From: Matthias Braun <matze@braunis.de>
Date: Sat, 14 Apr 2007 21:23:33 +0000 (+0000)
Subject: try to force vsyncing for opengl, the desktop resolution detection and vsyncing only... 
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=c174dfb2a675b039e915e01549950c7a5b554492;p=supertux.git

try to force vsyncing for opengl, the desktop resolution detection and vsyncing only works for SDL >= 1.2.10, so add an #ifdef around the code

SVN-Revision: 4977
---

diff --git a/src/main.cpp b/src/main.cpp
index e616ffe8a..17bd43185 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -362,6 +362,8 @@ void init_video()
   if(texture_manager != NULL)
     texture_manager->save_textures();
 
+/* unfortunately only newer SDLs have these infos */
+#if SDL_MAJOR_VERSION > 1 || SDL_MINOR_VERSION > 2 || (SDL_MINOR_VERSION == 2 && SDL_PATCHLEVEL >= 10)
   /* find which resolution the user normally uses */
   if(desktop_width == 0) {
     const SDL_VideoInfo *info = SDL_GetVideoInfo();
@@ -369,6 +371,10 @@ void init_video()
     desktop_height = info->current_h;
   }
 
+  /* we want vsync for smooth scrolling */
+  SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1);
+#endif
+
   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);