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