VkImageToMemoryCopyEXT

Each element of VkCopyImageToMemoryInfoEXT::pRegions is a structure defined as:

typedef struct VkImageToMemoryCopyEXT {
    VkStructureType sType;
    const void* pNext;
    void* pHostPointer;
    uint32_t memoryRowLength;
    uint32_t memoryImageHeight;
    VkImageSubresourceLayers imageSubresource;
    VkOffset3D imageOffset;
    VkExtent3D imageExtent;
} VkImageToMemoryCopyEXT;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• pHostPointer is the host memory address which is the destination of the copy.
• memoryRowLength and memoryImageHeight specify in texels a subregion of a larger two- or three-dimensional image in host memory, and control the addressing calculations. If either of these values is zero, that aspect of the host memory is considered to be tightly packed according to the imageExtent.
• imageSubresource is a VkImageSubresourceLayers used to specify the specific image subresources of the image used for the source or destination image data.
• imageOffset selects the initial x, y, z offsets in texels of the sub-region of the source image data.
• imageExtent is the size in texels of the image to copy in width, height and depth.

This structure is functionally similar to VkBufferImageCopy2, except it defines host memory as the target of copy instead of a buffer. In particular, the same data packing rules and restrictions as that structure apply here as well.