Vulkan.Extensions.VK_EXT_post_depth_coverage

Name

VK_EXT_post_depth_coverage - device extension

VK_EXT_post_depth_coverage

Name String

VK_EXT_post_depth_coverage

Extension Type

Device extension

Registered Extension Number

156

Revision

1

Ratification Status

Not ratified

Extension and Version Dependencies; Contact

• Daniel Koch @dgkoch%0A*Here describe the issue or question you have about the VK_EXT_post_depth_coverage extension*

Other Extension Metadata

Last Modified Date

2017-07-17

Interactions and External Dependencies

• This extension requires SPV_KHR_post_depth_coverage
• This extension provides API support for GL_ARB_post_depth_coverage and GL_EXT_post_depth_coverage

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 early 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 https://registry.khronos.org/vulkan/specs/1.3-extensions/html/vkspec.html#interfaces-builtin-variables-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 Enum Constants

• EXT_POST_DEPTH_COVERAGE_EXTENSION_NAME

• EXT_POST_DEPTH_COVERAGE_SPEC_VERSION

New SPIR-V Capabilities

• SampleMaskPostDepthCoverage

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.

Documentation

type EXT_POST_DEPTH_COVERAGE_SPEC_VERSION = 1

pattern EXT_POST_DEPTH_COVERAGE_SPEC_VERSION :: forall a. Integral a => a

type EXT_POST_DEPTH_COVERAGE_EXTENSION_NAME = "VK_EXT_post_depth_coverage"

pattern EXT_POST_DEPTH_COVERAGE_EXTENSION_NAME :: forall a. (Eq a, IsString a) => a