X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Flibgame%2Fsystem.c;h=4f90a2d120835da09bda46a89f3877979b700ed5;hp=ed51e626a8f473747e4b9644c532f95e76b9b490;hb=cba1a8ce5ba37f1e0a826ce63cf491044573681a;hpb=e988c970c05df475ffe16b750d5ac571666dcda9

diff --git a/src/libgame/system.c b/src/libgame/system.c
index ed51e626..4f90a2d1 100644
--- a/src/libgame/system.c
+++ b/src/libgame/system.c
@@ -525,6 +525,18 @@ Bitmap *CreateBitmap(int width, int height, int depth)
 
 void ReCreateBitmap(Bitmap **bitmap, int width, int height)
 {
+  if (*bitmap != NULL)
+  {
+    /* if new bitmap size fits into old one, no need to re-create it */
+    if (width  <= (*bitmap)->width &&
+        height <= (*bitmap)->height)
+      return;
+
+    /* else adjust size so that old and new bitmap size fit into it */
+    width  = MAX(width,  (*bitmap)->width);
+    height = MAX(height, (*bitmap)->height);
+  }
+
   Bitmap *new_bitmap = CreateBitmap(width, height, DEFAULT_DEPTH);
 
   if (*bitmap == NULL)