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DXGK_BRIGHTNESS_NIT_RANGE structure (d3dkmdt.h)

  • Article

This structure represents a linear range of supported millinit levels. If the driver has not set DXGK_BRIGHTNESS_CAPS.NitsBrightness, then all values represent brightness level in uncalibrated thousandths of a percent.

Syntax

typedef struct _DXGK_BRIGHTNESS_NIT_RANGE {
  UINT32 MinimumLevelMillinit;
  UINT32 MaximumLevelMillinit;
  UINT32 StepSizeMillinit;
} DXGK_BRIGHTNESS_NIT_RANGE;

Members

MinimumLevelMillinit

Lowest level in this range. Calibrated data provided to the Display Driver by OEMs should be taken with an On Pixel Ratio (OPR) percentage of 100% where each pixel is set to an RGB value of (255, 255, 255) or floating point equivalent.

MaximumLevelMillinit

Highest level in this range. Can be equal to MinimumLevelMillinit to represent a range with just one level. For example, this could support a display with just one boost level. Calibrated data provided to the Display Driver by OEMs should be taken with an On Pixel Ratio (OPR) percentage of 100% where each pixel is set to an RGB value of (255, 255, 255) or floating point equivalent.

StepSizeMillinit

The size of steps between valid brightness levels in the range. Minimum + StepSize * n is considered a valid level for non-negative n, where the level is equal to or below maximum. (Maximum – Minimum) % StepSize should always be zero. If MinimumLevelMillinit == MaximumLevelMillinit, then this should be zero.

Requirements

Requirement Value
Header d3dkmdt.h