Vulkan-Docs/appendices/VK_EXT_scalar_block_layout.txt
Jon Leech 256a1ef661 Change log for November 18, 2018 Vulkan 1.1.93 spec update:
* Update release number to 93.

Public Issues:

  * Add spec language for ename:VK_INDEX_TYPE_NONE_NV and fix up
    slink:VkAccelerationStructureTypeNV (public issue 848).
  * Add missing suffix in description of slink:VkSubpassDescription2KHR
    parameters (public pull request 851).
  * Fix miscellaneous typos (public pull request 855).
  * Add driver ID for Pastel (public pull request 856).
  * Add missing include directive for slink:VkMemoryWin32HandlePropertiesKHR
    implicit valid usage statements (public pull request 857).

Internal Issues:

  * Restrict the storage classes permitted for SPIR-V atomics to what is
    actually supported, in the <<spirvenv-module-validation, Validation
    Rules within a Module>> section (internal issue 1123).
  * Add a missing Valid Usage statement to slink:VkRenderPassCreateInfo for
    the case pname:stencilLoadOp == ename:VK_LOAD_OP_CLEAR, pname:layout ==
    ename:VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL (internal issue
    1408).
  * Modify optimize-pdf script and Makefile to retain non-optimized original
    PDF on errors (internal issue 1435).
  * Add <<spirvenv-module-validation, SPIR-V validation rules>> stating that
    only the listed code:BuiltIn decorations are permitted, and only when
    relevante features and extensions are enabled (internal issue 1449).
  * Remove some duplicated Valid Usage IDs created via cut & paste error
    (internal issue 1455).
  * Build HTML output for extension reference pages (internal issue 1461).
  ** Improve genRef.py handling of aliases defined inside other refpages.
  ** Emit aliases in pygenerator.py.
  ** Add XML noautovalidity flag for VkRenderPassCreateFlags until there
     are some corresponding FlagBits defined.
  ** Corrected types= attribute on some refpage blocks to 'flags'
  ** Added refpage blocks for some missing types detected by CI tests.
  * Fixed many Valid Usage statement issues in slink:VkRenderPassCreateInfo,
    slink:VkSubpassDescription, slink:VkSubpassDescription2KHR,
    slink:VkSubpassDependency2KHR, flink:vkCmdBeginRenderPass,
    flink:vkCmdBeginRenderPass2KHR, and slink:VkRenderPassBeginInfo
    discovered while adding `VK_KHR_create_renderpass2` to the validation
    layers.

New Extensions:

  * `VK_EXT_scalar_block_layout`
  * `VK_EXT_separate_stencil_usage`
2018-11-18 02:55:14 -08:00

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// Copyright (c) 2017-2018 Khronos Group. This work is licensed under a
// Creative Commons Attribution 4.0 International License; see
// http://creativecommons.org/licenses/by/4.0/
include::meta/VK_EXT_scalar_block_layout.txt[]
*Last Modified Date*::
2018-11-14
*Contributors*::
- Jeff Bolz
- Jan-Harald Fredriksen
- Graeme Leese
- Jason Ekstrand
- John Kessenich
=== Short Description
Enables C-like structure layout for SPIR-V blocks.
=== Description
This extension modifies the alignment rules for uniform buffers, storage
buffers and push constants, allowing non-scalar types to be aligned solely
based on the size of their components, without additional requirements.
=== New Enum Constants
* Extending elink:VkStructureType:
** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SCALAR_BLOCK_LAYOUT_FEATURES_EXT
=== New Structures
* slink:VkPhysicalDeviceScalarBlockLayoutFeaturesEXT
=== Issues
None.
=== Version History
* Revision 1, 2018-11-14 (Tobias Hector)
- Initial draft