Registered Extension Number

156

Revision

1

Extension and Version Dependencies

  • Requires Vulkan 1.0

Other Extension Metadata

Last Modified Date

2017-07-17

Interactions and External Dependencies
Contributors
  • Jeff Bolz, NVIDIA

Description

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

  • SPV_KHR_post_depth_coverage

which allows the fragment shader to control whether values in the SampleMask built-in input variable reflect the coverage after the early per-fragment depth and stencil tests are applied.

This extension adds a new PostDepthCoverage execution mode under the SampleMaskPostDepthCoverage capability. When this mode is specified along with EarlyFragmentTests, the value of an input variable decorated with the SampleMask built-in reflects the coverage after the early fragment tests are applied. Otherwise, it reflects the coverage before the depth and stencil tests.

When using GLSL source-based shading languages, the post_depth_coverage layout qualifier from GL_ARB_post_depth_coverage or GL_EXT_post_depth_coverage maps to the PostDepthCoverage execution mode.

New Object Types

None.

New Enum Constants

None.

New Enums

None.

New Structures

None.

New Functions

None.

New Built-In Variables

None.

New Variable Decoration

None.

New SPIR-V Capabilities

Issues

None yet.

Version History

  • Revision 1, 2017-07-17 (Daniel Koch)

    • Internal revisions

See Also

No cross-references are available

Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.