Returns the number of lanes in a wave on this architecture.
This function has no parameters.
The result will be between 4 and 128, and includes all waves: active, inactive, and/or helper lanes. The result returned from this function may vary significantly depending on the driver implementation.
This function is supported from shader model 6.0, in the following types of shaders:
uint laneCount = WaveGetLaneCount(); // number of lanes in wave