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Video Card Gamma Tag Type

Header: CMICCProfile.h

enum {
    cmSigPS2CRDVMSizeType = ''psvm'',
    cmSigVideoCardGammaType = ''vcgt'',
    cmSigMakeAndModelType = ''mmod'',
    cmSigMultiLocalizedUniCodeType = ''mluc''
};

Constant descriptions

cmSigPS2CRDVMSizeType
cmSigVideoCardGammaType

Constant that specifies video card gamma type signature in a video card gamma profile tag. That is, you use this constant to set the typeDescriptor field of the CMVideoCardGammaType structure. There is currently only one type possible for a video card gamma tag.

Starting with version 2.5, ColorSync supports an optional profile tag for video card gamma. The tag specifies gamma information, stored either as a formula or in table format, to be loaded into the video card when the profile containing the tag is put into use. As of version 2.5, the only ColorSync function that attempts to take advantage of video card gamma data is CMSetProfileByAVID.

cmSigMakeAndModelType
cmSigMultiLocalizedUniCodeType

© 2000 Apple Computer, Inc. (Last Updated 7/17/2000)