C Specification
To query information about whether a descriptor set layout can be created, call:
void vkGetDescriptorSetLayoutSupport(
VkDevice device,
const VkDescriptorSetLayoutCreateInfo* pCreateInfo,
VkDescriptorSetLayoutSupport* pSupport);
or the equivalent command
void vkGetDescriptorSetLayoutSupportKHR(
VkDevice device,
const VkDescriptorSetLayoutCreateInfo* pCreateInfo,
VkDescriptorSetLayoutSupport* pSupport);
Parameters
-
device
is the logical device that would create the descriptor set layout. -
pCreateInfo
is a pointer to a VkDescriptorSetLayoutCreateInfo structure specifying the state of the descriptor set layout object. -
pSupport
is a pointer to a VkDescriptorSetLayoutSupport structure, in which information about support for the descriptor set layout object is returned.
Description
Some implementations have limitations on what fits in a descriptor set which
are not easily expressible in terms of existing limits like
maxDescriptorSet
*, for example if all descriptor types share a limited
space in memory but each descriptor is a different size or alignment.
This command returns information about whether a descriptor set satisfies
this limit.
If the descriptor set layout satisfies the
VkPhysicalDeviceMaintenance3Properties::maxPerSetDescriptors
limit, this command is guaranteed to return VK_TRUE
in
VkDescriptorSetLayoutSupport::supported
.
If the descriptor set layout exceeds the
VkPhysicalDeviceMaintenance3Properties::maxPerSetDescriptors
limit, whether the descriptor set layout is supported is
implementation-dependent and may depend on whether the descriptor sizes and
alignments cause the layout to exceed an internal limit.
This command does not consider other limits such as
maxPerStageDescriptor
*, and so a descriptor set layout that is
supported according to this command must still satisfy the pipeline layout
limits such as maxPerStageDescriptor
* in order to be used in a
pipeline layout.
Note
This is a |
Document Notes
For more information, see the Vulkan Specification
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.
Copyright
Copyright (c) 2014-2019 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.