C Specification

The VkDescriptorMappingSourceDataEXT union is defined as:

// Provided by VK_EXT_descriptor_heap
typedef union VkDescriptorMappingSourceDataEXT {
    VkDescriptorMappingSourceConstantOffsetEXT        constantOffset;
    VkDescriptorMappingSourcePushIndexEXT             pushIndex;
    VkDescriptorMappingSourceIndirectIndexEXT         indirectIndex;
    VkDescriptorMappingSourceIndirectIndexArrayEXT    indirectIndexArray;
    VkDescriptorMappingSourceHeapDataEXT              heapData;
    uint32_t                                          pushDataOffset;
    uint32_t                                          pushAddressOffset;
    VkDescriptorMappingSourceIndirectAddressEXT       indirectAddress;
    VkDescriptorMappingSourceShaderRecordIndexEXT     shaderRecordIndex;
    uint32_t                                          shaderRecordDataOffset;
    uint32_t                                          shaderRecordAddressOffset;
} VkDescriptorMappingSourceDataEXT;

Members

  • constantOffset is a VkDescriptorMappingSourceConstantOffsetEXT structure specifying the mapping for resources at a constant byte offset into a heap.

  • pushIndex is a VkDescriptorMappingSourcePushIndexEXT structure specifying the mapping for resources at an index into a heap source from push data.

  • indirectIndex is a VkDescriptorMappingSourceIndirectIndexEXT structure specifying the mapping for resources at an index into a heap source from an address in push data.

  • indirectIndexArray is a VkDescriptorMappingSourceIndirectIndexArrayEXT structure specifying the mapping for resources to an array of indices into a heap source from an address in push data.

  • heapData is a VkDescriptorMappingSourceHeapDataEXT structure specifying an offset into heap data for a uniform buffer to map to.

  • pushDataOffset an offset into push data for a uniform buffer to map to.

  • pushAddressOffset an offset into push data storing an address for a resource to map to.

  • indirectAddress is a VkDescriptorMappingSourceIndirectAddressEXT structure specifying an address in push data containing another address for a resource to map to.

  • shaderRecordIndex is a VkDescriptorMappingSourceShaderRecordIndexEXT structure specifying the mapping for resources at an index into a heap source from shader record data.

  • shaderRecordDataOffset an offset into shader record data for a uniform buffer to map to.

  • shaderRecordAddressOffset an offset into shader record data storing an address for a resource to map to.

Description

See Also

VK_EXT_descriptor_heap, VkDescriptorMappingSourceConstantOffsetEXT, VkDescriptorMappingSourceHeapDataEXT, VkDescriptorMappingSourceIndirectAddressEXT, VkDescriptorMappingSourceIndirectIndexArrayEXT, VkDescriptorMappingSourceIndirectIndexEXT, VkDescriptorMappingSourcePushIndexEXT, VkDescriptorMappingSourceShaderRecordIndexEXT, VkDescriptorSetAndBindingMappingEXT

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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0