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Vulkan-Docs/appendices/VK_KHR_8bit_storage.txt

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Change log for January 05, 2019 Vulkan 1.1.97 spec update: * Update release number to 97. Public Issues: * Add a special case to the <<renderpass-compatibility, Render Pass Compatibility>> rules allowing single-subpass renderpasses to be compatible even if they have different resolve attachment references (public issue 835). * Fix the miss shader binding table record address rule in the <<shader-binding-table-indexing-rules, Miss Shaders>> section to index by code:missIndex, not code:sbtOffset (public issue 875). Internal Issues: * Add a missing anchor to the elink:VkSamplerCreateFlagBits language (internal issue 1483). * Add missing implicit valid usage include for slink:VkHdrMetadataEXT and corresponding `noautovalidity` attributes in `vk.xml` for the externally-defined metadata properties (internal issue 1514). * Remove restrictions on the `mask` parameter of SPIR-V's code:OpGroupNonUniformXor in the <<spirvenv-module-validation, Validation Rules within a Module>> appendix (internal merge request 2971). * Restore `noautovalidity` attribute for slink:VkPipelineViewportWScalingStateCreateInfoNV::pname:pViewportWScalings in `vk.xml` (internal merge request 2975). * Update copyright dates on Khronos-copyrighted files to 2019 (internal merge request 2980). New Extensions: * `VK_KHR_depth_stencil_resolve` * `VK_EXT_buffer_device_address` * `VK_EXT_memory_budget` * `VK_EXT_memory_priority` * `VK_EXT_validation_features`
2019-01-06 03:40:12 +00:00
// Copyright (c) 2017-2019 Khronos Group. This work is licensed under a
Change log for July 7, 2018 Vulkan 1.1.80 spec update: * Update release number to 80. Public Issues: * Remove unused "`API Order`" term from glossary (public issue 657). * Dynamically generate the extension appendix includes based on information in `vk.xml`, including new metadata tags describing deprecated, obsoleted, and promoted extensions (public pull request 690). Internal Issues: * Add valid usage statements to flink:vkCmdBindDescriptorSets to keep offsets + range less than or equal to the buffer size (internal issue 1174). New Extensions: * `VK_EXT_conditional_render` * `VK_KHR_create_renderpass2` (public issue 736) * `VK_KHR_8bit_storage` (public issue 737)
2018-07-07 09:21:56 +00:00
// Creative Commons Attribution 4.0 International License; see
// http://creativecommons.org/licenses/by/4.0/
include::meta/VK_KHR_8bit_storage.txt[]
*Last Modified Date*::
2018-02-05
*IP Status*::
No known IP claims.
*Interactions and External Dependencies*::
- This extension requires
Change log for January 13, 2019 Vulkan 1.1.98 spec update: * Update release number to 98. Public Issues: * Fix missing markup in flink:vkDestroyPipelineLayout valid usage statement (pull request 882). * Add missing contributors for `<<VK_EXT_buffer_device_address>>` (public pull request 891). Internal Issues: * Detect nested bullet points in valid usage blocks and warn about them during VUID assignment (internal issue 1382). * Update the style guide to document the process for reserving new bits in bitmask types (internal issue 1411). * Clarify for slink:VkApplicationInfo::pname:apiVersion and in the <<fundamentals-validusage-versions, Valid Usage for Newer Core Versions>> section when it is valid for an application to use a certain version of Vulkan API functionality (for an instance and for a device/physical device); and when the validation layers must generate an error (internal issue 1412). * Add optional <<memory-model-availability-visibility, transitive availability/visibility operations to the memory model, including a new pname:vulkanMemoryModelAvailabilityVisibilityChains feature for slink:VkPhysicalDeviceVulkanMemoryModelFeaturesKHR (internal issue 1460). * Add the code:StorageBuffer storage class to those in the <<interfaces-resources-descset, Descriptor Set Interface>> (internal issue 1480). * Add missing `returnedonly` tags for a number of returned extension structures that can be passed in pname:pNext chains (internal issue 1515). * Clean up and rearrange some spec language for slink:VkRenderPassCreateInfo and slink:VkAttachmentReference.txt (internal issue 1522). * Correctly round the code:OpVectorTimesScalar and code:OpMatrixTimesScalar SPIR-V operations in the <<Precision of core SPIR-V Instructions>> table (internal merge request 2996). * Work around cases in flink:vkCmdBeginTransformFeedbackEXT, flink:vkCmdEndTransformFeedbackEXT, and slink:VkPipelineCoverageModulationStateCreateInfoNV where an array parameter is `optional` but the length is not in `vk.xml`. This is an interim fix using `noautovalidity` + handcoded VU replacing those that should be autogenerated (internal issue 2944 and https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/480). * Remove redundant capability validation of the code:float16 and code:int8 SPIR-V capabilities from the <<spirvenv-capabilities, Capabilities>> section, since they are already covered in the preceding table. * Update check_spec_links script, including validation for reference page open blocks. Fix errors identified by the script.
2019-01-13 13:53:27 +00:00
https://www.khronos.org/registry/spir-v/extensions/KHR/SPV_KHR_8bit_storage.html[`SPV_KHR_8bit_storage`]
Change log for July 7, 2018 Vulkan 1.1.80 spec update: * Update release number to 80. Public Issues: * Remove unused "`API Order`" term from glossary (public issue 657). * Dynamically generate the extension appendix includes based on information in `vk.xml`, including new metadata tags describing deprecated, obsoleted, and promoted extensions (public pull request 690). Internal Issues: * Add valid usage statements to flink:vkCmdBindDescriptorSets to keep offsets + range less than or equal to the buffer size (internal issue 1174). New Extensions: * `VK_EXT_conditional_render` * `VK_KHR_create_renderpass2` (public issue 736) * `VK_KHR_8bit_storage` (public issue 737)
2018-07-07 09:21:56 +00:00
*Contributors*::
- Alexander Galazin, Arm
(The previous commit didn't actually include internal gitlab changes since 1.1.89; fixed now). Change log for October 28, 2018 Vulkan 1.1.90 spec update: * Update release number to 90. Public Issues: * Tag flink:vkQueueWaitIdle as `externsync` in `vk.xml` (public pull request 815). * Update README (public pull request 834). * `VK_NV_framebuffer_mixed_samples` and `VK_AMD_mixed_attachment_samples` had confusing and contradictory valid usage statements when read in the all-extensions spec build. Change them to explicitly mention which extension each is for (public issue Vulkan-ValidationLayers/issues/353). Internal Issues: * Update `COPYING.md` to clarify how externally generated Vulkan Specifications (for translations, annotations, or other reasons) must be copyrighted, and acknowledge the Exception Clause on the `vk.xml` license (internal issue 1079). * Specify that flink:vkGetPhysicalDeviceImageFormatProperties may: return pname:maxMipLevels 1 if the format is ycbcr (internal issue 1361). * Clarify previously underspecified language for flink:vkCmdPushConstants::pname:pStageFlags regarding use of push constants across multiple pipelines (internal issue 1403). * Fix typo in XML/headers for ename:VK_STRUCTURE_TYPE_IMAGE_DRM_FORMAT_MODIFIER_EXPLICIT_CREATE_INFO_EXT, which was previously etext:VK_STRUCTURE_TYPE_IMAGE_EXCPLICIT_DRM_FORMAT_MODIFIER_CREATE_INFO_EXT (internal issue 1428). * Fix markup of equations that were sporadically breaking the `optimize-pdf` step of PDF generation, due (apparently) to inconsistent treatment of unwrapped multicharacter terms by different LaTeX parsers (internal issue 1435). * For the <<memory-model-synchronizes-with synchronizes-with>> memory model relation cases involving a release barrier plus relaxed atomic write, treat the atomic as if it were a release atomic and allow the acquire side to read from its hypothetical release sequence. This is more consistent with how C++ defines synchronization for release fences (internal issue cross-api/memory-model#72). * Minor editorial changes to the <<memory-model, memory model>> appendix based on external feedback.
2018-10-29 06:53:18 +00:00
The `VK_KHR_8bit_storage` extension allows use of 8-bit types in uniform and
Change log for July 7, 2018 Vulkan 1.1.80 spec update: * Update release number to 80. Public Issues: * Remove unused "`API Order`" term from glossary (public issue 657). * Dynamically generate the extension appendix includes based on information in `vk.xml`, including new metadata tags describing deprecated, obsoleted, and promoted extensions (public pull request 690). Internal Issues: * Add valid usage statements to flink:vkCmdBindDescriptorSets to keep offsets + range less than or equal to the buffer size (internal issue 1174). New Extensions: * `VK_EXT_conditional_render` * `VK_KHR_create_renderpass2` (public issue 736) * `VK_KHR_8bit_storage` (public issue 737)
2018-07-07 09:21:56 +00:00
storage buffers, and push constant blocks.
This extension introduces several new optional features which map to SPIR-V
capabilities and allow access to 8-bit data in code:Block-decorated objects
in the code:Uniform and the code:StorageBuffer storage classes, and objects
in the code:PushConstant storage class.
The code:StorageBuffer8BitAccess capability must: be supported by all
implementations of this extension.
The other capabilities are optional.
=== New Enum Constants
* Extending elink:VkStructureType:
** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_8BIT_STORAGE_FEATURES_KHR
=== New Structures
* slink:VkPhysicalDevice8BitStorageFeaturesKHR
=== New SPIR-V Capabilities
* <<spirvenv-capabilities-table-8bitstorage,code:StorageBuffer8BitAccess>>
* <<spirvenv-capabilities-table-8bitstorage,code:UniformAndStorageBuffer8BitAccess>>
* <<spirvenv-capabilities-table-8bitstorage,code:StoragePushConstant8>>
=== Issues
=== Version History
* Revision 1, 2018-02-05 (Alexander Galazin)
- Initial draft