To set up the "blend" factors if a Program has .blendEnabled.
Program
.blendEnabled
@:value(0)staticinlineread onlyZERO:Int = 0
@:value(1)staticinlineread onlyONE:Int = 1
@:value(2)staticinlineread onlySRC_COLOR:Int = 2
@:value(3)staticinlineread onlyONE_MINUS_SRC_COLOR:Int = 3
@:value(4)staticinlineread onlyDST_COLOR:Int = 4
@:value(5)staticinlineread onlyONE_MINUS_DST_COLOR:Int = 5
@:value(6)staticinlineread onlySRC_ALPHA:Int = 6
@:value(7)staticinlineread onlyONE_MINUS_SRC_ALPHA:Int = 7
@:value(8)staticinlineread onlyDST_ALPHA:Int = 8
@:value(9)staticinlineread onlyONE_MINUS_DST_ALPHA:Int = 9
@:value(10)staticinlineread onlySRC_ALPHA_SATURATE:Int = 10
@:value(11)staticinlineread onlyCONSTANT_COLOR:Int = 11
@:value(12)staticinlineread onlyONE_MINUS_CONSTANT_COLOR:Int = 12
@:value(13)staticinlineread onlyCONSTANT_ALPHA:Int = 13
@:value(14)staticinlineread onlyONE_MINUS_CONSTANT_ALPHA:Int = 14