mirror of
https://github.com/status-im/Vulkan-Docs.git
synced 2025-01-12 06:54:14 +00:00
fd0e4c3b67
* Bump API patch number and header version number to 42 for this update
(the first anniversary edition).
Github Issues:
* Changed asciidoctor macros so cross-page links in the standalone
reference pages function properly (public issue 462).
Internal Issues:
* Clarified host visibility discussion for slink:VkMemoryType,
flink:vkInvalidateMappedMemoryRanges, elink:VkAccessFlagBits, and the
<<synchronization-framebuffer-regions,Framebuffer Region Dependencies>>
section, removing duplicated information and adding a central definition
in the access types section (internal issue 552).
* Change description of
slink:vkGetPhysicalDeviceSurfacePresentModesKHR::pname:pPresentModes to
return an array of values, not structures (internal issue 699).
New Extensions:
* Add a NOTE to the <<extensions,Layers & Extensions>> chapter describing
the experimental status of `KHX` extensions.
* Add new Khronos, Khronos Experimental, and vendor Vulkan extensions for
release at GDC:
** VK_KHR_descriptor_update_template
** VK_KHR_push_descriptor
** VK_KHX_device_group
** VK_KHX_device_group_creation
** VK_KHX_external_memory
** VK_KHX_external_memory_capabilities
** VK_KHX_external_memory_fd
** VK_KHX_external_memory_win32
** VK_KHX_external_semaphore
** VK_KHX_external_semaphore_capabilities
** VK_KHX_external_semaphore_fd
** VK_KHX_external_semaphore_win32
** VK_KHX_multiview
** VK_KHX_win32_keyed_mutex
** VK_EXT_discard_rectangles
** VK_MVK_ios_surface
** VK_MVK_macos_surface
** VK_NVX_multiview_per_view_attributes
** VK_NV_clip_space_w_scaling
** VK_NV_geometry_shader_passthrough
** VK_NV_sample_mask_override_coverage
** VK_NV_viewport_array2
** VK_NV_viewport_swizzle
* Add new GLSL vendor extensions to support new builtin variables:
** GL_EXT_device_group
** GL_EXT_multiview
102 lines
2.8 KiB
Plaintext
102 lines
2.8 KiB
Plaintext
// Copyright (c) 2016-2017 The Khronos Group Inc.
|
|
// Copyright notice at https://www.khronos.org/registry/speccopyright.html
|
|
|
|
[[VK_KHX_device_group_creation]]
|
|
== VK_KHX_device_group_creation
|
|
|
|
*Name String*::
|
|
+VK_KHX_device_group_creation+
|
|
*Extension Type*::
|
|
Instance extension
|
|
*Registered Extension Number*::
|
|
71
|
|
*Status*::
|
|
Draft.
|
|
*Last Modified Date*::
|
|
2016-10-19
|
|
*Revision*::
|
|
1
|
|
*IP Status*::
|
|
No known IP claims.
|
|
*Dependencies*::
|
|
- This extension is written against version 1.0 of the Vulkan API.
|
|
*Contributors*::
|
|
- Jeff Bolz, NVIDIA
|
|
*Contacts*::
|
|
- Jeff Bolz (jbolz 'at' nvidia.com)
|
|
|
|
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 ename:VkStructureType:
|
|
** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_GROUP_PROPERTIES_KHX
|
|
* Extending ename: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
|