Legacy Document

Important: The information in this document is obsolete and should not be used for new development.

Transfer Omit Byte Masks and Shifts
The gxOmitTransferMask1 enumeration defines which bits in an omit byte correspond to the data compression opcode for the field descriptors in the gxTransferMode structure. The sequence of data is also defined. The omit byte and its related data sequence is given in the section "Transfer Mode Data" beginning on page 7-44.
enum gxOmitTransferMask1 {
   gxOmitTransferSpaceMask    = 0xC0,
   gxOmitTransferSetMask      = 0x30,
   gxOmitTransferProfileMask  = 0x0C
};
Constant descriptions

gxOmitTransferSpaceMask
The mask used to select the data compression bits for the space field descriptor.
gxOmitTransferSetMask
The mask used to select the data compression bits for the set field descriptor.
gxOmitTransferProfileMask
The mask used to select the data compression bits for the profile field descriptor.
Once one of the gxOmitTransferMask1 enumeration masks has been used to select a data compression opcode for a field descriptor in the gxTransferMode structure, the corresponding bit shift from the gxOmitTransferShift1 enumeration can be applied to the selected bits. The selected bits must be moved to the right by the indicated number of bits to isolate the data compression opcode so that it can be compared to other values.
enum gxOmitTransferShift1 {
   gxOmitTransferSpaceShift   = 6,
   gxOmitTransferSetShift     = 4,
   gxOmitTransferProfileShift = 2
};
Constant descriptions

gxOmitTransferSpaceShift
The bit shift required to isolate the compression bits for the space field descriptor.
gxOmitTransferSetShift
The bit shift required to isolate the compression bits for the set field descriptor.
gxOmitTransferProfileShift
The bit shift required to isolate the compression bits for the profile field descriptor.
The gxOmitTransferMask2 enumeration defines which bits in a second omit byte correspond to the data compression opcode for additional field descriptors in the gxTransferMode structure. The sequence of data is also defined. The omit byte and its related data sequence is given in the section "Transfer Mode Data" beginning on page 7-44.
enum gxOmitTransferMask2 {
   gxOmitTransferSourceMatrixMask= 0xC0,
   gxOmitTransferDeviceMatrixMask= 0x30,
   gxOmitTransferResultMatrixMask= 0x0C,
   gxOmitTransferFlagsMask       = 0x03
};
Constant descriptions

gxOmitTransferSourceMatrixMask
The mask used to select the data compression bits for the sourceMatrix field descriptor.
gxOmitTransferDeviceMatrixMask
The mask used to select the data compression bits for the deviceMatrix field descriptor.
gxOmitTransferResultMatrixMask
The mask used to select the data compression bits for the resultMatrix field descriptor.
gxOmitTransferFlagsMask
The mask used to select the data compression bits for the flags field descriptor.
Once one of the gxOmitTransferMask2 enumeration masks has been used to select a data compression opcode for a field descriptor in the gxTransferMode structure, the corresponding bit shift from the gxOmitTransferShift2 enumeration can be applied to the selected bits. The selected bits must be moved to the right by the indicated number of bits to isolate the data compression opcode so that it can be compared to other values.
enum gxOmitTransferShift2 {
   gxOmitTransferSourceMatrixShift  = 6,
   gxOmitTransferDeviceMatrixShift  = 4,
   gxOmitTransferResultMatrixShift  = 2,
   gxOmitTransferFlagsShift         = 0
};
Constant descriptions

gxOmitTransferSourceMatrixShift
The bit shift required to isolate the compression bits for the sourceMatrix field descriptor.
gxOmitTransferDeviceMatrixShift
The bit shift required to isolate the compression bits for the deviceMatrix field descriptor.
gxOmitTransferResultMatrixShift
The bit shift required to isolate the compression bits for the resultMatrix field descriptor.
gxOmitTransferFlagsShift
The bit shift required to isolate the compression bits for the flags field descriptor.