VkPhysicalDeviceSamplerFilterMinmaxProperties

The VkPhysicalDeviceSamplerFilterMinmaxProperties structure is defined as:

typedef struct VkPhysicalDeviceSamplerFilterMinmaxProperties {
    VkStructureType sType;
    void* pNext;
    VkBool32 filterMinmaxSingleComponentFormats;
    VkBool32 filterMinmaxImageComponentMapping;
} VkPhysicalDeviceSamplerFilterMinmaxProperties;

or the equivalent

typedef VkPhysicalDeviceSamplerFilterMinmaxProperties VkPhysicalDeviceSamplerFilterMinmaxPropertiesEXT;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• filterMinmaxSingleComponentFormats is a boolean value indicating whether a minimum set of required formats support min/max filtering.
• filterMinmaxImageComponentMapping is a boolean value indicating whether the implementation supports non-identity component mapping of the image when doing min/max filtering.

If the VkPhysicalDeviceSamplerFilterMinmaxProperties structure is included in the pNext chain of the VkPhysicalDeviceProperties2 structure passed to vkGetPhysicalDeviceProperties2, it is filled in with each corresponding implementation-dependent property.

If filterMinmaxSingleComponentFormats is VK_TRUE, the following formats must support the VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT feature with VK_IMAGE_TILING_OPTIMAL, if they support VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT:

• VK_FORMAT_R8_UNORM
• VK_FORMAT_R8_SNORM
• VK_FORMAT_R16_UNORM
• VK_FORMAT_R16_SNORM
• VK_FORMAT_R16_SFLOAT
• VK_FORMAT_R32_SFLOAT
• VK_FORMAT_D16_UNORM
• VK_FORMAT_X8_D24_UNORM_PACK32
• VK_FORMAT_D32_SFLOAT
• VK_FORMAT_D16_UNORM_S8_UINT
• VK_FORMAT_D24_UNORM_S8_UINT
• VK_FORMAT_D32_SFLOAT_S8_UINT

If the format is a depth/stencil format, this bit only specifies that the depth aspect (not the stencil aspect) of an image of this format supports min/max filtering, and that min/max filtering of the depth aspect is supported when depth compare is disabled in the sampler.

If filterMinmaxImageComponentMapping is VK_FALSE the component mapping of the image view used with min/max filtering must have been created with the r component set to the identity swizzle. Only the r component of the sampled image value is defined and the other component values are undefined:. If filterMinmaxImageComponentMapping is VK_TRUE this restriction does not apply and image component mapping works as normal.