Frame per Second

Limit

LIMITFPS

Introduces a configurable delay between  screen refresh operations, so that the FPS is limited accordingly.

Skip

SKIPFPS

Introduces no delay in the screen operations, but skips several screen updates so that the actual FPS value is  limited without the program noticing it.

delay (msec)

Sets the delay time, expressed in milliseconds, for both the "Limit" (LIMITFPS) and "Skip" (SKIPFPS) options. To be noted that the FPS is related to the delay by the formula FPS = 1000/Delay or, the other way around, Delay = 1000/FPS. So if, for example, you desire an FPS not greater than 50, the corresponding value to get this effect is Delay = 20msec. Note that a greater delay means a slower frame rate.

Updates bigger than 1/4 screen size

QUARTERBLT

DxWnd can display an FPS counter based on the number of screen updates per second. This counter is accurate for applications that update the entire screen, but produces wildly exaggerated figures when a program makes frequent updates to small sections of the screen, such as counters, icons, or other tiny elements. This flag tells DxWnd to ignore screen updates that affect less than one quarter of the screen, producing a more realistic FPS figure.

Show FPS on title

SHOWFPS

When checked, the FPS counter is appended to the window title.

Show FPS overlay

SHOWFPSOVERLAY

When checked, the FPS counter is drawn as an overlay of the program client area, in a corner of the screen and periodically and randomly moved to other cornes to avoid accidentally overlap an important screen region.