fix(blend) fix green channel with additive blending

lvgl · Sep 30, 2021 · 78158f0 · 78158f0
1 parent c9d3965
commit 78158f0
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/draw/lv_draw_blend.c b/src/draw/lv_draw_blend.c
@@ -969,6 +969,7 @@ static inline lv_color_t color_blend_true_color_additive(lv_color_t fg, lv_color
 #endif
 
 #if LV_COLOR_DEPTH == 8
+    tmp = bg.ch.green + fg.ch.green;
     fg.ch.green = LV_MIN(tmp, 7);
 #elif LV_COLOR_DEPTH == 16
 #if LV_COLOR_16_SWAP == 0
@@ -982,6 +983,7 @@ static inline lv_color_t color_blend_true_color_additive(lv_color_t fg, lv_color
 #endif
 
 #elif LV_COLOR_DEPTH == 32
+    tmp = bg.ch.green + fg.ch.green;
     fg.ch.green = LV_MIN(tmp, 255);
 #endif
 
@@ -1028,4 +1030,4 @@ static inline lv_color_t color_blend_true_color_subtractive(lv_color_t fg, lv_co
 }
 #endif
 
-#endif // LV_USE_GPU_SDL_RENDER
+#endif // LV_USE_GPU_SDL_RENDER