VK_NV_sample_mask_override_coverage

Other Extension Metadata

Last Modified Date

2016-12-08

IP Status

No known IP claims.

Interactions and External Dependencies
Contributors
  • Daniel Koch, NVIDIA
  • Jeff Bolz, NVIDIA

Description

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.

New Enum Constants

  • VK_NV_SAMPLE_MASK_OVERRIDE_COVERAGE_EXTENSION_NAME
  • VK_NV_SAMPLE_MASK_OVERRIDE_COVERAGE_SPEC_VERSION

New Variable Decoration

New SPIR-V Capabilities

Version History

  • Revision 1, 2016-12-08 (Piers Daniell)
    • Internal revisions