mirror of
https://github.com/status-im/Vulkan-Docs.git
synced 2025-01-27 14:45:55 +00:00
0cc6bba634
* Bump API patch number and header version number to 61 for this update.
Github Issues:
* Provide alternate length attributes (altlen=) in the XML schema, for
those using length attributes to generate code instead of documentation
(public issue 555).
* Fix erroneous references to `latex:` being used for asciidoc math
markup, rather than `latexmath:` (public pull request 556).
* Add author ID to XML for Kazan software renderer (public pull request
557).
Internal Issues:
* Add the <<fundamentals-abi,Application Binary Interface>> section
describing platform ABI requirements and recommendations, add examples
of function and function pointer declarations to the
<<boilerplate-platform-specific-calling-conventions, Platform-Specific
Calling Conventions>> section, and remove related language that existed
elsewhere in the specification (internal issue 64).
* Describe where to document valid usage interactions of chained
structures in the style guide, and fix one case now appearing in
slink:VkBufferCreateInfo instead of the child
slink:VkDedicatedAllocationBufferCreateInfoNV structure (internal issue
715).
* Add example to the style guide of describing enumerated types which are
empty when the spec is built without relevant extensions enabled, and
apply it to existing examples for
elink:VkDescriptorSetLayoutCreateFlagBits and
elink:VkSubpassDescriptionFlagBits (internal issue 864).
* Add a note to the <<fundamentals-validusage-enums, Valid Usage for
Enumerated Types>> section that the special values suffixed with
etext:_BEGIN_RANGE, etext:_END_RANGE, etext:_RANGE_SIZE and
etext:_MAX_ENUM are not part of the API and should: not be used by
applications (internal issue 872).
* Added note to flink:vkCmdUpdateBuffers explaining the performance
penalty for copies done in this way, and why the upper copy limit is
what it is (internal issue 952).
* Update `VK_KHX_device_group` to split some functionality into the new
`VK_KHR_bind_memory2` extension, and rename that functionality (internal
issue 969).
* Remove *Status* fields from extension appendices, since they are by
definition published and complete by the time they reach the public
github repository (internal issue 973).
Other Issues:
* Update Data Format specification dependency to version 1.2 and change
references to DF sections accordingly.
* Update XML to make the pname:pAllocator parameter of
flink:vkRegisterDeviceEventEXT and flink:vkRegisterDisplayEventEXT in
the `VK_EXT_display_control` extension as optional.
New Extensions:
* `VK_KHR_bind_memory2`
* `VK_KHR_image_format_list`
* `VK_KHR_maintenance2`
* `VK_KHR_sampler_ycbcr_conversion`
109 lines
3.6 KiB
Plaintext
109 lines
3.6 KiB
Plaintext
include::meta/VK_EXT_shader_subgroup_ballot.txt[]
|
|
|
|
*Last Modified Date*::
|
|
2016-11-28
|
|
*IP Status*::
|
|
No known IP claims.
|
|
*Interactions and External Dependencies*::
|
|
- This extension requires the
|
|
https://www.khronos.org/registry/spir-v/extensions/KHR/SPV_KHR_shader_ballot.html[+SPV_KHR_shader_ballot+]
|
|
SPIR-V extension.
|
|
- This extension requires the
|
|
https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_shader_ballot.txt[+GL_ARB_shader_ballot+]
|
|
extension for GLSL source languages.
|
|
*Contributors*::
|
|
- Jeff Bolz, NVIDIA
|
|
- Neil Henning, Codeplay
|
|
- Daniel Koch, NVIDIA Corporation
|
|
|
|
This extension adds support for the following SPIR-V extension in Vulkan:
|
|
|
|
* +SPV_KHR_shader_ballot+
|
|
|
|
This extension provides the ability for a group of invocations, which
|
|
execute in parallel, to do limited forms of cross-invocation communication
|
|
via a group broadcast of a invocation value, or broadcast of a bitarray
|
|
representing a predicate value from each invocation in the group.
|
|
|
|
This extension provides access to a number of additional built-in shader
|
|
variables in Vulkan:
|
|
|
|
* code:SubgroupEqMaskKHR, which contains the subgroup mask of the current
|
|
subgroup invocation,
|
|
* code:SubgroupGeMaskKHR, which contains the subgroup mask of the
|
|
invocations greater than or equal to the current invocation,
|
|
* code:SubgroupGtMaskKHR, which contains the subgroup mask of the
|
|
invocations greater than the current invocation,
|
|
* code:SubgroupLeMaskKHR, which contains the subgroup mask of the
|
|
invocations less than or equal to the current invocation,
|
|
* code:SubgroupLtMaskKHR, which contains the subgroup mask of the
|
|
invocations less than the current invocation,
|
|
* code:SubgroupLocalInvocationId, which contains the index of an
|
|
invocation within a subgroup, and
|
|
* code:SubgroupSize, which contains the maximum number of invocations in a
|
|
subgroup.
|
|
|
|
Additionally, this extension provides access to the new SPIR-V instructions:
|
|
|
|
* code:OpSubgroupBallotKHR,
|
|
* code:OpSubgroupFirstInvocationKHR, and
|
|
* code:OpSubgroupReadInvocationKHR,
|
|
|
|
When using GLSL source-based shader languages, the following variables and
|
|
shader functions from GL_ARB_shader_ballot can map to these SPIR-V built-in
|
|
decorations and instructions:
|
|
|
|
* in uint64_t gl_SubGroupEqMaskARB; -> code:SubgroupEqMaskKHR,
|
|
* in uint64_t gl_SubGroupGeMaskARB; -> code:SubgroupGeMaskKHR,
|
|
* in uint64_t gl_SubGroupGtMaskARB; -> code:SubgroupGtMaskKHR,
|
|
* in uint64_t gl_SubGroupLeMaskARB; -> code:SubgroupLeMaskKHR,
|
|
* in uint64_t gl_SubGroupLtMaskARB; -> code:SubgroupLtMaskKHR,
|
|
* in uint gl_SubGroupInvocationARB; -> code:SubgroupLocalInvocationId,
|
|
* uniform uint gl_SubGroupSizeARB; -> code:SubgroupSize,
|
|
* ballotARB() -> code:OpSubgroupBallotKHR,
|
|
* readFirstInvocationARB() -> code:OpSubgroupFirstInvocationKHR, and
|
|
* readInvocationARB() -> code:OpSubgroupReadInvocationKHR.
|
|
|
|
=== New Object Types
|
|
|
|
None.
|
|
|
|
=== New Enum Constants
|
|
|
|
None.
|
|
|
|
=== New Enums
|
|
|
|
None.
|
|
|
|
=== New Structures
|
|
|
|
None.
|
|
|
|
=== New Functions
|
|
|
|
None.
|
|
|
|
=== New Built-In Variables
|
|
|
|
* <<interfaces-builtin-variables-sgeq,code:SubgroupEqMaskKHR>>
|
|
* <<interfaces-builtin-variables-sgge,code:SubgroupGeMaskKHR>>
|
|
* <<interfaces-builtin-variables-sggt,code:SubgroupGtMaskKHR>>
|
|
* <<interfaces-builtin-variables-sgle,code:SubgroupLeMaskKHR>>
|
|
* <<interfaces-builtin-variables-sglt,code:SubgroupLtMaskKHR>>
|
|
* <<interfaces-builtin-variables-sgli,code:SubgroupLocalInvocationId>>
|
|
* <<interfaces-builtin-variables-sgs,code:SubgroupSize>>
|
|
|
|
=== New SPIR-V Capabilities
|
|
|
|
* <<spirvenv-capabilities-table-subgroupballot,SubgroupBallotKHR>>
|
|
|
|
=== Issues
|
|
|
|
None.
|
|
|
|
=== Version History
|
|
|
|
* Revision 1, 2016-11-28 (Daniel Koch)
|
|
- Initial draft
|