PointSize(3)

Name

PointSize - Size of a point primitive

Description

PointSize

Decorating a variable with the PointSize built-in decoration will make that variable contain the size of point primitives or the final rasterization of polygons if polygon mode is VK_POLYGON_MODE_POINT when VkPhysicalDeviceMaintenance5Properties::polygonModePointSize is set to VK_TRUE . The value written to the variable decorated with PointSize by the last pre-rasterization shader stage in the pipeline is used as the framebuffer-space size of points produced by rasterization. If the maintenance5 feature is enabled and a value is not written to a variable decorated with PointSize, a value of 1.0 is used as the size of points.

When PointSize decorates a variable in the Input Storage Class, it contains the data written to the output variable decorated with PointSize from the previous shader stage.
Valid Usage

  • VUID-PointSize-PointSize-04314
    The PointSize decoration must be used only within the MeshEXT, MeshNV, Vertex, TessellationControl, TessellationEvaluation, or Geometry Execution Model

  • VUID-PointSize-PointSize-04315
    The variable decorated with PointSize within the MeshEXT, MeshNV, or Vertex Execution Model must be declared using the Output Storage Class

  • VUID-PointSize-PointSize-04316
    The variable decorated with PointSize within the TessellationControl, TessellationEvaluation, or Geometry Execution Model must not be declared using a Storage Class other than Input or Output

  • VUID-PointSize-PointSize-04317
    The variable decorated with PointSize must be declared as a scalar 32-bit floating-point value

See Also

No cross-references are available

Document Notes

For more information, see the Vulkan Specification (NOTE: cannot determine Specification page containing this refpage).

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.