From: Holger Schemel <info@artsoft.org>
Date: Sat, 5 Sep 2020 18:50:00 +0000 (+0200)
Subject: added check for OpenGL renderer when trying to change vsync mode
X-Git-Tag: 4.2.0.2~8
X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=commitdiff_plain;h=3eb5d3a10dc341e94a1290bbe1f9735e18e83e5f

added check for OpenGL renderer when trying to change vsync mode
---

diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index d34feb4c..40766745 100644
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -877,6 +877,10 @@ void SDLSetScreenRenderingMode(char *screen_rendering_mode)
 
 void SDLSetScreenVsyncMode(char *vsync_mode)
 {
+  // changing vsync mode without re-creating renderer only supported by OpenGL
+  if (!strPrefixLower((char *)SDLGetRendererName(), "opengl"))
+    return;
+
   int interval = VSYNC_MODE_STR_TO_INT(vsync_mode);
   int result = SDL_GL_SetSwapInterval(interval);