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
- This extension provides API support for
GL_NV_sample_mask_override_coverage
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