62,0x65,0x65,0x65,0x65,0x65,0x65,0x60,0x52,0x15,0x36,0x34,0x36,0x36,0x36,0x35,0x36,0x35,0x39,
+    0x91,0xaf,0xb1,0xb1,0xb1,0xb1,0xb1,0xb1,0xac,0x60,0x35,0x59,0x63,0x63,0x63,0x63,0x63,0x63,0x5d,0x65,0x0d,0x3d,0x32,0x36,0x35,0x36,0x36,0x36,0x35,0x39,
+    0x8f,0xb1,0xb3,0xb3,0xb3,0xb3,0xb3,0xb3,0xae,0x5b,0x32,0x5e,0x65,0x65,0x65,0x65,0x65,0x65,0x60,0x65,0x11,0x3f,0x31,0x35,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x8d,0xb1,0xb3,0xb3,0xb3,0xb3,0xb3,0xb3,0xad,0x5c,0x32,0x5e,0x65,0x65,0x65,0x65,0x65,0x65,0x60,0x65,0x11,0x3f,0x32,0x36,0x35,0x36,0x36,0x36,0x35,0x39,
+    0x8f,0xb1,0xb3,0xb3,0xb3,0xb3,0xb3,0xb3,0xae,0x5c,0x32,0x5e,0x65,0x65,0x65,0x65,0x65,0x65,0x60,0x65,0x11,0x3f,0x32,0x35,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x8f,0xb1,0xb3,0xb3,0xb3,0xb3,0xb3,0xb3,0xad,0x5b,0x32,0x5e,0x65,0x65,0x65,0x65,0x65,0x65,0x60,0x65,0x11,0x3f,0x32,0x35,0x36,0x36,0x36,0x36,0x35,0x39,
+    0x6e,0xb0,0xb3,0xb3,0xb3,0xb3,0xb3,0xb3,0xae,0x5c,0x32,0x5e,0x65,0x65,0x65,0x65,0x65,0x65,0x5f,0x65,0x11,0x3f,0x32,0x36,0x36,0x36,0x36,0x36,0x33,0x3d,
+    0x1b,0x9c,0xaf,0xb1,0xb1,0xb1,0xb1,0xb1,0xad,0x5e,0x35,0x5b,0x65,0x65,0x65,0x65,0x65,0x65,0x5e,0x65,0x11,0x3a,0x31,0x35,0x35,0x35,0x35,0x33,0x26,0x48,
+    0x00,0x26,0x8a,0xa7,0xac,0xab,0xab,0xac,0xa3,0x35,0x1c,0x62,0x65,0x65,0x65,0x65,0x65,0x65,0x5e,0x58,0x03,0x49,0x33,0x39,0x39,0x3a,0x38,0x3d,0x49,0x02,
 
 };
 
 const lv_image_dsc_t img_render_lvgl_logo_l8 = {
+  .header.magic = LV_IMAGE_HEADER_MAGIC,
   .header.cf = LV_COLOR_FORMAT_L8,
+  .header.flags = 0,
   .header.w = 30,
   .header.h = 30,
-  .data = img_render_lvgl_logo_l8_map,
+  .header.stride = 30,
   .data_size = sizeof(img_render_lvgl_logo_l8_map),
+  .data = img_render_lvgl_logo_l8_map,
 };
 

demos/render/lv_demo_render.c

@@ -336,6 +336,7 @@ static void image_core_cb(lv_obj_t * parent, bool recolor, uint32_t startAt)
     LV_IMAGE_DECLARE(img_render_lvgl_logo_rgb565);
     LV_IMAGE_DECLARE(img_render_lvgl_logo_argb8888);
     LV_IMAGE_DECLARE(img_render_lvgl_logo_l8);
+    LV_IMAGE_DECLARE(img_render_lvgl_logo_i1);
 
     const void * srcs[] = {
         &img_render_lvgl_logo_argb8888,
@@ -343,6 +344,7 @@ static void image_core_cb(lv_obj_t * parent, bool recolor, uint32_t startAt)
         &img_render_lvgl_logo_rgb888,
         &img_render_lvgl_logo_rgb565,
         &img_render_lvgl_logo_l8,
+        &img_render_lvgl_logo_i1,
     };
 
     const void * names[] = {
@@ -351,6 +353,7 @@ static void image_core_cb(lv_obj_t * parent, bool recolor, uint32_t startAt)
         "RGB\n888",
         "RGB\n565",
         "L8",
+        "I1",
     };
 
     uint32_t stopAt = startAt + LV_MIN(sizeof(srcs) / sizeof(void *) - startAt, 4);

docs/porting/display.rst

@@ -172,7 +172,8 @@ The default color format of the display is set according to :c:macro:`LV_COLOR_D
 - :c:macro:`LV_COLOR_DEPTH` ``32``: XRGB8888 (4 bytes/pixel)
 - :c:macro:`LV_COLOR_DEPTH` ``24``: RGB888 (3 bytes/pixel)
 - :c:macro:`LV_COLOR_DEPTH` ``16``: RGB565 (2 bytes/pixel)
-- :c:macro:`LV_COLOR_DEPTH` ``8``: L8 (1 bytes/pixel) Not supported yet
+- :c:macro:`LV_COLOR_DEPTH` ``8``: L8 (1 bytes/pixel)
+- :c:macro:`LV_COLOR_DEPTH` ``1``: I1 (1 bit/pixel) Only support for horizontal mapped buffers.
 
 The ``color_format`` can be changed with
 :cpp:expr:`lv_display_set_color_depth(display, LV_COLOR_FORMAT_...)`.

lv_conf_template.h

@@ -137,6 +137,7 @@
 	#define LV_DRAW_SW_SUPPORT_L8			1
 	#define LV_DRAW_SW_SUPPORT_AL88			1
 	#define LV_DRAW_SW_SUPPORT_A8			1
+	#define LV_DRAW_SW_SUPPORT_I1			1
 
 	/* Set the number of draw unit.
      * > 1 requires an operating system enabled in `LV_USE_OS`

src/draw/sw/blend/lv_draw_sw_blend.c

@@ -22,7 +22,9 @@
 #if LV_DRAW_SW_SUPPORT_RGB888
     #include "lv_draw_sw_blend_to_rgb888.h"
 #endif
-
+#if LV_DRAW_SW_SUPPORT_I1
+    #include "lv_draw_sw_blend_to_i1.h"
+#endif
 #if LV_USE_DRAW_SW
 
 /*********************
@@ -73,9 +75,11 @@ void lv_draw_sw_blend(lv_draw_unit_t * draw_unit, const lv_draw_sw_blend_dsc_t *
         else if(blend_dsc->mask_res == LV_DRAW_SW_MASK_RES_FULL_COVER) fill_dsc.mask_buf = NULL;
         else fill_dsc.mask_buf = blend_dsc->mask_buf;
 
+
+        fill_dsc.relative_area  = blend_area;
+        lv_area_move(&fill_dsc.relative_area, -layer->buf_area.x1, -layer->buf_area.y1);
         fill_dsc.dest_buf = lv_draw_layer_go_to_xy(layer, blend_area.x1 - layer->buf_area.x1,
                                                    blend_area.y1 - layer->buf_area.y1);
-
         if(fill_dsc.mask_buf) {
             fill_dsc.mask_stride = blend_dsc->mask_stride == 0  ? lv_area_get_width(blend_dsc->mask_area) : blend_dsc->mask_stride;
             fill_dsc.mask_buf += fill_dsc.mask_stride * (blend_area.y1 - blend_dsc->mask_area->y1) +
@@ -112,6 +116,11 @@ void lv_draw_sw_blend(lv_draw_unit_t * draw_unit, const lv_draw_sw_blend_dsc_t *
             case LV_COLOR_FORMAT_AL88:
                 lv_draw_sw_blend_color_to_al88(&fill_dsc);
                 break;
+#endif
+#if LV_DRAW_SW_SUPPORT_I1
+            case LV_COLOR_FORMAT_I1:
+                lv_draw_sw_blend_color_to_i1(&fill_dsc);
+                break;
 #endif
             default:
                 break;
@@ -139,11 +148,12 @@ void lv_draw_sw_blend(lv_draw_unit_t * draw_unit, const lv_draw_sw_blend_dsc_t *
         image_dsc.src_color_format = blend_dsc->src_color_format;
 
         const uint8_t * src_buf = blend_dsc->src_buf;
-        uint32_t src_px_size = lv_color_format_get_size(blend_dsc->src_color_format);
+        uint32_t src_px_size = lv_color_format_get_bpp(blend_dsc->src_color_format);
         src_buf += image_dsc.src_stride * (blend_area.y1 - blend_dsc->src_area->y1);
-        src_buf += (blend_area.x1 - blend_dsc->src_area->x1) * src_px_size;
+        src_buf += ((blend_area.x1 - blend_dsc->src_area->x1) * src_px_size) >> 3;
         image_dsc.src_buf = src_buf;
 
+
         if(blend_dsc->mask_buf == NULL) image_dsc.mask_buf = NULL;
         else if(blend_dsc->mask_res == LV_DRAW_SW_MASK_RES_FULL_COVER) image_dsc.mask_buf = NULL;
         else image_dsc.mask_buf = blend_dsc->mask_buf;
@@ -155,6 +165,12 @@ void lv_draw_sw_blend(lv_draw_unit_t * draw_unit, const lv_draw_sw_blend_dsc_t *
                                   (blend_area.x1 - blend_dsc->mask_area->x1);
         }
 
+        image_dsc.relative_area  = blend_area;
+        lv_area_move(&image_dsc.relative_area, -layer->buf_area.x1, -layer->buf_area.y1);
+
+        image_dsc.src_area  = *blend_dsc->src_area;
+        lv_area_move(&image_dsc.src_area, -layer->buf_area.x1, -layer->buf_area.y1);
+
         image_dsc.dest_buf = lv_draw_layer_go_to_xy(layer, blend_area.x1 - layer->buf_area.x1,
                                                     blend_area.y1 - layer->buf_area.y1);
 
@@ -189,6 +205,11 @@ void lv_draw_sw_blend(lv_draw_unit_t * draw_unit, const lv_draw_sw_blend_dsc_t *
             case LV_COLOR_FORMAT_AL88:
                 lv_draw_sw_blend_image_to_al88(&image_dsc);
                 break;
+#endif
+#if LV_DRAW_SW_SUPPORT_I1
+            case LV_COLOR_FORMAT_I1:
+                lv_draw_sw_blend_image_to_i1(&image_dsc);
+                break;
 #endif
             default:
                 break;

src/draw/sw/blend/lv_draw_sw_blend.h

@@ -53,6 +53,7 @@ typedef struct {
     int32_t mask_stride;
     lv_color_t color;
     lv_opa_t opa;
+    lv_area_t relative_area;
 } _lv_draw_sw_blend_fill_dsc_t;
 
 typedef struct {
@@ -67,6 +68,8 @@ typedef struct {
     lv_color_format_t src_color_format;
     lv_opa_t opa;
     lv_blend_mode_t blend_mode;
+    lv_area_t relative_area;    /**< The blend area relative to the layer's buffer area. */
+    lv_area_t src_area;             /**< The original src area. */
 } _lv_draw_sw_blend_image_dsc_t;
 
 /**********************

src/draw/sw/blend/lv_draw_sw_blend_to_al88.c

@@ -50,6 +50,12 @@ typedef struct {
     static void /* LV_ATTRIBUTE_FAST_MEM */ l8_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
 #endif
 
+#if LV_DRAW_SW_SUPPORT_I1
+    static void /* LV_ATTRIBUTE_FAST_MEM */ i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
+
+    static inline uint8_t /* LV_ATTRIBUTE_FAST_MEM */ get_bit(const uint8_t * buf, int32_t bit_idx);
+#endif
+
 static void /* LV_ATTRIBUTE_FAST_MEM */ al88_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
 
 #if LV_DRAW_SW_SUPPORT_RGB565
@@ -168,6 +174,22 @@ static inline void /* LV_ATTRIBUTE_FAST_MEM */ lv_color_16a_16a_mix(lv_color16a_
     #define LV_DRAW_SW_AL88_BLEND_NORMAL_TO_AL88_MIX_MASK_OPA(...)  LV_RESULT_INVALID
 #endif
 
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_WITH_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_WITH_OPA(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_WITH_MASK
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_WITH_MASK(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_MIX_MASK_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_MIX_MASK_OPA(...)  LV_RESULT_INVALID
+#endif
+
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
@@ -315,6 +337,11 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_al88(_lv_draw_sw_blend_imag
         case LV_COLOR_FORMAT_AL88:
             al88_image_blend(dsc);
             break;
+#if LV_DRAW_SW_SUPPORT_I1
+        case LV_COLOR_FORMAT_I1:
+            i1_image_blend(dsc);
+            break;
+#endif
         default:
             LV_LOG_WARN("Not supported source color format");
             break;
@@ -324,9 +351,100 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_al88(_lv_draw_sw_blend_imag
 /**********************
  *   STATIC FUNCTIONS
  **********************/
+#if LV_DRAW_SW_SUPPORT_I1
+static void LV_ATTRIBUTE_FAST_MEM i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
+{
+    int32_t w = dsc->dest_w;
+    int32_t h = dsc->dest_h;
+    lv_opa_t opa = dsc->opa;
+    lv_color16a_t * dest_buf_al88 = dsc->dest_buf;
+    int32_t dest_stride = dsc->dest_stride;
+    const uint8_t * src_buf_i1 = dsc->src_buf;
+    int32_t src_stride = dsc->src_stride;
+    const lv_opa_t * mask_buf = dsc->mask_buf;
+    int32_t mask_stride = dsc->mask_stride;
+
+    lv_color_mix_alpha_cache_t cache;
+    lv_color_mix_with_alpha_cache_init(&cache);
+
+    int32_t x, y;
+
+    if(dsc->blend_mode == LV_BLEND_MODE_NORMAL) {
+        if(mask_buf == NULL && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(x = 0; x < w; x++) {
+                        dest_buf_al88[x].lumi = get_bit(src_buf_i1, x) * 255;
+                        dest_buf_al88[x].alpha = 255;
+                    }
+                    dest_buf_al88 = drawbuf_next_row(dest_buf_al88, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf == NULL && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_WITH_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(x = 0; x < w; x++) {
+                        lv_color16a_t src_color;
+                        src_color.lumi = get_bit(src_buf_i1, x) * 255;
+                        src_color.alpha = opa;
+                        lv_color_16a_16a_mix(src_color, &dest_buf_al88[x], &cache);
+                    }
+                    dest_buf_al88 = drawbuf_next_row(dest_buf_al88, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_WITH_MASK(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(x = 0; x < w; x++) {
+                        lv_color16a_t src_color;
+                        src_color.lumi = get_bit(src_buf_i1, x) * 255;
+                        src_color.alpha = mask_buf[x];
+                        lv_color_16a_16a_mix(src_color, &dest_buf_al88[x], &cache);
+                    }
+                    dest_buf_al88 = drawbuf_next_row(dest_buf_al88, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+        else if(mask_buf && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_AL88_MIX_MASK_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(x = 0; x < w; x++) {
+                        lv_color16a_t src_color;
+                        src_color.lumi = get_bit(src_buf_i1, x) * 255;
+                        src_color.alpha = LV_OPA_MIX2(mask_buf[x], opa);
+                        lv_color_16a_16a_mix(src_color, &dest_buf_al88[x], &cache);
+                    }
+                    dest_buf_al88 = drawbuf_next_row(dest_buf_al88, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+        else {
+            for(y = 0; y < h; y++) {
+                for(x = 0; x < w; x++) {
+                    lv_color16a_t src_color;
+                    src_color.lumi = get_bit(src_buf_i1, x) * 255;
+                    if(mask_buf == NULL) src_color.alpha = opa;
+                    else src_color.alpha = LV_OPA_MIX2(mask_buf[x], opa);
+                    blend_non_normal_pixel(&dest_buf_al88[x], src_color, dsc->blend_mode, &cache);
+                }
+                if(mask_buf) mask_buf += mask_stride;
+                dest_buf_al88 = drawbuf_next_row(dest_buf_al88, dest_stride);
+                src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+            }
+        }
+    }
+}
+#endif
 
 #if LV_DRAW_SW_SUPPORT_L8
-
 static void LV_ATTRIBUTE_FAST_MEM l8_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
 {
     int32_t w = dsc->dest_w;
@@ -877,6 +995,15 @@ void lv_color_mix_with_alpha_cache_init(lv_color_mix_alpha_cache_t * cache)
     cache->ratio_saved = 255;
 }
 
+#if LV_DRAW_SW_SUPPORT_I1
+
+static inline uint8_t LV_ATTRIBUTE_FAST_MEM get_bit(const uint8_t * buf, int32_t bit_idx)
+{
+    return (buf[bit_idx / 8] >> (7 - (bit_idx % 8))) & 1;
+}
+
+#endif
+
 static inline void LV_ATTRIBUTE_FAST_MEM blend_non_normal_pixel(lv_color16a_t * dest, lv_color16a_t src,
                                                                 lv_blend_mode_t mode, lv_color_mix_alpha_cache_t * cache)
 {

src/draw/sw/blend/lv_draw_sw_blend_to_argb8888.c

@@ -50,6 +50,12 @@ typedef struct {
     static void /* LV_ATTRIBUTE_FAST_MEM */ al88_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
 #endif
 
+#if LV_DRAW_SW_SUPPORT_I1
+    static void /* LV_ATTRIBUTE_FAST_MEM */ i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
+
+    static inline uint8_t /* LV_ATTRIBUTE_FAST_MEM */ get_bit(const uint8_t * buf, int32_t bit_idx);
+#endif
+
 #if LV_DRAW_SW_SUPPORT_L8
     static void /* LV_ATTRIBUTE_FAST_MEM */ l8_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
 #endif
@@ -180,6 +186,22 @@ static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * b
     #define LV_DRAW_SW_ARGB8888_BLEND_NORMAL_TO_ARGB8888_MIX_MASK_OPA(...)  LV_RESULT_INVALID
 #endif
 
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_WITH_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_WITH_OPA(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_WITH_MASK
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_WITH_MASK(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_MIX_MASK_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_MIX_MASK_OPA(...)  LV_RESULT_INVALID
+#endif
+
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
@@ -323,6 +345,11 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_argb8888(_lv_draw_sw_blend_
         case LV_COLOR_FORMAT_AL88:
             al88_image_blend(dsc);
             break;
+#endif
+#if LV_DRAW_SW_SUPPORT_I1
+        case LV_COLOR_FORMAT_I1:
+            i1_image_blend(dsc);
+            break;
 #endif
         default:
             LV_LOG_WARN("Not supported source color format");
@@ -334,8 +361,100 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_argb8888(_lv_draw_sw_blend_
  *   STATIC FUNCTIONS
  **********************/
 
-#if LV_DRAW_SW_SUPPORT_AL88
+#if LV_DRAW_SW_SUPPORT_I1
+static void LV_ATTRIBUTE_FAST_MEM i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
+{
+    int32_t w = dsc->dest_w;
+    int32_t h = dsc->dest_h;
+    lv_opa_t opa = dsc->opa;
+    lv_color32_t * dest_buf_c32 = dsc->dest_buf;
+    int32_t dest_stride = dsc->dest_stride;
+    const uint8_t * src_buf_i1 = dsc->src_buf;
+    int32_t src_stride = dsc->src_stride;
+    const lv_opa_t * mask_buf = dsc->mask_buf;
+    int32_t mask_stride = dsc->mask_stride;
 
+    int32_t dest_x;
+    int32_t src_x;
+    int32_t y;
+
+    if(dsc->blend_mode == LV_BLEND_MODE_NORMAL) {
+        if(mask_buf == NULL && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        dest_buf_c32[dest_x].alpha = chan_val;
+                        dest_buf_c32[dest_x].red = chan_val;
+                        dest_buf_c32[dest_x].green = chan_val;
+                        dest_buf_c32[dest_x].blue = chan_val;
+                    }
+                    dest_buf_c32 = drawbuf_next_row(dest_buf_c32, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf == NULL && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_WITH_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_32_mix(chan_val, &dest_buf_c32[dest_x], opa);
+                    }
+                    dest_buf_c32 = drawbuf_next_row(dest_buf_c32, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_WITH_MASK(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_32_mix(chan_val, &dest_buf_c32[dest_x], mask_buf[src_x]);
+                    }
+                    dest_buf_c32 = drawbuf_next_row(dest_buf_c32, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+        else if(mask_buf && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_ARGB8888_MIX_MASK_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_32_mix(chan_val, &dest_buf_c32[dest_x], LV_OPA_MIX2(mask_buf[src_x], opa));
+                    }
+                    dest_buf_c32 = drawbuf_next_row(dest_buf_c32, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+    }
+    else {
+        lv_color32_t src_argb;
+        lv_color_mix_alpha_cache_t cache;
+        lv_color_mix_with_alpha_cache_init(&cache);
+        for(y = 0; y < h; y++) {
+            for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                src_argb.red = get_bit(src_buf_i1, src_x) * 255;
+                src_argb.green = src_argb.red;
+                src_argb.blue = src_argb.red;
+                if(mask_buf == NULL) src_argb.alpha = opa;
+                else src_argb.alpha = LV_OPA_MIX2(mask_buf[dest_x], opa);
+                blend_non_normal_pixel(&dest_buf_c32[dest_x], src_argb, dsc->blend_mode, &cache);
+            }
+            if(mask_buf) mask_buf += mask_stride;
+            dest_buf_c32 = drawbuf_next_row(dest_buf_c32, dest_stride);
+            src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+        }
+    }
+}
+#endif
+
+#if LV_DRAW_SW_SUPPORT_AL88
 static void LV_ATTRIBUTE_FAST_MEM al88_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
 {
     int32_t w = dsc->dest_w;
@@ -898,6 +1017,15 @@ void lv_color_mix_with_alpha_cache_init(lv_color_mix_alpha_cache_t * cache)
     cache->ratio_saved = 255;
 }
 
+#if LV_DRAW_SW_SUPPORT_I1
+
+static inline uint8_t LV_ATTRIBUTE_FAST_MEM get_bit(const uint8_t * buf, int32_t bit_idx)
+{
+    return (buf[bit_idx / 8] >> (7 - (bit_idx % 8))) & 1;
+}
+
+#endif
+
 static inline void LV_ATTRIBUTE_FAST_MEM blend_non_normal_pixel(lv_color32_t * dest, lv_color32_t src,
                                                                 lv_blend_mode_t mode, lv_color_mix_alpha_cache_t * cache)
 {

src/draw/sw/blend/lv_draw_sw_blend_to_i1.h

@@ -0,0 +1,45 @@
+/**
+ * @file lv_draw_sw_blend_i1.h
+ *
+ */
+
+#ifndef LV_DRAW_SW_BLEND_I1_H
+#define LV_DRAW_SW_BLEND_I1_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_draw_sw.h"
+#if LV_USE_DRAW_SW
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+void /* LV_ATTRIBUTE_FAST_MEM */ lv_draw_sw_blend_color_to_i1(_lv_draw_sw_blend_fill_dsc_t * dsc);
+
+void /* LV_ATTRIBUTE_FAST_MEM */ lv_draw_sw_blend_image_to_i1(_lv_draw_sw_blend_image_dsc_t * dsc);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif /*LV_USE_DRAW_SW*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_DRAW_SW_BLEND_I1_H*/

src/draw/sw/blend/lv_draw_sw_blend_to_l8.c

@@ -38,6 +38,12 @@
  *  STATIC PROTOTYPES
  **********************/
 
+#if LV_DRAW_SW_SUPPORT_I1
+    static void /* LV_ATTRIBUTE_FAST_MEM */ i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
+
+    static inline uint8_t /* LV_ATTRIBUTE_FAST_MEM */ get_bit(const uint8_t * buf, int32_t bit_idx);
+#endif
+
 static void /* LV_ATTRIBUTE_FAST_MEM */ l8_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
 
 #if LV_DRAW_SW_SUPPORT_AL88
@@ -152,6 +158,22 @@ static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * b
     #define LV_DRAW_SW_AL88_BLEND_NORMAL_TO_L8_MIX_MASK_OPA(...)  LV_RESULT_INVALID
 #endif
 
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_WITH_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_WITH_OPA(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_WITH_MASK
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_WITH_MASK(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_MIX_MASK_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_MIX_MASK_OPA(...)  LV_RESULT_INVALID
+#endif
+
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
@@ -288,6 +310,11 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_l8(_lv_draw_sw_blend_image_
         case LV_COLOR_FORMAT_AL88:
             al88_image_blend(dsc);
             break;
+#endif
+#if LV_DRAW_SW_SUPPORT_I1
+        case LV_COLOR_FORMAT_I1:
+            i1_image_blend(dsc);
+            break;
 #endif
         default:
             LV_LOG_WARN("Not supported source color format");
@@ -299,6 +326,94 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_l8(_lv_draw_sw_blend_image_
  *   STATIC FUNCTIONS
  **********************/
 
+#if LV_DRAW_SW_SUPPORT_I1
+static void LV_ATTRIBUTE_FAST_MEM i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
+{
+    int32_t w = dsc->dest_w;
+    int32_t h = dsc->dest_h;
+    lv_opa_t opa = dsc->opa;
+    uint8_t * dest_buf_l8 = dsc->dest_buf;
+    int32_t dest_stride = dsc->dest_stride;
+    const uint8_t * src_buf_i1 = dsc->src_buf;
+    int32_t src_stride = dsc->src_stride;
+    const lv_opa_t * mask_buf = dsc->mask_buf;
+    int32_t mask_stride = dsc->mask_stride;
+
+    int32_t dest_x;
+    int32_t src_x;
+    int32_t y;
+
+    if(dsc->blend_mode == LV_BLEND_MODE_NORMAL) {
+        if(mask_buf == NULL && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_8_mix(chan_val, &dest_buf_l8[dest_x], opa);
+                    }
+                    dest_buf_l8 = drawbuf_next_row(dest_buf_l8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf == NULL && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_WITH_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_8_mix(chan_val, &dest_buf_l8[dest_x], opa);
+                    }
+                    dest_buf_l8 = drawbuf_next_row(dest_buf_l8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_WITH_MASK(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_8_mix(chan_val, &dest_buf_l8[dest_x], mask_buf[src_x]);
+                    }
+                    dest_buf_l8 = drawbuf_next_row(dest_buf_l8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+        else if(mask_buf && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_L8_MIX_MASK_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_8_mix(chan_val, &dest_buf_l8[dest_x], LV_OPA_MIX2(mask_buf[src_x], opa));
+                    }
+                    dest_buf_l8 = drawbuf_next_row(dest_buf_l8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+    }
+    else {
+        lv_color32_t src_argb;
+        for(y = 0; y < h; y++) {
+            for(dest_x = 0, src_x = 0; src_x < w; dest_x++, src_x++) {
+                src_argb.red = get_bit(src_buf_i1, src_x) * 255;
+                src_argb.green = src_argb.red;
+                src_argb.blue = src_argb.red;
+                if(mask_buf == NULL) src_argb.alpha = opa;
+                else src_argb.alpha = LV_OPA_MIX2(mask_buf[dest_x], opa);
+                blend_non_normal_pixel(&dest_buf_l8[dest_x], src_argb, dsc->blend_mode);
+            }
+            if(mask_buf) mask_buf += mask_stride;
+            dest_buf_l8 = drawbuf_next_row(dest_buf_l8, dest_stride);
+            src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+        }
+    }
+}
+#endif
+
 static void LV_ATTRIBUTE_FAST_MEM l8_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
 {
     int32_t w = dsc->dest_w;
@@ -741,6 +856,16 @@ static inline void LV_ATTRIBUTE_FAST_MEM lv_color_8_8_mix(const uint8_t src, uin
     }
 }
 
+
+#if LV_DRAW_SW_SUPPORT_I1
+
+static inline uint8_t LV_ATTRIBUTE_FAST_MEM get_bit(const uint8_t * buf, int32_t bit_idx)
+{
+    return (buf[bit_idx / 8] >> (7 - (bit_idx % 8))) & 1;
+}
+
+#endif
+
 static inline void LV_ATTRIBUTE_FAST_MEM blend_non_normal_pixel(uint8_t * dest, lv_color32_t src, lv_blend_mode_t mode)
 {
     uint8_t res;

src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c

@@ -42,6 +42,12 @@
     static void /* LV_ATTRIBUTE_FAST_MEM */ al88_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
 #endif
 
+#if LV_DRAW_SW_SUPPORT_I1
+    static void /* LV_ATTRIBUTE_FAST_MEM */ i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
+
+    static inline uint8_t /* LV_ATTRIBUTE_FAST_MEM */ get_bit(const uint8_t * buf, int32_t bit_idx);
+#endif
+
 #if LV_DRAW_SW_SUPPORT_L8
     static void /* LV_ATTRIBUTE_FAST_MEM */ l8_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc);
 #endif
@@ -169,6 +175,22 @@ static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * b
     #define LV_DRAW_SW_ARGB8888_BLEND_NORMAL_TO_RGB565_MIX_MASK_OPA(...)    LV_RESULT_INVALID
 #endif
 
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_WITH_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_WITH_OPA(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_WITH_MASK
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_WITH_MASK(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_MIX_MASK_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_MIX_MASK_OPA(...)  LV_RESULT_INVALID
+#endif
+
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
@@ -367,6 +389,11 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_rgb565(_lv_draw_sw_blend_im
         case LV_COLOR_FORMAT_AL88:
             al88_image_blend(dsc);
             break;
+#endif
+#if LV_DRAW_SW_SUPPORT_I1
+        case LV_COLOR_FORMAT_I1:
+            i1_image_blend(dsc);
+            break;
 #endif
         default:
             LV_LOG_WARN("Not supported source color format");
@@ -378,8 +405,124 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_rgb565(_lv_draw_sw_blend_im
  *   STATIC FUNCTIONS
  **********************/
 
-#if LV_DRAW_SW_SUPPORT_AL88
+#if LV_DRAW_SW_SUPPORT_I1
+static void LV_ATTRIBUTE_FAST_MEM i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
+{
+    int32_t w = dsc->dest_w;
+    int32_t h = dsc->dest_h;
+    lv_opa_t opa = dsc->opa;
+    uint16_t * dest_buf_u16 = dsc->dest_buf;
+    int32_t dest_stride = dsc->dest_stride;
+    const uint8_t * src_buf_i1 = dsc->src_buf;
+    int32_t src_stride = dsc->src_stride;
+    const lv_opa_t * mask_buf = dsc->mask_buf;
+    int32_t mask_stride = dsc->mask_stride;
 
+    int32_t dest_x;
+    int32_t src_x;
+    int32_t y;
+
+    if(dsc->blend_mode == LV_BLEND_MODE_NORMAL) {
+        if(mask_buf == NULL && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; dest_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        dest_buf_u16[dest_x] = l8_to_rgb565(chan_val);
+                    }
+                    dest_buf_u16 = drawbuf_next_row(dest_buf_u16, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf == NULL && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_WITH_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; dest_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        dest_buf_u16[dest_x] = lv_color_8_16_mix(chan_val, dest_buf_u16[dest_x], opa);
+                    }
+                    dest_buf_u16 = drawbuf_next_row(dest_buf_u16, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_WITH_MASK(dsc)) {
+
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; dest_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        dest_buf_u16[dest_x] = lv_color_8_16_mix(chan_val, dest_buf_u16[dest_x], mask_buf[dest_x]);
+                    }
+                    dest_buf_u16 = drawbuf_next_row(dest_buf_u16, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+        else if(mask_buf && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_RGB565_MIX_MASK_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; dest_x < w; dest_x++, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        dest_buf_u16[dest_x] = lv_color_8_16_mix(chan_val, dest_buf_u16[dest_x], LV_OPA_MIX2(mask_buf[dest_x], opa));
+                    }
+                    dest_buf_u16 = drawbuf_next_row(dest_buf_u16, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+    }
+    else {
+        for(y = 0; y < h; y++) {
+            for(dest_x = 0, src_x = 0; dest_x < w; dest_x++, src_x += 4) {
+                uint16_t res = 0;
+                uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                switch(dsc->blend_mode) {
+                    case LV_BLEND_MODE_ADDITIVE:
+                        // Additive blending mode
+                        res = (LV_MIN(dest_buf_u16[dest_x] + l8_to_rgb565(chan_val), 0xFFFF));
+                        break;
+                    case LV_BLEND_MODE_SUBTRACTIVE:
+                        // Subtractive blending mode
+                        res = (LV_MAX(dest_buf_u16[dest_x] - l8_to_rgb565(chan_val), 0));
+                        break;
+                    case LV_BLEND_MODE_MULTIPLY:
+                        // Multiply blending mode
+                        res = ((((dest_buf_u16[dest_x] >> 11) * (l8_to_rgb565(chan_val) >> 3)) & 0x1F) << 11) |
+                              ((((dest_buf_u16[dest_x] >> 5) & 0x3F) * ((l8_to_rgb565(chan_val) >> 2) & 0x3F) >> 6) << 5) |
+                              (((dest_buf_u16[dest_x] & 0x1F) * (l8_to_rgb565(chan_val) & 0x1F)) >> 5);
+                        break;
+                    default:
+                        LV_LOG_WARN("Not supported blend mode: %d", dsc->blend_mode);
+                        return;
+                }
+
+                if(mask_buf == NULL && opa >= LV_OPA_MAX) {
+                    dest_buf_u16[dest_x] = res;
+                }
+                else if(mask_buf == NULL && opa < LV_OPA_MAX) {
+                    dest_buf_u16[dest_x] = lv_color_16_16_mix(res, dest_buf_u16[dest_x], opa);
+                }
+                else {
+                    if(opa >= LV_OPA_MAX)
+                        dest_buf_u16[dest_x] = lv_color_16_16_mix(res, dest_buf_u16[dest_x], mask_buf[dest_x]);
+                    else
+                        dest_buf_u16[dest_x] = lv_color_16_16_mix(res, dest_buf_u16[dest_x], LV_OPA_MIX2(mask_buf[dest_x], opa));
+                }
+            }
+
+            dest_buf_u16 = drawbuf_next_row(dest_buf_u16, dest_stride);
+            src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+            if(mask_buf) mask_buf += mask_stride;
+        }
+    }
+}
+#endif
+
+#if LV_DRAW_SW_SUPPORT_AL88
 static void LV_ATTRIBUTE_FAST_MEM al88_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc)
 {
     int32_t w = dsc->dest_w;
@@ -988,6 +1131,15 @@ static inline uint16_t LV_ATTRIBUTE_FAST_MEM lv_color_24_16_mix(const uint8_t *
     }
 }
 
+#if LV_DRAW_SW_SUPPORT_I1
+
+static inline uint8_t LV_ATTRIBUTE_FAST_MEM get_bit(const uint8_t * buf, int32_t bit_idx)
+{
+    return (buf[bit_idx / 8] >> (7 - (bit_idx % 8))) & 1;
+}
+
+#endif
+
 static inline void * LV_ATTRIBUTE_FAST_MEM drawbuf_next_row(const void * buf, uint32_t stride)
 {
     return (void *)((uint8_t *)buf + stride);

src/draw/sw/blend/lv_draw_sw_blend_to_rgb888.c

@@ -42,6 +42,12 @@
     static void /* LV_ATTRIBUTE_FAST_MEM */ al88_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc, uint32_t dest_px_size);
 #endif
 
+#if LV_DRAW_SW_SUPPORT_I1
+    static void /* LV_ATTRIBUTE_FAST_MEM */ i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc, uint32_t dest_px_size);
+
+    static inline uint8_t /* LV_ATTRIBUTE_FAST_MEM */ get_bit(const uint8_t * buf, int32_t bit_idx);
+#endif
+
 #if LV_DRAW_SW_SUPPORT_L8
     static void /* LV_ATTRIBUTE_FAST_MEM */ l8_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc, uint32_t dest_px_size);
 #endif
@@ -155,6 +161,22 @@ static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * b
     #define LV_DRAW_SW_ARGB8888_BLEND_NORMAL_TO_RGB888_MIX_MASK_OPA(...)    LV_RESULT_INVALID
 #endif
 
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_888
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_888(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_WITH_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_WITH_OPA(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_WITH_MASK
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_WITH_MASK(...)  LV_RESULT_INVALID
+#endif
+
+#ifndef LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_MIX_MASK_OPA
+    #define LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_MIX_MASK_OPA(...)  LV_RESULT_INVALID
+#endif
+
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
@@ -317,6 +339,11 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_rgb888(_lv_draw_sw_blend_im
         case LV_COLOR_FORMAT_AL88:
             al88_image_blend(dsc, dest_px_size);
             break;
+#endif
+#if LV_DRAW_SW_SUPPORT_I1
+        case LV_COLOR_FORMAT_I1:
+            i1_image_blend(dsc, dest_px_size);
+            break;
 #endif
         default:
             LV_LOG_WARN("Not supported source color format");
@@ -328,8 +355,97 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_rgb888(_lv_draw_sw_blend_im
  *   STATIC FUNCTIONS
  **********************/
 
-#if LV_DRAW_SW_SUPPORT_AL88
+#if LV_DRAW_SW_SUPPORT_I1
+static void LV_ATTRIBUTE_FAST_MEM i1_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc, uint32_t dest_px_size)
+{
+    int32_t w = dsc->dest_w;
+    int32_t h = dsc->dest_h;
+    lv_opa_t opa = dsc->opa;
+    uint8_t * dest_buf_u8 = dsc->dest_buf;
+    int32_t dest_stride = dsc->dest_stride;
+    const uint8_t * src_buf_i1 = dsc->src_buf;
+    int32_t src_stride = dsc->src_stride;
+    const lv_opa_t * mask_buf = dsc->mask_buf;
+    int32_t mask_stride = dsc->mask_stride;
 
+    int32_t dest_x;
+    int32_t src_x;
+    int32_t y;
+
+    if(dsc->blend_mode == LV_BLEND_MODE_NORMAL) {
+        if(mask_buf == NULL && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_888(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x += dest_px_size, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        dest_buf_u8[dest_x + 2] = chan_val;
+                        dest_buf_u8[dest_x + 1] = chan_val;
+                        dest_buf_u8[dest_x + 0] = chan_val;
+                    }
+                    dest_buf_u8 = drawbuf_next_row(dest_buf_u8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf == NULL && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_WITH_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x += dest_px_size, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_24_mix(chan_val, &dest_buf_u8[dest_x], opa);
+                    }
+                    dest_buf_u8 = drawbuf_next_row(dest_buf_u8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                }
+            }
+        }
+        else if(mask_buf && opa >= LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_WITH_MASK(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x += dest_px_size, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_24_mix(chan_val, &dest_buf_u8[dest_x], mask_buf[src_x]);
+                    }
+                    dest_buf_u8 = drawbuf_next_row(dest_buf_u8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+        else if(mask_buf && opa < LV_OPA_MAX) {
+            if(LV_RESULT_INVALID == LV_DRAW_SW_I1_BLEND_NORMAL_TO_888_MIX_MASK_OPA(dsc)) {
+                for(y = 0; y < h; y++) {
+                    for(dest_x = 0, src_x = 0; src_x < w; dest_x += dest_px_size, src_x++) {
+                        uint8_t chan_val = get_bit(src_buf_i1, src_x) * 255;
+                        lv_color_8_24_mix(chan_val, &dest_buf_u8[dest_x], LV_OPA_MIX2(opa, mask_buf[src_x]));
+                    }
+                    dest_buf_u8 = drawbuf_next_row(dest_buf_u8, dest_stride);
+                    src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+                    mask_buf += mask_stride;
+                }
+            }
+        }
+    }
+    else {
+        for(y = 0; y < h; y++) {
+            for(dest_x = 0, src_x = 0; src_x < w; dest_x += dest_px_size, src_x++) {
+                lv_color32_t src_argb;
+                src_argb.red = get_bit(src_buf_i1, src_x) * 255;
+                src_argb.green = src_argb.red;
+                src_argb.blue = src_argb.red;
+                if(mask_buf == NULL) src_argb.alpha = opa;
+                else src_argb.alpha = LV_OPA_MIX2(mask_buf[src_x], opa);
+                blend_non_normal_pixel(&dest_buf_u8[dest_x], src_argb, dsc->blend_mode);
+            }
+            if(mask_buf) mask_buf += mask_stride;
+            dest_buf_u8 = drawbuf_next_row(dest_buf_u8, dest_stride);
+            src_buf_i1 = drawbuf_next_row(src_buf_i1, src_stride);
+        }
+    }
+}
+#endif
+
+#if LV_DRAW_SW_SUPPORT_AL88
 static void LV_ATTRIBUTE_FAST_MEM al88_image_blend(_lv_draw_sw_blend_image_dsc_t * dsc, uint32_t dest_px_size)
 {
     int32_t w = dsc->dest_w;
@@ -849,6 +965,16 @@ static inline void LV_ATTRIBUTE_FAST_MEM lv_color_24_24_mix(const uint8_t * src,
     }
 }
 
+#if LV_DRAW_SW_SUPPORT_I1
+
+static inline uint8_t LV_ATTRIBUTE_FAST_MEM get_bit(const uint8_t * buf, int32_t bit_idx)
+{
+    return (buf[bit_idx / 8] >> (7 - (bit_idx % 8))) & 1;
+}
+
+#endif
+
+
 static inline void * LV_ATTRIBUTE_FAST_MEM drawbuf_next_row(const void * buf, uint32_t stride)
 {
     return (void *)((uint8_t *)buf + stride);

src/draw/sw/lv_draw_sw.c

@@ -226,6 +226,37 @@ void lv_draw_sw_rgb565_swap(void * buf, uint32_t buf_size_px)
 
 }
 
+void lv_draw_sw_i1_invert(void * buf, uint32_t buf_size)
+{
+    if(buf == NULL) return;
+
+    uint8_t * byte_buf = (uint8_t *)buf;
+    uint32_t i;
+
+    /*Make the buffer aligned*/
+    while(((uintptr_t)(byte_buf) & (sizeof(int) - 1)) && buf_size > 0) {
+        *byte_buf = ~(*byte_buf);
+        byte_buf++;
+        buf_size--;
+    }
+
+    if(buf_size >= sizeof(uint32_t)) {
+        uint32_t * aligned_addr = (uint32_t *)byte_buf;
+        uint32_t word_count = buf_size / 4;
+
+        for(i = 0; i < word_count; ++i) {
+            aligned_addr[i] = ~aligned_addr[i];
+        }
+
+        byte_buf = (uint8_t *)(aligned_addr + word_count);
+        buf_size = buf_size % sizeof(uint32_t);
+    }
+
+    for(i = 0; i < buf_size; ++i) {
+        byte_buf[i] = ~byte_buf[i];
+    }
+}
+
 void lv_draw_sw_rotate(const void * src, void * dest, int32_t src_width, int32_t src_height, int32_t src_stride,
                        int32_t dest_stride, lv_display_rotation_t rotation, lv_color_format_t color_format)
 {

src/draw/sw/lv_draw_sw.h

@@ -179,6 +179,16 @@ void lv_draw_sw_vector(lv_draw_unit_t * draw_unit, const lv_draw_vector_task_dsc
  */
 void lv_draw_sw_rgb565_swap(void * buf, uint32_t buf_size_px);
 
+/**
+ * Invert a draw buffer in the I1 color format.
+ * Conventionally, a bit is set to 1 during blending if the luminance is greater than 127.
+ * Depending on the display controller used, you might want to have different behavior.
+ * The inversion will be performed in place.
+ * @param buf          pointer to the buffer to be inverted
+ * @param buf_size     size of the buffer in bytes
+ */
+void lv_draw_sw_i1_invert(void * buf, uint32_t buf_size);
+
 /**
  * Rotate a buffer into another buffer
  * @param src           the source buffer

src/lv_conf_internal.h

@@ -426,6 +426,17 @@
 	        #define LV_DRAW_SW_SUPPORT_A8			1
 	    #endif
 	#endif
+	#ifndef LV_DRAW_SW_SUPPORT_I1
+	    #ifdef _LV_KCONFIG_PRESENT
+	        #ifdef CONFIG_LV_DRAW_SW_SUPPORT_I1
+	            #define LV_DRAW_SW_SUPPORT_I1 CONFIG_LV_DRAW_SW_SUPPORT_I1
+	        #else
+	            #define LV_DRAW_SW_SUPPORT_I1 0
+	        #endif
+	    #else
+	        #define LV_DRAW_SW_SUPPORT_I1			1
+	    #endif
+	#endif
 
 	/* Set the number of draw unit.
      * > 1 requires an operating system enabled in `LV_USE_OS`

src/others/snapshot/lv_snapshot.c

@@ -81,6 +81,7 @@ lv_result_t lv_snapshot_take_to_draw_buf(lv_obj_t * obj, lv_color_format_t cf, l
         case LV_COLOR_FORMAT_XRGB8888:
         case LV_COLOR_FORMAT_ARGB8888:
         case LV_COLOR_FORMAT_L8:
+        case LV_COLOR_FORMAT_I1:
             break;
         default:
             LV_LOG_WARN("Not supported color format");