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8897c572ce
* Update release number to 113.
Github Issues:
* Fix typo in `<<VK_EXT_global_priority>>` appendix (public issue 979).
Internal Issues:
* Expand the explanation of
slink:VkSamplerYcbcrConversionImageFormatPropertiesKHR::pname:combinedImageSamplerDescriptorCount,
and explain how it interacts with slink:VkWriteDescriptorSet,
slink:VkDescriptorSetLayoutBinding::pname:descriptorCount, and
slink:VkDescriptorPoolSize::pname:descriptorCount (internal issue 1643).
* Clarify restrictions on components for code:OpImageGather in the
<<spirvenv-module-validation, Validation Rules within a Module>> section
(internal issue 1707).
* Clarify the descriptions of <<limits-computeUnitsPerShaderArray,
pname:computeUnitsPerShaderArray>> and <<limits-wavefrontSize,
pname:wavefrontSize>> fields in
slink:VkPhysicalDeviceShaderCorePropertiesAMD.
New Extensions:
* `<<VK_EXT_texel_buffer_alignment>>`
* `<<VK_EXT_shader_demote_to_helper_invocation>>`
57 lines
1.2 KiB
Plaintext
57 lines
1.2 KiB
Plaintext
include::meta/VK_EXT_shader_demote_to_helper_invocation.txt[]
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*Last Modified Date*::
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2019-06-01
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*IP Status*::
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No known IP claims.
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*Contributors*::
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- Jeff Bolz, NVIDIA
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This extension adds Vulkan support for the
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`SPV_EXT_demote_to_helper_invocation` SPIR-V extension.
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That SPIR-V extension provides a new instruction
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code:OpDemoteToHelperInvocationEXT allowing shaders to "demote" a fragment
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shader invocation to behave like a helper invocation for its duration.
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The demoted invocation will have no further side effects and will not output
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to the framebuffer, but remains active and can participate in computing
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derivatives and in subgroup operations.
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This is a better match for the "discard" instruction in HLSL.
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=== New Object Types
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None.
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=== New Enum Constants
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* Extending elink:VkStructureType:
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** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_DEMOTE_TO_HELPER_INVOCATION_FEATURES_EXT
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=== New Enums
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None.
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=== New Structures
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* slink:VkPhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT
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=== New Functions
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None.
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=== New SPIR-V Capability
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* <<spirvenv-capabilities-table-demote,DemoteToHelperInvocationEXT>>
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=== Issues
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None.
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=== Examples
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None.
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=== Version History
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* Revision 1, 2019-06-01 (Jeff Bolz)
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- Initial draft
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