rep (Vertex Shader)

Start a rep...endrep block.

Syntax

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

Remarks

Vertex shader versions	1_1	2_0	2_x	2_sw	3_0	3_sw
rep		x	x	x	x	x

• rep uses Constant Integer Registers (i#).
• endrep must follow the last instruction of a repeat block.
• The endrep offset must be greater than the rep instruction offset.
• Repeat loops cannot be nested.
• Repeat loops are allowed to be either completely inside an if block or completely surrounding it, no straddling is allowed.
• rep consumes one vertex shader instruction slot but must be used with endrep, which consumes another.
• The maximum loop iteration count is 255.

Here is how the instruction works.

StartLoopOffset = next instruction offset
    LoopIterationCount   = IntegerRegister.x
    if (LoopIterationCount <= 0)
        Continue execution after the next EndRep instruction