rep - ps

Start a rep...endrep - ps block.

Syntax

rep i#

where i# is an integer register that specifies the repeat count in the .x component. See Constant Integer Register.

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

i#.x specifies the iteration count. The legal range is [0, 255]. Note that this instruction does not increment or decrement the value of i#.x.
i#.yzw are not used by the repeat block.
Repeat blocks may be nested. See Flow Control Limitations.
Repeat blocks are allowed to be either completely inside an if* block or completely surrounding it. No straddling is allowed.
Using the same i# for different or nested rep instructions is fine - each loop will iterate based on the specified count.

rep i2
    add r0, r0, c0
endrep