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c8c0862dee
* Bump API patch number and header version number to 57 for this update.
Github Issues:
* Fix error in description of ename:VK_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK
block size (public issue 342).
* Update documentation of ename:VK_PIPELINE_CREATE_ALLOW_DERIVATIVES_BIT
to explicitly mention both graphics and compute pipelines (public issue
525).
Internal Issues:
* Document that
slink:VkPhysicalDeviceLimits::pname:framebufferColorSampleCounts does
not cover integer formats (internal issue 550).
* Add a note under slink:VkImageViewCreateInfo describing how values meant
for one format can be sanitized when used via another format (internal
issue 927).
* Add valid usage statements to ftext:vkCmd* documenting that image
subresources used as attachments must not be accessed as non-attachments
in a render pass (internal issue 929).
* Remove obsolete 'validextensionstructs' attribute from +vk.xml+, the XML
schema, and the schema documentation (internal issue 946).
New Extensions:
* `VK_AMD_mixed_attachment_samples`
* `VK_EXT_post_depth_coverage`
* `VK_KHR_relaxed_block_layout`
* `VK_NV_depth_range_unrestricted`
93 lines
2.3 KiB
Plaintext
93 lines
2.3 KiB
Plaintext
[[VK_EXT_post_depth_coverage]]
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== VK_EXT_post_depth_coverage
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*Name String*::
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VK_EXT_post_depth_coverage
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*Extension Type*::
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Device extension
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*Registered Extension Number*::
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156
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*Status*::
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Complete
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*Last Modified Data*::
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2017-07-17
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*Revision*::
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1
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*Dependencies*::
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- This extension is written against version 1.0 of the Vulkan API.
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- This extension requires Vulkan 1.0.
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- This extension requires the
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https://www.khronos.org/registry/spir-v/extensions/KHR/SPV_KHR_post_depth_coverage.html[+SPV_KHR_post_depth_coverage+]
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SPIR-V extension.
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- This extension requires
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https://www.opengl.org/registry/specs/ARB/post_depth_coverage.txt[+GL_ARB_post_depth_coverage+]
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or
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https://www.opengl.org/registry/specs/EXT/post_depth_coverage.txt[+GL_EXT_post_depth_coverage+]
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for GLSL-based source languages.
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*Contributors*::
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- Jeff Bolz, NVIDIA
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*Contact*::
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- Daniel Koch (dkoch 'at' nvidia.com)
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This extension adds support for the following SPIR-V extension in Vulkan:
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* SPV_KHR_post_depth_coverage
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which allows the fragment shader to control whether values in the
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code:SampleMask built-in input variable reflect the coverage after the
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<<fragops-early,early per-fragment>> depth and stencil tests are applied.
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This extension adds a new code:PostDepthCoverage execution mode under the
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code:SampleMaskPostDepthCoverage capability.
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When this mode is specified along with code:EarlyFragmentTests, the value of
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an input variable decorated with the
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<<interfaces-builtin-variables-samplemask, code:SampleMask>> built-in
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reflects the coverage after the <<shaders-fragment-earlytest, early fragment
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tests>> are applied.
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Otherwise, it reflects the coverage before the depth and stencil tests.
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When using GLSL source-based shading languages, the code:post_depth_coverage
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layout qualifier from GL_ARB_post_depth_coverage or
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GL_EXT_post_depth_coverage maps to the code:PostDepthCoverage execution
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mode.
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=== New Object Types
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None.
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=== New Enum Constants
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None.
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=== New Enums
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None.
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=== New Structures
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None.
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=== New Functions
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None.
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=== New Built-In Variables
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None.
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=== New Variable Decoration
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None.
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=== New SPIR-V Capabilities
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* <<spirvenv-capabilities-table-postdepthcoverage,SampleMaskPostDepthCoverage>>
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=== Issues
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None yet.
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=== Version History
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* Revision 1, 2017-07-17 (Daniel Koch)
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- Internal revisions
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