Make sdsm optionnal

scene manager is not ready yet

src/config/user_config.hpp

@@ -467,6 +467,9 @@ namespace UserConfigParams
     PARAM_PREFIX BoolUserConfigParam        m_azdo
         PARAM_DEFAULT(BoolUserConfigParam(false, "enable_azdo",
         &m_video_group, "Enable 'Approaching Zero Driver Overhead' mode (very experimental !)"));
+    PARAM_PREFIX BoolUserConfigParam        m_sdsm
+        PARAM_DEFAULT(BoolUserConfigParam(false, "enable_sdsm",
+        &m_video_group, "Enable Sampled Distribued Shadow Map (buggy atm)"));
 
     // ---- Debug - not saved to config file
     /** If gamepad debugging is enabled. */

src/graphics/irr_driver.hpp

@@ -283,7 +283,7 @@ public:
 
     bool supportsSDSM() const
     {
-        return m_support_sdsm;
+        return m_support_sdsm && UserConfigParams::m_sdsm;
     }
 
     bool usesTextureCompression() const