This extension adds support for the following SPIR-V extension in Vulkan:

• SPV_NV_sample_mask_override_coverage

The extension provides access to the OverrideCoverageNV decoration under the SampleMaskOverrideCoverageNV capability. Adding this decoration to a variable with the SampleMask builtin decoration allows the shader to modify the coverage mask and affect which samples are used to process the fragment.

When using GLSL source-based shader languages, the override_coverage layout qualifier from GL_NV_sample_mask_override_coverage maps to the OverrideCoverageNV decoration. To use the override_coverage layout qualifier in GLSL the GL_NV_sample_mask_override_coverage extension must be enabled. Behavior is described in the GL_NV_sample_mask_override_coverage extension spec.

VK_NV_sample_mask_override_coverage

Name String

VK_NV_sample_mask_override_coverage

Extension Type

Device extension

Registered Extension Number

95

Revision

1

Contact

• Piers Daniell pdaniell-nv

Other Extension Metadata

Last Modified Date

2016-12-08

IP Status

No known IP claims.

Interactions and External Dependencies

• This extension requires SPV_NV_sample_mask_override_coverage
• This extension provides API support for GL_NV_sample_mask_override_coverage

Contributors

• Daniel Koch, NVIDIA
• Jeff Bolz, NVIDIA