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