Model viewer: fix flickering

Author: demoth

cake-model-viewer/src/main/kotlin/org/demoth/cake/modelviewer/Lwjgl3Launcher.kt

@@ -23,6 +23,8 @@ private val defaultConfiguration: Lwjgl3ApplicationConfiguration
         configuration.useVsync(true)
         //// Limits FPS to the refresh rate of the currently active monitor.
         configuration.setForegroundFPS(Lwjgl3ApplicationConfiguration.getDisplayMode().refreshRate)
+        // increase depth buffer precision 16 -> 24 to avoid polygon flickering
+        configuration.setBackBufferConfig(8, 8, 8, 8, 24, 0, 0)
         //// If you remove the above line and set Vsync to false, you can get unlimited FPS, which can be
         //// useful for testing performance, but can also be very stressful to some hardware.
         //// You may also need to configure GPU drivers to fully disable Vsync; this can cause screen tearing.