mirror of
https://github.com/status-im/Vulkan-Docs.git
synced 2025-02-25 20:45:12 +00:00
194a7f4d0d
* Update release number to 122.
Internal Issues:
* Add style guide language on not using standalone `+` signs (internal
issue 736); not using leading whitespace for markup (internal issue
747); and on keeping descriptions of a single API in a contiguous block
of markup (internal issue 949), and apply them to the specification.
* Add a glossary definition of "`constant integral expression`", pointing
to the SPIR-V "`constant instruction`" definition (internal issue 1225).
* Many minor edits to improve writing style consistency and capture
additional style guidelines (internal issue 1553).
* Clarify that <<fragops-depth-write, depth writes are not performed>> if
there is no depth framebuffer attachment (internal issue 1771).
* Allow implementations to use rectangular line style of interpolation for
<<primsrast-lines-bresenham, wide Bresenham lines>>, though replicating
attributes is still preferred. Clarify that code:FragCoord is not
replicated (internal issue 1772).
* Resolve a contradiction in valid usage statements for
slink:VkImageCreateInfo and slink:VkImageStencilUsageCreateInfoEXT
(internal issue 1773).
* Add style guide discussion of markup for indented equations, and use
markup workaround for asciidoctor 2 compatibility (internal issue 1793).
* Deprecate the `<<VK_EXT_validation_flags>>` extension in `vk.xml` and
the extension appendix (internal issue 1801).
* Add a new checker script `scripts/xml_consistency.py`. This is not
currently run as part of internal CI (internal merge request 3285).
* Correct "`an`" -> "`a`" prepositions where needed (internal merge
request 3334).
* Clarify that the <<features-uniformBufferStandardLayout,
pname:uniformBufferStandardLayout>> feature is only required when the
extension defining it is supported (internal merge request 3341).
* Bring scripts into closer sync with OpenXR, mainly through conversion of
comments to docstrings where appropriate, and add gen-scripts-docs.sh
(internal merge request 3324).
* Correct pname:maxDrawMeshTasksCount to 2^16^-1 in the <<limits-required,
Required Limits>> table (internal merge requests 3361).
New Extensions
* `<<VK_IMG_format_pvrtc>>` (public issue 512).
86 lines
3.2 KiB
Plaintext
86 lines
3.2 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/
|
|
|
|
[[platformCreateSurface_android,platformCreateSurface_android]]
|
|
|
|
=== Android Platform
|
|
|
|
[open,refpage='vkCreateAndroidSurfaceKHR',desc='Create a slink:VkSurfaceKHR object for an Android native window',type='protos']
|
|
--
|
|
|
|
To create a sname:VkSurfaceKHR object for an Android native window, call:
|
|
|
|
include::{generated}/api/protos/vkCreateAndroidSurfaceKHR.txt[]
|
|
|
|
* pname:instance is the instance to associate the surface with.
|
|
* pname:pCreateInfo is a pointer to a sname:VkAndroidSurfaceCreateInfoKHR
|
|
structure containing parameters affecting the creation of the surface
|
|
object.
|
|
* pname:pAllocator is the allocator used for host memory allocated for the
|
|
surface object when there is no more specific allocator available (see
|
|
<<memory-allocation,Memory Allocation>>).
|
|
* pname:pSurface is a pointer to a slink:VkSurfaceKHR handle in which the
|
|
created surface object is returned.
|
|
|
|
During the lifetime of a surface created using a particular
|
|
dlink:ANativeWindow handle any attempts to create another surface for the
|
|
same dlink:ANativeWindow and any attempts to connect to the same
|
|
dlink:ANativeWindow through other platform mechanisms will fail.
|
|
|
|
[NOTE]
|
|
.Note
|
|
====
|
|
In particular, only one sname:VkSurfaceKHR can: exist at a time for a given
|
|
window.
|
|
Similarly, a native window cannot: be used by both a sname:VkSurfaceKHR and
|
|
code:EGLSurface simultaneously.
|
|
====
|
|
|
|
If successful, fname:vkCreateAndroidSurfaceKHR increments the
|
|
dlink:ANativeWindow's reference count, and fname:vkDestroySurfaceKHR will
|
|
decrement it.
|
|
|
|
On Android, when a swapchain's pname:imageExtent does not match the
|
|
surface's pname:currentExtent, the presentable images will be scaled to the
|
|
surface's dimensions during presentation.
|
|
pname:minImageExtent is [eq]#(1,1)#, and pname:maxImageExtent is the maximum
|
|
image size supported by the consumer.
|
|
For the system compositor, pname:currentExtent is the window size (i.e. the
|
|
consumer's preferred size).
|
|
|
|
include::{generated}/validity/protos/vkCreateAndroidSurfaceKHR.txt[]
|
|
--
|
|
|
|
[open,refpage='VkAndroidSurfaceCreateInfoKHR',desc='Structure specifying parameters of a newly created Android surface object',type='structs']
|
|
--
|
|
|
|
The sname:VkAndroidSurfaceCreateInfoKHR structure is defined as:
|
|
|
|
include::{generated}/api/structs/VkAndroidSurfaceCreateInfoKHR.txt[]
|
|
|
|
* pname:sType is the type of this structure.
|
|
* pname:pNext is `NULL` or a pointer to an extension-specific structure.
|
|
* pname:flags is reserved for future use.
|
|
* pname:window is a pointer to the dlink:ANativeWindow to associate the
|
|
surface with.
|
|
|
|
.Valid Usage
|
|
****
|
|
* [[VUID-VkAndroidSurfaceCreateInfoKHR-window-01248]]
|
|
pname:window must: point to a valid Android dlink:ANativeWindow.
|
|
****
|
|
|
|
include::{generated}/validity/structs/VkAndroidSurfaceCreateInfoKHR.txt[]
|
|
--
|
|
|
|
[open,refpage='ANativeWindow',desc='Android native window type',type='defines']
|
|
--
|
|
To remove an unnecessary compile-time dependency, an incomplete type
|
|
definition of dlink:ANativeWindow is provided in the Vulkan headers:
|
|
|
|
include::{generated}/api/defines/ANativeWindow.txt[]
|
|
|
|
The actual dlink:ANativeWindow type is defined in Android NDK headers.
|
|
--
|