Jon Leech 52d809dd04 Change log for October 13, 2017 Vulkan 1.0.63 spec update:
* Bump API patch number and header version number to 63 for this update.

Github Issues:

  * Add missing valid usage statements for ptext:maxDescriptorSets*,
    ptext:maxPerStageDescriptorInputAttachments, and
    ptext:maxPerStageResources to slink:VkPipelineLayoutCreateInfo.txt,
    flink:VkComputePipelineCreateInfo, and
    flink:VkGraphicsPipelineCreateInfo (public issue 546).
  * Fix typos in ftext:vkCmdDraw*AMD descriptions (public pull request 549).
  * Fixed flink:vkCmdWriteTimestamp so it is not unnecessarily restricted to
    queues supporting graphics or compute operations (public issue 558).
  * Improvements to valid usage generator for output `*Flags` pointer
    parameters and for some `void *` parameters (public pull requests 560,
    562).
  * Document `altlen` attribute in XML schema as valid C99 syntax and tweak
    `vk.xml` to match (public pull request 566).
  * Clarify when pname:fence is signaled by flink:vkQueueSubmit in a more
    obvious place (public issue 577).

Internal Issues:

  * Specify a whitelist of supported SPIR-V Storage Classes in the
    <<spirvenv-module-validation, Validation Rules within a Module>>
    appendix (internal SPIR-V issue 166).
  * Relax the shared semaphore wait timeout requirement in the
    <<synchronization-semaphores-importing, Importing Semaphore Payloads>>
    section (internal issue 820).
  * Update the <<textures-image-level-selection, Image Level(s) Selection>>
    equations so that the parameters returned by the level-of-detail query
    appear explicitly, also fixing the issue that linear filtering would
    select a level below the base level for magnification (internal issue
    926).
  * Disallow creation of a swapchain with zero pname:imageExtent in
    slink:VkSurfaceCapabilitiesKHR and slink:VkSwapchainCreateInfoKHR
    (internal issue 1020).

Other Issues:

  * Clarify in <<textures-operation-validation,Image View Validation>> that
    the layout of subresources in an image view must have a layout that
    matches that written into the descriptor, and that this section is about
    validating image views, not images.

New Extensions:

  * `VK_EXT_global_priority`
2017-10-12 19:57:47 -07:00

Vulkan^(R)^ API Documentation Project
=====================================

This repository contains formal documentation of the Vulkan API. This
includes the main API Specification, the reference (man) pages, the XML API
Registry, and related tools and scripts.

Single-Branch Model
-------------------

As of the 1.0.25 release, we have switched to a new "`single-branch`" model
in which all extensions are included in the source of the 1.0 branch of the
Specification, and can be configured in or out of the build using Makefile
options.

Repository Structure
--------------------

```
README.adoc             This file
ChangeLog.txt           Change log summary for each public spec update
doc/specs/              Main documentation tree
    vulkan/             Vulkan specification
        appendices/     Appendices - one file each
        chapters/       Chapters - one file each
        config/         asciidoc configuration
        images/         Images (figures, diagrams, icons)
        man/            Reference (manual) pages for API, mostly extracted from the spec source
    misc/               Related specifications (GL_KHR_vulkan_glsl)
src/spec/               XML API Registry (vk.xml) and related scripts
src/vulkan/             Vulkan headers, generated from the Registry
```

Building the Specification and Reference Pages
----------------------------------------------

As of the 1.0.40 release, we have moved from the old `asciidoc` toolchain to
a new one based on `asciidoctor`. See `doc/specs/vulkan/README.adoc` for
more information on installing the toolchain and building the Specification.

Generating Headers and Related Files
------------------------------------

The header file (`src/vulkan/vulkan.h`) and many parts of the specification
and reference page documents are generated from descriptions in the XML API
Registry (`src/spec/vk.xml`). The generated files, with the exception of
`vulkan.h`, are not checked into the repository. If you change `vk.xml`, you
can regenerate the header by going to `src/spec` and running:

    $ make clobber install

The other generated files are built as required via dependencies in
`doc/specs/vulkan/Makefile` .
Description
The Vulkan API Specification and related tools
Readme
Languages
JavaScript 59.4%
Python 32.6%
CSS 3.1%
Ruby 2%
Makefile 1.1%
Other 1.7%