VkImageViewSlicedCreateInfoEXT

The range of 3D slices for the created image view can be restricted to a subset of the parent image’s Z range by adding a VkImageViewSlicedCreateInfoEXT structure to the pNext chain of VkImageViewCreateInfo.

The VkImageViewSlicedCreateInfoEXT structure is defined as:

typedef struct VkImageViewSlicedCreateInfoEXT {
    VkStructureType sType;
    const void* pNext;
    uint32_t sliceOffset;
    uint32_t sliceCount;
} VkImageViewSlicedCreateInfoEXT;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• sliceOffset is the Z-offset for the first 3D slice accessible to the image view.
• sliceCount is the number of 3D slices accessible to the image view.

When this structure is chained to VkImageViewCreateInfo the sliceOffset field is treated as a Z-offset for the sliced view and sliceCount specifies the range. Shader accesses using a Z coordinate of 0 will access the depth slice corresponding to sliceOffset in the image, and in a shader, the maximum in-bounds Z coordinate for the view is sliceCount - 1.

A sliced 3D view must only be used with a single mip level. The slice coordinates are integer coordinates within the subresourceRange.baseMipLevel used to create the image view.

The effective view depth is equal to extent.depth used to create the image for this view adjusted by subresourceRange.baseMipLevel as specified in Image Mip Level Sizing.

Shader access to this image view is only affected by VkImageViewSlicedCreateInfoEXT if it uses a descriptor of type VK_DESCRIPTOR_TYPE_STORAGE_IMAGE. For access using any other descriptor type, the contents of VkImageViewSlicedCreateInfoEXT are ignored; instead, sliceOffset is treated as being equal to 0, and sliceCount is treated as being equal to VK_REMAINING_3D_SLICES_EXT.