1.7 KiB
D3D9 Monitor Check
A separate application providing various music game relevant tests, e.g. the infamous IIDX “monitor check” without having to run the actual game. The tool can be used to debug and test your monitor regarding refresh rate calibration (custom monitor timings), v-sync issues or ghosting issues.
Simply run the tool without any arguments to get a full synopsis with usage instructions.
"Accuracy" remarks refresh rate test/monitor check
The tool has been tested on an actual cabinet with nvgpu setting different custom timings. The
accuracy seems to be even higher than what IIDX’s monitor check is actually showing. For example,
with a custom timing of 59.900 hz, this tool yields fairly accurate and stable avg. 59.902 hz.
The monitor check of IIDX 29 showed results of 59.8981 hz to 59.8997 hz on screen. As these are the only visible values to the user, determining a specific (avg.) value that can be used as input for other tooling or settings (e.g. patching charts to a different refresh rate on older games with bemanitools) is difficult. This doesn't mean that the game's monitor checks are actually inaccurate or wrong. Once the check is finished it uses the avg. value it determined to patch the chart data correctly. The value displayed to the user is just the floating value.
Thus, modern games with a built-in monitor check (starting IIDX 20) are syncing up fine and don't need any further patching or modifications.
For older games, picking a value that is not as close as possible to an accurate avg. value can easily lead to issues with sync. So it's recommended to use the d3d9-monitor-check tool to get the most accurate value.