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Change log for September 5, 2017 Vulkan 1.0.60 spec update:
* Bump API patch number and header version number to 60 for this update.
Github Issues:
* Document that <<queries-timestamps, Timestamp Queries>> can only be
meaningfully compared when they are written from the same queue (public
issue 216).
* Document that the `<extension>` tag `type` attribute is required for
non-disabled extensions (derived from, but does not close public issue
354).
* Clean up registry schema length attribute descriptions to be consistent
and correct (public issue 555).
Internal Issues:
* Replace as much of the hand-written extension appendix metadata as
possible with asciidoc includes generated from corresponding attributes
of +vk.xml+, and enhance the style guide to match. This avoids
inconsistencies between +vk.xml+ and the appendices, and produces a more
uniform style (internal issue 137).
* Remove the generated extDependency.{py,sh} files from the tree and
create them dynamically on demand instead, reducing merge conflicts
(internal issue 713).
* Add a prototype tool for generating in-place difference markup for
sections guarded by asciidoc conditionals, and new syntax for open
blocks to support it (internal issue 833).
* Remove unnecessary restriction of etext:*SYNC_FD_BIT_KHR external handle
types to the same physical device in the
slink:VkPhysicalDeviceIDPropertiesKHR,
flink:VkImportMemoryWin32HandleInfoKHR,
slink:VkImportFenceWin32HandleInfoKHR, slink:VkImportFenceFdInfoKHR,
slink:VkImportSemaphoreWin32HandleInfoKHR,
slink:VkImportSemaphoreFdInfoKHR
<<external-memory-handle-types-compatibility, External memory handle
types compatibility>>, <<external-semaphore-handle-types-compatibility,
External semaphore handle types compatibility>>, and
<<external-fence-handle-types-compatibility, External fence handle types
compatibility>> sections (internal issue 956).
Other Issues:
* Remove dependency of +VK_KHX_device_group+ on +VK_KHR_swapchain+ (there
is an interaction, but not a strict dependency), and add a new
`extension` attribute to the `<require` XML tag to allow classifying a
subset of interfaces of an extension as requiring another extension.
Update the registry schema and documentation accordingly.
New Extensions:
* `VK_AMD_shader_fragment_mask` (and related `GL_AMD_shader_fragment_mask`
GLSL extension)
* `VK_EXT_sample_locations`
* `VK_EXT_validation_cache`- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| Name | ||
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| AMD_shader_fragment_mask | ||
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| Name Strings | ||
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| GL_AMD_shader_fragment_mask | ||
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| Contact | ||
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| Aaron Hagan, AMD (aaron.hagan 'at' amd.com) | ||
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| Contributors | ||
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| Aaron Hagan, AMD | ||
| Timothy Lottes, AMD | ||
| Daniel Rakos, AMD | ||
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| Status | ||
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| Pending | ||
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| Version | ||
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| Last Modified Date: 08/07/2017 | ||
| Author Revision: 2 | ||
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| Number | ||
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| TBD | ||
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| Dependencies | ||
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| This extension is written against the OpenGL Shading Language | ||
| Specification, Version 4.50. | ||
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| Overview | ||
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| This extension introduces new GLSL built-in functions enabling more | ||
| efficient read access to fragment mask compressed multisampled color | ||
| images. Implementations supporting this extension can avoid storing | ||
| identical sample color values inside a single pixel. This is achieved | ||
| by introducing the concept of color fragments and fragment masks. | ||
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| Color fragments are storage units inside a single pixel of a multisampled | ||
| color image that can hold a unique color value. Each pixel then has a | ||
| fragment mask which contains per sample indices that map a given color | ||
| sample to a particular color fragment. | ||
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| This extension enables fetching the fragment mask and individual color | ||
| fragments from a multisampled color image. | ||
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| IP Status | ||
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| None. | ||
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| New Procedures and Functions | ||
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| None. | ||
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| New Tokens | ||
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| None. | ||
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| Modifications to the OpenGL Shading Language Specification, Version 4.50 | ||
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| Including the following line in a shader can be used to control the | ||
| language features described in this extension: | ||
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| #extension GL_AMD_shader_fmask : <behavior> | ||
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| where <behavior> is as specified in section 3.3. | ||
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| New preprocessor #defines are added to the OpenGL Shading Language: | ||
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| #define GL_AMD_shader_fragement_mask 1 | ||
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| Additions to Chapter 8 of the OpenGL Shading Language (GLSL) Specification, | ||
| version 4.30 (Built-in functions) | ||
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| Add to the table of functions 8.9.2, "Texel Lookup Functions", p. 164 | ||
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| +-----------------------------------+-------------------------------------+ | ||
| | Syntax | Description | | ||
| +-----------------------------------+-------------------------------------+ | ||
| | uint fragmentMaskFetchAMD( | Returns the fragment mask from a | | ||
| | gsampler2DMS sampler, | multisampled color image. The | | ||
| | ivec2 P) | fragment mask is a single uint where| | ||
| | | each subsequent 4 bit specifies the | | ||
| | uint fragmentMaskFetchAMD( | color fragment index corresponding | | ||
| | gsampler2DMSArray sampler, | to the color sample, starting from | | ||
| | ivec3 P) | the least significant bit. | | ||
| | | | | ||
| | uint fragmentMaskFetchAMD( | | | ||
| | gsubpassInputMS subpass) | | | ||
| +-----------------------------------+-------------------------------------+ | ||
| | gvec4 fragmentFetchAMD( | Fetches a color fragment with a | | ||
| | gsampler2DMS sampler, | correspoding fragment mask value. | | ||
| | ivec2 P, | | | ||
| | uint fragIndex) | | | ||
| | | | | ||
| | gvec4 fragmentFetchAMD( | | | ||
| | gsampler2DMSArray sampler, | | | ||
| | ivec3 P, | | | ||
| | uint fragIndex)| | | ||
| | | | | ||
| | gvec4 fragmentFetchAMD( | | | ||
| | gsubpassInputMS subpass, | | | ||
| | uint fragIndex) | | | ||
| +-----------------------------------+-------------------------------------+ | ||
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| Additions to the AGL/GLX/WGL Specifications | ||
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| None. | ||
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| GLX Protocol | ||
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| None. | ||
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| Errors | ||
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| None. | ||
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| Issues | ||
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| Revision History | ||
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| Rev. Date Author Changes | ||
| ---- ---------- -------- ----------------------------------------------- | ||
| 2 08/07/2017 ahagan Cleanup and prepared for posting. | ||
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| 1 04/24/2017 ahagan Initial draft. |
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