Vulkan.Extensions.VK_EXT_mesh_shader

Name

VK_EXT_mesh_shader - device extension

VK_EXT_mesh_shader

Name String

VK_EXT_mesh_shader

Extension Type

Device extension

Registered Extension Number

329

Revision

1

Extension and Version Dependencies

• Requires support for Vulkan 1.0
• Requires VK_KHR_get_physical_device_properties2 to be enabled for any device-level functionality
• Requires VK_KHR_spirv_1_4 to be enabled for any device-level functionality

Contact

• Christoph Kubisch @pixeljetstream%0A*Here describe the issue or question you have about the VK_EXT_mesh_shader extension*

Extension Proposal

VK_EXT_mesh_shader

Other Extension Metadata

Last Modified Date

2022-01-20

Interactions and External Dependencies

• This extension requires SPV_EXT_mesh_shader
• This extension provides API support for GLSL_EXT_mesh_shader
• Interacts with Vulkan 1.1
• Interacts with VK_KHR_multiview
• Interacts with VK_KHR_fragment_shading_rate

Contributors

• Christoph Kubisch, NVIDIA
• Pat Brown, NVIDIA
• Jeff Bolz, NVIDIA
• Daniel Koch, NVIDIA
• Piers Daniell, NVIDIA
• Pierre Boudier, NVIDIA
• Patrick Mours, NVIDIA
• David Zhao Akeley, NVIDIA
• Kedarnath Thangudu, NVIDIA
• Timur Kristóf, Valve
• Hans-Kristian Arntzen, Valve
• Philip Rebohle, Valve
• Mike Blumenkrantz, Valve
• Slawomir Grajewski, Intel
• Michal Pietrasiuk, Intel
• Mariusz Merecki, Intel
• Tom Olson, ARM
• Jan-Harald Fredriksen, ARM
• Sandeep Kakarlapudi, ARM
• Ruihao Zhang, QUALCOMM
• Ricardo Garcia, Igalia, S.L.
• Tobias Hector, AMD
• Stu Smith, AMD

Description

This extension provides a new mechanism allowing applications to generate collections of geometric primitives via programmable mesh shading. It is an alternative to the existing programmable primitive shading pipeline, which relied on generating input primitives by a fixed function assembler as well as fixed function vertex fetch.

This extension also adds support for the following SPIR-V extension in Vulkan:

• SPV_EXT_mesh_shader

New Commands

• cmdDrawMeshTasksEXT

• cmdDrawMeshTasksIndirectCountEXT
• cmdDrawMeshTasksIndirectEXT

New Structures

• DrawMeshTasksIndirectCommandEXT

• Extending PhysicalDeviceFeatures2, DeviceCreateInfo:

  • PhysicalDeviceMeshShaderFeaturesEXT

• Extending PhysicalDeviceProperties2:

  • PhysicalDeviceMeshShaderPropertiesEXT

New Enum Constants

• EXT_MESH_SHADER_EXTENSION_NAME

• EXT_MESH_SHADER_SPEC_VERSION

• Extending PipelineStageFlagBits:

  • PIPELINE_STAGE_MESH_SHADER_BIT_EXT
  • PIPELINE_STAGE_TASK_SHADER_BIT_EXT

• Extending QueryPipelineStatisticFlagBits:

  • QUERY_PIPELINE_STATISTIC_MESH_SHADER_INVOCATIONS_BIT_EXT
  • QUERY_PIPELINE_STATISTIC_TASK_SHADER_INVOCATIONS_BIT_EXT

• Extending QueryType:

  • QUERY_TYPE_MESH_PRIMITIVES_GENERATED_EXT

• Extending ShaderStageFlagBits:

  • SHADER_STAGE_MESH_BIT_EXT
  • SHADER_STAGE_TASK_BIT_EXT

• Extending StructureType:

  • STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_FEATURES_EXT
  • STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_PROPERTIES_EXT

If VK_NV_device_generated_commands is supported:

• Extending IndirectCommandsTokenTypeNV:

  • INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_MESH_TASKS_NV

New or Modified Built-In Variables

• CullPrimitiveEXT

• PrimitivePointIndicesEXT
• PrimitiveLineIndicesEXT
• PrimitiveTriangleIndicesEXT
• (modified)Position
• (modified)PointSize
• (modified)ClipDistance
• (modified)CullDistance
• (modified)PrimitiveId
• (modified)Layer
• (modified)ViewportIndex
• (modified)NumWorkgroups
• (modified)WorkgroupSize
• (modified)WorkgroupId
• (modified)LocalInvocationId
• (modified)GlobalInvocationId
• (modified)LocalInvocationIndex
• (modified)NumSubgroups
• (modified)SubgroupId
• (modified)DrawIndex
• (modified)PrimitiveShadingRateKHR
• (modified)ViewIndex

New SPIR-V Capability

• MeshShadingEXT

Version History

• Revision 1, 2022-03-08 (Christoph Kubisch, Daniel Koch, Patrick Mours)

  • Initial revision

See Also

DrawMeshTasksIndirectCommandEXT, PhysicalDeviceMeshShaderFeaturesEXT, PhysicalDeviceMeshShaderPropertiesEXT, cmdDrawMeshTasksEXT, cmdDrawMeshTasksIndirectCountEXT, cmdDrawMeshTasksIndirectEXT

Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

Documentation

cmdDrawMeshTasksEXT

Arguments

:: forall io. MonadIO io

=> CommandBuffer

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

-> ("groupCountX" ::: Word32)

groupCountX is the number of local workgroups to dispatch in the X dimension.

-> ("groupCountY" ::: Word32)

groupCountY is the number of local workgroups to dispatch in the Y dimension.

-> ("groupCountZ" ::: Word32)

groupCountZ is the number of local workgroups to dispatch in the Z dimension.

-> io ()

vkCmdDrawMeshTasksEXT - Draw mesh task work items

Description

When the command is executed, a global workgroup consisting of groupCountX × groupCountY × groupCountZ local workgroups is assembled.

Valid Usage

• If a Sampler created with magFilter or minFilter equal to FILTER_LINEAR and compareEnable equal to FALSE is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT

• If a Sampler created with mipmapMode equal to SAMPLER_MIPMAP_MODE_LINEAR and compareEnable equal to FALSE is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a ImageView is sampled with depth comparison, the image view’s format features must contain FORMAT_FEATURE_2_SAMPLED_IMAGE_DEPTH_COMPARISON_BIT
• If a ImageView is accessed using atomic operations as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT
• If a ImageView is sampled with FILTER_CUBIC_EXT as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_EXT
• Any ImageView being sampled with FILTER_CUBIC_EXT as a result of this command must have a ImageViewType and format that supports cubic filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubic returned by getPhysicalDeviceImageFormatProperties2
• Any ImageView being sampled with FILTER_CUBIC_EXT with a reduction mode of either SAMPLER_REDUCTION_MODE_MIN or SAMPLER_REDUCTION_MODE_MAX as a result of this command must have a ImageViewType and format that supports cubic filtering together with minmax filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubicMinmax returned by getPhysicalDeviceImageFormatProperties2
• Any Image created with a ImageCreateInfo::flags containing IMAGE_CREATE_CORNER_SAMPLED_BIT_NV sampled as a result of this command must only be sampled using a SamplerAddressMode of SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE
• For any ImageView being written as a storage image where the image format field of the OpTypeImage is Unknown, the view’s format features must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• For any ImageView being read as a storage image where the image format field of the OpTypeImage is Unknown, the view’s format features must contain FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For any BufferView being written as a storage texel buffer where the image format field of the OpTypeImage is Unknown, the view’s buffer features must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• Any BufferView 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 FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For each set n that is statically used by the Pipeline bound to the pipeline bind point used by this command, a descriptor set must have been bound to n at the same pipeline bind point, with a PipelineLayout that is compatible for set n, with the PipelineLayout used to create the current Pipeline, as described in ???
• If the maintenance4 feature is not enabled, then for each push constant that is statically used by the Pipeline bound to the pipeline bind point used by this command, a push constant value must have been set for the same pipeline bind point, with a PipelineLayout that is compatible for push constants, with the PipelineLayout used to create the current Pipeline, as described in ???
• Descriptors in each bound descriptor set, specified via cmdBindDescriptorSets, must be valid if they are statically used by the Pipeline bound to the pipeline bind point used by this command
• A valid pipeline must be bound to the pipeline bind point used by this command
• If the Pipeline object bound to the pipeline bind point used by this command requires any dynamic state, that state must have been set or inherited (if the VK_NV_inherited_viewport_scissor extension is enabled) for commandBuffer, and done so after any previously bound pipeline with the corresponding state not specified as dynamic
• There must not have been any calls to dynamic state setting commands for any state not specified as dynamic in the Pipeline object bound to the pipeline bind point used by this command, since that pipeline was bound
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used to sample from any Image with a ImageView of the type IMAGE_VIEW_TYPE_3D, IMAGE_VIEW_TYPE_CUBE, IMAGE_VIEW_TYPE_1D_ARRAY, IMAGE_VIEW_TYPE_2D_ARRAY or IMAGE_VIEW_TYPE_CUBE_ARRAY, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions with ImplicitLod, Dref or Proj in their name, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions that includes a LOD bias or any offset values, in any shader stage
• If any stage of the Pipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, and that stage was created without enabling either PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_EXT or PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2_EXT 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
• If any stage of the Pipeline object bound to the pipeline bind point used by this command accesses a storage buffer, and that stage was created without enabling either PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_EXT or PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2_EXT 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
• If commandBuffer is an unprotected command buffer and protectedNoFault is not supported, any resource accessed by the Pipeline object bound to the pipeline bind point used by this command must not be a protected resource
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler or ImageView object that enables sampler Y′CBCR conversion, that object must only be used with OpImageSample* or OpImageSparseSample* instructions
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler or ImageView object that enables sampler Y′CBCR conversion, that object must not use the ConstOffset and Offset operands
• If a ImageView 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
• If a BufferView 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
• If a ImageView with a Format 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
• If a ImageView with a Format 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
• If a BufferView with a Format 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
• If a BufferView with a Format 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
• If the sparseImageInt64Atomics feature is not enabled, Image objects created with the 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
• If the sparseImageInt64Atomics feature is not enabled, Buffer objects created with the 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
• If OpImageWeightedSampleQCOM is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_WEIGHT_SAMPLED_IMAGE_BIT_QCOM
• If OpImageWeightedSampleQCOM uses a ImageView as a sample weight image as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_WEIGHT_IMAGE_BIT_QCOM
• If OpImageBoxFilterQCOM is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BOX_FILTER_SAMPLED_BIT_QCOM
• If OpImageBlockMatchSSDQCOM is used to read from an ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM
• If OpImageBlockMatchSADQCOM is used to read from an ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM
• 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.
• If OpImageWeightedSampleQCOM, OpImageBoxFilterQCOM, OpImageBlockMatchSSDQCOM, or OpImageBlockMatchSADQCOM uses a Sampler as a result of this command, then the sampler must have been created with SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM.
• If any command other than OpImageWeightedSampleQCOM, OpImageBoxFilterQCOM, OpImageBlockMatchSSDQCOM, or OpImageBlockMatchSADQCOM uses a Sampler as a result of this command, then the sampler must not have been created with SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM.
• Any shader invocation executed by this command must terminate
• The current render pass must be compatible with the renderPass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• The subpass index of the current render pass must be equal to the subpass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• Every input attachment used by the current subpass must be bound to the pipeline via a descriptor set
• Memory backing image subresources used as attachments in the current render pass must not be written in any way other than as an attachment by this command
• If any recorded command in the current subpass will write to an image subresource as an attachment, this command must not read from the memory backing that image subresource in any other way than as an attachment
• If any recorded command in the current subpass will read from an image subresource used as an attachment in any way other than as an attachment, this command must not write to that image subresource as an attachment
• If the current render pass instance uses a depth/stencil attachment with a read-only layout for the depth aspect, depth writes must be disabled
• If the current render pass instance uses a depth/stencil attachment with a read-only layout for the stencil aspect and stencil test is enabled, all stencil ops must be STENCIL_OP_KEEP
• If the draw is recorded in a render pass instance with multiview enabled, the maximum instance index must be less than or equal to PhysicalDeviceMultiviewProperties::maxMultiviewInstanceIndex
• If the bound graphics pipeline was created with PipelineSampleLocationsStateCreateInfoEXT::sampleLocationsEnable set to TRUE and the current subpass has a depth/stencil attachment, then that attachment must have been created with the IMAGE_CREATE_SAMPLE_LOCATIONS_COMPATIBLE_DEPTH_BIT_EXT bit set
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_SAMPLE_LOCATIONS_EXT dynamic state enabled then cmdSetSampleLocationsEXT must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_SCISSOR_WITH_COUNT dynamic state enabled, then cmdSetViewportWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must match the PipelineViewportStateCreateInfo::scissorCount of the pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_SCISSOR_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, then cmdSetScissorWithCount must have been called in the current command buffer prior to this drawing command, and the scissorCount parameter of cmdSetScissorWithCount must match the PipelineViewportStateCreateInfo::viewportCount of the pipeline
• If the bound graphics pipeline state was created with both the DYNAMIC_STATE_SCISSOR_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic states enabled then both cmdSetViewportWithCount and cmdSetScissorWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must match the scissorCount parameter of cmdSetScissorWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportWScalingStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportWScalingNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportShadingRateImageStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportShadingRatePaletteNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled and a PipelineViewportSwizzleStateCreateInfoNV structure chained from PipelineViewportStateCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportSwizzleStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled and a PipelineViewportExclusiveScissorStateCreateInfoNV structure chained from PipelineViewportStateCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportExclusiveScissorStateCreateInfoNV::exclusiveScissorCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_RASTERIZER_DISCARD_ENABLE dynamic state enabled then cmdSetRasterizerDiscardEnable must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_DEPTH_BIAS_ENABLE dynamic state enabled then cmdSetDepthBiasEnable must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_LOGIC_OP_EXT dynamic state enabled then cmdSetLogicOpEXT must have been called in the current command buffer prior to this drawing command and the logicOp must be a valid LogicOp value
• If the primitiveFragmentShadingRateWithMultipleViewports limit is not supported, the bound graphics pipeline was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, and any of the shader stages of the bound graphics pipeline write to the PrimitiveShadingRateKHR built-in, then cmdSetViewportWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must be 1
• If rasterization is not disabled in the bound graphics pipeline, then for each color attachment in the subpass, if the corresponding image view’s format features do not contain FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT, then the blendEnable member of the corresponding element of the pAttachments member of pColorBlendState must be FALSE
• If rasterization is not disabled in the bound graphics pipeline, and none of the VK_AMD_mixed_attachment_samples extension, the VK_NV_framebuffer_mixed_samples extension, or the multisampledRenderToSingleSampled feature are enabled, then PipelineMultisampleStateCreateInfo::rasterizationSamples must be the same as the current subpass color and/or depth/stencil attachments
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the currently bound graphics pipeline must have been created with a PipelineRenderingCreateInfo::viewMask equal to RenderingInfo::viewMask
• If the current render pass instance was begun with cmdBeginRendering, the currently bound graphics pipeline must have been created with a PipelineRenderingCreateInfo::colorAttachmentCount equal to RenderingInfo::colorAttachmentCount
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::colorAttachmentCount greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a Format equal to the corresponding element of PipelineRenderingCreateInfo::pColorAttachmentFormats used to create the currently bound graphics pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_COLOR_WRITE_ENABLE_EXT dynamic state enabled then cmdSetColorWriteEnableEXT must have been called in the current command buffer prior to this drawing command, and the attachmentCount parameter of cmdSetColorWriteEnableEXT must be greater than or equal to the PipelineColorBlendStateCreateInfo::attachmentCount of the currently bound graphics pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_COLOR_WRITE_ENABLE_EXT dynamic state enabled then cmdSetColorWriteEnableEXT must have been called in the current command buffer prior to this drawing command, and the attachmentCount parameter of cmdSetColorWriteEnableEXT must be less than or equal to the maxColorAttachments member of PhysicalDeviceLimits
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of PipelineRenderingCreateInfo::depthAttachmentFormat used to create the currently bound graphics pipeline must be equal to the Format used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of PipelineRenderingCreateInfo::stencilAttachmentFormat used to create the currently bound graphics pipeline must be equal to the Format used to create RenderingInfo::pStencilAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering and RenderingFragmentShadingRateAttachmentInfoKHR::imageView was not NULL_HANDLE, the currently bound graphics pipeline must have been created with PIPELINE_CREATE_RENDERING_FRAGMENT_SHADING_RATE_ATTACHMENT_BIT_KHR
• If the current render pass instance was begun with cmdBeginRendering and RenderingFragmentDensityMapAttachmentInfoEXT::imageView was not NULL_HANDLE, the currently bound graphics pipeline must have been created with PIPELINE_CREATE_RENDERING_FRAGMENT_DENSITY_MAP_ATTACHMENT_BIT_EXT
• If the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the current render pass instance was begun with cmdBeginRendering with a RenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the corresponding element of the pColorAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pStencilAttachment->imageView
• If the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and the current render pass instance was begun with cmdBeginRendering with a RenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pStencilAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline must have been created with a GraphicsPipelineCreateInfo::renderPass equal to NULL_HANDLE
• If the primitivesGeneratedQueryWithRasterizerDiscard feature is not enabled and the QUERY_TYPE_PRIMITIVES_GENERATED_EXT query is active, rasterization discard must not be enabled.
• If the primitivesGeneratedQueryWithNonZeroStreams feature is not enabled and the QUERY_TYPE_PRIMITIVES_GENERATED_EXT query is active, the bound graphics pipeline must not have been created with a non-zero value in PipelineRasterizationStateStreamCreateInfoEXT::rasterizationStream.
• If the currently bound pipeline was created with the PipelineShaderStageCreateInfo::stage member of an element of GraphicsPipelineCreateInfo::pStages set to SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_TESSELLATION_CONTROL_BIT, SHADER_STAGE_TESSELLATION_EVALUATION_BIT or SHADER_STAGE_GEOMETRY_BIT, then Mesh Shader Queries must not be active
• groupCountX must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupCount[0]
• groupCountY must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupCount[1]
• groupCountZ must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupCount[2]
• The product of groupCountX, groupCountY and groupCountZ must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupTotalCount
• The current pipeline bound to PIPELINE_BIND_POINT_GRAPHICS must contain a shader stage using the MeshEXT Execution Model.

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• 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 CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

'

Command Buffer Levels	Render Pass Scope	Video Coding Scope	Supported Queue Types
Primary Secondary	Inside	Outside	Graphics

See Also

VK_EXT_mesh_shader, CommandBuffer

cmdDrawMeshTasksIndirectEXT

Arguments

:: forall io. MonadIO io

=> CommandBuffer

commandBuffer is the command buffer into which the command is recorded.

-> Buffer

buffer is the buffer containing draw parameters.

-> ("offset" ::: DeviceSize)

offset is the byte offset into buffer where parameters begin.

-> ("drawCount" ::: Word32)

drawCount is the number of draws to execute, and can be zero.

-> ("stride" ::: Word32)

stride is the byte stride between successive sets of draw parameters.

-> io ()

vkCmdDrawMeshTasksIndirectEXT - Issue an indirect mesh tasks draw into a command buffer

Description

cmdDrawMeshTasksIndirectEXT behaves similarly to cmdDrawMeshTasksEXT except that the parameters are read by the device from a buffer during execution. drawCount draws are executed by the command, with parameters taken from buffer starting at offset and increasing by stride bytes for each successive draw. The parameters of each draw are encoded in an array of DrawMeshTasksIndirectCommandEXT structures. If drawCount is less than or equal to one, stride is ignored.

Valid Usage

• If a Sampler created with magFilter or minFilter equal to FILTER_LINEAR and compareEnable equal to FALSE is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT

• If a Sampler created with mipmapMode equal to SAMPLER_MIPMAP_MODE_LINEAR and compareEnable equal to FALSE is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a ImageView is sampled with depth comparison, the image view’s format features must contain FORMAT_FEATURE_2_SAMPLED_IMAGE_DEPTH_COMPARISON_BIT
• If a ImageView is accessed using atomic operations as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT
• If a ImageView is sampled with FILTER_CUBIC_EXT as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_EXT
• Any ImageView being sampled with FILTER_CUBIC_EXT as a result of this command must have a ImageViewType and format that supports cubic filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubic returned by getPhysicalDeviceImageFormatProperties2
• Any ImageView being sampled with FILTER_CUBIC_EXT with a reduction mode of either SAMPLER_REDUCTION_MODE_MIN or SAMPLER_REDUCTION_MODE_MAX as a result of this command must have a ImageViewType and format that supports cubic filtering together with minmax filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubicMinmax returned by getPhysicalDeviceImageFormatProperties2
• Any Image created with a ImageCreateInfo::flags containing IMAGE_CREATE_CORNER_SAMPLED_BIT_NV sampled as a result of this command must only be sampled using a SamplerAddressMode of SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE
• For any ImageView being written as a storage image where the image format field of the OpTypeImage is Unknown, the view’s format features must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• For any ImageView being read as a storage image where the image format field of the OpTypeImage is Unknown, the view’s format features must contain FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For any BufferView being written as a storage texel buffer where the image format field of the OpTypeImage is Unknown, the view’s buffer features must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• Any BufferView 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 FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For each set n that is statically used by the Pipeline bound to the pipeline bind point used by this command, a descriptor set must have been bound to n at the same pipeline bind point, with a PipelineLayout that is compatible for set n, with the PipelineLayout used to create the current Pipeline, as described in ???
• If the maintenance4 feature is not enabled, then for each push constant that is statically used by the Pipeline bound to the pipeline bind point used by this command, a push constant value must have been set for the same pipeline bind point, with a PipelineLayout that is compatible for push constants, with the PipelineLayout used to create the current Pipeline, as described in ???
• Descriptors in each bound descriptor set, specified via cmdBindDescriptorSets, must be valid if they are statically used by the Pipeline bound to the pipeline bind point used by this command
• A valid pipeline must be bound to the pipeline bind point used by this command
• If the Pipeline object bound to the pipeline bind point used by this command requires any dynamic state, that state must have been set or inherited (if the VK_NV_inherited_viewport_scissor extension is enabled) for commandBuffer, and done so after any previously bound pipeline with the corresponding state not specified as dynamic
• There must not have been any calls to dynamic state setting commands for any state not specified as dynamic in the Pipeline object bound to the pipeline bind point used by this command, since that pipeline was bound
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used to sample from any Image with a ImageView of the type IMAGE_VIEW_TYPE_3D, IMAGE_VIEW_TYPE_CUBE, IMAGE_VIEW_TYPE_1D_ARRAY, IMAGE_VIEW_TYPE_2D_ARRAY or IMAGE_VIEW_TYPE_CUBE_ARRAY, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions with ImplicitLod, Dref or Proj in their name, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions that includes a LOD bias or any offset values, in any shader stage
• If any stage of the Pipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, and that stage was created without enabling either PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_EXT or PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2_EXT 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
• If any stage of the Pipeline object bound to the pipeline bind point used by this command accesses a storage buffer, and that stage was created without enabling either PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_EXT or PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2_EXT 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
• If commandBuffer is an unprotected command buffer and protectedNoFault is not supported, any resource accessed by the Pipeline object bound to the pipeline bind point used by this command must not be a protected resource
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler or ImageView object that enables sampler Y′CBCR conversion, that object must only be used with OpImageSample* or OpImageSparseSample* instructions
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler or ImageView object that enables sampler Y′CBCR conversion, that object must not use the ConstOffset and Offset operands
• If a ImageView 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
• If a BufferView 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
• If a ImageView with a Format 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
• If a ImageView with a Format 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
• If a BufferView with a Format 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
• If a BufferView with a Format 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
• If the sparseImageInt64Atomics feature is not enabled, Image objects created with the 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
• If the sparseImageInt64Atomics feature is not enabled, Buffer objects created with the 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
• If OpImageWeightedSampleQCOM is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_WEIGHT_SAMPLED_IMAGE_BIT_QCOM
• If OpImageWeightedSampleQCOM uses a ImageView as a sample weight image as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_WEIGHT_IMAGE_BIT_QCOM
• If OpImageBoxFilterQCOM is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BOX_FILTER_SAMPLED_BIT_QCOM
• If OpImageBlockMatchSSDQCOM is used to read from an ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM
• If OpImageBlockMatchSADQCOM is used to read from an ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM
• 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.
• If OpImageWeightedSampleQCOM, OpImageBoxFilterQCOM, OpImageBlockMatchSSDQCOM, or OpImageBlockMatchSADQCOM uses a Sampler as a result of this command, then the sampler must have been created with SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM.
• If any command other than OpImageWeightedSampleQCOM, OpImageBoxFilterQCOM, OpImageBlockMatchSSDQCOM, or OpImageBlockMatchSADQCOM uses a Sampler as a result of this command, then the sampler must not have been created with SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM.
• Any shader invocation executed by this command must terminate
• The current render pass must be compatible with the renderPass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• The subpass index of the current render pass must be equal to the subpass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• Every input attachment used by the current subpass must be bound to the pipeline via a descriptor set
• Memory backing image subresources used as attachments in the current render pass must not be written in any way other than as an attachment by this command
• If any recorded command in the current subpass will write to an image subresource as an attachment, this command must not read from the memory backing that image subresource in any other way than as an attachment
• If any recorded command in the current subpass will read from an image subresource used as an attachment in any way other than as an attachment, this command must not write to that image subresource as an attachment
• If the current render pass instance uses a depth/stencil attachment with a read-only layout for the depth aspect, depth writes must be disabled
• If the current render pass instance uses a depth/stencil attachment with a read-only layout for the stencil aspect and stencil test is enabled, all stencil ops must be STENCIL_OP_KEEP
• If the draw is recorded in a render pass instance with multiview enabled, the maximum instance index must be less than or equal to PhysicalDeviceMultiviewProperties::maxMultiviewInstanceIndex
• If the bound graphics pipeline was created with PipelineSampleLocationsStateCreateInfoEXT::sampleLocationsEnable set to TRUE and the current subpass has a depth/stencil attachment, then that attachment must have been created with the IMAGE_CREATE_SAMPLE_LOCATIONS_COMPATIBLE_DEPTH_BIT_EXT bit set
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_SAMPLE_LOCATIONS_EXT dynamic state enabled then cmdSetSampleLocationsEXT must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_SCISSOR_WITH_COUNT dynamic state enabled, then cmdSetViewportWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must match the PipelineViewportStateCreateInfo::scissorCount of the pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_SCISSOR_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, then cmdSetScissorWithCount must have been called in the current command buffer prior to this drawing command, and the scissorCount parameter of cmdSetScissorWithCount must match the PipelineViewportStateCreateInfo::viewportCount of the pipeline
• If the bound graphics pipeline state was created with both the DYNAMIC_STATE_SCISSOR_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic states enabled then both cmdSetViewportWithCount and cmdSetScissorWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must match the scissorCount parameter of cmdSetScissorWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportWScalingStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportWScalingNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportShadingRateImageStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportShadingRatePaletteNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled and a PipelineViewportSwizzleStateCreateInfoNV structure chained from PipelineViewportStateCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportSwizzleStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled and a PipelineViewportExclusiveScissorStateCreateInfoNV structure chained from PipelineViewportStateCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportExclusiveScissorStateCreateInfoNV::exclusiveScissorCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_RASTERIZER_DISCARD_ENABLE dynamic state enabled then cmdSetRasterizerDiscardEnable must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_DEPTH_BIAS_ENABLE dynamic state enabled then cmdSetDepthBiasEnable must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_LOGIC_OP_EXT dynamic state enabled then cmdSetLogicOpEXT must have been called in the current command buffer prior to this drawing command and the logicOp must be a valid LogicOp value
• If the primitiveFragmentShadingRateWithMultipleViewports limit is not supported, the bound graphics pipeline was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, and any of the shader stages of the bound graphics pipeline write to the PrimitiveShadingRateKHR built-in, then cmdSetViewportWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must be 1
• If rasterization is not disabled in the bound graphics pipeline, then for each color attachment in the subpass, if the corresponding image view’s format features do not contain FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT, then the blendEnable member of the corresponding element of the pAttachments member of pColorBlendState must be FALSE
• If rasterization is not disabled in the bound graphics pipeline, and none of the VK_AMD_mixed_attachment_samples extension, the VK_NV_framebuffer_mixed_samples extension, or the multisampledRenderToSingleSampled feature are enabled, then PipelineMultisampleStateCreateInfo::rasterizationSamples must be the same as the current subpass color and/or depth/stencil attachments
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the currently bound graphics pipeline must have been created with a PipelineRenderingCreateInfo::viewMask equal to RenderingInfo::viewMask
• If the current render pass instance was begun with cmdBeginRendering, the currently bound graphics pipeline must have been created with a PipelineRenderingCreateInfo::colorAttachmentCount equal to RenderingInfo::colorAttachmentCount
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::colorAttachmentCount greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a Format equal to the corresponding element of PipelineRenderingCreateInfo::pColorAttachmentFormats used to create the currently bound graphics pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_COLOR_WRITE_ENABLE_EXT dynamic state enabled then cmdSetColorWriteEnableEXT must have been called in the current command buffer prior to this drawing command, and the attachmentCount parameter of cmdSetColorWriteEnableEXT must be greater than or equal to the PipelineColorBlendStateCreateInfo::attachmentCount of the currently bound graphics pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_COLOR_WRITE_ENABLE_EXT dynamic state enabled then cmdSetColorWriteEnableEXT must have been called in the current command buffer prior to this drawing command, and the attachmentCount parameter of cmdSetColorWriteEnableEXT must be less than or equal to the maxColorAttachments member of PhysicalDeviceLimits
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of PipelineRenderingCreateInfo::depthAttachmentFormat used to create the currently bound graphics pipeline must be equal to the Format used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of PipelineRenderingCreateInfo::stencilAttachmentFormat used to create the currently bound graphics pipeline must be equal to the Format used to create RenderingInfo::pStencilAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering and RenderingFragmentShadingRateAttachmentInfoKHR::imageView was not NULL_HANDLE, the currently bound graphics pipeline must have been created with PIPELINE_CREATE_RENDERING_FRAGMENT_SHADING_RATE_ATTACHMENT_BIT_KHR
• If the current render pass instance was begun with cmdBeginRendering and RenderingFragmentDensityMapAttachmentInfoEXT::imageView was not NULL_HANDLE, the currently bound graphics pipeline must have been created with PIPELINE_CREATE_RENDERING_FRAGMENT_DENSITY_MAP_ATTACHMENT_BIT_EXT
• If the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the current render pass instance was begun with cmdBeginRendering with a RenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the corresponding element of the pColorAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pStencilAttachment->imageView
• If the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and the current render pass instance was begun with cmdBeginRendering with a RenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pStencilAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline must have been created with a GraphicsPipelineCreateInfo::renderPass equal to NULL_HANDLE
• If the primitivesGeneratedQueryWithRasterizerDiscard feature is not enabled and the QUERY_TYPE_PRIMITIVES_GENERATED_EXT query is active, rasterization discard must not be enabled.
• If the primitivesGeneratedQueryWithNonZeroStreams feature is not enabled and the QUERY_TYPE_PRIMITIVES_GENERATED_EXT query is active, the bound graphics pipeline must not have been created with a non-zero value in PipelineRasterizationStateStreamCreateInfoEXT::rasterizationStream.
• If the currently bound pipeline was created with the PipelineShaderStageCreateInfo::stage member of an element of GraphicsPipelineCreateInfo::pStages set to SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_TESSELLATION_CONTROL_BIT, SHADER_STAGE_TESSELLATION_EVALUATION_BIT or SHADER_STAGE_GEOMETRY_BIT, then Mesh Shader Queries must not be active
• If buffer is non-sparse then it must be bound completely and contiguously to a single DeviceMemory object
• buffer must have been created with the BUFFER_USAGE_INDIRECT_BUFFER_BIT bit set
• offset must be a multiple of 4
• commandBuffer must not be a protected command buffer
• If the multiDrawIndirect feature is not enabled, drawCount must be 0 or 1
• drawCount must be less than or equal to PhysicalDeviceLimits::maxDrawIndirectCount
• If drawCount is greater than 1, stride must be a multiple of 4 and must be greater than or equal to sizeof(DrawMeshTasksIndirectCommandEXT)
• If drawCount is equal to 1, (offset + sizeof(DrawMeshTasksIndirectCommandEXT)) must be less than or equal to the size of buffer
• If drawCount is greater than 1, (stride × (drawCount - 1) + offset + sizeof(DrawMeshTasksIndirectCommandEXT)) must be less than or equal to the size of buffer
• The current pipeline bound to PIPELINE_BIND_POINT_GRAPHICS must contain a shader stage using the MeshEXT Execution Model.

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• buffer must be a valid Buffer handle
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• This command must only be called outside of a video coding scope
• Both of buffer, and commandBuffer must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

'

Command Buffer Levels	Render Pass Scope	Video Coding Scope	Supported Queue Types
Primary Secondary	Inside	Outside	Graphics

See Also

VK_EXT_mesh_shader, Buffer, CommandBuffer, DeviceSize

cmdDrawMeshTasksIndirectCountEXT

Arguments

:: forall io. MonadIO io

=> CommandBuffer

commandBuffer is the command buffer into which the command is recorded.

-> Buffer

buffer is the buffer containing draw parameters.

-> ("offset" ::: DeviceSize)

offset is the byte offset into buffer where parameters begin.

-> ("countBuffer" ::: Buffer)

countBuffer is the buffer containing the draw count.

-> ("countBufferOffset" ::: DeviceSize)

countBufferOffset is the byte offset into countBuffer where the draw count begins.

-> ("maxDrawCount" ::: Word32)

maxDrawCount specifies the maximum number of draws that will be executed. The actual number of executed draw calls is the minimum of the count specified in countBuffer and maxDrawCount.

-> ("stride" ::: Word32)

stride is the byte stride between successive sets of draw parameters.

-> io ()

vkCmdDrawMeshTasksIndirectCountEXT - Perform an indirect mesh tasks draw with the draw count sourced from a buffer

Description

cmdDrawMeshTasksIndirectCountEXT behaves similarly to cmdDrawMeshTasksIndirectEXT except that the draw count is read by the device from a buffer during execution. The command will read an unsigned 32-bit integer from countBuffer located at countBufferOffset and use this as the draw count.

Valid Usage

• If a Sampler created with magFilter or minFilter equal to FILTER_LINEAR and compareEnable equal to FALSE is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT

• If a Sampler created with mipmapMode equal to SAMPLER_MIPMAP_MODE_LINEAR and compareEnable equal to FALSE is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a ImageView is sampled with depth comparison, the image view’s format features must contain FORMAT_FEATURE_2_SAMPLED_IMAGE_DEPTH_COMPARISON_BIT
• If a ImageView is accessed using atomic operations as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT
• If a ImageView is sampled with FILTER_CUBIC_EXT as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_CUBIC_BIT_EXT
• Any ImageView being sampled with FILTER_CUBIC_EXT as a result of this command must have a ImageViewType and format that supports cubic filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubic returned by getPhysicalDeviceImageFormatProperties2
• Any ImageView being sampled with FILTER_CUBIC_EXT with a reduction mode of either SAMPLER_REDUCTION_MODE_MIN or SAMPLER_REDUCTION_MODE_MAX as a result of this command must have a ImageViewType and format that supports cubic filtering together with minmax filtering, as specified by FilterCubicImageViewImageFormatPropertiesEXT::filterCubicMinmax returned by getPhysicalDeviceImageFormatProperties2
• Any Image created with a ImageCreateInfo::flags containing IMAGE_CREATE_CORNER_SAMPLED_BIT_NV sampled as a result of this command must only be sampled using a SamplerAddressMode of SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE
• For any ImageView being written as a storage image where the image format field of the OpTypeImage is Unknown, the view’s format features must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• For any ImageView being read as a storage image where the image format field of the OpTypeImage is Unknown, the view’s format features must contain FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For any BufferView being written as a storage texel buffer where the image format field of the OpTypeImage is Unknown, the view’s buffer features must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• Any BufferView 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 FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For each set n that is statically used by the Pipeline bound to the pipeline bind point used by this command, a descriptor set must have been bound to n at the same pipeline bind point, with a PipelineLayout that is compatible for set n, with the PipelineLayout used to create the current Pipeline, as described in ???
• If the maintenance4 feature is not enabled, then for each push constant that is statically used by the Pipeline bound to the pipeline bind point used by this command, a push constant value must have been set for the same pipeline bind point, with a PipelineLayout that is compatible for push constants, with the PipelineLayout used to create the current Pipeline, as described in ???
• Descriptors in each bound descriptor set, specified via cmdBindDescriptorSets, must be valid if they are statically used by the Pipeline bound to the pipeline bind point used by this command
• A valid pipeline must be bound to the pipeline bind point used by this command
• If the Pipeline object bound to the pipeline bind point used by this command requires any dynamic state, that state must have been set or inherited (if the VK_NV_inherited_viewport_scissor extension is enabled) for commandBuffer, and done so after any previously bound pipeline with the corresponding state not specified as dynamic
• There must not have been any calls to dynamic state setting commands for any state not specified as dynamic in the Pipeline object bound to the pipeline bind point used by this command, since that pipeline was bound
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used to sample from any Image with a ImageView of the type IMAGE_VIEW_TYPE_3D, IMAGE_VIEW_TYPE_CUBE, IMAGE_VIEW_TYPE_1D_ARRAY, IMAGE_VIEW_TYPE_2D_ARRAY or IMAGE_VIEW_TYPE_CUBE_ARRAY, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions with ImplicitLod, Dref or Proj in their name, in any shader stage
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler object that uses unnormalized coordinates, that sampler must not be used with any of the SPIR-V OpImageSample* or OpImageSparseSample* instructions that includes a LOD bias or any offset values, in any shader stage
• If any stage of the Pipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, and that stage was created without enabling either PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_EXT or PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2_EXT 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
• If any stage of the Pipeline object bound to the pipeline bind point used by this command accesses a storage buffer, and that stage was created without enabling either PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_EXT or PIPELINE_ROBUSTNESS_BUFFER_BEHAVIOR_ROBUST_BUFFER_ACCESS_2_EXT 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
• If commandBuffer is an unprotected command buffer and protectedNoFault is not supported, any resource accessed by the Pipeline object bound to the pipeline bind point used by this command must not be a protected resource
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler or ImageView object that enables sampler Y′CBCR conversion, that object must only be used with OpImageSample* or OpImageSparseSample* instructions
• If the Pipeline object bound to the pipeline bind point used by this command accesses a Sampler or ImageView object that enables sampler Y′CBCR conversion, that object must not use the ConstOffset and Offset operands
• If a ImageView 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
• If a BufferView 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
• If a ImageView with a Format 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
• If a ImageView with a Format 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
• If a BufferView with a Format 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
• If a BufferView with a Format 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
• If the sparseImageInt64Atomics feature is not enabled, Image objects created with the 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
• If the sparseImageInt64Atomics feature is not enabled, Buffer objects created with the 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
• If OpImageWeightedSampleQCOM is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_WEIGHT_SAMPLED_IMAGE_BIT_QCOM
• If OpImageWeightedSampleQCOM uses a ImageView as a sample weight image as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_WEIGHT_IMAGE_BIT_QCOM
• If OpImageBoxFilterQCOM is used to sample a ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BOX_FILTER_SAMPLED_BIT_QCOM
• If OpImageBlockMatchSSDQCOM is used to read from an ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM
• If OpImageBlockMatchSADQCOM is used to read from an ImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_2_BLOCK_MATCHING_BIT_QCOM
• 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.
• If OpImageWeightedSampleQCOM, OpImageBoxFilterQCOM, OpImageBlockMatchSSDQCOM, or OpImageBlockMatchSADQCOM uses a Sampler as a result of this command, then the sampler must have been created with SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM.
• If any command other than OpImageWeightedSampleQCOM, OpImageBoxFilterQCOM, OpImageBlockMatchSSDQCOM, or OpImageBlockMatchSADQCOM uses a Sampler as a result of this command, then the sampler must not have been created with SAMPLER_CREATE_IMAGE_PROCESSING_BIT_QCOM.
• Any shader invocation executed by this command must terminate
• The current render pass must be compatible with the renderPass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• The subpass index of the current render pass must be equal to the subpass member of the GraphicsPipelineCreateInfo structure specified when creating the Pipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• Every input attachment used by the current subpass must be bound to the pipeline via a descriptor set
• Memory backing image subresources used as attachments in the current render pass must not be written in any way other than as an attachment by this command
• If any recorded command in the current subpass will write to an image subresource as an attachment, this command must not read from the memory backing that image subresource in any other way than as an attachment
• If any recorded command in the current subpass will read from an image subresource used as an attachment in any way other than as an attachment, this command must not write to that image subresource as an attachment
• If the current render pass instance uses a depth/stencil attachment with a read-only layout for the depth aspect, depth writes must be disabled
• If the current render pass instance uses a depth/stencil attachment with a read-only layout for the stencil aspect and stencil test is enabled, all stencil ops must be STENCIL_OP_KEEP
• If the draw is recorded in a render pass instance with multiview enabled, the maximum instance index must be less than or equal to PhysicalDeviceMultiviewProperties::maxMultiviewInstanceIndex
• If the bound graphics pipeline was created with PipelineSampleLocationsStateCreateInfoEXT::sampleLocationsEnable set to TRUE and the current subpass has a depth/stencil attachment, then that attachment must have been created with the IMAGE_CREATE_SAMPLE_LOCATIONS_COMPATIBLE_DEPTH_BIT_EXT bit set
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_SAMPLE_LOCATIONS_EXT dynamic state enabled then cmdSetSampleLocationsEXT must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_SCISSOR_WITH_COUNT dynamic state enabled, then cmdSetViewportWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must match the PipelineViewportStateCreateInfo::scissorCount of the pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_SCISSOR_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, then cmdSetScissorWithCount must have been called in the current command buffer prior to this drawing command, and the scissorCount parameter of cmdSetScissorWithCount must match the PipelineViewportStateCreateInfo::viewportCount of the pipeline
• If the bound graphics pipeline state was created with both the DYNAMIC_STATE_SCISSOR_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic states enabled then both cmdSetViewportWithCount and cmdSetScissorWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must match the scissorCount parameter of cmdSetScissorWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportWScalingStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_W_SCALING_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportWScalingNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, but not the DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic state enabled, then the bound graphics pipeline must have been created with PipelineViewportShadingRateImageStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT and DYNAMIC_STATE_VIEWPORT_SHADING_RATE_PALETTE_NV dynamic states enabled then the viewportCount parameter in the last call to cmdSetViewportShadingRatePaletteNV must be greater than or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled and a PipelineViewportSwizzleStateCreateInfoNV structure chained from PipelineViewportStateCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportSwizzleStateCreateInfoNV::viewportCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled and a PipelineViewportExclusiveScissorStateCreateInfoNV structure chained from PipelineViewportStateCreateInfo, then the bound graphics pipeline must have been created with PipelineViewportExclusiveScissorStateCreateInfoNV::exclusiveScissorCount greater or equal to the viewportCount parameter in the last call to cmdSetViewportWithCount
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_RASTERIZER_DISCARD_ENABLE dynamic state enabled then cmdSetRasterizerDiscardEnable must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_DEPTH_BIAS_ENABLE dynamic state enabled then cmdSetDepthBiasEnable must have been called in the current command buffer prior to this drawing command
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_LOGIC_OP_EXT dynamic state enabled then cmdSetLogicOpEXT must have been called in the current command buffer prior to this drawing command and the logicOp must be a valid LogicOp value
• If the primitiveFragmentShadingRateWithMultipleViewports limit is not supported, the bound graphics pipeline was created with the DYNAMIC_STATE_VIEWPORT_WITH_COUNT dynamic state enabled, and any of the shader stages of the bound graphics pipeline write to the PrimitiveShadingRateKHR built-in, then cmdSetViewportWithCount must have been called in the current command buffer prior to this drawing command, and the viewportCount parameter of cmdSetViewportWithCount must be 1
• If rasterization is not disabled in the bound graphics pipeline, then for each color attachment in the subpass, if the corresponding image view’s format features do not contain FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT, then the blendEnable member of the corresponding element of the pAttachments member of pColorBlendState must be FALSE
• If rasterization is not disabled in the bound graphics pipeline, and none of the VK_AMD_mixed_attachment_samples extension, the VK_NV_framebuffer_mixed_samples extension, or the multisampledRenderToSingleSampled feature are enabled, then PipelineMultisampleStateCreateInfo::rasterizationSamples must be the same as the current subpass color and/or depth/stencil attachments
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pDepthAttachment is not NULL_HANDLE, and the layout member of pDepthAttachment is IMAGE_LAYOUT_DEPTH_READ_ONLY_OPTIMAL, this command must not write any values to the depth attachment
• If the current render pass instance was begun with cmdBeginRendering, the imageView member of pStencilAttachment is not NULL_HANDLE, and the layout member of pStencilAttachment is IMAGE_LAYOUT_STENCIL_READ_ONLY_OPTIMAL, this command must not write any values to the stencil attachment
• If the current render pass instance was begun with cmdBeginRendering, the currently bound graphics pipeline must have been created with a PipelineRenderingCreateInfo::viewMask equal to RenderingInfo::viewMask
• If the current render pass instance was begun with cmdBeginRendering, the currently bound graphics pipeline must have been created with a PipelineRenderingCreateInfo::colorAttachmentCount equal to RenderingInfo::colorAttachmentCount
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::colorAttachmentCount greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a Format equal to the corresponding element of PipelineRenderingCreateInfo::pColorAttachmentFormats used to create the currently bound graphics pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_COLOR_WRITE_ENABLE_EXT dynamic state enabled then cmdSetColorWriteEnableEXT must have been called in the current command buffer prior to this drawing command, and the attachmentCount parameter of cmdSetColorWriteEnableEXT must be greater than or equal to the PipelineColorBlendStateCreateInfo::attachmentCount of the currently bound graphics pipeline
• If the bound graphics pipeline state was created with the DYNAMIC_STATE_COLOR_WRITE_ENABLE_EXT dynamic state enabled then cmdSetColorWriteEnableEXT must have been called in the current command buffer prior to this drawing command, and the attachmentCount parameter of cmdSetColorWriteEnableEXT must be less than or equal to the maxColorAttachments member of PhysicalDeviceLimits
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of PipelineRenderingCreateInfo::depthAttachmentFormat used to create the currently bound graphics pipeline must be equal to the Format used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of PipelineRenderingCreateInfo::stencilAttachmentFormat used to create the currently bound graphics pipeline must be equal to the Format used to create RenderingInfo::pStencilAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering and RenderingFragmentShadingRateAttachmentInfoKHR::imageView was not NULL_HANDLE, the currently bound graphics pipeline must have been created with PIPELINE_CREATE_RENDERING_FRAGMENT_SHADING_RATE_ATTACHMENT_BIT_KHR
• If the current render pass instance was begun with cmdBeginRendering and RenderingFragmentDensityMapAttachmentInfoEXT::imageView was not NULL_HANDLE, the currently bound graphics pipeline must have been created with PIPELINE_CREATE_RENDERING_FRAGMENT_DENSITY_MAP_ATTACHMENT_BIT_EXT
• If the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the current render pass instance was begun with cmdBeginRendering with a RenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the corresponding element of the pColorAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created with a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pStencilAttachment->imageView
• If the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and the current render pass instance was begun with cmdBeginRendering with a RenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the RenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and RenderingInfo::pDepthAttachment->imageView was not NULL_HANDLE, the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pDepthAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline was created without a AttachmentSampleCountInfoAMD or AttachmentSampleCountInfoNV structure, and the multisampledRenderToSingleSampled feature is not enabled, and RenderingInfo::pStencilAttachment->imageView was not NULL_HANDLE, the value of PipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create RenderingInfo::pStencilAttachment->imageView
• If the current render pass instance was begun with cmdBeginRendering, the currently bound pipeline must have been created with a GraphicsPipelineCreateInfo::renderPass equal to NULL_HANDLE
• If the primitivesGeneratedQueryWithRasterizerDiscard feature is not enabled and the QUERY_TYPE_PRIMITIVES_GENERATED_EXT query is active, rasterization discard must not be enabled.
• If the primitivesGeneratedQueryWithNonZeroStreams feature is not enabled and the QUERY_TYPE_PRIMITIVES_GENERATED_EXT query is active, the bound graphics pipeline must not have been created with a non-zero value in PipelineRasterizationStateStreamCreateInfoEXT::rasterizationStream.
• If the currently bound pipeline was created with the PipelineShaderStageCreateInfo::stage member of an element of GraphicsPipelineCreateInfo::pStages set to SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_TESSELLATION_CONTROL_BIT, SHADER_STAGE_TESSELLATION_EVALUATION_BIT or SHADER_STAGE_GEOMETRY_BIT, then Mesh Shader Queries must not be active
• If buffer is non-sparse then it must be bound completely and contiguously to a single DeviceMemory object
• buffer must have been created with the BUFFER_USAGE_INDIRECT_BUFFER_BIT bit set
• offset must be a multiple of 4
• commandBuffer must not be a protected command buffer
• If countBuffer is non-sparse then it must be bound completely and contiguously to a single DeviceMemory object
• countBuffer must have been created with the BUFFER_USAGE_INDIRECT_BUFFER_BIT bit set
• countBufferOffset must be a multiple of 4
• The count stored in countBuffer must be less than or equal to PhysicalDeviceLimits::maxDrawIndirectCount
• (countBufferOffset + sizeof(uint32_t)) must be less than or equal to the size of countBuffer
• If drawIndirectCount is not enabled this function must not be used
• stride must be a multiple of 4 and must be greater than or equal to sizeof(DrawMeshTasksIndirectCommandEXT)
• If maxDrawCount is greater than or equal to 1, (stride × (maxDrawCount - 1) + offset + sizeof(DrawMeshTasksIndirectCommandEXT)) must be less than or equal to the size of buffer
• If the count stored in countBuffer is equal to 1, (offset + sizeof(DrawMeshTasksIndirectCommandEXT)) must be less than or equal to the size of buffer
• If the count stored in countBuffer is greater than 1, (stride × (drawCount - 1) + offset + sizeof(DrawMeshTasksIndirectCommandEXT)) must be less than or equal to the size of buffer
• The current pipeline bound to PIPELINE_BIND_POINT_GRAPHICS must contain a shader stage using the MeshEXT Execution Model.

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• buffer must be a valid Buffer handle
• countBuffer must be a valid Buffer handle
• commandBuffer must be in the recording state
• The CommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• This command must only be called outside of a video coding scope
• Each of buffer, commandBuffer, and countBuffer must have been created, allocated, or retrieved from the same Device

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

'

Command Buffer Levels	Render Pass Scope	Video Coding Scope	Supported Queue Types
Primary Secondary	Inside	Outside	Graphics

See Also

VK_EXT_mesh_shader, Buffer, CommandBuffer, DeviceSize

data PhysicalDeviceMeshShaderFeaturesEXT

VkPhysicalDeviceMeshShaderFeaturesEXT - Structure describing mesh shading features that can be supported by an implementation

Description

If the PhysicalDeviceMeshShaderFeaturesEXT structure is included in the pNext chain of the PhysicalDeviceFeatures2 structure passed to getPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. PhysicalDeviceMeshShaderFeaturesEXT can also be used in the pNext chain of DeviceCreateInfo to selectively enable these features.

The corresponding features of the PhysicalDeviceMeshShaderFeaturesNV structure must match those in PhysicalDeviceMeshShaderFeaturesEXT.

Valid Usage

• If multiviewMeshShader is enabled then PhysicalDeviceMultiviewFeaturesKHR::multiview must also be enabled

• If primitiveFragmentShadingRateMeshShader is enabled then PhysicalDeviceFragmentShadingRateFeaturesKHR::primitiveFragmentShadingRate must also be enabled

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_FEATURES_EXT

See Also

VK_EXT_mesh_shader, Bool32, StructureType

Constructors

PhysicalDeviceMeshShaderFeaturesEXT

Fields

• taskShader :: Bool

  taskShader specifies whether task shaders are supported. If this feature is not enabled, the SHADER_STAGE_TASK_BIT_EXT and PIPELINE_STAGE_TASK_SHADER_BIT_EXT enum values must not be used.

• meshShader :: Bool

  meshShader specifies whether mesh shaders are supported. If this feature is not enabled, the SHADER_STAGE_MESH_BIT_EXT and PIPELINE_STAGE_MESH_SHADER_BIT_EXT enum values must not be used.

• multiviewMeshShader :: Bool

  multiviewMeshShader specifies whether the implementation supports multiview rendering within a render pass, with mesh shaders. If this feature is not enabled, then a pipeline compiled against a subpass with a non-zero view mask must not include a mesh shader.

• primitiveFragmentShadingRateMeshShader :: Bool

  primitiveFragmentShadingRateMeshShader indicates that the implementation supports the primitive fragment shading rate in mesh shaders.

• meshShaderQueries :: Bool

  meshShaderQueries indicates that the implementation supports creating query pools using the QUERY_TYPE_MESH_PRIMITIVES_GENERATED_EXT query type and statistic queries containing the QUERY_PIPELINE_STATISTIC_TASK_SHADER_INVOCATIONS_BIT_EXT and QUERY_PIPELINE_STATISTIC_MESH_SHADER_INVOCATIONS_BIT_EXT flags

Instances

Eq PhysicalDeviceMeshShaderFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

(==) :: PhysicalDeviceMeshShaderFeaturesEXT -> PhysicalDeviceMeshShaderFeaturesEXT -> Bool

(/=) :: PhysicalDeviceMeshShaderFeaturesEXT -> PhysicalDeviceMeshShaderFeaturesEXT -> Bool

Show PhysicalDeviceMeshShaderFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

showsPrec :: Int -> PhysicalDeviceMeshShaderFeaturesEXT -> ShowS

show :: PhysicalDeviceMeshShaderFeaturesEXT -> String

showList :: [PhysicalDeviceMeshShaderFeaturesEXT] -> ShowS

Storable PhysicalDeviceMeshShaderFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

sizeOf :: PhysicalDeviceMeshShaderFeaturesEXT -> Int

alignment :: PhysicalDeviceMeshShaderFeaturesEXT -> Int

peekElemOff :: Ptr PhysicalDeviceMeshShaderFeaturesEXT -> Int -> IO PhysicalDeviceMeshShaderFeaturesEXT

pokeElemOff :: Ptr PhysicalDeviceMeshShaderFeaturesEXT -> Int -> PhysicalDeviceMeshShaderFeaturesEXT -> IO ()

peekByteOff :: Ptr b -> Int -> IO PhysicalDeviceMeshShaderFeaturesEXT

pokeByteOff :: Ptr b -> Int -> PhysicalDeviceMeshShaderFeaturesEXT -> IO ()

peek :: Ptr PhysicalDeviceMeshShaderFeaturesEXT -> IO PhysicalDeviceMeshShaderFeaturesEXT

poke :: Ptr PhysicalDeviceMeshShaderFeaturesEXT -> PhysicalDeviceMeshShaderFeaturesEXT -> IO ()

FromCStruct PhysicalDeviceMeshShaderFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

peekCStruct :: Ptr PhysicalDeviceMeshShaderFeaturesEXT -> IO PhysicalDeviceMeshShaderFeaturesEXT

ToCStruct PhysicalDeviceMeshShaderFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

withCStruct :: PhysicalDeviceMeshShaderFeaturesEXT -> (Ptr PhysicalDeviceMeshShaderFeaturesEXT -> IO b) -> IO b

pokeCStruct :: Ptr PhysicalDeviceMeshShaderFeaturesEXT -> PhysicalDeviceMeshShaderFeaturesEXT -> IO b -> IO b

withZeroCStruct :: (Ptr PhysicalDeviceMeshShaderFeaturesEXT -> IO b) -> IO b

pokeZeroCStruct :: Ptr PhysicalDeviceMeshShaderFeaturesEXT -> IO b -> IO b

cStructSize :: Int

cStructAlignment :: Int

Zero PhysicalDeviceMeshShaderFeaturesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

zero :: PhysicalDeviceMeshShaderFeaturesEXT

data PhysicalDeviceMeshShaderPropertiesEXT

VkPhysicalDeviceMeshShaderPropertiesEXT - Structure describing mesh shading properties

Members

The members of the PhysicalDeviceMeshShaderPropertiesEXT structure describe the following implementation-dependent limits:

Description

If the PhysicalDeviceMeshShaderPropertiesEXT structure is included in the pNext chain of PhysicalDeviceProperties2, it is filled with the implementation-dependent limits.

Valid Usage (Implicit)

See Also

VK_EXT_mesh_shader, Bool32, StructureType

Constructors

PhysicalDeviceMeshShaderPropertiesEXT

Fields

• maxTaskWorkGroupTotalCount :: Word32

  maxTaskWorkGroupTotalCount is the maximum number of total local workgroups that can be launched by a single mesh tasks drawing command. See https://registry.khronos.org/vulkan/specs/1.3-extensions/html/vkspec.html#drawing-mesh-shading.

• maxTaskWorkGroupCount :: (Word32, Word32, Word32)

  maxTaskWorkGroupCount[3] is the maximum number of local workgroups that can be launched by a single mesh tasks drawing command. These three values represent the maximum number of local workgroups for the X, Y, and Z dimensions, respectively. The workgroup count parameters to the drawing commands must be less than or equal to the corresponding limit. The product of these dimensions must be less than or equal to maxTaskWorkGroupTotalCount.

• maxTaskWorkGroupInvocations :: Word32

  maxTaskWorkGroupInvocations is the maximum total number of task shader invocations in a single local workgroup. The product of the X, Y, and Z sizes, as specified by the LocalSize or LocalSizeId execution mode in shader modules or by the object decorated by the WorkgroupSize decoration, must be less than or equal to this limit.

• maxTaskWorkGroupSize :: (Word32, Word32, Word32)

  maxTaskWorkGroupSize[3] is the maximum size of a local task workgroup, per dimension. These three values represent the maximum local workgroup size in the X, Y, and Z dimensions, respectively. The x, y, and z sizes, as specified by the LocalSize or LocalSizeId execution mode or by the object decorated by the WorkgroupSize decoration in shader modules, must be less than or equal to the corresponding limit.

• maxTaskPayloadSize :: Word32

  maxTaskPayloadSize is the maximum total storage size, in bytes, available for variables declared with the TaskPayloadWorkgroupEXT storage class in shader modules in the task shader stage.

• maxTaskSharedMemorySize :: Word32

  maxTaskSharedMemorySize is the maximum total storage size, in bytes, available for variables declared with the Workgroup storage class in shader modules in the task shader stage.

• maxTaskPayloadAndSharedMemorySize :: Word32

  maxTaskPayloadAndSharedMemorySize is the maximum total storage size, in bytes, available for variables that are declared with the TaskPayloadWorkgroupEXT or Workgroup storage class, in shader modules in the task shader stage.

• maxMeshWorkGroupTotalCount :: Word32

  maxMeshWorkGroupTotalCount is the maximum number of local output tasks a single task shader workgroup can emit.

• maxMeshWorkGroupCount :: (Word32, Word32, Word32)

  maxMeshWorkGroupCount[3] is the maximum number of local output tasks a single task shader workgroup can emit, per dimension. These three values represent the maximum number of local output tasks for the X, Y, and Z dimensions, respectively. The workgroup count parameters to the OpEmitMeshTasksEXT must be less than or equal to the corresponding limit. The product of these dimensions must be less than or equal to maxMeshWorkGroupTotalCount.

• maxMeshWorkGroupInvocations :: Word32

  maxMeshWorkGroupInvocations is the maximum total number of mesh shader invocations in a single local workgroup. The product of the X, Y, and Z sizes, as specified by the LocalSize or LocalSizeId execution mode in shader modules or by the object decorated by the WorkgroupSize decoration, must be less than or equal to this limit.

• maxMeshWorkGroupSize :: (Word32, Word32, Word32)

  maxMeshWorkGroupSize[3] is the maximum size of a local mesh workgroup, per dimension. These three values represent the maximum local workgroup size in the X, Y, and Z dimensions, respectively. The x, y, and z sizes, as specified by the LocalSize or LocalSizeId execution mode or by the object decorated by the WorkgroupSize decoration in shader modules, must be less than or equal to the corresponding limit.

• maxMeshSharedMemorySize :: Word32

  maxMeshSharedMemorySize is the maximum total storage size, in bytes, available for variables declared with the Workgroup storage class in shader modules in the mesh shader stage.

• maxMeshPayloadAndSharedMemorySize :: Word32

  maxMeshPayloadAndSharedMemorySize is the maximum total storage size, in bytes, available for variables that are declared with the TaskPayloadWorkgroupEXT or Workgroup storage class in shader modules in the mesh shader stage.

• maxMeshOutputMemorySize :: Word32

  maxMeshOutputMemorySize is the maximum total storage size, in bytes, available for output variables in shader modules in the mesh shader stage, according to the formula in Mesh Shader Output.

• maxMeshPayloadAndOutputMemorySize :: Word32

  maxMeshPayloadAndOutputMemorySize is the maximum total storage size, in bytes, available for variables that are declared with the TaskPayloadWorkgroupEXT storage class, or output variables in shader modules in the mesh shader stage, according to the formula in Mesh Shader Output.

• maxMeshOutputComponents :: Word32

  maxMeshOutputComponents is the maximum number of components of output variables which can be output from the mesh shader stage.

• maxMeshOutputVertices :: Word32

  maxMeshOutputVertices is the maximum number of vertices which can be emitted by a single mesh shader workgroup.

• maxMeshOutputPrimitives :: Word32

  maxMeshOutputPrimitives is the maximum number of primitives which can be emitted by a single mesh shader workgroup.

• maxMeshOutputLayers :: Word32

  maxMeshOutputLayers is one greater than the maximum layer index that can be output from the mesh shader stage.

• maxMeshMultiviewViewCount :: Word32

  maxMeshMultiviewViewCount is one greater than the maximum view index that can be used by any mesh shader.

• meshOutputPerVertexGranularity :: Word32

  meshOutputPerVertexGranularity is the granularity of vertex allocation. The number of output vertices allocated for the mesh shader stage is padded to a multiple of this number. The value can be used to calculate the required storage size for output variables in shader modules in the mesh shader stage, which must be less than or equal to maxMeshOutputMemorySize.

• meshOutputPerPrimitiveGranularity :: Word32

  meshOutputPerPrimitiveGranularity is the granularity of primitive allocation. The number of output primitives allocated for the mesh shader stage is padded to a multiple of this number. The value can be used to calculate the required storage size for output variables in shader modules in the mesh shader stage, which must be less than or equal to maxMeshOutputMemorySize.

• maxPreferredTaskWorkGroupInvocations :: Word32

  maxPreferredTaskWorkGroupInvocations is the maximum number of task shader invocations in a single workgroup that is preferred by the implementation for optimal performance. The value is guaranteed to be a multiple of a supported subgroup size for the task shader stage.

• maxPreferredMeshWorkGroupInvocations :: Word32

  maxPreferredMeshWorkGroupInvocations is the maximum number of mesh shader invocations in a single workgroup that is preferred by the implementation for optimal performance. The value is guaranteed to be a multiple of a supported subgroup size for the mesh shader stage.

• prefersLocalInvocationVertexOutput :: Bool

  prefersLocalInvocationVertexOutput specifies whether writes to the vertex output array in a mesh shader yield best performance when the array index matches LocalInvocationIndex.

• prefersLocalInvocationPrimitiveOutput :: Bool

  prefersLocalInvocationPrimitiveOutput specifies whether writes to the primitive output array in a mesh shader yield best performance when the array index matches LocalInvocationIndex.

• prefersCompactVertexOutput :: Bool

  prefersCompactVertexOutput specifies whether output vertices should be compacted after custom culling in the mesh shader for best performance, otherwise keeping the vertices at their original location may be better.

• prefersCompactPrimitiveOutput :: Bool

  prefersCompactPrimitiveOutput specifies whether output primitives should be compacted after custom culling in the mesh shader for best performance, otherwise the use of CullPrimitiveEXT may be better.

Instances

Eq PhysicalDeviceMeshShaderPropertiesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

(==) :: PhysicalDeviceMeshShaderPropertiesEXT -> PhysicalDeviceMeshShaderPropertiesEXT -> Bool

(/=) :: PhysicalDeviceMeshShaderPropertiesEXT -> PhysicalDeviceMeshShaderPropertiesEXT -> Bool

Show PhysicalDeviceMeshShaderPropertiesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

showsPrec :: Int -> PhysicalDeviceMeshShaderPropertiesEXT -> ShowS

show :: PhysicalDeviceMeshShaderPropertiesEXT -> String

showList :: [PhysicalDeviceMeshShaderPropertiesEXT] -> ShowS

Storable PhysicalDeviceMeshShaderPropertiesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

sizeOf :: PhysicalDeviceMeshShaderPropertiesEXT -> Int

alignment :: PhysicalDeviceMeshShaderPropertiesEXT -> Int

peekElemOff :: Ptr PhysicalDeviceMeshShaderPropertiesEXT -> Int -> IO PhysicalDeviceMeshShaderPropertiesEXT

pokeElemOff :: Ptr PhysicalDeviceMeshShaderPropertiesEXT -> Int -> PhysicalDeviceMeshShaderPropertiesEXT -> IO ()

peekByteOff :: Ptr b -> Int -> IO PhysicalDeviceMeshShaderPropertiesEXT

pokeByteOff :: Ptr b -> Int -> PhysicalDeviceMeshShaderPropertiesEXT -> IO ()

peek :: Ptr PhysicalDeviceMeshShaderPropertiesEXT -> IO PhysicalDeviceMeshShaderPropertiesEXT

poke :: Ptr PhysicalDeviceMeshShaderPropertiesEXT -> PhysicalDeviceMeshShaderPropertiesEXT -> IO ()

FromCStruct PhysicalDeviceMeshShaderPropertiesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

peekCStruct :: Ptr PhysicalDeviceMeshShaderPropertiesEXT -> IO PhysicalDeviceMeshShaderPropertiesEXT

ToCStruct PhysicalDeviceMeshShaderPropertiesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

withCStruct :: PhysicalDeviceMeshShaderPropertiesEXT -> (Ptr PhysicalDeviceMeshShaderPropertiesEXT -> IO b) -> IO b

pokeCStruct :: Ptr PhysicalDeviceMeshShaderPropertiesEXT -> PhysicalDeviceMeshShaderPropertiesEXT -> IO b -> IO b

withZeroCStruct :: (Ptr PhysicalDeviceMeshShaderPropertiesEXT -> IO b) -> IO b

pokeZeroCStruct :: Ptr PhysicalDeviceMeshShaderPropertiesEXT -> IO b -> IO b

cStructSize :: Int

cStructAlignment :: Int

Zero PhysicalDeviceMeshShaderPropertiesEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

zero :: PhysicalDeviceMeshShaderPropertiesEXT

data DrawMeshTasksIndirectCommandEXT

VkDrawMeshTasksIndirectCommandEXT - Structure specifying a mesh tasks draw indirect command

Description

The members of DrawMeshTasksIndirectCommandEXT have the same meaning as the similarly named parameters of cmdDrawMeshTasksEXT.

Valid Usage

• groupCountX must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupCount[0]

• groupCountY must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupCount[1]
• groupCountZ must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupCount[2]
• The product of groupCountX, groupCountY and groupCountZ must be less than or equal to PhysicalDeviceMeshShaderPropertiesEXT::maxTaskWorkGroupTotalCount

See Also

VK_EXT_mesh_shader, cmdDrawMeshTasksIndirectEXT

Constructors

DrawMeshTasksIndirectCommandEXT

Fields

• groupCountX :: Word32

  groupCountX is the number of local workgroups to dispatch in the X dimension.

• groupCountY :: Word32

  groupCountY is the number of local workgroups to dispatch in the Y dimension.

• groupCountZ :: Word32

  groupCountZ is the number of local workgroups to dispatch in the Z dimension.

Instances

Eq DrawMeshTasksIndirectCommandEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

(==) :: DrawMeshTasksIndirectCommandEXT -> DrawMeshTasksIndirectCommandEXT -> Bool

(/=) :: DrawMeshTasksIndirectCommandEXT -> DrawMeshTasksIndirectCommandEXT -> Bool

Show DrawMeshTasksIndirectCommandEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

showsPrec :: Int -> DrawMeshTasksIndirectCommandEXT -> ShowS

show :: DrawMeshTasksIndirectCommandEXT -> String

showList :: [DrawMeshTasksIndirectCommandEXT] -> ShowS

Storable DrawMeshTasksIndirectCommandEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

sizeOf :: DrawMeshTasksIndirectCommandEXT -> Int

alignment :: DrawMeshTasksIndirectCommandEXT -> Int

peekElemOff :: Ptr DrawMeshTasksIndirectCommandEXT -> Int -> IO DrawMeshTasksIndirectCommandEXT

pokeElemOff :: Ptr DrawMeshTasksIndirectCommandEXT -> Int -> DrawMeshTasksIndirectCommandEXT -> IO ()

peekByteOff :: Ptr b -> Int -> IO DrawMeshTasksIndirectCommandEXT

pokeByteOff :: Ptr b -> Int -> DrawMeshTasksIndirectCommandEXT -> IO ()

peek :: Ptr DrawMeshTasksIndirectCommandEXT -> IO DrawMeshTasksIndirectCommandEXT

poke :: Ptr DrawMeshTasksIndirectCommandEXT -> DrawMeshTasksIndirectCommandEXT -> IO ()

FromCStruct DrawMeshTasksIndirectCommandEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

peekCStruct :: Ptr DrawMeshTasksIndirectCommandEXT -> IO DrawMeshTasksIndirectCommandEXT

ToCStruct DrawMeshTasksIndirectCommandEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

withCStruct :: DrawMeshTasksIndirectCommandEXT -> (Ptr DrawMeshTasksIndirectCommandEXT -> IO b) -> IO b

pokeCStruct :: Ptr DrawMeshTasksIndirectCommandEXT -> DrawMeshTasksIndirectCommandEXT -> IO b -> IO b

withZeroCStruct :: (Ptr DrawMeshTasksIndirectCommandEXT -> IO b) -> IO b

pokeZeroCStruct :: Ptr DrawMeshTasksIndirectCommandEXT -> IO b -> IO b

cStructSize :: Int

cStructAlignment :: Int

Zero DrawMeshTasksIndirectCommandEXT

Defined in Vulkan.Extensions.VK_EXT_mesh_shader

Methods

zero :: DrawMeshTasksIndirectCommandEXT

type EXT_MESH_SHADER_SPEC_VERSION = 1

pattern EXT_MESH_SHADER_SPEC_VERSION :: forall a. Integral a => a

type EXT_MESH_SHADER_EXTENSION_NAME = "VK_EXT_mesh_shader"

pattern EXT_MESH_SHADER_EXTENSION_NAME :: forall a. (Eq a, IsString a) => a

newtype IndirectCommandsTokenTypeNV

VkIndirectCommandsTokenTypeNV - Enum specifying token commands

Description

'

Token type	Equivalent command
INDIRECT_COMMANDS_TOKEN_TYPE_SHADER_GROUP_NV	cmdBindPipelineShaderGroupNV
INDIRECT_COMMANDS_TOKEN_TYPE_STATE_FLAGS_NV	-
INDIRECT_COMMANDS_TOKEN_TYPE_INDEX_BUFFER_NV	cmdBindIndexBuffer
INDIRECT_COMMANDS_TOKEN_TYPE_VERTEX_BUFFER_NV	cmdBindVertexBuffers
INDIRECT_COMMANDS_TOKEN_TYPE_PUSH_CONSTANT_NV	cmdPushConstants
INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_INDEXED_NV	cmdDrawIndexedIndirect
INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_NV	cmdDrawIndirect
INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_TASKS_NV	cmdDrawMeshTasksIndirectNV
INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_MESH_TASKS_NV	cmdDrawMeshTasksIndirectEXT

Supported indirect command tokens

See Also

VK_NV_device_generated_commands, IndirectCommandsLayoutTokenNV

Constructors

IndirectCommandsTokenTypeNV Int32

Bundled Patterns

pattern INDIRECT_COMMANDS_TOKEN_TYPE_SHADER_GROUP_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_STATE_FLAGS_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_INDEX_BUFFER_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_VERTEX_BUFFER_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_PUSH_CONSTANT_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_INDEXED_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_TASKS_NV :: IndirectCommandsTokenTypeNV

pattern INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_MESH_TASKS_NV :: IndirectCommandsTokenTypeNV

Instances

Eq IndirectCommandsTokenTypeNV

Defined in Vulkan.Extensions.VK_NV_device_generated_commands

Methods

(==) :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> Bool

(/=) :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> Bool

Ord IndirectCommandsTokenTypeNV

Defined in Vulkan.Extensions.VK_NV_device_generated_commands

Methods

compare :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> Ordering

(<) :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> Bool

(<=) :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> Bool

(>) :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> Bool

(>=) :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> Bool

max :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV

min :: IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV

Read IndirectCommandsTokenTypeNV

Defined in Vulkan.Extensions.VK_NV_device_generated_commands

Methods

readsPrec :: Int -> ReadS IndirectCommandsTokenTypeNV

readList :: ReadS [IndirectCommandsTokenTypeNV]

readPrec :: ReadPrec IndirectCommandsTokenTypeNV

readListPrec :: ReadPrec [IndirectCommandsTokenTypeNV]

Show IndirectCommandsTokenTypeNV

Defined in Vulkan.Extensions.VK_NV_device_generated_commands

Methods

showsPrec :: Int -> IndirectCommandsTokenTypeNV -> ShowS

show :: IndirectCommandsTokenTypeNV -> String

showList :: [IndirectCommandsTokenTypeNV] -> ShowS

Storable IndirectCommandsTokenTypeNV

Defined in Vulkan.Extensions.VK_NV_device_generated_commands

Methods

sizeOf :: IndirectCommandsTokenTypeNV -> Int

alignment :: IndirectCommandsTokenTypeNV -> Int

peekElemOff :: Ptr IndirectCommandsTokenTypeNV -> Int -> IO IndirectCommandsTokenTypeNV

pokeElemOff :: Ptr IndirectCommandsTokenTypeNV -> Int -> IndirectCommandsTokenTypeNV -> IO ()

peekByteOff :: Ptr b -> Int -> IO IndirectCommandsTokenTypeNV

pokeByteOff :: Ptr b -> Int -> IndirectCommandsTokenTypeNV -> IO ()

peek :: Ptr IndirectCommandsTokenTypeNV -> IO IndirectCommandsTokenTypeNV

poke :: Ptr IndirectCommandsTokenTypeNV -> IndirectCommandsTokenTypeNV -> IO ()

Zero IndirectCommandsTokenTypeNV

Defined in Vulkan.Extensions.VK_NV_device_generated_commands

Methods

zero :: IndirectCommandsTokenTypeNV