SPIR-V Built-In
DeviceIndex
Index of the device executing the shader
DeviceIndex
The DeviceIndex decoration can be applied to a shader input which will
be filled with the device index of the physical device that is executing the
current shader invocation.
This value will be in the range ,
where physicalDeviceCount is the physicalDeviceCount member of
VkDeviceGroupDeviceCreateInfo.
Valid Usage
VUID-DeviceIndex-DeviceIndex-04205
The variable decorated with DeviceIndex must be declared using the
Input Storage Class
VUID-DeviceIndex-DeviceIndex-04206
The variable decorated with DeviceIndex must be declared as a
scalar 32-bit integer value