SPIR-V Built-In

BaryCoordNoPerspAMD

Barycentric coordinates of a fragment center in screen-space
BaryCoordNoPerspAMD

The BaryCoordNoPerspAMD decoration can be used to decorate a fragment shader input variable. This variable will contain the (I,J) pair of the barycentric coordinates corresponding to the fragment evaluated using linear interpolation at the fragment’s center. The K coordinate of the barycentric coordinates can be derived given the identity I + J + K = 1.0.

Valid Usage

VUID-BaryCoordNoPerspAMD-BaryCoordNoPerspAMD-04157

The BaryCoordNoPerspAMD decoration must be used only within the Fragment Execution Model

VUID-BaryCoordNoPerspAMD-BaryCoordNoPerspAMD-04158

The variable decorated with BaryCoordNoPerspAMD must be declared using the Input Storage Class

VUID-BaryCoordNoPerspAMD-BaryCoordNoPerspAMD-04159

The variable decorated with BaryCoordNoPerspAMD must be declared as a two-component vector of 32-bit floating-point values