added restriction in arm sw scaler

diff --git a/platform/sdlv.cpp b/platform/sdlv.cpp
index 149d091..1d2a578 100644 (file)
--- a/platform/sdlv.cpp
+++ b/platform/sdlv.cpp
@@ -173,7 +173,8 @@ public:
 
                bool canEnable(int bpp, int w, int h) const
                {
-                       return bpp == 16 && w * 2 < GUI.Width && h * 2 < GUI.Height;
+                       return bpp == 16 && w * 2 < GUI.Width && h * 2 < GUI.Height &&
+                               w % 16 == 0 /* asm assumes w div by 16 */;
                }
 
                Scaler* instantiate(SDL_Surface* screen, int w, int h) const