From a0a0330a6c1675ab9d43bafb6ebd18da720b744b Mon Sep 17 00:00:00 2001
From: Vincent Wei <vincent@minigui.org>
Date: Wed, 5 May 2021 15:25:55 +0800
Subject: [PATCH] PixmanBlt only works when source surface and destination
 surface are not same

---
 src/newgal/blit.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/newgal/blit.c b/src/newgal/blit.c
index 9badad3d..277c71fd 100644
--- a/src/newgal/blit.c
+++ b/src/newgal/blit.c
@@ -313,7 +313,8 @@ int GAL_CalculateBlit(GAL_Surface *surface)
             // have colorkey
             surface->map->sw_blit = GAL_SoftBlit;
         }
-        else if (surface->pix_img && surface->map->dst->pix_img) {
+        else if (surface->pix_img && surface->map->dst->pix_img &&
+                surface != surface->map->dst) {
             surface->map->sw_blit = GAL_PixmanBlit;
         }
         else {