C Specification
To query information about whether a descriptor set layout can be created, call:
// Provided by VK_VERSION_1_1
void vkGetDescriptorSetLayoutSupport(
VkDevice device,
const VkDescriptorSetLayoutCreateInfo* pCreateInfo,
VkDescriptorSetLayoutSupport* pSupport);
or the equivalent command
// Provided by VK_KHR_maintenance3
void vkGetDescriptorSetLayoutSupportKHR(
VkDevice device,
const VkDescriptorSetLayoutCreateInfo* pCreateInfo,
VkDescriptorSetLayoutSupport* pSupport);
Parameters
-
deviceis the logical device that would create the descriptor set layout. -
pCreateInfois a pointer to a VkDescriptorSetLayoutCreateInfo structure specifying the state of the descriptor set layout object. -
pSupportis 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.
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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.