mirror of
https://github.com/status-im/Vulkan-Docs.git
synced 2025-01-12 23:14:20 +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`
88 lines
2.6 KiB
Plaintext
88 lines
2.6 KiB
Plaintext
// Copyright (c) 2016-2017 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_KHX_device_group_creation.txt[]
|
|
|
|
*Last Modified Date*::
|
|
2016-10-19
|
|
*IP Status*::
|
|
No known IP claims.
|
|
*Contributors*::
|
|
- Jeff Bolz, NVIDIA
|
|
|
|
This extension provides instance-level commands to enumerate groups of
|
|
physical devices, and to create a logical device from a subset of one of
|
|
those groups.
|
|
Such a logical device can then be used with new features in the
|
|
VK_KHX_device_group extension.
|
|
|
|
=== New Object Types
|
|
|
|
None.
|
|
|
|
=== New Enum Constants
|
|
|
|
* Extending elink:VkStructureType:
|
|
** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_GROUP_PROPERTIES_KHX
|
|
* Extending elink:VkMemoryHeapFlagBits
|
|
** ename:VK_MEMORY_HEAP_MULTI_INSTANCE_BIT_KHX
|
|
|
|
|
|
=== New Enums
|
|
|
|
None.
|
|
|
|
=== New Structures
|
|
|
|
* slink:VkPhysicalDeviceGroupPropertiesKHX
|
|
* slink:VkDeviceGroupDeviceCreateInfoKHX
|
|
|
|
=== New Functions
|
|
|
|
* flink:vkEnumeratePhysicalDeviceGroupsKHX
|
|
|
|
=== Issues
|
|
|
|
None.
|
|
|
|
=== Examples
|
|
|
|
[source,c++]
|
|
----------------------------------------
|
|
|
|
VkDeviceCreateInfo devCreateInfo = { VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO };
|
|
// (not shown) fill out devCreateInfo as usual.
|
|
uint32_t deviceGroupCount = 0;
|
|
VkPhysicalDeviceGroupPropertiesKHX *props = NULL;
|
|
|
|
// Query the number of device groups
|
|
vkEnumeratePhysicalDeviceGroupsKHX(g_vkInstance, &deviceGroupCount, NULL);
|
|
|
|
// Allocate and initialize structures to query the device groups
|
|
props = (VkPhysicalDeviceGroupPropertiesKHX *)malloc(deviceGroupCount*sizeof(VkPhysicalDeviceGroupPropertiesKHX));
|
|
for (i = 0; i < deviceGroupCount; ++i) {
|
|
props[i].sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_GROUP_PROPERTIES_KHX;
|
|
props[i].pNext = NULL;
|
|
}
|
|
vkEnumeratePhysicalDeviceGroupsKHX(g_vkInstance, &deviceGroupCount, props);
|
|
|
|
// If the first device group has more than one physical device. create
|
|
// a logical device using all of the physical devices.
|
|
VkDeviceGroupDeviceCreateInfoKHX deviceGroupInfo = { VK_STRUCTURE_TYPE_DEVICE_GROUP_DEVICE_CREATE_INFO_KHX };
|
|
if (props[0].physicalDeviceCount > 1) {
|
|
deviceGroupInfo.physicalDeviceCount = props[0].physicalDeviceCount;
|
|
deviceGroupInfo.pPhysicalDevices = props[0].physicalDevices;
|
|
devCreateInfo.pNext = &deviceGroupInfo;
|
|
}
|
|
|
|
vkCreateDevice(props[0].physicalDevices[0], &devCreateInfo, NULL, &g_vkDevice);
|
|
free(props);
|
|
|
|
----------------------------------------
|
|
|
|
=== Version History
|
|
|
|
* Revision 1, 2016-10-19 (Jeff Bolz)
|
|
- Internal revisions
|