From 4761333a1a9c00ce73927c4b2d8cecb3afe64750 Mon Sep 17 00:00:00 2001
From: Vincent Wei <vincent@minigui.org>
Date: Sun, 13 Jan 2019 16:20:08 +0800
Subject: [PATCH] skip null pixels for subpixel

---
 src/newgdi/glyph.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/newgdi/glyph.c b/src/newgdi/glyph.c
index 09088b16..062fbd09 100644
--- a/src/newgdi/glyph.c
+++ b/src/newgdi/glyph.c
@@ -2915,6 +2915,13 @@ static void _dc_ft2subpixel_scan_line(PDC pdc, int xpos, int ypos,
             bits += 3;
             continue;
         }
+
+        // VincentWei: skip null pixel
+        if (bits[0] == 0 && bits[1] == 0 && bits[2] == 0) {
+            bits += 3;
+            continue;
+        }
+
         _glyph_move_to_pixel (pdc, x+xpos, ypos);
         pixel = _mem_get_pixel(pdc->cur_dst, GAL_BytesPerPixel (pdc->surface));