SPIR-V Built-In
ViewIndex
View index of a shader invocation
ViewIndex
The ViewIndex
decoration can be applied to a shader input which will
be filled with the index of the view that is being processed by the current
shader invocation.
If multiview is enabled in the render pass, this value will be the index of one of the bits set in the view mask of the subpass the pipeline is compiled against. If multiview is not enabled in the render pass, this value will be zero.
Valid Usage
VUID-ViewIndex-ViewIndex-04401
The ViewIndex
decoration must be used only within the
MeshEXT
, Vertex
, Geometry
, TessellationControl
,
TessellationEvaluation
or Fragment
Execution
Model
VUID-ViewIndex-ViewIndex-04402
The variable decorated with ViewIndex
must be declared using the
Input
Storage
Class
VUID-ViewIndex-ViewIndex-04403
The variable decorated with ViewIndex
must be declared as a scalar
32-bit integer value