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callnz pred - vs

Call if not zero, with a predicate. Performs a conditional call to the instruction marked by the label index. Predication uses a boolean value to determine whether of not to perform the instruction.

Syntax

callnz l#, [!]p0.{x|y|z|w}

 

where:

  • l# is a label - vs marking the beginning of the subroutine to be called.
  • [!] is an optional negate modifier.
  • p0 is the Predicate Register.
  • {x|y|z|w} is the required replicate swizzle on p0.

Remarks

Vertex shader versions1_12_02_x2_sw3_03_sw
callnz predxxxx

 

This instruction does the following:



if (specified register component is not zero)
{
    Push address of the next instruction to the return address stack.
    Continue execution from the instruction marked by the label.
}


This instruction consumes one vertex shader instruction slot.

 

 

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