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// Copyright (c) 2015-2017 Khronos Group. This work is licensed under a
// Creative Commons Attribution 4.0 International License; see
// http://creativecommons.org/licenses/by/4.0/
[appendix]
[[spirvenv]]
= Vulkan Environment for SPIR-V
Shaders for Vulkan are defined by the <<spirv-spec,Khronos SPIR-V
Specification>> as well as the <<spirv-extended,Khronos SPIR-V Extended
Instructions for GLSL>> Specification.
This appendix defines additional SPIR-V requirements applying to Vulkan
shaders.
== Versions and Formats
A Vulkan 1.0 implementation must: support the 1.0 version of SPIR-V and the
1.0 version of the SPIR-V Extended Instructions for GLSL.
A SPIR-V module passed into flink:vkCreateShaderModule is interpreted as a
series of 32-bit words in host endianness, with literal strings packed as
described in section 2.2 of the SPIR-V Specification.
The first few words of the SPIR-V module must: be a magic number and a
SPIR-V version number, as described in section 2.3 of the SPIR-V
Specification.
[[spirvenv-capabilities]]
== Capabilities
Implementations must: support the following capability operands declared by
code:OpCapability:
* code:Matrix
* code:Shader
* code:InputAttachment
* code:Sampled1D
* code:Image1D
* code:SampledBuffer
* code:ImageBuffer
* code:ImageQuery
* code:DerivativeControl
Implementations may: support features that are not required: by the
Specification, as described in the <<features-features,Features>> chapter.
If such a feature is supported, then any capability operand(s) corresponding
to that feature must: also be supported.
[[spirvenv-capabilities-table]]
.SPIR-V Capabilities which are not required:, and corresponding feature or extension names
[options="header"]
|====
| SPIR-V OpCapability | Vulkan feature or extension name
| code:Geometry | <<features-features-geometryShader,geometryShader>>
| code:Tessellation | <<features-features-tessellationShader,tessellationShader>>
| code:Float64 | <<features-features-shaderFloat64,shaderFloat64>>
| code:Int64 | <<features-features-shaderInt64,shaderInt64>>
| code:Int16 | <<features-features-shaderInt16,shaderInt16>>
| code:TessellationPointSize | <<features-features-shaderTessellationAndGeometryPointSize,shaderTessellationAndGeometryPointSize>>
| code:GeometryPointSize | <<features-features-shaderTessellationAndGeometryPointSize,shaderTessellationAndGeometryPointSize>>
| code:ImageGatherExtended | <<features-features-shaderImageGatherExtended,shaderImageGatherExtended>>
| code:StorageImageMultisample | <<features-features-shaderStorageImageMultisample,shaderStorageImageMultisample>>
| code:UniformBufferArrayDynamicIndexing | <<features-features-shaderUniformBufferArrayDynamicIndexing,shaderUniformBufferArrayDynamicIndexing>>
| code:SampledImageArrayDynamicIndexing | <<features-features-shaderSampledImageArrayDynamicIndexing,shaderSampledImageArrayDynamicIndexing>>
| code:StorageBufferArrayDynamicIndexing | <<features-features-shaderStorageBufferArrayDynamicIndexing,shaderStorageBufferArrayDynamicIndexing>>
| code:StorageImageArrayDynamicIndexing | <<features-features-shaderStorageImageArrayDynamicIndexing,shaderStorageImageArrayDynamicIndexing>>
| code:ClipDistance | <<features-features-shaderClipDistance,shaderClipDistance>>
| code:CullDistance | <<features-features-shaderCullDistance,shaderCullDistance>>
| code:ImageCubeArray | <<features-features-imageCubeArray,imageCubeArray>>
| code:SampleRateShading | <<features-features-sampleRateShading,sampleRateShading>>
| code:SparseResidency | <<features-features-shaderResourceResidency,shaderResourceResidency>>
| code:MinLod | <<features-features-shaderResourceMinLod,shaderResourceMinLod>>
| code:SampledCubeArray | <<features-features-imageCubeArray,imageCubeArray>>
| code:ImageMSArray | <<features-features-shaderStorageImageMultisample,shaderStorageImageMultisample>>
| code:StorageImageExtendedFormats | <<features-features-shaderStorageImageExtendedFormats,shaderStorageImageExtendedFormats>>
| code:InterpolationFunction | <<features-features-sampleRateShading,sampleRateShading>>
| code:StorageImageReadWithoutFormat | <<features-features-shaderStorageImageReadWithoutFormat,shaderStorageImageReadWithoutFormat>>
| code:StorageImageWriteWithoutFormat | <<features-features-shaderStorageImageWriteWithoutFormat,shaderStorageImageWriteWithoutFormat>>
| code:MultiViewport | <<features-features-multiViewport,multiViewport>>
ifdef::VK_KHR_shader_draw_parameters[]
[[spirvenv-capabilities-table-drawparameters]]
| code:DrawParameters | <<VK_KHR_shader_draw_parameters,VK_KHR_shader_draw_parameters>>
endif::VK_KHR_shader_draw_parameters[]
ifdef::VK_KHR_variable_pointers[]
[[spirvenv-capabilities-table-variablepointers]]
| code:VariablePointersStorageBuffer | <<features-features-variablePointersStorageBuffer,variablePointersStorageBuffer>>
| code:VariablePointers | <<features-features-variablePointers,variablePointers>>
endif::VK_KHR_variable_pointers[]
ifdef::VK_EXT_shader_stencil_export[]
[[spirvenv-capabilities-table-shaderstencilexportext]]
| code:StencilExportEXT | <<VK_EXT_shader_stencil_export,VK_EXT_shader_stencil_export>>
endif::VK_EXT_shader_stencil_export[]
ifdef::VK_EXT_shader_subgroup_ballot[]
[[spirvenv-capabilities-table-subgroupballot]]
| code:SubgroupBallotKHR | <<VK_EXT_shader_subgroup_ballot,VK_EXT_shader_subgroup_ballot>>
endif::VK_EXT_shader_subgroup_ballot[]
ifdef::VK_EXT_shader_subgroup_vote[]
[[spirvenv-capabilities-table-subgroupvote]]
| code:SubgroupVoteKHR | <<VK_EXT_shader_subgroup_vote,VK_EXT_shader_subgroup_vote>>
endif::VK_EXT_shader_subgroup_vote[]
ifdef::VK_KHX_multiview[]
[[spirvenv-capabilities-table-multiview]]
| code:MultiView | <<VK_KHX_multiview,VK_KHX_multiview>>
endif::VK_KHX_multiview[]
ifdef::VK_KHX_device_group[]
[[spirvenv-capabilities-table-devicegroup]]
| code:DeviceGroup | <<VK_KHX_device_group,VK_KHX_device_group>>
endif::VK_KHX_device_group[]
ifdef::VK_AMD_shader_image_load_store_lod[]
[[spirvenv-capabilities-table-imagereadwritelodamd]]
| code:ImageReadWriteLodAMD | <<VK_AMD_shader_image_load_store_lod,VK_AMD_shader_image_load_store_lod>>
endif::VK_AMD_shader_image_load_store_lod[]
ifdef::VK_AMD_texture_gather_bias_lod[]
[[spirvenv-capabilities-table-imagegatherbiaslodamd]]
| code:ImageGatherBiasLodAMD | <<VK_AMD_texture_gather_bias_lod,VK_AMD_texture_gather_bias_lod>>
endif::VK_AMD_texture_gather_bias_lod[]
ifdef::VK_AMD_shader_fragment_mask[]
[[spirvenv-capabilities-table-fragmentmaskamd]]
| code:FragmentMaskAMD | <<VK_AMD_shader_fragment_mask,VK_AMD_shader_fragment_mask>>
endif::VK_AMD_shader_fragment_mask[]
ifdef::VK_NV_sample_mask_override_coverage[]
[[spirvenv-capabilities-table-samplemaskoverridecoverage]]
| code:SampleMaskOverrideCoverageNV | <<VK_NV_sample_mask_override_coverage,VK_NV_sample_mask_override_coverage>>
endif::VK_NV_sample_mask_override_coverage[]
ifdef::VK_NV_geometry_shader_passthrough[]
[[spirvenv-capabilities-table-geometryshaderpassthrough]]
| code:GeometryShaderPassthroughNV | <<VK_NV_geometry_shader_passthrough,VK_NV_geometry_shader_passthrough>>
endif::VK_NV_geometry_shader_passthrough[]
ifdef::VK_EXT_shader_viewport_index_layer[]
[[spirvenv-capabilities-table-shader-viewport-index-layer]]
| code:ShaderViewportIndexLayerEXT | <<VK_EXT_shader_viewport_index_layer,VK_EXT_shader_viewport_index_layer>>
endif::VK_EXT_shader_viewport_index_layer[]
ifdef::VK_NV_viewport_array2[]
[[spirvenv-capabilities-table-viewportarray2]]
| code:ShaderViewportIndexLayerNV | <<VK_NV_viewport_array2,VK_NV_viewport_array2>>
| code:ShaderViewportMaskNV | <<VK_NV_viewport_array2,VK_NV_viewport_array2>>
endif::VK_NV_viewport_array2[]
ifdef::VK_NVX_multiview_per_view_attributes[]
[[spirvenv-capabilities-table-perviewattributes]]
| code:PerViewAttributesNV | <<VK_NVX_multiview_per_view_attributes,VK_NVX_multiview_per_view_attributes>>
endif::VK_NVX_multiview_per_view_attributes[]
ifdef::VK_KHR_16bit_storage[]
[[spirvenv-capabilities-table-16bitstorage]]
| code:StorageBuffer16BitAccess | <<features-features-storageBuffer16BitAccess, StorageBuffer16BitAccess>>
| code:UniformAndStorageBuffer16BitAccess | <<features-features-uniformAndStorageBuffer16BitAccess,UniformAndStorageBuffer16BitAccess>>
| code:StoragePushConstant16 | <<features-features-storagePushConstant16,storagePushConstant16>>
| code:StorageInputOutput16 | <<features-features-storageInputOutput16,storageInputOutput16>>
endif::VK_KHR_16bit_storage[]
ifdef::VK_EXT_post_depth_coverage[]
[[spirvenv-capabilities-table-postdepthcoverage]]
| code:SampleMaskPostDepthCoverage | <<VK_EXT_post_depth_coverage,VK_EXT_post_depth_coverage>>
endif::VK_EXT_post_depth_coverage[]
|====
ifdef::VK_KHR_variable_pointers[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_KHR_variable_pointers+ SPIR-V extension.
endif::VK_KHR_variable_pointers[]
ifdef::VK_AMD_shader_explicit_vertex_parameter[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_shader_explicit_vertex_parameter+ SPIR-V extension.
endif::VK_AMD_shader_explicit_vertex_parameter[]
ifdef::VK_AMD_gcn_shader[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_gcn_shader+ SPIR-V extension.
endif::VK_AMD_gcn_shader[]
ifdef::VK_AMD_gpu_shader_half_float[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_gpu_shader_half_float+ SPIR-V extension.
endif::VK_AMD_gpu_shader_half_float[]
ifdef::VK_AMD_gpu_shader_int16[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_gpu_shader_int16+ SPIR-V extension.
endif::VK_AMD_gpu_shader_int16[]
ifdef::VK_AMD_shader_ballot[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_shader_ballot+ SPIR-V extension.
endif::VK_AMD_shader_ballot[]
ifdef::VK_AMD_shader_fragment_mask[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_shader_fragment_mask+ SPIR-V extension.
endif::VK_AMD_shader_fragment_mask[]
ifdef::VK_AMD_shader_image_load_store_lod[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_shader_image_load_store_lod+ SPIR-V extension.
endif::VK_AMD_shader_image_load_store_lod[]
ifdef::VK_AMD_shader_trinary_minmax[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_shader_trinary_minmax+ SPIR-V extension.
endif::VK_AMD_shader_trinary_minmax[]
ifdef::VK_AMD_texture_gather_bias_lod[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_AMD_texture_gather_bias_lod+ SPIR-V extension.
endif::VK_AMD_texture_gather_bias_lod[]
ifdef::VK_KHR_shader_draw_parameters[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_KHR_shader_draw_parameters+ SPIR-V extension.
endif::VK_KHR_shader_draw_parameters[]
ifdef::VK_KHR_16bit_storage[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the
https://www.khronos.org/registry/spir-v/extensions/KHR/SPV_KHR_16bit_storage.html[+SPV_KHR_16bit_storage+]
SPIR-V extension.
endif::VK_KHR_16bit_storage[]
ifdef::VK_KHR_storage_buffer_storage_class[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the
https://www.khronos.org/registry/spir-v/extensions/KHR/SPV_KHR_storage_buffer_storage_class.html[+SPV_KHR_storage_buffer_storage_class+]
SPIR-V extension.
endif::VK_KHR_storage_buffer_storage_class[]
ifdef::VK_EXT_post_depth_coverage[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_KHR_post_depth_coverage+ SPIR-V extension.
endif::VK_EXT_post_depth_coverage[]
ifdef::VK_EXT_shader_stencil_export[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_EXT_shader_stencil_export+ SPIR-V extension.
endif::VK_EXT_shader_stencil_export[]
ifdef::VK_EXT_shader_subgroup_ballot[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_KHR_shader_ballot+ SPIR-V extension.
endif::VK_EXT_shader_subgroup_ballot[]
ifdef::VK_EXT_shader_subgroup_vote[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_KHR_subgroup_vote+ SPIR-V extension.
endif::VK_EXT_shader_subgroup_vote[]
ifdef::VK_NV_sample_mask_override_coverage[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_NV_sample_mask_override_coverage+ SPIR-V extension.
endif::VK_NV_sample_mask_override_coverage[]
ifdef::VK_NV_geometry_shader_passthrough[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_NV_geometry_shader_passthrough+ SPIR-V extension.
endif::VK_NV_geometry_shader_passthrough[]
ifdef::VK_NV_viewport_array2[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_NV_viewport_array2+ SPIR-V extension.
endif::VK_NV_viewport_array2[]
ifdef::VK_EXT_shader_viewport_index_layer[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_EXT_shader_viewport_index_layer+ SPIR-V extension.
endif::VK_EXT_shader_viewport_index_layer[]
ifdef::VK_NVX_multiview_per_view_attributes[]
The application can: pass a SPIR-V module to flink:vkCreateShaderModule that
uses the +SPV_NVX_multiview_per_view_attributes+ SPIR-V extension.
endif::VK_NVX_multiview_per_view_attributes[]
The application must: not pass a SPIR-V module containing any of the
following to flink:vkCreateShaderModule:
* any OpCapability not listed above,
* an unsupported capability, or
* a capability which corresponds to a Vulkan feature or extension which
has not been enabled.
[[spirvenv-module-validation]]
== Validation Rules within a Module
A SPIR-V module passed to flink:vkCreateShaderModule must: conform to the
following rules:
* Every entry point must: have no return value and accept no arguments.
* Recursion: The static function-call graph for an entry point must: not
contain cycles.
* The *Logical* addressing model must: be selected.
* *Scope* for execution must: be limited to:
** *Workgroup*
** *Subgroup*
* *Scope* for memory must: be limited to:
** *Device*
** *Workgroup*
** *Invocation*
* *Storage Class* must: be limited to:
** *UniformConstant*
** *Input*
** *Uniform*
** *Output*
** *Workgroup*
** *Private*
** *Function*
** *PushConstant*
** *Image*
ifdef::VK_KHR_storage_buffer_storage_class[]
** *StorageBuffer*
endif::VK_KHR_storage_buffer_storage_class[]
* Any code:OpVariable with an code:Initializer operand must: have one of
the following as its code:Storage code:Class operand:
** *Output*
** *Private*
** *Function*
* The code:OriginLowerLeft execution mode must: not be used; fragment
entry points must: declare code:OriginUpperLeft.
* The code:PixelCenterInteger execution mode must: not be used.
Pixels are always centered at half-integer coordinates.
* Images
** code:OpTypeImage must: declare a scalar 32-bit float or 32-bit integer
type for the "`Sampled Type`".
(code:RelaxedPrecision can: be applied to a sampling instruction and to
the variable holding the result of a sampling instruction.)
** code:OpSampledImage must: only consume an "`Image`" operand whose type
has its "`Sampled`" operand set to 1.
** The [eq]#(u,v)# coordinates used for a code:SubpassData must: be the
<id> of a constant vector [eq]#(0,0)#, or if a layer coordinate is
used, must: be a vector that was formed with constant 0 for the [eq]#u#
and [eq]#v# components.
** The "`Depth`" operand of code:OpTypeImage is ignored.
* Decorations
** The code:GLSLShared and code:GLSLPacked decorations must: not be used.
** The code:Flat, code:NoPerspective, code:Sample, and code:Centroid
decorations must: not be used on variables with storage class other
than code:Input or on variables used in the interface of non-fragment
shader entry points.
** The code:Patch decoration must: not be used on variables in the
interface of a vertex, geometry, or fragment shader stage's entry
point.
ifdef::VK_NV_viewport_array2[]
** The code:ViewportRelativeNV decoration must: only be used on a variable
decorated with code:Layer in the vertex, tessellation evaluation, or
geometry shader stages.
** The code:ViewportRelativeNV decoration must: not be used unless a
variable decorated with one of code:ViewportIndex or
code:ViewportMaskNV is also statically used by the same
code:OpEntryPoint.
** The code:ViewportMaskNV and code:ViewportIndex decorations must: not
both be statically used by one or more code:OpEntryPoint's that form
the vertex processing stages of a graphics pipeline.
endif::VK_NV_viewport_array2[]
ifdef::VK_KHR_16bit_storage[]
** Only the round-to-nearest-even and the round-to-zero rounding modes
can: be used for the code:FPRoundingMode decoration.
** The code:FPRoundingMode decoration can: only be used for the
floating-point conversion instructions as described in the
https://www.khronos.org/registry/spir-v/extensions/KHR/SPV_KHR_16bit_storage.html[+SPV_KHR_16bit_storage+]
SPIR-V extension.
endif::VK_KHR_16bit_storage[]
* code:OpTypeRuntimeArray must: only be used for the last member of an
code:OpTypeStruct
ifdef::VK_KHR_storage_buffer_storage_class[]
that is in the code:StorageBuffer storage class decorated as code:Block,
or
endif::VK_KHR_storage_buffer_storage_class[]
that is in the code:Uniform storage class decorated as code:BufferBlock.
* Linkage: See <<interfaces,Shader Interfaces>> for additional linking and
validation rules.
* Compute Shaders
** For each compute shader entry point, either a code:LocalSize execution
mode or an object decorated with the code:WorkgroupSize decoration
must: be specified.
* Atomic instructions must: declare a scalar 32-bit integer type for the
"`Result Type`".
[[spirvenv-precision-operation]]
== Precision and Operation of SPIR-V Instructions
The following rules apply to both single and double-precision floating point
instructions:
* Positive and negative infinities and positive and negative zeros are
generated as dictated by <<ieee-754,IEEE 754>>, but subject to the
precisions allowed in the following table.
* Dividing a non-zero by a zero results in the appropriately signed
<<ieee-754,IEEE 754>> infinity.
* Any denormalized value input into a shader or potentially generated by
any instruction in a shader may: be flushed to 0.
* The rounding mode cannot: be set and is undefined.
* [eq]##NaN##s may: not be generated.
Instructions that operate on a [eq]#NaN# may: not result in a [eq]#NaN#.
* Support for signaling [eq]##NaN##s is optional: and exceptions are never
raised.
The precision of double-precision instructions is at least that of single
precision.
For single precision (32 bit) instructions, precisions are required: to be
at least as follows, unless decorated with RelaxedPrecision:
.Precision of core SPIR-V Instructions
[options="header"]
|====
| Instruction | Precision
| code:OpFAdd | Correctly rounded.
| code:OpFSub | Correctly rounded.
| code:OpFMul | Correctly rounded.
| code:OpFOrdEqual, code:OpFUnordEqual | Correct result.
| code:OpFOrdLessThan, code:OpFUnordLessThan | Correct result.
| code:OpFOrdGreaterThan, code:OpFUnordGreaterThan | Correct result.
| code:OpFOrdLessThanEqual, code:OpFUnordLessThanEqual | Correct result.
| code:OpFOrdGreaterThanEqual, code:OpFUnordGreaterThanEqual| Correct result.
| code:OpFDiv | 2.5 ULP for b in the range [2^-126^, 2^126^].
| conversions between types | Correctly rounded.
|====
.Precision of GLSL.std.450 Instructions
[options="header"]
|====
|Instruction | Precision
| code:fma() | Inherited from code:OpFMul followed by code:OpFAdd.
| code:exp(x), code:exp2(x) | [eq]#3 {plus} 2 {times} {vert}x{vert}# ULP.
| code:log(), code:log2() | 3 ULP outside the range [eq]#[0.5, 2.0]#. Absolute error < [eq]#2^-21^# inside the range [eq]#[0.5, 2.0]#.
| code:pow(x, y) | Inherited from code:exp2(y {times} code:log2(x)).
| code:sqrt() | Inherited from 1.0 / code:inversesqrt().
| code:inversesqrt() | 2 ULP.
|====
GLSL.std.450 extended instructions specifically defined in terms of the
above instructions inherit the above errors.
GLSL.std.450 extended instructions not listed above and not defined in terms
of the above have undefined precision.
These include, for example, the trigonometric functions and determinant.
For the code:OpSRem and code:OpSMod instructions, if either operand is
negative the result is undefined.
[NOTE]
.Note
====
While the code:OpSRem and code:OpSMod instructions are supported by the
Vulkan environment, they require non-negative values and thus do not enable
additional functionality beyond what code:OpUMod provides.
====
[[spirvenv-image-formats]]
.Compatibility Between SPIR-V Image Formats And Vulkan Formats
Images which are read from or written to by shaders must: have SPIR-V image
formats compatible with the Vulkan image formats backing the image under the
circumstances described for <<textures-operation-validation,texture image
validation>>.
The compatibile formats are:
.SPIR-V and Vulkan Image Format Compatibility
[cols="2*", options="header"]
|====
|SPIR-V Image Format |Compatible Vulkan Format
|code:Rgba32f |ename:VK_FORMAT_R32G32B32A32_SFLOAT
|code:Rgba16f |ename:VK_FORMAT_R16G16B16A16_SFLOAT
|code:R32f |ename:VK_FORMAT_R32_SFLOAT
|code:Rgba8 |ename:VK_FORMAT_R8G8B8A8_UNORM
|code:Rgba8Snorm |ename:VK_FORMAT_R8G8B8A8_SNORM
|code:Rg32f |ename:VK_FORMAT_R32G32_SFLOAT
|code:Rg16f |ename:VK_FORMAT_R16G16_SFLOAT
|code:R11fG11fB10f |ename:VK_FORMAT_B10G11R11_UFLOAT_PACK32
|code:R16f |ename:VK_FORMAT_R16_SFLOAT
|code:Rgba16 |ename:VK_FORMAT_R16G16B16A16_UNORM
|code:Rgb10A2 |ename:VK_FORMAT_A2B10G10R10_UNORM_PACK32
|code:Rg16 |ename:VK_FORMAT_R16G16_UNORM
|code:Rg8 |ename:VK_FORMAT_R8G8_UNORM
|code:R16 |ename:VK_FORMAT_R16_UNORM
|code:R8 |ename:VK_FORMAT_R8_UNORM
|code:Rgba16Snorm |ename:VK_FORMAT_R16G16B16A16_SNORM
|code:Rg16Snorm |ename:VK_FORMAT_R16G16_SNORM
|code:Rg8Snorm |ename:VK_FORMAT_R8G8_SNORM
|code:R16Snorm |ename:VK_FORMAT_R16_SNORM
|code:R8Snorm |ename:VK_FORMAT_R8_SNORM
|code:Rgba32i |ename:VK_FORMAT_R32G32B32A32_SINT
|code:Rgba16i |ename:VK_FORMAT_R16G16B16A16_SINT
|code:Rgba8i |ename:VK_FORMAT_R8G8B8A8_SINT
|code:R32i |ename:VK_FORMAT_R32_SINT
|code:Rg32i |ename:VK_FORMAT_R32G32_SINT
|code:Rg16i |ename:VK_FORMAT_R16G16_SINT
|code:Rg8i |ename:VK_FORMAT_R8G8_SINT
|code:R16i |ename:VK_FORMAT_R16_SINT
|code:R8i |ename:VK_FORMAT_R8_SINT
|code:Rgba32ui |ename:VK_FORMAT_R32G32B32A32_UINT
|code:Rgba16ui |ename:VK_FORMAT_R16G16B16A16_UINT
|code:Rgba8ui |ename:VK_FORMAT_R8G8B8A8_UINT
|code:R32ui |ename:VK_FORMAT_R32_UINT
|code:Rgb10a2ui |ename:VK_FORMAT_A2B10G10R10_UINT_PACK32
|code:Rg32ui |ename:VK_FORMAT_R32G32_UINT
|code:Rg16ui |ename:VK_FORMAT_R16G16_UINT
|code:Rg8ui |ename:VK_FORMAT_R8G8_UINT
|code:R16ui |ename:VK_FORMAT_R16_UINT
|code:R8ui |ename:VK_FORMAT_R8_UINT
|====
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