vkCopyImageToImageEXT
To copy data from an image object to another image object using the host, call:
VkResult vkCopyImageToImageEXT(
VkDevice device,
const VkCopyImageToImageInfoEXT* pCopyImageToImageInfo);
deviceis the device which ownspCopyImageToImageInfo→srcImageandpCopyImageToImageInfo→dstImage.pCopyImageToImageInfois a pointer to a VkCopyImageToImageInfoEXT structure describing the copy parameters.
This command is functionally similar to vkCmdCopyImage2, except it is
executed on the host.
The memory of pCopyImageToImageInfo→srcImage and
pCopyImageToImageInfo→dstImage is accessed by the host as if
coherent.
If the device has written to the memory of
pCopyImageToImageInfo→srcImage, it is not automatically made
available to the host.
Before this copy command can be called, a memory barrier for this image
must have been issued on the device with the second
synchronization scope including
VK_PIPELINE_STAGE_HOST_BIT and VK_ACCESS_HOST_READ_BIT.
Because queue submissions automatically make host memory visible to the device, there would not be a
need for a memory barrier before using the results of this copy operation in
pCopyMemoryToImageInfo→dstImage on the device.
Valid Usage
VUID-vkCopyImageToImageEXT-hostImageCopy-09068
The hostImageCopy feature must be
enabled
Valid Usage (Implicit)
VUID-vkCopyImageToImageEXT-device-parameter
device must be a valid VkDevice handle
VUID-vkCopyImageToImageEXT-pCopyImageToImageInfo-parameter
pCopyImageToImageInfo must be a valid pointer to a valid VkCopyImageToImageInfoEXT structure