mirror of
https://github.com/status-im/Vulkan-Docs.git
synced 2025-02-18 17:28:16 +00:00
56e0289318
* 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`
104 lines
3.0 KiB
Plaintext
104 lines
3.0 KiB
Plaintext
// Copyright (c) 2014-2019 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_KHR_incremental_present.txt[]
|
|
|
|
*Last Modified Date*::
|
|
2016-11-02
|
|
*IP Status*::
|
|
No known IP claims.
|
|
*Contributors*::
|
|
- Ian Elliott, Google
|
|
- Jesse Hall, Google
|
|
- Alon Or-bach, Samsung
|
|
- James Jones, NVIDIA
|
|
- Daniel Rakos, AMD
|
|
- Ray Smith, ARM
|
|
- Mika Isojarvi, Google
|
|
- Jeff Juliano, NVIDIA
|
|
- Jeff Bolz, NVIDIA
|
|
|
|
This device extension extends flink:vkQueuePresentKHR, from the
|
|
`<<VK_KHR_swapchain>>` extension, allowing an application to specify a list
|
|
of rectangular, modified regions of each image to present.
|
|
This should be used in situations where an application is only changing a
|
|
small portion of the presentable images within a swapchain, since it enables
|
|
the presentation engine to avoid wasting time presenting parts of the
|
|
surface that haven't changed.
|
|
|
|
This extension is leveraged from the +EGL_KHR_swap_buffers_with_damage+
|
|
extension.
|
|
|
|
=== New Object Types
|
|
|
|
None.
|
|
|
|
=== New Enum Constants
|
|
|
|
* Extending elink:VkStructureType:
|
|
** ename:VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR
|
|
|
|
=== New Enums
|
|
|
|
None.
|
|
|
|
=== New Structures
|
|
|
|
* slink:VkRectLayerKHR
|
|
* slink:VkPresentRegionKHR
|
|
* slink:VkPresentRegionsKHR
|
|
|
|
=== New Functions
|
|
|
|
None.
|
|
|
|
=== Examples
|
|
|
|
None.
|
|
|
|
=== Issues
|
|
|
|
1) How should we handle steroescopic-3D swapchains? We need to add a layer
|
|
for each rectangle.
|
|
One approach is to create another struct that contains the slink:VkRect2D
|
|
plus layer, and have slink:VkPresentRegionsKHR point to an array of that
|
|
struct.
|
|
Another approach is to have two parallel arrays, ptext:pRectangles and
|
|
ptext:pLayers, where ptext:pRectangles[i] and ptext:pLayers[i] must be used
|
|
together.
|
|
Which approach should we use, and if the array of a new structure, what
|
|
should that be called?
|
|
|
|
*RESOLVED*: Create a new structure, which is a slink:VkRect2D plus a layer,
|
|
and will be called slink:VkRectLayerKHR.
|
|
|
|
2) Where is the origin of the slink:VkRectLayerKHR?
|
|
|
|
*RESOLVED*: The upper left corner of the presentable image(s) of the
|
|
swapchain, per the definition of framebuffer coordinates.
|
|
|
|
3) Does the rectangular region, slink:VkRectLayerKHR, specify pixels of the
|
|
swapchain's image(s), or of the surface?
|
|
|
|
*RESOLVED*: Of the image(s).
|
|
Some presentation engines may scale the pixels of a swapchain's image(s) to
|
|
the size of the surface.
|
|
The size of the swapchain's image(s) will be consistent, where the size of
|
|
the surface may vary over time.
|
|
|
|
4) What if all of the rectangles for a given swapchain contain a width
|
|
and/or height of zero?
|
|
|
|
*RESOLVED*: The application is indicating that no pixels changed since the
|
|
last present.
|
|
The presentation engine may use such a hint and not update any pixels for
|
|
the swapchain.
|
|
However, all other semantics of flink:vkQueuePresentKHR must still be
|
|
honored, including waiting for semaphores to signal.
|
|
|
|
=== Version History
|
|
|
|
* Revision 1, 2016-11-02 (Ian Elliott)
|
|
- Internal revisions
|