vkUpdateDescriptorSets

Once allocated, descriptor sets can be updated with a combination of write and copy operations. To update descriptor sets, call:

void vkUpdateDescriptorSets(
    VkDevice device,
    uint32_t descriptorWriteCount,
    const VkWriteDescriptorSet* pDescriptorWrites,
    uint32_t descriptorCopyCount,
    const VkCopyDescriptorSet* pDescriptorCopies);

device is the logical device that updates the descriptor sets.
descriptorWriteCount is the number of elements in the pDescriptorWrites array.
pDescriptorWrites is a pointer to an array of VkWriteDescriptorSet structures describing the descriptor sets to write to.
descriptorCopyCount is the number of elements in the pDescriptorCopies array.
pDescriptorCopies is a pointer to an array of VkCopyDescriptorSet structures describing the descriptor sets to copy between.

The operations described by pDescriptorWrites are performed first, followed by the operations described by pDescriptorCopies. Within each array, the operations are performed in the order they appear in the array.

Each element in the pDescriptorWrites array describes an operation updating the descriptor set using descriptors for resources specified in the structure.

Each element in the pDescriptorCopies array is a VkCopyDescriptorSet structure describing an operation copying descriptors between sets.

If the dstSet member of any element of pDescriptorWrites or pDescriptorCopies is bound, accessed, or modified by any command that was recorded to a command buffer which is currently in the recording or executable state, and any of the descriptor bindings that are updated were not created with the VK_DESCRIPTOR_BINDING_UPDATE_AFTER_BIND_BIT or VK_DESCRIPTOR_BINDING_UPDATE_UNUSED_WHILE_PENDING_BIT bits set, that command buffer becomes invalid.

Copying a descriptor from a descriptor set does not constitute a use of the referenced resource or view, as it is the reference itself that is copied. Applications can copy a descriptor referencing a destroyed resource, and it can copy an undefined: descriptor. The destination descriptor becomes undefined: in both cases.

Valid Usage

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06236

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER or VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, elements of the pTexelBufferView member of pDescriptorWrites[i] must have been created on device

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06237

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, or VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, the buffer member of any element of the pBufferInfo member of pDescriptorWrites[i] must have been created on device

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06238

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_SAMPLER or VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, and dstSet was not allocated with a layout that included immutable samplers for dstBinding with descriptorType, the sampler member of any element of the pImageInfo member of pDescriptorWrites[i] must have been created on device

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06239

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, or VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER the imageView member of any element of pDescriptorWrites[i] must have been created on device

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06240

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, elements of the pAccelerationStructures member of a VkWriteDescriptorSetAccelerationStructureKHR structure in the pNext chain of pDescriptorWrites[i] must have been created on device

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06241

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_NV, elements of the pAccelerationStructures member of a VkWriteDescriptorSetAccelerationStructureNV structure in the pNext chain of pDescriptorWrites[i] must have been created on device

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06940

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_SAMPLE_WEIGHT_IMAGE_QCOM or VK_DESCRIPTOR_TYPE_BLOCK_MATCH_IMAGE_QCOM, the imageView member of any element of pDescriptorWrites[i] must have been created on device

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06493

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_SAMPLER, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, or VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, pDescriptorWrites[i].pImageInfo must be a valid pointer to an array of pDescriptorWrites[i].descriptorCount valid VkDescriptorImageInfo structures

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06941

For each element i where pDescriptorWrites[i].descriptorType is VK_DESCRIPTOR_TYPE_SAMPLE_WEIGHT_IMAGE_QCOM or VK_DESCRIPTOR_TYPE_BLOCK_MATCH_IMAGE_QCOM, pDescriptorWrites[i].pImageInfo must be a valid pointer to an array of pDescriptorWrites[i].descriptorCount valid VkDescriptorImageInfo structures

VUID-vkUpdateDescriptorSets-None-03047

The dstSet member of each element of pDescriptorWrites or pDescriptorCopies for bindings which were created without the VK_DESCRIPTOR_BINDING_UPDATE_AFTER_BIND_BIT or VK_DESCRIPTOR_BINDING_UPDATE_UNUSED_WHILE_PENDING_BIT bits set must not be used by any command that was recorded to a command buffer which is in the pending state

VUID-vkUpdateDescriptorSets-pDescriptorWrites-06993

Host access to pDescriptorWrites[i].dstSet and pDescriptorCopies[i].dstSet must be externally synchronized unless explicitly denoted otherwise for specific flags