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b9e9296cd8
* Bump API patch number and header version number to 53 for this update.
Github Issues:
Internal Issues:
* Clarify mappings of coordinates for mutable, compatible image views in
slink:VkImageViewCreateInfo (internal issue 815).
* Make ename:VK_BIND_SFR_BIT require a logical device with multiple
physical devices, so that standard sparse image block dimensions are
only required on systems that support multi-GPU (internal issue 835).
* Convert all files from use of // refBegin .. // refEnd comments to
delimit ref pages, to use of open blocks, and update style guide
accordingly (internal issue 839).
* Add valid usage for slink:VkWriteDescriptorSet when performing updates
to a ename:VK_STORAGE_IMAGE descriptor with layout
ename:VK_IMAGE_LAYOUT_GENERAL.
* Add a hack to the validity generator script to support an odd
interaction between flink:vkCmdFillBuffer and an extension (internal
issue 853).
* Remove redundant text describing slink:VkBufferCreateInfo::pname:usage,
which was already covered by implicit valid usage (internal issue 854).
* Update implicit validity generator script to properly handle the
pname:sType and pname:pNext members of "returnedonly" structures
(internal issue 874).
* Note that slink:VkApplicationInfo::pname:pApplicationName &
slink:VkApplicationInfo::pname:pEngineName are optional, and add missing
implicit valid usage statements for flink:vkDestroyInstance.
* Added missing valid usage for flink:vkCmdWriteTimestamp to require a
timestamp query pool.
* Simplify and/or split "`non-atomic`" valid usage statements.
New Extensions:
* `VK_AMD_gpu_shader_int16`
* `VK_EXT_blend_operation_advanced`
* `VK_EXT_sampler_filter_minmax`
* `VK_NV_framebuffer_mixed_samples`
-----------------------------------------------------
Note: the 1.0.52 spec wasn't published on github, so the 1.0.53 release
combines both change sets.
-----------------------------------------------------
Change log for June 13, 2017 Vulkan 1.0.52 spec update:
* Bump API patch number and header version number to 52 for this update.
Github Issues:
Internal Issues:
* Clarify behavior when non-coherent memory has
<<memory-device-unmap-does-not-flush, not been flushed before being
unmapped>> (internal issue 819).
* Fix description of code:WorkgroupSize builtin to note it decorates an
object, not a variable (internal issue 836).
* Fix asciidoc attributes so that trailing '{plus}' symbols in [eq] style
equations are rendered properly (internal issue 845).
* Add language to the "`Extension Handles, Objects, Enums, and Typedefs`"
section of the Procedures and Conventions document stating that any new
handle type requires a corresponding entry in the elink:VkObjectType
enumerated type (internal issue 856).
* Update style guide to use slink macro for Vulkan handle type names, and
define narrow conditions under which to use the *name and *text macros
instead of *link (internal issue 886).
* Add a dependency of the <<VK_KHX_device_group,VK_KHX_device_group>>
extension on VK_KHX_device_group_creation to +vk.xml+ and the extension
appendix.
* Change the copyright on Vulkan specification asciidoc *source* files to
CC-BY 4.0, and update the proprietary Khronos copyright applied to the
generated *output* formats (internal issue 327). This enables broader
re-use and modification of the Vulkan specification sources, while not
affecting the Reciprocal IP License between Vulkan Adopters and Working
Group Members.
New Extensions:
* `VK_NV_fill_rectangle`
* `VK_NV_fragment_coverage_to_color`
96 lines
2.6 KiB
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96 lines
2.6 KiB
Plaintext
// Copyright (c) 2014-2017 Khronos Group. This work is licensed under a
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// Creative Commons Attribution 4.0 International License; see
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// http://creativecommons.org/licenses/by/4.0/
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[[VK_GOOGLE_display_timing]]
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== VK_GOOGLE_display_timing
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*Name String*::
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+VK_GOOGLE_display_timing+
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*Extension Type*::
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Device extension
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*Registered Extension Number*::
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93
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*Last Modified Date*::
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2017-02-14
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*Revision*::
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1
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*IP Status*::
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No known IP claims.
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*Dependencies*::
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- This extension is written against version 1.0 of the Vulkan API.
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- This extension requires +VK_KHR_swapchain+.
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*Contributors*::
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- Ian Elliott, Google
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- Jesse Hall, Google
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*Contacts*::
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- Ian Elliott, Google
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This device extension allows an application that uses the +VK_KHR_swapchain+
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extension to obtain information about the presentation engine's display, to
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obtain timing information about each present, and to schedule a present to
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happen no earlier than a desired time.
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An application can use this to minimize various visual anomalies (e.g.
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stuttering).
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Traditional game and real-time animation applications need to correctly
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position their geometry for when the presentable image will be presented to
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the user.
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To accomplish this, applications need various timing information about the
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presentation engine's display.
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They need to know when presentable images were actually presented, and when
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they could have been presented.
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Applications also need to tell the presentation engine to display an image
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no sooner than a given time.
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This can allow the application's animation to look smooth to the user, with
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no stuttering.
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This extension treats variable-refresh-rate (VRR) displays as if they are
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fixed-refresh-rate (FRR) displays.
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=== New Object Types
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None.
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=== New Enum Constants
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* Extending elink:VkStructureType:
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** ename:VK_STRUCTURE_TYPE_PRESENT_TIMES_INFO_GOOGLE
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=== New Enums
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None.
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=== New Structures
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* slink:VkRefreshCycleDurationGOOGLE
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* slink:VkPastPresentationTimingGOOGLE
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* slink:VkPresentTimesInfoGOOGLE
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* slink:VkPresentTimeGOOGLE
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=== New Functions
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* flink:vkGetRefreshCycleDurationGOOGLE
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* flink:vkGetPastPresentationTimingGOOGLE
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=== Issues
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None.
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=== Examples
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[NOTE]
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.Note
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====
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The example code for the this extension (like the +VK_KHR_surface+ and
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+VK_GOOGLE_display_timing+ extensions) is contained in the cube demo that is
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shipped with the official Khronos SDK, and is being kept up-to-date in that
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location (see:
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https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blob/master/demos/cube.c).
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====
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=== Version History
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* Revision 1, 2017-02-14 (Ian Elliott)
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- Internal revisions
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