Atomic RSX capture writes

rpcs3/Emu/RSX/RSXThread.cpp

@@ -2889,10 +2889,13 @@ namespace rsx
 			capture_current_frame = false;
 
 			const std::string file_path = fs::get_config_dir() + "captures/" + Emu.GetTitleID() + "_" + date_time::current_time_narrow() + "_capture.rrc";
-			const std::string file_data = cereal_serialize(frame_capture);
 
 			// todo: may want to compress this data?
-			if (fs::write_file(file_path, fs::rewrite, file_data))
+			const std::string file_data = cereal_serialize(frame_capture);
+
+			fs::pending_file temp(file_path);
+
+			if (temp.file && (temp.file.write(file_data), temp.commit(false)))
 			{
 				rsx_log.success("Capture successful: %s", file_path);
 			}