diff -ur lvgl-6.1.2/src/lv_draw/lv_draw_basic.c lvgl/src/lv_draw/lv_draw_basic.c
--- lvgl-6.1.2/src/lv_draw/lv_draw_basic.c	2020-02-26 22:35:12.000000000 +0000
+++ lvgl/src/lv_draw/lv_draw_basic.c	2020-04-16 09:24:53.015257341 +0000
@@ -530,7 +530,7 @@
         else {
             for(row = masked_a.y1; row <= masked_a.y2; row++) {
 #if LV_USE_GPU
-                if(disp->driver.gpu_blend_cb == false) {
+                if(disp->driver.gpu_blend_cb == NULL) {
                     sw_mem_blend(vdb_buf_tmp, (lv_color_t *)map_p, map_useful_w, opa);
                 } else {
                     disp->driver.gpu_blend_cb(&disp->driver, vdb_buf_tmp, (lv_color_t *)map_p, map_useful_w, opa);
diff -ur lvgl-6.1.2/src/lv_objx/lv_img.c lvgl/src/lv_objx/lv_img.c
--- lvgl-6.1.2/src/lv_objx/lv_img.c	2020-02-26 22:35:12.000000000 +0000
+++ lvgl/src/lv_objx/lv_img.c	2020-04-16 09:24:23.419691790 +0000
@@ -355,8 +355,8 @@
 
         if(ext->cf == LV_IMG_CF_TRUE_COLOR || ext->cf == LV_IMG_CF_RAW) cover = lv_area_is_in(mask, &img->coords);
 
-        const lv_style_t * style = lv_img_get_style(img, LV_IMG_STYLE_MAIN);
-        if(style->image.opa < LV_OPA_MAX) return false;
+        const lv_style_t * style_ = lv_img_get_style(img, LV_IMG_STYLE_MAIN);
+        if(style_->image.opa < LV_OPA_MAX) return false;
 
         return cover;
     } else if(mode == LV_DESIGN_DRAW_MAIN) {