SPIR-V Built-In

CullPrimitiveEXT

Application-specified culling state per primitive
CullPrimitiveEXT

Decorating a variable with the CullPrimitiveEXT built-in decoration will make that variable contain the culling state of output primitives. If the per-primitive boolean value is true, the primitive will be culled, if it is false it will not be culled.

Valid Usage

VUID-CullPrimitiveEXT-CullPrimitiveEXT-07034

The CullPrimitiveEXT decoration must be used only within the MeshEXT Execution Model

VUID-CullPrimitiveEXT-CullPrimitiveEXT-07035

The variable decorated with CullPrimitiveEXT must be declared using the Output Storage Class

VUID-CullPrimitiveEXT-CullPrimitiveEXT-07036

The variable decorated with CullPrimitiveEXT must be declared as an array of boolean values

VUID-CullPrimitiveEXT-CullPrimitiveEXT-07037

The size of the array decorated with CullPrimitiveEXT must match the value specified by OutputPrimitivesEXT

VUID-CullPrimitiveEXT-CullPrimitiveEXT-07038

The variable decorated with CullPrimitiveEXT within the MeshEXT Execution Model must also be decorated with the PerPrimitiveEXT decoration