C Specification

The VkPhysicalDeviceSamplerFilterMinmaxPropertiesEXT structure is defined as:

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

Members

The members of the VkPhysicalDeviceSamplerFilterMinmaxPropertiesEXT structure describe the following implementation-dependent limits:

Description

  • sType is the type of this structure.

  • pNext is NULL or a pointer to an extension-specific 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 VkPhysicalDeviceSamplerFilterMinmaxPropertiesEXT structure is included in the pNext chain of VkPhysicalDeviceProperties2, it is filled with the implementation-dependent limits.

If filterMinmaxSingleComponentFormats is VK_TRUE, the following formats must support the VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT_EXT 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 VK_COMPONENT_SWIZZLE_IDENTITY. 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.

Valid Usage (Implicit)
  • sType must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_FILTER_MINMAX_PROPERTIES_EXT

See Also

VkBool32, VkStructureType

Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

Copyright (c) 2014-2019 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.