def pragma Directive

Pragma directive that manually allocates a floating-point shader register.

#pragma def( target, register, val1, val2,val3, val4 )

Parameters

Item	Description
target	Target that contains the register to allocate.
register	Floating-point shader register to allocate.
val0	First byte of the value to allocate to the specified register.
val1	Second byte of the value to allocate to the specified register.
val2	Third byte of the value to allocate to the specified register.
val3	Fourth byte of the value to allocate to the specified register.

The def pragma allows a developer to prefill a floating-point shader register with the specified value. This pragma is infrequently used.