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MGL_setGammaRamp

Sets the hardware gamma correction ramp.

Declaration

ibool MGLAPI MGL_setGammaRamp(
MGLDC *dc,
palette_ext_t *gamma,
int num,
int index,
ibool waitVRT)

Prototype In

mgraph.h

Parameters

dc | Device context to set gamma ramp values for
gamma | Pointer to array of gamma ramp values to set
num | Number of gamma entries to set
index | Starting index of first gamma entry to set
waitVRT | True if routine should sync to vertical retrace, false if not.

Description

This function sets part or all of the hardware gamma correction ramp for a device context. You can specify only a subset of the gamma ramp entried to be modified with the startIndex and numColors arguments. The changes to the gamma ramp take place immediately.

Note: This function is only valid for RGB display modes, and will do nothing in color index modes.

See Also

MGL_getGammaRamp

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