dcl - (sm2, sm3 - ps asm)

Declare a pixel shader input register.

Syntax

dcl[_pp] dest[.mask]

Where:

[_pp] is optional partial precision. See Partial Precision.
dest is a destination register. It must be either a Input Color Register (vn), or an Texture Coordinate Register (tn).
[.mask] is an optional write mask that controls which components of the destination register that can be written to. See Destination Register Write Mask.

Pixel shader versions	1_1	1_2	1_3	1_4	2_0	2_x	2_sw	3_0	3_sw
dcl					x	x	x	x	x

All dcl instructions must appear before the first executable instruction.