engine: ref: try to bruteforce all available renderers if we're failed to load requested one

engine/client/ref_common.c

@@ -669,17 +669,20 @@ qboolean R_Init( void )
 
 	if( !(success = R_LoadRenderer( refopt )))
 	{
-		// check if we are tried to load default accelearated renderer already
-		// and if not, load it first
-		if( Q_strcmp( refopt, DEFAULT_ACCELERATED_RENDERER ) )
-		{
-			success = R_LoadRenderer( refopt );
-		}
+		int i;
 
-		// software renderer is the last chance...
-		if( !success )
+		// cycle through renderers that we collected in CollectRendererNames
+		for( i = 0; i < ref.numRenderers; i++ )
 		{
-			success = R_LoadRenderer( DEFAULT_SOFTWARE_RENDERER );
+			// skip renderer that was requested but failed to load
+			if( Q_strcmp( refopt, ref.shortNames[i] ))
+				continue;
+
+			success = R_LoadRenderer( ref.shortNames[i] );
+
+			// yay, found working one
+			if( success )
+				break;
 		}
 	}
 

engine/common/com_strings.h

@@ -65,6 +65,7 @@ GNU General Public License for more details.
 
 #define XASH_ENGINE_NAME "Xash3D FWGS"
 
+// renderers order is important, software is always a last chance fallback
 #define DEFAULT_RENDERERS { "gl", "gles1", "gles2", "gl4es", "soft" }
 #define DEFAULT_RENDERERS_LEN 5