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b7b1c3a65d
* Bump API patch number and header version number to 67 for this update.
* Update copyright dates to 2018
Github Issues:
* Fix texture lookup functions in `GL_KHR_vulkan_glsl` specification
(public pull request 363).
* Clarify the state waited semaphores are left in when a call to
flink:vkQueuePresentKHR fails (public issue 572).
* Cleanup descriptions of slink:VkObjectTablePushConstantEntryNVX and
slink:VkObjectTableDescriptorSetEntryNVX (public issue 583)
* Remove redundant flink:vkCmdSetDiscardRectangleEXT valid usage
statements (public pull 586).
* Make dynamic state array length valid usage statements implicit for
flink:vkCmdSetViewportWScalingNV, flink:vkCmdSetDiscardRectangleEXT, and
flink:vkCmdSetViewport (public pull 589).
* Clarify meaning of window extent (0,0) in slink:VkSwapchainKHR for the
Windows and X11 platforms, in their respective extensions (public issue
590).
* Allow flink:vkGetPastPresentationTimingGOOGLE to return
ename:VK_INCOMPLETE (public issue 604).
* Add synchronization valid usage statements to flink:vkAcquireNextImage
(public pull 611).
* Fix some broken external links and internal xrefs (public pull 613).
* Clean up slink:VkViewport valid usage statements in the presence or
absence of relevant extensions (public pull 623).
* Remove
ename:VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL_KHR
token from VK_KHR_maintenance2 from the non-extension VU path for
slink:VkGraphicsPipelineCreateInfo (public issue 628).
* Miscellaneous minor markup fixes - extension name strings (public pull
631), Notes (pull 633), queue names emitted by generator scripts (pull
634), block formatting in slink:VkDescriptorUpdateTemplateEntryKHR (pull
635), ename:VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_IMG (pull
641), quotes and apostrophes (pull 643),
* Miscellaneous minor grammar fixes (public pull 644).
* Fix markup macros so usage like ptext:*Src* works (public pull 647).
Internal Issues:
* Clarify in the `VK_KHR_surface` and `VK_KHR_swapchain` extensions that
parameter combinations which aren't supported for normal images are also
unsupported for presentable images, even if the parameter values are
individually supported as reported by the surface capability queries
(internal issue 1029).
* Fixed XML typo in the valid value field of the pname:sType member of
slink:VkPhysicalDeviceExternalMemoryHostPropertiesEXT (internal issue
1100).
Other Issues:
* Add memory semantics validity rules to the <<spirvenv-module-validation,
Validation Rules within a Module>> section of the SPIR-V environment
appendix, and specify that sequentiality consistency is not supported.
This forbids certain cases like "`Load+Release`" that we don't expect to
ever be meaningful.
* Document mapping of OpenGL Shading Language barriers to SPIR-V scope and
semantics in the `GL_KHR_vulkan_glsl` specification.
New Extensions:
* `VK_EXT_conservative_rasterization`
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101 lines
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// Copyright (c) 2014-2018 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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[open,refpage='VkPresentRegionsKHR',desc='Structure hint of rectangular regions changed by vkQueuePresentKHR',type='structs']
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--
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When the `VK_KHR_incremental_present` extension is enabled, additional
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fields can: be specified that allow an application to specify that only
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certain rectangular regions of the presentable images of a swapchain are
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changed.
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This is an optimization hint that a presentation engine may: use to only
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update the region of a surface that is actually changing.
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The application still must: ensure that all pixels of a presented image
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contain the desired values, in case the presentation engine ignores this
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hint.
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An application can: provide this hint by including the
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sname:VkPresentRegionsKHR structure in the pname:pNext chain of the
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sname:VkPresentInfoKHR structure.
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The sname:VkPresentRegionsKHR structure is defined as:
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include::../../api/structs/VkPresentRegionsKHR.txt[]
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* pname:sType is the type of this structure.
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* pname:pNext is `NULL` or a pointer to an extension-specific structure.
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* pname:swapchainCount is the number of swapchains being presented to by
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this command.
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* pname:pRegions is `NULL` or a pointer to an array of
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sname:VkPresentRegionKHR elements with pname:swapchainCount entries.
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If not `NULL`, each element of pname:pRegions contains the region that
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has changed since the last present to the swapchain in the corresponding
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entry in the sname:VkPresentInfoKHR::pname:pSwapchains array.
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.Valid Usage
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****
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* [[VUID-VkPresentRegionsKHR-swapchainCount-01260]]
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pname:swapchainCount must: be the same value as
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sname:VkPresentInfoKHR::pname:swapchainCount, where
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sname:VkPresentInfoKHR is in the pNext-chain of this
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sname:VkPresentRegionsKHR structure.
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****
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include::../../validity/structs/VkPresentRegionsKHR.txt[]
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--
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[open,refpage='VkPresentRegionKHR',desc='Structure containing rectangular region changed by vkQueuePresentKHR for a given VkImage',type='structs']
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--
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For a given image and swapchain, the region to present is specified by the
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sname:VkPresentRegionKHR structure, which is defined as:
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include::../../api/structs/VkPresentRegionKHR.txt[]
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* pname:rectangleCount is the number of rectangles in pname:pRectangles,
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or zero if the entire image has changed and should be presented.
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* pname:pRectangles is either `NULL` or a pointer to an array of
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sname:VkRectLayerKHR structures.
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The sname:VkRectLayerKHR structure is the framebuffer coordinates, plus
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layer, of a portion of a presentable image that has changed and must: be
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presented.
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If non-`NULL`, each entry in pname:pRectangles is a rectangle of the
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given image that has changed since the last image was presented to the
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given swapchain.
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include::../../validity/structs/VkPresentRegionKHR.txt[]
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--
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[open,refpage='VkRectLayerKHR',desc='Structure containing a rectangle, including layer, changed by vkQueuePresentKHR for a given VkImage',type='structs']
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--
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The sname:VkRectLayerKHR structure is defined as:
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include::../../api/structs/VkRectLayerKHR.txt[]
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* pname:offset is the origin of the rectangle, in pixels.
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* pname:extent is the size of the rectangle, in pixels.
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* pname:layer is the layer of the image.
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For images with only one layer, the value of pname:layer must: be 0.
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.Valid Usage
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****
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* [[VUID-VkRectLayerKHR-offset-01261]]
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The sum of pname:offset and pname:extent must: be no greater than the
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pname:imageExtent member of the sname:VkSwapchainCreateInfoKHR structure
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given to flink:vkCreateSwapchainKHR.
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* [[VUID-VkRectLayerKHR-layer-01262]]
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pname:layer must: be less than pname:imageArrayLayers member of the
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sname:VkSwapchainCreateInfoKHR structure given to
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flink:vkCreateSwapchainKHR.
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****
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include::../../validity/structs/VkRectLayerKHR.txt[]
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Some platforms allow the size of a surface to change, and then scale the
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pixels of the image to fit the surface.
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sname:VkRectLayerKHR specifies pixels of the swapchain's image(s), which
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will be constant for the life of the swapchain.
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--
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