Make tessellation optional

src/main.cpp

@@ -64,6 +64,7 @@ static void PrintUsage() {
 	::printf("  --gpu-assisted-validation <t|f>      Bounds-check shader accesses on the GPU.\n"
 	         "                                       Implies --vulkan-validation; very slow.\n");
 	::printf("  --shader-validation <true|false>     Enable shader validation.\n");
+	::printf("  --tessellation                      Draw tessellation patches; skipped by default.\n");
 	::printf("  --shader-optimization-type <value>   None, Size, or Performance.\n");
 	::printf("  --shader-log-direction <value>       Silent, Console, or File.\n");
 	::printf("  --shader-log-folder <path>           Shader log output folder.\n");
@@ -180,6 +181,11 @@ static bool ParseArgs(int argc, char* argv[], RunOptions& options, bool& show_he
 			continue;
 		}
 
+		if (arg == "--tessellation") {
+			options.config.tessellation_enabled = true;
+			continue;
+		}
+
 		if (arg == "--profile") {
 			options.config.profiler_enabled = true;
 			continue;