vkCmdCopyMicromapToMemoryEXT

To copy a micromap to device memory call:

void vkCmdCopyMicromapToMemoryEXT(
    VkCommandBuffer commandBuffer,
    const VkCopyMicromapToMemoryInfoEXT* pInfo);

• commandBuffer is the command buffer into which the command will be recorded.
• pInfo is an a pointer to a VkCopyMicromapToMemoryInfoEXT structure defining the copy operation.

Accesses to pInfo→src must be synchronized with the VK_PIPELINE_STAGE_2_MICROMAP_BUILD_BIT_EXT

pipeline stage and an access type of VK_ACCESS_2_MICROMAP_READ_BIT_EXT. Accesses to the buffer indicated by pInfo→dst.deviceAddress must be synchronized with the VK_PIPELINE_STAGE_2_MICROMAP_BUILD_BIT_EXT pipeline stage and an access type of VK_ACCESS_TRANSFER_WRITE_BIT.

This command produces the same results as vkCopyMicromapToMemoryEXT, but writes its result to a device address, and is executed on the device rather than the host. The output may not necessarily be bit-for-bit identical, but it can be equally used by either vkCmdCopyMemoryToMicromapEXT or vkCopyMemoryToMicromapEXT.

The defined header structure for the serialized data consists of:

• VK_UUID_SIZE bytes of data matching VkPhysicalDeviceIDProperties::driverUUID
• VK_UUID_SIZE bytes of data identifying the compatibility for comparison using vkGetDeviceMicromapCompatibilityEXT The serialized data is written to the buffer (or read from the buffer) according to the host endianness.