LCD driver: fix garbage when a glyph extends off screen.

2015-11-15 13:39:08 -08:00
parent abcfb06b0b
commit 2e716e099c
1 changed files with 3 additions and 0 deletions
--- a/sys/pic32/gpanel-nt35702.c
+++ b/sys/pic32/gpanel-nt35702.c
@@ -327,6 +327,9 @@ static void nt35702_draw_glyph(const struct gpanel_font_t *font,
    int h, w, c;
    unsigned bitmask = 0;

+    if (x + width > _width ||  y + font->height > _height)
+        return;
+
    if (background >= 0) {
        /*
         * Clear background.