C Specification
Bits which can be set in the VkFormatProperties features
linearTilingFeatures, optimalTilingFeatures,
drmFormatModifierTilingFeatures,
and bufferFeatures are:
typedef enum VkFormatFeatureFlagBits {
VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT = 0x00000001,
VK_FORMAT_FEATURE_STORAGE_IMAGE_BIT = 0x00000002,
VK_FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT = 0x00000004,
VK_FORMAT_FEATURE_UNIFORM_TEXEL_BUFFER_BIT = 0x00000008,
VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_BIT = 0x00000010,
VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_ATOMIC_BIT = 0x00000020,
VK_FORMAT_FEATURE_VERTEX_BUFFER_BIT = 0x00000040,
VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT = 0x00000080,
VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT = 0x00000100,
VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT = 0x00000200,
VK_FORMAT_FEATURE_BLIT_SRC_BIT = 0x00000400,
VK_FORMAT_FEATURE_BLIT_DST_BIT = 0x00000800,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT = 0x00001000,
VK_FORMAT_FEATURE_TRANSFER_SRC_BIT = 0x00004000,
VK_FORMAT_FEATURE_TRANSFER_DST_BIT = 0x00008000,
VK_FORMAT_FEATURE_MIDPOINT_CHROMA_SAMPLES_BIT = 0x00020000,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_LINEAR_FILTER_BIT = 0x00040000,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_SEPARATE_RECONSTRUCTION_FILTER_BIT = 0x00080000,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_BIT = 0x00100000,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_FORCEABLE_BIT = 0x00200000,
VK_FORMAT_FEATURE_DISJOINT_BIT = 0x00400000,
VK_FORMAT_FEATURE_COSITED_CHROMA_SAMPLES_BIT = 0x00800000,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_IMG = 0x00002000,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT_EXT = 0x00010000,
VK_FORMAT_FEATURE_FRAGMENT_DENSITY_MAP_BIT_EXT = 0x01000000,
VK_FORMAT_FEATURE_TRANSFER_SRC_BIT_KHR = VK_FORMAT_FEATURE_TRANSFER_SRC_BIT,
VK_FORMAT_FEATURE_TRANSFER_DST_BIT_KHR = VK_FORMAT_FEATURE_TRANSFER_DST_BIT,
VK_FORMAT_FEATURE_MIDPOINT_CHROMA_SAMPLES_BIT_KHR = VK_FORMAT_FEATURE_MIDPOINT_CHROMA_SAMPLES_BIT,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_LINEAR_FILTER_BIT_KHR = VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_LINEAR_FILTER_BIT,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_SEPARATE_RECONSTRUCTION_FILTER_BIT_KHR = VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_SEPARATE_RECONSTRUCTION_FILTER_BIT,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_BIT_KHR = VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_BIT,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_FORCEABLE_BIT_KHR = VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_FORCEABLE_BIT,
VK_FORMAT_FEATURE_DISJOINT_BIT_KHR = VK_FORMAT_FEATURE_DISJOINT_BIT,
VK_FORMAT_FEATURE_COSITED_CHROMA_SAMPLES_BIT_KHR = VK_FORMAT_FEATURE_COSITED_CHROMA_SAMPLES_BIT,
VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_EXT = VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_IMG,
VK_FORMAT_FEATURE_FLAG_BITS_MAX_ENUM = 0x7FFFFFFF
} VkFormatFeatureFlagBits;
Description
The following bits may be set in
linearTilingFeatures, optimalTilingFeatures, and
drmFormatModifierTilingFeatures,
specifying that the features are supported by images or
image views created with the queried
vkGetPhysicalDeviceFormatProperties::format:
-
VK_FORMAT_FEATURE_SAMPLED_IMAGE_BITspecifies that an image view can be sampled from. -
VK_FORMAT_FEATURE_STORAGE_IMAGE_BITspecifies that an image view can be used as a storage images. -
VK_FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BITspecifies that an image view can be used as storage image that supports atomic operations. -
VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BITspecifies that an image view can be used as a framebuffer color attachment and as an input attachment. -
VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BITspecifies that an image view can be used as a framebuffer color attachment that supports blending and as an input attachment. -
VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BITspecifies that an image view can be used as a framebuffer depth/stencil attachment and as an input attachment. -
VK_FORMAT_FEATURE_BLIT_SRC_BITspecifies that an image can be used assrcImagefor thevkCmdBlitImagecommand. -
VK_FORMAT_FEATURE_BLIT_DST_BITspecifies that an image can be used asdstImagefor thevkCmdBlitImagecommand. -
VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BITspecifies that ifVK_FORMAT_FEATURE_SAMPLED_IMAGE_BITis also set, an image view can be used with a sampler that has either ofmagFilterorminFilterset toVK_FILTER_LINEAR, ormipmapModeset toVK_SAMPLER_MIPMAP_MODE_LINEAR. IfVK_FORMAT_FEATURE_BLIT_SRC_BITis also set, an image can be used as thesrcImageto vkCmdBlitImage with afilterofVK_FILTER_LINEAR. This bit must only be exposed for formats that also support theVK_FORMAT_FEATURE_SAMPLED_IMAGE_BITorVK_FORMAT_FEATURE_BLIT_SRC_BIT.If the format being queried is a depth/stencil format, this bit only specifies that the depth aspect (not the stencil aspect) of an image of this format supports linear filtering, and that linear filtering of the depth aspect is supported whether depth compare is enabled in the sampler or not. If this bit is not present, linear filtering with depth compare disabled is unsupported and linear filtering with depth compare enabled is supported, but may compute the filtered value in an implementation-dependent manner which differs from the normal rules of linear filtering. The resulting value must be in the range [0,1] and should be proportional to, or a weighted average of, the number of comparison passes or failures.
-
VK_FORMAT_FEATURE_TRANSFER_SRC_BITspecifies that an image can be used as a source image for copy commands. -
VK_FORMAT_FEATURE_TRANSFER_DST_BITspecifies that an image can be used as a destination image for copy commands and clear commands. -
VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT_EXTspecifiesVkImagecan be used as a sampled image with a min or max VkSamplerReductionModeEXT. This bit must only be exposed for formats that also support theVK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT. -
VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_EXTspecifies thatVkImagecan be used with a sampler that has either ofmagFilterorminFilterset toVK_FILTER_CUBIC_EXT, or be the source image for a blit withfilterset toVK_FILTER_CUBIC_EXT. This bit must only be exposed for formats that also support theVK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT. If the format being queried is a depth/stencil format, this only specifies that the depth aspect is cubic filterable. -
VK_FORMAT_FEATURE_MIDPOINT_CHROMA_SAMPLES_BITspecifies that an application can define a sampler Y’CBCR conversion using this format as a source, and that an image of this format can be used with aVkSamplerYcbcrConversionCreateInfoxChromaOffsetand/oryChromaOffsetofVK_CHROMA_LOCATION_MIDPOINT. Otherwise bothxChromaOffsetandyChromaOffsetmust beVK_CHROMA_LOCATION_COSITED_EVEN. If a format does not incorporate chroma downsampling (it is not a “422” or “420” format) but the implementation supports sampler Y’CBCR conversion for this format, the implementation must setVK_FORMAT_FEATURE_MIDPOINT_CHROMA_SAMPLES_BIT. -
VK_FORMAT_FEATURE_COSITED_CHROMA_SAMPLES_BITspecifies that an application can define a sampler Y’CBCR conversion using this format as a source, and that an image of this format can be used with aVkSamplerYcbcrConversionCreateInfoxChromaOffsetand/oryChromaOffsetofVK_CHROMA_LOCATION_COSITED_EVEN. Otherwise bothxChromaOffsetandyChromaOffsetmust beVK_CHROMA_LOCATION_MIDPOINT. If neitherVK_FORMAT_FEATURE_COSITED_CHROMA_SAMPLES_BITnorVK_FORMAT_FEATURE_MIDPOINT_CHROMA_SAMPLES_BITis set, the application must not define a sampler Y’CBCR conversion using this format as a source. -
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_LINEAR_FILTER_BITspecifies that the format can do linear sampler filtering (min/magFilter) whilst sampler Y’CBCR conversion is enabled. -
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_SEPARATE_RECONSTRUCTION_FILTER_BITspecifies that the format can have different chroma, min, and mag filters. -
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_BITspecifies that reconstruction is explicit, as described in https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#textures-chroma-reconstruction. If this bit is not present, reconstruction is implicit by default. -
VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_FORCEABLE_BITspecifies that reconstruction can be forcibly made explicit by setting VkSamplerYcbcrConversionCreateInfo::forceExplicitReconstructiontoVK_TRUE. -
VK_FORMAT_FEATURE_DISJOINT_BITspecifies that a multi-planar image can have theVK_IMAGE_CREATE_DISJOINT_BITset during image creation. An implementation must not setVK_FORMAT_FEATURE_DISJOINT_BITfor single-plane formats. -
VK_FORMAT_FEATURE_FRAGMENT_DENSITY_MAP_BIT_EXTspecifies that an image view can be used as a fragment density map attachment.
The following bits may be set in bufferFeatures, specifying that the
features are supported by buffers or buffer
views created with the queried
vkGetPhysicalDeviceProperties::format:
-
VK_FORMAT_FEATURE_UNIFORM_TEXEL_BUFFER_BITspecifies that the format can be used to create a buffer view that can be bound to aVK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFERdescriptor. -
VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_BITspecifies that the format can be used to create a buffer view that can be bound to aVK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFERdescriptor. -
VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_ATOMIC_BITspecifies that atomic operations are supported onVK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFERwith this format. -
VK_FORMAT_FEATURE_VERTEX_BUFFER_BITspecifies that the format can be used as a vertex attribute format (VkVertexInputAttributeDescription::format).
See Also
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.