vkCmdTraceRaysKHR(3)

# vkCmdTraceRaysKHR(3) Manual Page

## Name

vkCmdTraceRaysKHR - Initialize a ray tracing dispatch

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## C Specification

To dispatch ray tracing use:

    // Provided by VK_KHR_ray_tracing_pipeline
    void vkCmdTraceRaysKHR(
        VkCommandBuffer                             commandBuffer,
        const VkStridedDeviceAddressRegionKHR*      pRaygenShaderBindingTable,
        const VkStridedDeviceAddressRegionKHR*      pMissShaderBindingTable,
        const VkStridedDeviceAddressRegionKHR*      pHitShaderBindingTable,
        const VkStridedDeviceAddressRegionKHR*      pCallableShaderBindingTable,
        uint32_t                                    width,
        uint32_t                                    height,
        uint32_t                                    depth);

## Parameters

- `commandBuffer` is the command buffer into which the command will be recorded.

- `pRaygenShaderBindingTable` is a VkStridedDeviceAddressRegionKHR that holds the shader binding table data for the ray generation shader stage.

- `pMissShaderBindingTable` is a VkStridedDeviceAddressRegionKHR that holds the shader binding table data for the miss shader stage.

- `pHitShaderBindingTable` is a VkStridedDeviceAddressRegionKHR that holds the shader binding table data for the hit shader stage.

- `pCallableShaderBindingTable` is a VkStridedDeviceAddressRegionKHR that holds the shader binding table data for the callable shader stage.

- `width` is the width of the ray trace query dimensions.

- `height` is height of the ray trace query dimensions.

- `depth` is depth of the ray trace query dimensions.

## Description

When the command is executed, a ray generation group of `width` × `height` × `depth` rays is assembled.

Valid Usage

- VUID-vkCmdTraceRaysKHR-magFilter-04553
  If a VkSampler created with `magFilter` or `minFilter` equal to `VK_FILTER_LINEAR`, `reductionMode` equal to `VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE`, and `compareEnable` equal to `VK_FALSE` is used to sample a VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT`

- VUID-vkCmdTraceRaysKHR-magFilter-09598
  If a VkSampler created with `magFilter` or `minFilter` equal to `VK_FILTER_LINEAR` and `reductionMode` equal to either `VK_SAMPLER_REDUCTION_MODE_MIN` or `VK_SAMPLER_REDUCTION_MODE_MAX` is used to sample a VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT`

- VUID-vkCmdTraceRaysKHR-mipmapMode-04770
  If a VkSampler created with `mipmapMode` equal to `VK_SAMPLER_MIPMAP_MODE_LINEAR`, `reductionMode` equal to `VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE`, and `compareEnable` equal to `VK_FALSE` is used to sample a VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT`

- VUID-vkCmdTraceRaysKHR-mipmapMode-09599
  If a VkSampler created with `mipmapMode` equal to `VK_SAMPLER_MIPMAP_MODE_LINEAR` and `reductionMode` equal to either `VK_SAMPLER_REDUCTION_MODE_MIN` or `VK_SAMPLER_REDUCTION_MODE_MAX` is used to sample a VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT`

- VUID-vkCmdTraceRaysKHR-unnormalizedCoordinates-09635
  If a VkSampler created with `unnormalizedCoordinates` equal to `VK_TRUE` is used to sample a VkImageView as a result of this command, then the image view’s `levelCount` and `layerCount` must be 1

- VUID-vkCmdTraceRaysKHR-None-08609
  If a VkSampler created with `unnormalizedCoordinates` equal to `VK_TRUE` is used to sample a VkImageView as a result of this command, then the image view’s `viewType` must be `VK_IMAGE_VIEW_TYPE_1D` or `VK_IMAGE_VIEW_TYPE_2D`

- VUID-vkCmdTraceRaysKHR-None-08610
  If a VkSampler created with `unnormalizedCoordinates` equal to `VK_TRUE` is used to sample a VkImageView as a result of this command, then the sampler must not be used with any of the SPIR-V `OpImageSample*` or `OpImageSparseSample*` instructions with `ImplicitLod`, `Dref` or `Proj` in their name

- VUID-vkCmdTraceRaysKHR-None-08611
  If a VkSampler created with `unnormalizedCoordinates` equal to `VK_TRUE` is used to sample a VkImageView as a result of this command, then the sampler must not be used with any of the SPIR-V `OpImageSample*` or `OpImageSparseSample*` instructions that includes a LOD bias or any offset values

- VUID-vkCmdTraceRaysKHR-None-06479
  If a VkImageView is sampled with depth comparison, the image view’s format features must contain `VK_FORMAT_FEATURE_2_SAMPLED_IMAGE_DEPTH_COMPARISON_BIT`

- VUID-vkCmdTraceRaysKHR-None-02691
  If a VkImageView is accessed using atomic operations as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT`

- VUID-vkCmdTraceRaysKHR-None-07888
  If a `VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER` descriptor is accessed using atomic operations as a result of this command, then the storage texel buffer’s format features must contain `VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_ATOMIC_BIT`

- VUID-vkCmdTraceRaysKHR-None-02692
  If a VkImageView is sampled with `VK_FILTER_CUBIC_EXT` as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_EXT`

- VUID-vkCmdTraceRaysKHR-None-02693
  If the VK_EXT_filter_cubic extension is not enabled and any VkImageView is sampled with `VK_FILTER_CUBIC_EXT` as a result of this command, it must not have a VkImageViewType of `VK_IMAGE_VIEW_TYPE_3D`, `VK_IMAGE_VIEW_TYPE_CUBE`, or `VK_IMAGE_VIEW_TYPE_CUBE_ARRAY`

- VUID-vkCmdTraceRaysKHR-filterCubic-02694
  Any VkImageView being sampled with `VK_FILTER_CUBIC_EXT` as a result of this command must have a VkImageViewType and format that supports cubic filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::`filterCubic` returned by vkGetPhysicalDeviceImageFormatProperties2

- VUID-vkCmdTraceRaysKHR-filterCubicMinmax-02695
  Any VkImageView being sampled with `VK_FILTER_CUBIC_EXT` with a reduction mode of either `VK_SAMPLER_REDUCTION_MODE_MIN` or `VK_SAMPLER_REDUCTION_MODE_MAX` as a result of this command must have a VkImageViewType and format that supports cubic filtering together with minmax filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::`filterCubicMinmax` returned by vkGetPhysicalDeviceImageFormatProperties2

- VUID-vkCmdTraceRaysKHR-cubicRangeClamp-09212
  If the `cubicRangeClamp` feature is not enabled, then any VkImageView being sampled with `VK_FILTER_CUBIC_EXT` as a result of this command must not have a VkSamplerReductionModeCreateInfo::`reductionMode` equal to `VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE_RANGECLAMP_QCOM`

- VUID-vkCmdTraceRaysKHR-reductionMode-09213
  Any VkImageView being sampled with a VkSamplerReductionModeCreateInfo::`reductionMode` equal to `VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE_RANGECLAMP_QCOM` as a result of this command must sample with `VK_FILTER_CUBIC_EXT`

- VUID-vkCmdTraceRaysKHR-selectableCubicWeights-09214
  If the `selectableCubicWeights` feature is not enabled, then any VkImageView being sampled with `VK_FILTER_CUBIC_EXT` as a result of this command must have VkSamplerCubicWeightsCreateInfoQCOM::`cubicWeights` equal to `VK_CUBIC_FILTER_WEIGHTS_CATMULL_ROM_QCOM`

- VUID-vkCmdTraceRaysKHR-flags-02696
  Any VkImage created with a VkImageCreateInfo::`flags` containing `VK_IMAGE_CREATE_CORNER_SAMPLED_BIT_NV` sampled as a result of this command must only be sampled using a VkSamplerAddressMode of `VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE`

- VUID-vkCmdTraceRaysKHR-OpTypeImage-07027
  For any VkImageView being written as a storage image where the image format field of the `OpTypeImage` is `Unknown`, the view’s format features must contain `VK_FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT`

- VUID-vkCmdTraceRaysKHR-OpTypeImage-07028
  For any VkImageView being read as a storage image where the image format field of the `OpTypeImage` is `Unknown`, the view’s format features must contain `VK_FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT`

- VUID-vkCmdTraceRaysKHR-OpTypeImage-07029
  For any VkBufferView being written as a storage texel buffer where the image format field of the `OpTypeImage` is `Unknown`, the view’s buffer features must contain `VK_FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT`

- VUID-vkCmdTraceRaysKHR-OpTypeImage-07030
  Any VkBufferView being read as a storage texel buffer where the image format field of the `OpTypeImage` is `Unknown` then the view’s buffer features must contain `VK_FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT`

- VUID-vkCmdTraceRaysKHR-None-08600
  For each set n that is statically used by a bound shader, a descriptor set must have been bound to n at the same pipeline bind point, with a VkPipelineLayout that is compatible for set n, with the VkPipelineLayout used to create the current VkPipeline or the VkDescriptorSetLayout array used to create the current VkShaderEXT , as described in [descriptorsets-compatibility]

- VUID-vkCmdTraceRaysKHR-None-08601
  For each push constant that is statically used by a bound shader, a push constant value must have been set for the same pipeline bind point, with a VkPipelineLayout that is compatible for push constants, with the VkPipelineLayout used to create the current VkPipeline or the VkDescriptorSetLayout array used to create the current VkShaderEXT , as described in [descriptorsets-compatibility]

- VUID-vkCmdTraceRaysKHR-None-10068
  For each array of resources that is used by a bound shader, the indices used to access members of the array must be less than the descriptor count for the identified binding in the descriptor sets used by this command

- VUID-vkCmdTraceRaysKHR-maintenance4-08602
  If the `maintenance4` feature is not enabled, then for each push constant that is statically used by a bound shader, a push constant value must have been set for the same pipeline bind point, with a VkPipelineLayout that is compatible for push constants, with the VkPipelineLayout used to create the current VkPipeline or the VkDescriptorSetLayout and VkPushConstantRange arrays used to create the current VkShaderEXT , as described in [descriptorsets-compatibility]

- VUID-vkCmdTraceRaysKHR-None-08114
  Descriptors in each bound descriptor set, specified via vkCmdBindDescriptorSets, must be valid as described by descriptor validity if they are statically used by the VkPipeline bound to the pipeline bind point used by this command and the bound VkPipeline was not created with `VK_PIPELINE_CREATE_DESCRIPTOR_BUFFER_BIT_EXT`

- VUID-vkCmdTraceRaysKHR-None-08115
  If the descriptors used by the VkPipeline bound to the pipeline bind point were specified via vkCmdBindDescriptorSets, the bound VkPipeline must have been created without `VK_PIPELINE_CREATE_DESCRIPTOR_BUFFER_BIT_EXT`

- VUID-vkCmdTraceRaysKHR-None-08116
  Descriptors in bound descriptor buffers, specified via vkCmdSetDescriptorBufferOffsetsEXT, must be valid if they are dynamically used by the VkPipeline bound to the pipeline bind point used by this command and the bound VkPipeline was created with `VK_PIPELINE_CREATE_DESCRIPTOR_BUFFER_BIT_EXT`

- VUID-vkCmdTraceRaysKHR-None-08604
  Descriptors in bound descriptor buffers, specified via vkCmdSetDescriptorBufferOffsetsEXT, must be valid if they are dynamically used by any VkShaderEXT bound to a stage corresponding to the pipeline bind point used by this command

- VUID-vkCmdTraceRaysKHR-None-08117
  If the descriptors used by the VkPipeline bound to the pipeline bind point were specified via vkCmdSetDescriptorBufferOffsetsEXT, the bound VkPipeline must have been created with `VK_PIPELINE_CREATE_DESCRIPTOR_BUFFER_BIT_EXT`

- VUID-vkCmdTraceRaysKHR-None-08119
  If a descriptor is dynamically used with a VkPipeline created with `VK_PIPELINE_CREATE_DESCRIPTOR_BUFFER_BIT_EXT`, the descriptor memory must be resident

- VUID-vkCmdTraceRaysKHR-None-08605
  If a descriptor is dynamically used with a VkShaderEXT created with a `VkDescriptorSetLayout` that was created with `VK_DESCRIPTOR_SET_LAYOUT_CREATE_DESCRIPTOR_BUFFER_BIT_EXT`, the descriptor memory must be resident

- VUID-vkCmdTraceRaysKHR-None-08606
  If the `shaderObject` feature is not enabled, a valid pipeline must be bound to the pipeline bind point used by this command

- VUID-vkCmdTraceRaysKHR-None-08608
  If a pipeline is bound to the pipeline bind point used by this command, there must not have been any calls to dynamic state setting commands for any state specified statically in the VkPipeline object bound to the pipeline bind point used by this command, since that pipeline was bound

- VUID-vkCmdTraceRaysKHR-uniformBuffers-06935
  If any stage of the VkPipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, and that stage was created without enabling either `VK_PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS` or `VK_PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2` for `uniformBuffers`, and the `robustBufferAccess` feature is not enabled, that stage must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point

- VUID-vkCmdTraceRaysKHR-None-08612
  If the `robustBufferAccess` feature is not enabled, and any VkShaderEXT bound to a stage corresponding to the pipeline bind point used by this command accesses a uniform buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point

- VUID-vkCmdTraceRaysKHR-storageBuffers-06936
  If any stage of the VkPipeline object bound to the pipeline bind point used by this command accesses a storage buffer, and that stage was created without enabling either `VK_PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS` or `VK_PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2` for `storageBuffers`, and the `robustBufferAccess` feature is not enabled, that stage must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point

- VUID-vkCmdTraceRaysKHR-None-08613
  If the `robustBufferAccess` feature is not enabled, and any VkShaderEXT bound to a stage corresponding to the pipeline bind point used by this command accesses a storage buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point

- VUID-vkCmdTraceRaysKHR-commandBuffer-02707
  If `commandBuffer` is an unprotected command buffer and `protectedNoFault` is not supported, any resource accessed by bound shaders must not be a protected resource

- VUID-vkCmdTraceRaysKHR-viewType-07752
  If a VkImageView is accessed as a result of this command, then the image view’s `viewType` must match the `Dim` operand of the `OpTypeImage` as described in [spirvenv-image-dimensions]

- VUID-vkCmdTraceRaysKHR-format-07753
  If a VkImageView or VkBufferView is accessed as a result of this command, then the numeric type of the view’s `format` and the `Sampled` `Type` operand of the `OpTypeImage` must match

- VUID-vkCmdTraceRaysKHR-OpImageWrite-08795
  If a VkImageView created with a format other than `VK_FORMAT_A8_UNORM` is accessed using `OpImageWrite` as a result of this command, then the `Type` of the `Texel` operand of that instruction must have at least as many components as the image view’s format

- VUID-vkCmdTraceRaysKHR-OpImageWrite-08796
  If a VkImageView created with the format `VK_FORMAT_A8_UNORM` is accessed using `OpImageWrite` as a result of this command, then the `Type` of the `Texel` operand of that instruction must have four components

- VUID-vkCmdTraceRaysKHR-OpImageWrite-04469
  If a VkBufferView is accessed using `OpImageWrite` as a result of this command, then the `Type` of the `Texel` operand of that instruction must have at least as many components as the buffer view’s format

- VUID-vkCmdTraceRaysKHR-SampledType-04470
  If a VkImageView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the `SampledType` of the `OpTypeImage` operand of that instruction must have a `Width` of 64

- VUID-vkCmdTraceRaysKHR-SampledType-04471
  If a VkImageView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the `SampledType` of the `OpTypeImage` operand of that instruction must have a `Width` of 32

- VUID-vkCmdTraceRaysKHR-SampledType-04472
  If a VkBufferView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the `SampledType` of the `OpTypeImage` operand of that instruction must have a `Width` of 64

- VUID-vkCmdTraceRaysKHR-SampledType-04473
  If a VkBufferView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the `SampledType` of the `OpTypeImage` operand of that instruction must have a `Width` of 32

- VUID-vkCmdTraceRaysKHR-sparseImageInt64Atomics-04474
  If the `sparseImageInt64Atomics` feature is not enabled, VkImage objects created with the `VK_IMAGE_CREATE_SPARSE_RESIDENCY_BIT` flag must not be accessed by atomic instructions through an `OpTypeImage` with a `SampledType` with a `Width` of 64 by this command

- VUID-vkCmdTraceRaysKHR-sparseImageInt64Atomics-04475
  If the `sparseImageInt64Atomics` feature is not enabled, VkBuffer objects created with the `VK_BUFFER_CREATE_SPARSE_RESIDENCY_BIT` flag must not be accessed by atomic instructions through an `OpTypeImage` with a `SampledType` with a `Width` of 64 by this command

- VUID-vkCmdTraceRaysKHR-OpImageWeightedSampleQCOM-06971
  If `OpImageWeightedSampleQCOM` is used to sample a VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_2_WEIGHT_SAMPLED_IMAGE_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageWeightedSampleQCOM-06972
  If `OpImageWeightedSampleQCOM` uses a VkImageView as a sample weight image as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_2_WEIGHT_IMAGE_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageBoxFilterQCOM-06973
  If `OpImageBoxFilterQCOM` is used to sample a VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_2_BOX_FILTER_SAMPLED_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageBlockMatchSSDQCOM-06974
  If `OpImageBlockMatchSSDQCOM` is used to read from an VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageBlockMatchSADQCOM-06975
  If `OpImageBlockMatchSADQCOM` is used to read from an VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageBlockMatchSADQCOM-06976
  If `OpImageBlockMatchSADQCOM` or OpImageBlockMatchSSDQCOM is used to read from a reference image as result of this command, then the specified reference coordinates must not fail integer texel coordinate validation

- VUID-vkCmdTraceRaysKHR-OpImageWeightedSampleQCOM-06977
  If `OpImageWeightedSampleQCOM`, `OpImageBoxFilterQCOM`, `OpImageBlockMatchWindowSSDQCOM`, `OpImageBlockMatchWindowSADQCOM`, `OpImageBlockMatchGatherSSDQCOM`, `OpImageBlockMatchGatherSADQCOM`, `OpImageBlockMatchSSDQCOM`, or `OpImageBlockMatchSADQCOM` uses a VkSampler as a result of this command, then the sampler must have been created with `VK_SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageWeightedSampleQCOM-06978
  If any command other than `OpImageWeightedSampleQCOM`, `OpImageBoxFilterQCOM`, `OpImageBlockMatchWindowSSDQCOM`, `OpImageBlockMatchWindowSADQCOM`, `OpImageBlockMatchGatherSSDQCOM`, `OpImageBlockMatchGatherSADQCOM`, `OpImageBlockMatchSSDQCOM`, or `OpImageBlockMatchSADQCOM` uses a VkSampler as a result of this command, then the sampler must not have been created with `VK_SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageBlockMatchWindow-09215
  If a `OpImageBlockMatchWindow*QCOM` or `OpImageBlockMatchGather*QCOM` instruction is used to read from an VkImageView as a result of this command, then the image view’s format features must contain `VK_FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM`

- VUID-vkCmdTraceRaysKHR-OpImageBlockMatchWindow-09216
  If a `OpImageBlockMatchWindow*QCOM` or `OpImageBlockMatchGather*QCOM` instruction is used to read from an VkImageView as a result of this command, then the image view’s format must be a single-component format

- VUID-vkCmdTraceRaysKHR-OpImageBlockMatchWindow-09217
  If a `OpImageBlockMatchWindow*QCOM` or `OpImageBlockMatchGather*QCOM` read from a reference image as result of this command, then the specified reference coordinates must not fail integer texel coordinate validation

- VUID-vkCmdTraceRaysKHR-None-07288
  Any shader invocation executed by this command must terminate

- VUID-vkCmdTraceRaysKHR-None-09600
  If a descriptor with type equal to any of `VK_DESCRIPTOR_TYPE_SAMPLE_WEIGHT_IMAGE_QCOM`, `VK_DESCRIPTOR_TYPE_BLOCK_MATCH_IMAGE_QCOM`, `VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE`, `VK_DESCRIPTOR_TYPE_STORAGE_IMAGE`, or `VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT` is accessed as a result of this command, all image subresources identified by that descriptor must be in the image layout identified when the descriptor was written

- VUID-vkCmdTraceRaysKHR-commandBuffer-10746
  The `VkDeviceMemory` object allocated from a `VkMemoryHeap` with the `VK_MEMORY_HEAP_TILE_MEMORY_BIT_QCOM` property that is bound to a resource accessed as a result of this command must be the active bound bound tile memory object in `commandBuffer`

- VUID-vkCmdTraceRaysKHR-None-10678
  If this command is recorded inside a tile shading render pass instance, the stages corresponding to the pipeline bind point used by this command must only include `VK_SHADER_STAGE_VERTEX_BIT`, `VK_SHADER_STAGE_FRAGMENT_BIT`, and/or `VK_SHADER_STAGE_COMPUTE_BIT`

- VUID-vkCmdTraceRaysKHR-None-10679
  If this command is recorded where per-tile execution model is enabled, there must be no access to any image while the image was be transitioned to the `VK_IMAGE_LAYOUT_ATTACHMENT_FEEDBACK_LOOP_OPTIMAL_EXT` layout

- VUID-vkCmdTraceRaysKHR-None-03429
  Any shader group handle referenced by this call must have been queried from the bound ray tracing pipeline

- VUID-vkCmdTraceRaysKHR-None-09458
  If the bound ray tracing pipeline state was created with the `VK_DYNAMIC_STATE_RAY_TRACING_PIPELINE_STACK_SIZE_KHR` dynamic state enabled then vkCmdSetRayTracingPipelineStackSizeKHR must have been called in the current command buffer prior to this trace command

- VUID-vkCmdTraceRaysKHR-maxPipelineRayRecursionDepth-03679
  This command must not cause a shader call instruction to be executed from a shader invocation with a recursion depth greater than the value of `maxPipelineRayRecursionDepth` used to create the bound ray tracing pipeline

- VUID-vkCmdTraceRaysKHR-commandBuffer-03635
  `commandBuffer` must not be a protected command buffer

- VUID-vkCmdTraceRaysKHR-size-04023
  The `size` member of `pRayGenShaderBindingTable` must be equal to its `stride` member

- VUID-vkCmdTraceRaysKHR-pRayGenShaderBindingTable-03680
  If the buffer from which `pRayGenShaderBindingTable->deviceAddress` was queried is non-sparse then it must be bound completely and contiguously to a single `VkDeviceMemory` object

- VUID-vkCmdTraceRaysKHR-pRayGenShaderBindingTable-03681
  The buffer from which the `pRayGenShaderBindingTable->deviceAddress` is queried must have been created with the `VK_BUFFER_USAGE_SHADER_BINDING_TABLE_BIT_KHR` usage flag

- VUID-vkCmdTraceRaysKHR-pRayGenShaderBindingTable-03682
  `pRayGenShaderBindingTable->deviceAddress` must be a multiple of `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`shaderGroupBaseAlignment`

- VUID-vkCmdTraceRaysKHR-pMissShaderBindingTable-03683
  If the buffer from which `pMissShaderBindingTable->deviceAddress` was queried is non-sparse then it must be bound completely and contiguously to a single `VkDeviceMemory` object

- VUID-vkCmdTraceRaysKHR-pMissShaderBindingTable-03684
  The buffer from which the `pMissShaderBindingTable->deviceAddress` is queried must have been created with the `VK_BUFFER_USAGE_SHADER_BINDING_TABLE_BIT_KHR` usage flag

- VUID-vkCmdTraceRaysKHR-pMissShaderBindingTable-03685
  `pMissShaderBindingTable->deviceAddress` must be a multiple of `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`shaderGroupBaseAlignment`

- VUID-vkCmdTraceRaysKHR-stride-03686
  `pMissShaderBindingTable->stride` must be a multiple of `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`shaderGroupHandleAlignment`

- VUID-vkCmdTraceRaysKHR-stride-04029
  `pMissShaderBindingTable->stride` must be less than or equal to `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`maxShaderGroupStride`

- VUID-vkCmdTraceRaysKHR-pHitShaderBindingTable-03687
  If the buffer from which `pHitShaderBindingTable->deviceAddress` was queried is non-sparse then it must be bound completely and contiguously to a single `VkDeviceMemory` object

- VUID-vkCmdTraceRaysKHR-pHitShaderBindingTable-03688
  The buffer from which the `pHitShaderBindingTable->deviceAddress` is queried must have been created with the `VK_BUFFER_USAGE_SHADER_BINDING_TABLE_BIT_KHR` usage flag

- VUID-vkCmdTraceRaysKHR-pHitShaderBindingTable-03689
  `pHitShaderBindingTable->deviceAddress` must be a multiple of `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`shaderGroupBaseAlignment`

- VUID-vkCmdTraceRaysKHR-stride-03690
  `pHitShaderBindingTable->stride` must be a multiple of `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`shaderGroupHandleAlignment`

- VUID-vkCmdTraceRaysKHR-stride-04035
  `pHitShaderBindingTable->stride` must be less than or equal to `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`maxShaderGroupStride`

- VUID-vkCmdTraceRaysKHR-pCallableShaderBindingTable-03691
  If the buffer from which `pCallableShaderBindingTable->deviceAddress` was queried is non-sparse then it must be bound completely and contiguously to a single `VkDeviceMemory` object

- VUID-vkCmdTraceRaysKHR-pCallableShaderBindingTable-03692
  The buffer from which the `pCallableShaderBindingTable->deviceAddress` is queried must have been created with the `VK_BUFFER_USAGE_SHADER_BINDING_TABLE_BIT_KHR` usage flag

- VUID-vkCmdTraceRaysKHR-pCallableShaderBindingTable-03693
  `pCallableShaderBindingTable->deviceAddress` must be a multiple of `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`shaderGroupBaseAlignment`

- VUID-vkCmdTraceRaysKHR-stride-03694
  `pCallableShaderBindingTable->stride` must be a multiple of `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`shaderGroupHandleAlignment`

- VUID-vkCmdTraceRaysKHR-stride-04041
  `pCallableShaderBindingTable->stride` must be less than or equal to `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`maxShaderGroupStride`

- VUID-vkCmdTraceRaysKHR-flags-03696
  If the bound ray tracing pipeline was created with `flags` that included `VK_PIPELINE_CREATE_RAY_TRACING_NO_NULL_CLOSEST_HIT_SHADERS_BIT_KHR`, `pHitShaderBindingTable->deviceAddress` must not be zero

- VUID-vkCmdTraceRaysKHR-flags-03697
  If the bound ray tracing pipeline was created with `flags` that included `VK_PIPELINE_CREATE_RAY_TRACING_NO_NULL_INTERSECTION_SHADERS_BIT_KHR`, `pHitShaderBindingTable->deviceAddress` must not be zero

- VUID-vkCmdTraceRaysKHR-flags-03511
  If the bound ray tracing pipeline was created with `flags` that included `VK_PIPELINE_CREATE_RAY_TRACING_NO_NULL_MISS_SHADERS_BIT_KHR`, the shader group handle identified by `pMissShaderBindingTable->deviceAddress` must not be zero

- VUID-vkCmdTraceRaysKHR-flags-03512
  If the bound ray tracing pipeline was created with `flags` that included `VK_PIPELINE_CREATE_RAY_TRACING_NO_NULL_ANY_HIT_SHADERS_BIT_KHR`, entries in the table identified by `pHitShaderBindingTable->deviceAddress` accessed as a result of this command in order to execute an any-hit shader must not be zero

- VUID-vkCmdTraceRaysKHR-flags-03513
  If the bound ray tracing pipeline was created with `flags` that included `VK_PIPELINE_CREATE_RAY_TRACING_NO_NULL_CLOSEST_HIT_SHADERS_BIT_KHR`, entries in the table identified by `pHitShaderBindingTable->deviceAddress` accessed as a result of this command in order to execute a closest hit shader must not be zero

- VUID-vkCmdTraceRaysKHR-flags-03514
  If the bound ray tracing pipeline was created with `flags` that included `VK_PIPELINE_CREATE_RAY_TRACING_NO_NULL_INTERSECTION_SHADERS_BIT_KHR`, entries in the table identified by `pHitShaderBindingTable->deviceAddress` accessed as a result of this command in order to execute an intersection shader must not be zero

- VUID-vkCmdTraceRaysKHR-pHitShaderBindingTable-04735
  Any non-zero hit shader group entries in the table identified by `pHitShaderBindingTable->deviceAddress` accessed by this call from a geometry with a `geometryType` of `VK_GEOMETRY_TYPE_TRIANGLES_KHR` must have been created with `VK_RAY_TRACING_SHADER_GROUP_TYPE_TRIANGLES_HIT_GROUP_KHR`

- VUID-vkCmdTraceRaysKHR-pHitShaderBindingTable-04736
  Any non-zero hit shader group entries in the table identified by `pHitShaderBindingTable->deviceAddress` accessed by this call from a geometry with a `geometryType` of `VK_GEOMETRY_TYPE_AABBS_KHR` must have been created with `VK_RAY_TRACING_SHADER_GROUP_TYPE_PROCEDURAL_HIT_GROUP_KHR`

- VUID-vkCmdTraceRaysKHR-width-03638
  `width` must be less than or equal to `VkPhysicalDeviceLimits`::`maxComputeWorkGroupCount`[0] × `VkPhysicalDeviceLimits`::`maxComputeWorkGroupSize`[0]

- VUID-vkCmdTraceRaysKHR-height-03639
  `height` must be less than or equal to `VkPhysicalDeviceLimits`::`maxComputeWorkGroupCount`[1] × `VkPhysicalDeviceLimits`::`maxComputeWorkGroupSize`[1]

- VUID-vkCmdTraceRaysKHR-depth-03640
  `depth` must be less than or equal to `VkPhysicalDeviceLimits`::`maxComputeWorkGroupCount`[2] × `VkPhysicalDeviceLimits`::`maxComputeWorkGroupSize`[2]

- VUID-vkCmdTraceRaysKHR-width-03641
  `width` × `height` × `depth` must be less than or equal to `VkPhysicalDeviceRayTracingPipelinePropertiesKHR`::`maxRayDispatchInvocationCount`

- VUID-vkCmdTraceRaysKHR-allowClusterAccelerationStructure-10578
  If the traced geometry contains a cluster acceleration structure, then VkRayTracingPipelineClusterAccelerationStructureCreateInfoNV::`allowClusterAccelerationStructure` must have been set for that pipeline

Valid Usage (Implicit)

- VUID-vkCmdTraceRaysKHR-commandBuffer-parameter
  `commandBuffer` must be a valid VkCommandBuffer handle

- VUID-vkCmdTraceRaysKHR-pRaygenShaderBindingTable-parameter
  `pRaygenShaderBindingTable` must be a valid pointer to a valid VkStridedDeviceAddressRegionKHR structure

- VUID-vkCmdTraceRaysKHR-pMissShaderBindingTable-parameter
  `pMissShaderBindingTable` must be a valid pointer to a valid VkStridedDeviceAddressRegionKHR structure

- VUID-vkCmdTraceRaysKHR-pHitShaderBindingTable-parameter
  `pHitShaderBindingTable` must be a valid pointer to a valid VkStridedDeviceAddressRegionKHR structure

- VUID-vkCmdTraceRaysKHR-pCallableShaderBindingTable-parameter
  `pCallableShaderBindingTable` must be a valid pointer to a valid VkStridedDeviceAddressRegionKHR structure

- VUID-vkCmdTraceRaysKHR-commandBuffer-recording
  `commandBuffer` must be in the recording state

- VUID-vkCmdTraceRaysKHR-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support compute operations

- VUID-vkCmdTraceRaysKHR-renderpass
  This command must only be called outside of a render pass instance

- VUID-vkCmdTraceRaysKHR-videocoding
  This command must only be called outside of a video coding scope

Host Synchronization

- Host access to `commandBuffer` must be externally synchronized

- Host access to the `VkCommandPool` that `commandBuffer` was allocated from must be externally synchronized

Command Properties

Command Buffer Levels | Render Pass Scope | Video Coding Scope | Supported Queue Types | Command Type
--- | --- | --- | --- | ---
Primary Secondary | Outside | Outside | Compute | Action

## See Also

VK_KHR_ray_tracing_pipeline, VkCommandBuffer, VkStridedDeviceAddressRegionKHR

## 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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0