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Call if not zero. Performs a conditional call to the instruction marked by the label index.
Syntax
| callnz l#, [!]b# |
|---|
where:
- where l# is a label - vs marking the beginning of the subroutine to be called.
- [!] is the optional boolean NOT modifier.
- b# identifies a Constant Boolean Register.
Remarks
| Vertex shader versions | 1_1 | 2_0 | 2_x | 2_sw | 3_0 | 3_sw |
|---|---|---|---|---|---|---|
| callnz bool | x | x | x | x | x |
This instruction does the following:
if (specified boolean register 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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