Package org.lwjgl.vulkan

Class NVMeshShader

java.lang.Object

org.lwjgl.vulkan.NVMeshShader

public class NVMeshShader
extends java.lang.Object

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.

There are new programmable shader types — the task and mesh shader — to generate these collections to be processed by fixed-function primitive assembly and rasterization logic. When task and mesh shaders are dispatched, they replace the core pre-rasterization stages, including vertex array attribute fetching, vertex shader processing, tessellation, and geometry shader processing.

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

• SPV_NV_mesh_shader

VK_NV_mesh_shader

Name String

VK_NV_mesh_shader

Extension Type

Device extension

Registered Extension Number

203

Revision

1

Extension and Version Dependencies

• Requires Vulkan 1.0
• Requires VK_KHR_get_physical_device_properties2

Contact

• Christoph Kubisch pixeljetstream

Other Extension Metadata

Last Modified Date

2018-07-19

Interactions and External Dependencies

• This extension requires SPV_NV_mesh_shader
• This extension provides API support for GLSL_NV_mesh_shader

Contributors

• Pat Brown, NVIDIA
• Jeff Bolz, NVIDIA
• Daniel Koch, NVIDIA
• Piers Daniell, NVIDIA
• Pierre Boudier, NVIDIA

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	VK_NV_MESH_SHADER_EXTENSION_NAME	The extension name.
static int	VK_NV_MESH_SHADER_SPEC_VERSION	The extension specification version.
static int	VK_PIPELINE_STAGE_MESH_SHADER_BIT_NV VK_PIPELINE_STAGE_TASK_SHADER_BIT_NV	Extends VkPipelineStageFlagBits.
static int	VK_SHADER_STAGE_MESH_BIT_NV VK_SHADER_STAGE_TASK_BIT_NV	Extends VkShaderStageFlagBits.
static int	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_FEATURES_NV VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_PROPERTIES_NV	Extends VkStructureType.

Method Summary

Modifier and Type	Method	Description
static void	vkCmdDrawMeshTasksIndirectCountNV(org.lwjgl.vulkan.VkCommandBuffer commandBuffer, long buffer, long offset, long countBuffer, long countBufferOffset, int maxDrawCount, int stride)	Perform an indirect mesh tasks draw with the draw count sourced from a buffer.
static void	vkCmdDrawMeshTasksIndirectNV(org.lwjgl.vulkan.VkCommandBuffer commandBuffer, long buffer, long offset, int drawCount, int stride)	Issue an indirect mesh tasks draw into a command buffer.
static void	vkCmdDrawMeshTasksNV(org.lwjgl.vulkan.VkCommandBuffer commandBuffer, int taskCount, int firstTask)	Draw mesh task work items.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VK_NV_MESH_SHADER_SPEC_VERSION

The extension specification version.

VK_NV_MESH_SHADER_EXTENSION_NAME

The extension name.

VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_FEATURES_NV, VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_PROPERTIES_NV

Extends VkStructureType.

Enum values:

• STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_FEATURES_NV
• STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_PROPERTIES_NV

VK_SHADER_STAGE_TASK_BIT_NV, VK_SHADER_STAGE_MESH_BIT_NV

Extends VkShaderStageFlagBits.

Enum values:

• SHADER_STAGE_TASK_BIT_NV
• SHADER_STAGE_MESH_BIT_NV

VK_PIPELINE_STAGE_TASK_SHADER_BIT_NV, VK_PIPELINE_STAGE_MESH_SHADER_BIT_NV

Extends VkPipelineStageFlagBits.

Enum values:

• PIPELINE_STAGE_TASK_SHADER_BIT_NV
• PIPELINE_STAGE_MESH_SHADER_BIT_NV

Method Detail

vkCmdDrawMeshTasksNV

public static void vkCmdDrawMeshTasksNV(org.lwjgl.vulkan.VkCommandBuffer commandBuffer,
                                        int taskCount,
                                        int firstTask)

Draw mesh task work items.

C Specification

To record a draw that uses the mesh pipeline, call:

 void vkCmdDrawMeshTasksNV(
     VkCommandBuffer                             commandBuffer,
     uint32_t                                    taskCount,
     uint32_t                                    firstTask);

Description

When the command is executed, a global workgroup consisting of taskCount local workgroups is assembled.

Valid Usage

• If a VkSampler created with magFilter or minFilter equal to FILTER_LINEAR and compareEnable equal to FALSE is used to sample a VkImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a VkSampler created with mipmapMode equal to SAMPLER_MIPMAP_MODE_LINEAR and compareEnable equal to FALSE is used to sample a VkImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a VkImageView is sampled with depth comparison, the image view’s format features must contain FORMAT_FEATURE_2_SAMPLED_IMAGE_DEPTH_COMPARISON_BIT
• If a VkImageView 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 VkImageView 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 VkImageView being sampled with FILTER_CUBIC_EXT as a result of this command must have a VkImageViewType and format that supports cubic filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::filterCubic returned by vkGetPhysicalDeviceImageFormatProperties2
• Any VkImageView 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 VkImageViewType and format that supports cubic filtering together with minmax filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::filterCubicMinmax returned by vkGetPhysicalDeviceImageFormatProperties2
• Any VkImage created with a VkImageCreateInfo::flags containing IMAGE_CREATE_CORNER_SAMPLED_BIT_NV sampled as a result of this command must only be sampled using a VkSamplerAddressMode of SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE
• Any VkImageView or VkBufferView being written as a storage image or storage texel buffer where the image format field of the OpTypeImage is Unknown then the view’s format feature must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• Any VkImageView or VkBufferView being read as a storage image or storage texel buffer where the image format field of the OpTypeImage is Unknown then the view’s format feature must contain FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For each set n that is statically used by the VkPipeline 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 VkPipelineLayout that is compatible for set n, with the VkPipelineLayout used to create the current VkPipeline, as described in Pipeline Layout Compatibility
• If the maintenance4 feature is not enabled, then for each push constant that is statically used by the VkPipeline 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 VkPipelineLayout that is compatible for push constants, with the VkPipelineLayout used to create the current VkPipeline, as described in Pipeline Layout Compatibility
• Descriptors in each bound descriptor set, specified via vkCmdBindDescriptorSets, must be valid if they are statically used by the VkPipeline 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 VkPipeline 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 VkPipeline object bound to the pipeline bind point used by this command, since that pipeline was bound
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler object that uses unnormalized coordinates, that sampler must not be used to sample from any VkImage with a VkImageView 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 VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler 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 VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler 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 the robust buffer access feature is not enabled, and if the VkPipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If the robust buffer access feature is not enabled, and if the VkPipeline object bound to the pipeline bind point used by this command accesses a storage buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If commandBuffer is an unprotected command buffer and protectedNoFault is not supported, any resource accessed by the VkPipeline object bound to the pipeline bind point used by this command must not be a protected resource
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler or VkImageView object that enables sampler Y′C_BC_R conversion, that object must only be used with OpImageSample* or OpImageSparseSample* instructions
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler or VkImageView object that enables sampler Y′C_BC_R conversion, that object must not use the ConstOffset and Offset operands
• If a VkImageView 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 VkBufferView is accessed using OpImageWrite as a result of this command, then the Type of the Texel operand of that instruction must have at least as many components as the buffer view’s format
• If a VkImageView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64
• If a VkImageView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32
• If a VkBufferView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64
• If a VkBufferView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32
• If the sparseImageInt64Atomics feature is not enabled, VkImage 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, VkBuffer 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
• The current render pass must be compatible with the renderPass member of the VkGraphicsPipelineCreateInfo structure specified when creating the VkPipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• The subpass index of the current render pass must be equal to the subpass member of the VkGraphicsPipelineCreateInfo structure specified when creating the VkPipeline 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 draw is recorded in a render pass instance with multiview enabled, the maximum instance index must be less than or equal to VkPhysicalDeviceMultiviewProperties::maxMultiviewInstanceIndex
• If the bound graphics pipeline was created with VkPipelineSampleLocationsStateCreateInfoEXT::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_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 vkCmdSetViewportWithCount must match the VkPipelineViewportStateCreateInfo::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 vkCmdSetScissorWithCount must match the VkPipelineViewportStateCreateInfo::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 vkCmdSetViewportWithCount must match the scissorCount parameter of vkCmdSetScissorWithCount
• 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 VkPipelineViewportWScalingStateCreateInfoNV::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 VkPipelineViewportShadingRateImageStateCreateInfoNV::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 VkPipelineViewportSwizzleStateCreateInfoNV structure chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with VkPipelineViewportSwizzleStateCreateInfoNV::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 VkPipelineViewportExclusiveScissorStateCreateInfoNV structure chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with VkPipelineViewportExclusiveScissorStateCreateInfoNV::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 VkLogicOp 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 vkCmdSetViewportWithCount 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 neither the VK_AMD_mixed_attachment_samples nor the VK_NV_framebuffer_mixed_samples extensions are enabled, then VkPipelineMultisampleStateCreateInfo::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 VkPipelineRenderingCreateInfo::viewMask equal to VkRenderingInfo::viewMask
• If the current render pass instance was begun with CmdBeginRendering, the currently bound graphics pipeline must have been created with a VkPipelineRenderingCreateInfo::colorAttachmentCount equal to VkRenderingInfo::colorAttachmentCount
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::colorAttachmentCount greater than 0, then each element of the VkRenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a VkFormat equal to the corresponding element of VkPipelineRenderingCreateInfo::pColorAttachmentFormats used to create the currently bound graphics pipeline
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineRenderingCreateInfo::depthAttachmentFormat used to create the currently bound graphics pipeline must be equal to the VkFormat used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineRenderingCreateInfo::stencilAttachmentFormat used to create the currently bound graphics pipeline must be equal to the VkFormat used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingFragmentShadingRateAttachmentInfoKHR::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 VkRenderingFragmentDensityMapAttachmentInfoEXT::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and the current render pass instance was begun with CmdBeginRendering with a VkRenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the VkRenderingInfo::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV 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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline was created with a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the currently bound pipeline was created without a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and the current render pass instance was begun with CmdBeginRendering with a VkRenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the VkRenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the value of VkPipelineMultisampleStateCreateInfo::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline was created without a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline must have been created with a VkGraphicsPipelineCreateInfo::renderPass equal to NULL_HANDLE

• The bound graphics pipeline must not have been created with the VkPipelineShaderStageCreateInfo::stage member of an element of VkGraphicsPipelineCreateInfo::pStages set to SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_TESSELLATION_CONTROL_BIT, SHADER_STAGE_TESSELLATION_EVALUATION_BIT or SHADER_STAGE_GEOMETRY_BIT
• taskCount must be less than or equal to VkPhysicalDeviceMeshShaderPropertiesNV::maxDrawMeshTasksCount

Valid Usage (Implicit)

• commandBuffer must be a valid VkCommandBuffer handle
• commandBuffer must be in the recording state
• The VkCommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance

Host Synchronization

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

Command Properties

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

Parameters:

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

taskCount - the number of local workgroups to dispatch in the X dimension. Y and Z dimension are implicitly set to one.

firstTask - the X component of the first workgroup ID.

vkCmdDrawMeshTasksIndirectNV

public static void vkCmdDrawMeshTasksIndirectNV(org.lwjgl.vulkan.VkCommandBuffer commandBuffer,
                                                long buffer,
                                                long offset,
                                                int drawCount,
                                                int stride)

Issue an indirect mesh tasks draw into a command buffer.

C Specification

To record an indirect mesh tasks draw, call:

 void vkCmdDrawMeshTasksIndirectNV(
     VkCommandBuffer                             commandBuffer,
     VkBuffer                                    buffer,
     VkDeviceSize                                offset,
     uint32_t                                    drawCount,
     uint32_t                                    stride);

Description

vkCmdDrawMeshTasksIndirectNV behaves similarly to CmdDrawMeshTasksNV 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 VkDrawMeshTasksIndirectCommandNV structures. If drawCount is less than or equal to one, stride is ignored.

Valid Usage

• If a VkSampler created with magFilter or minFilter equal to FILTER_LINEAR and compareEnable equal to FALSE is used to sample a VkImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a VkSampler created with mipmapMode equal to SAMPLER_MIPMAP_MODE_LINEAR and compareEnable equal to FALSE is used to sample a VkImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a VkImageView is sampled with depth comparison, the image view’s format features must contain FORMAT_FEATURE_2_SAMPLED_IMAGE_DEPTH_COMPARISON_BIT
• If a VkImageView 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 VkImageView 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 VkImageView being sampled with FILTER_CUBIC_EXT as a result of this command must have a VkImageViewType and format that supports cubic filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::filterCubic returned by vkGetPhysicalDeviceImageFormatProperties2
• Any VkImageView 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 VkImageViewType and format that supports cubic filtering together with minmax filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::filterCubicMinmax returned by vkGetPhysicalDeviceImageFormatProperties2
• Any VkImage created with a VkImageCreateInfo::flags containing IMAGE_CREATE_CORNER_SAMPLED_BIT_NV sampled as a result of this command must only be sampled using a VkSamplerAddressMode of SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE
• Any VkImageView or VkBufferView being written as a storage image or storage texel buffer where the image format field of the OpTypeImage is Unknown then the view’s format feature must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• Any VkImageView or VkBufferView being read as a storage image or storage texel buffer where the image format field of the OpTypeImage is Unknown then the view’s format feature must contain FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For each set n that is statically used by the VkPipeline 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 VkPipelineLayout that is compatible for set n, with the VkPipelineLayout used to create the current VkPipeline, as described in Pipeline Layout Compatibility
• If the maintenance4 feature is not enabled, then for each push constant that is statically used by the VkPipeline 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 VkPipelineLayout that is compatible for push constants, with the VkPipelineLayout used to create the current VkPipeline, as described in Pipeline Layout Compatibility
• Descriptors in each bound descriptor set, specified via vkCmdBindDescriptorSets, must be valid if they are statically used by the VkPipeline 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 VkPipeline 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 VkPipeline object bound to the pipeline bind point used by this command, since that pipeline was bound
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler object that uses unnormalized coordinates, that sampler must not be used to sample from any VkImage with a VkImageView 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 VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler 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 VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler 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 the robust buffer access feature is not enabled, and if the VkPipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If the robust buffer access feature is not enabled, and if the VkPipeline object bound to the pipeline bind point used by this command accesses a storage buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If commandBuffer is an unprotected command buffer and protectedNoFault is not supported, any resource accessed by the VkPipeline object bound to the pipeline bind point used by this command must not be a protected resource
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler or VkImageView object that enables sampler Y′C_BC_R conversion, that object must only be used with OpImageSample* or OpImageSparseSample* instructions
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler or VkImageView object that enables sampler Y′C_BC_R conversion, that object must not use the ConstOffset and Offset operands
• If a VkImageView 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 VkBufferView is accessed using OpImageWrite as a result of this command, then the Type of the Texel operand of that instruction must have at least as many components as the buffer view’s format
• If a VkImageView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64
• If a VkImageView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32
• If a VkBufferView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64
• If a VkBufferView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32
• If the sparseImageInt64Atomics feature is not enabled, VkImage 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, VkBuffer 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
• The current render pass must be compatible with the renderPass member of the VkGraphicsPipelineCreateInfo structure specified when creating the VkPipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• The subpass index of the current render pass must be equal to the subpass member of the VkGraphicsPipelineCreateInfo structure specified when creating the VkPipeline 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 draw is recorded in a render pass instance with multiview enabled, the maximum instance index must be less than or equal to VkPhysicalDeviceMultiviewProperties::maxMultiviewInstanceIndex
• If the bound graphics pipeline was created with VkPipelineSampleLocationsStateCreateInfoEXT::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_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 vkCmdSetViewportWithCount must match the VkPipelineViewportStateCreateInfo::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 vkCmdSetScissorWithCount must match the VkPipelineViewportStateCreateInfo::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 vkCmdSetViewportWithCount must match the scissorCount parameter of vkCmdSetScissorWithCount
• 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 VkPipelineViewportWScalingStateCreateInfoNV::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 VkPipelineViewportShadingRateImageStateCreateInfoNV::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 VkPipelineViewportSwizzleStateCreateInfoNV structure chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with VkPipelineViewportSwizzleStateCreateInfoNV::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 VkPipelineViewportExclusiveScissorStateCreateInfoNV structure chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with VkPipelineViewportExclusiveScissorStateCreateInfoNV::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 VkLogicOp 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 vkCmdSetViewportWithCount 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 neither the VK_AMD_mixed_attachment_samples nor the VK_NV_framebuffer_mixed_samples extensions are enabled, then VkPipelineMultisampleStateCreateInfo::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 VkPipelineRenderingCreateInfo::viewMask equal to VkRenderingInfo::viewMask
• If the current render pass instance was begun with CmdBeginRendering, the currently bound graphics pipeline must have been created with a VkPipelineRenderingCreateInfo::colorAttachmentCount equal to VkRenderingInfo::colorAttachmentCount
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::colorAttachmentCount greater than 0, then each element of the VkRenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a VkFormat equal to the corresponding element of VkPipelineRenderingCreateInfo::pColorAttachmentFormats used to create the currently bound graphics pipeline
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineRenderingCreateInfo::depthAttachmentFormat used to create the currently bound graphics pipeline must be equal to the VkFormat used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineRenderingCreateInfo::stencilAttachmentFormat used to create the currently bound graphics pipeline must be equal to the VkFormat used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingFragmentShadingRateAttachmentInfoKHR::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 VkRenderingFragmentDensityMapAttachmentInfoEXT::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and the current render pass instance was begun with CmdBeginRendering with a VkRenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the VkRenderingInfo::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV 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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline was created with a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the currently bound pipeline was created without a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and the current render pass instance was begun with CmdBeginRendering with a VkRenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the VkRenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the value of VkPipelineMultisampleStateCreateInfo::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline was created without a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline must have been created with a VkGraphicsPipelineCreateInfo::renderPass equal to NULL_HANDLE

• The bound graphics pipeline must not have been created with the VkPipelineShaderStageCreateInfo::stage member of an element of VkGraphicsPipelineCreateInfo::pStages set to SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_TESSELLATION_CONTROL_BIT, SHADER_STAGE_TESSELLATION_EVALUATION_BIT or SHADER_STAGE_GEOMETRY_BIT

• If buffer is non-sparse then it must be bound completely and contiguously to a single VkDeviceMemory 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 multi-draw indirect feature is not enabled, drawCount must be 0 or 1
• drawCount must be less than or equal to VkPhysicalDeviceLimits::maxDrawIndirectCount
• If drawCount is greater than 1, stride must be a multiple of 4 and must be greater than or equal to sizeof(VkDrawMeshTasksIndirectCommandNV)
• If drawCount is equal to 1, (offset + sizeof(VkDrawMeshTasksIndirectCommandNV)) must be less than or equal to the size of buffer
• If drawCount is greater than 1, (stride × (drawCount - 1) + offset + sizeof(VkDrawMeshTasksIndirectCommandNV)) must be less than or equal to the size of buffer

Valid Usage (Implicit)

• commandBuffer must be a valid VkCommandBuffer handle
• buffer must be a valid VkBuffer handle
• commandBuffer must be in the recording state
• The VkCommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• Both of buffer, and commandBuffer must have been created, allocated, or retrieved from the same VkDevice

Host Synchronization

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

Command Properties

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

Parameters:

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

buffer - the buffer containing draw parameters.

offset - the byte offset into buffer where parameters begin.

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

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

vkCmdDrawMeshTasksIndirectCountNV

public static void vkCmdDrawMeshTasksIndirectCountNV(org.lwjgl.vulkan.VkCommandBuffer commandBuffer,
                                                     long buffer,
                                                     long offset,
                                                     long countBuffer,
                                                     long countBufferOffset,
                                                     int maxDrawCount,
                                                     int stride)

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

C Specification

To record an indirect mesh tasks draw with the draw count sourced from a buffer, call:

 void vkCmdDrawMeshTasksIndirectCountNV(
     VkCommandBuffer                             commandBuffer,
     VkBuffer                                    buffer,
     VkDeviceSize                                offset,
     VkBuffer                                    countBuffer,
     VkDeviceSize                                countBufferOffset,
     uint32_t                                    maxDrawCount,
     uint32_t                                    stride);

Description

vkCmdDrawMeshTasksIndirectCountNV behaves similarly to CmdDrawMeshTasksIndirectNV 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 VkSampler created with magFilter or minFilter equal to FILTER_LINEAR and compareEnable equal to FALSE is used to sample a VkImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a VkSampler created with mipmapMode equal to SAMPLER_MIPMAP_MODE_LINEAR and compareEnable equal to FALSE is used to sample a VkImageView as a result of this command, then the image view’s format features must contain FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• If a VkImageView is sampled with depth comparison, the image view’s format features must contain FORMAT_FEATURE_2_SAMPLED_IMAGE_DEPTH_COMPARISON_BIT
• If a VkImageView 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 VkImageView 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 VkImageView being sampled with FILTER_CUBIC_EXT as a result of this command must have a VkImageViewType and format that supports cubic filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::filterCubic returned by vkGetPhysicalDeviceImageFormatProperties2
• Any VkImageView 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 VkImageViewType and format that supports cubic filtering together with minmax filtering, as specified by VkFilterCubicImageViewImageFormatPropertiesEXT::filterCubicMinmax returned by vkGetPhysicalDeviceImageFormatProperties2
• Any VkImage created with a VkImageCreateInfo::flags containing IMAGE_CREATE_CORNER_SAMPLED_BIT_NV sampled as a result of this command must only be sampled using a VkSamplerAddressMode of SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE
• Any VkImageView or VkBufferView being written as a storage image or storage texel buffer where the image format field of the OpTypeImage is Unknown then the view’s format feature must contain FORMAT_FEATURE_2_STORAGE_WRITE_WITHOUT_FORMAT_BIT
• Any VkImageView or VkBufferView being read as a storage image or storage texel buffer where the image format field of the OpTypeImage is Unknown then the view’s format feature must contain FORMAT_FEATURE_2_STORAGE_READ_WITHOUT_FORMAT_BIT
• For each set n that is statically used by the VkPipeline 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 VkPipelineLayout that is compatible for set n, with the VkPipelineLayout used to create the current VkPipeline, as described in Pipeline Layout Compatibility
• If the maintenance4 feature is not enabled, then for each push constant that is statically used by the VkPipeline 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 VkPipelineLayout that is compatible for push constants, with the VkPipelineLayout used to create the current VkPipeline, as described in Pipeline Layout Compatibility
• Descriptors in each bound descriptor set, specified via vkCmdBindDescriptorSets, must be valid if they are statically used by the VkPipeline 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 VkPipeline 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 VkPipeline object bound to the pipeline bind point used by this command, since that pipeline was bound
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler object that uses unnormalized coordinates, that sampler must not be used to sample from any VkImage with a VkImageView 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 VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler 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 VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler 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 the robust buffer access feature is not enabled, and if the VkPipeline object bound to the pipeline bind point used by this command accesses a uniform buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If the robust buffer access feature is not enabled, and if the VkPipeline object bound to the pipeline bind point used by this command accesses a storage buffer, it must not access values outside of the range of the buffer as specified in the descriptor set bound to the same pipeline bind point
• If commandBuffer is an unprotected command buffer and protectedNoFault is not supported, any resource accessed by the VkPipeline object bound to the pipeline bind point used by this command must not be a protected resource
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler or VkImageView object that enables sampler Y′C_BC_R conversion, that object must only be used with OpImageSample* or OpImageSparseSample* instructions
• If the VkPipeline object bound to the pipeline bind point used by this command accesses a VkSampler or VkImageView object that enables sampler Y′C_BC_R conversion, that object must not use the ConstOffset and Offset operands
• If a VkImageView 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 VkBufferView is accessed using OpImageWrite as a result of this command, then the Type of the Texel operand of that instruction must have at least as many components as the buffer view’s format
• If a VkImageView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64
• If a VkImageView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32
• If a VkBufferView with a VkFormat that has a 64-bit component width is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 64
• If a VkBufferView with a VkFormat that has a component width less than 64-bit is accessed as a result of this command, the SampledType of the OpTypeImage operand of that instruction must have a Width of 32
• If the sparseImageInt64Atomics feature is not enabled, VkImage 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, VkBuffer 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
• The current render pass must be compatible with the renderPass member of the VkGraphicsPipelineCreateInfo structure specified when creating the VkPipeline bound to PIPELINE_BIND_POINT_GRAPHICS
• The subpass index of the current render pass must be equal to the subpass member of the VkGraphicsPipelineCreateInfo structure specified when creating the VkPipeline 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 draw is recorded in a render pass instance with multiview enabled, the maximum instance index must be less than or equal to VkPhysicalDeviceMultiviewProperties::maxMultiviewInstanceIndex
• If the bound graphics pipeline was created with VkPipelineSampleLocationsStateCreateInfoEXT::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_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 vkCmdSetViewportWithCount must match the VkPipelineViewportStateCreateInfo::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 vkCmdSetScissorWithCount must match the VkPipelineViewportStateCreateInfo::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 vkCmdSetViewportWithCount must match the scissorCount parameter of vkCmdSetScissorWithCount
• 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 VkPipelineViewportWScalingStateCreateInfoNV::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 VkPipelineViewportShadingRateImageStateCreateInfoNV::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 VkPipelineViewportSwizzleStateCreateInfoNV structure chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with VkPipelineViewportSwizzleStateCreateInfoNV::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 VkPipelineViewportExclusiveScissorStateCreateInfoNV structure chained from VkPipelineVieportCreateInfo, then the bound graphics pipeline must have been created with VkPipelineViewportExclusiveScissorStateCreateInfoNV::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 VkLogicOp 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 vkCmdSetViewportWithCount 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 neither the VK_AMD_mixed_attachment_samples nor the VK_NV_framebuffer_mixed_samples extensions are enabled, then VkPipelineMultisampleStateCreateInfo::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 VkPipelineRenderingCreateInfo::viewMask equal to VkRenderingInfo::viewMask
• If the current render pass instance was begun with CmdBeginRendering, the currently bound graphics pipeline must have been created with a VkPipelineRenderingCreateInfo::colorAttachmentCount equal to VkRenderingInfo::colorAttachmentCount
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::colorAttachmentCount greater than 0, then each element of the VkRenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a VkFormat equal to the corresponding element of VkPipelineRenderingCreateInfo::pColorAttachmentFormats used to create the currently bound graphics pipeline
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineRenderingCreateInfo::depthAttachmentFormat used to create the currently bound graphics pipeline must be equal to the VkFormat used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineRenderingCreateInfo::stencilAttachmentFormat used to create the currently bound graphics pipeline must be equal to the VkFormat used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering and VkRenderingFragmentShadingRateAttachmentInfoKHR::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 VkRenderingFragmentDensityMapAttachmentInfoEXT::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and the current render pass instance was begun with CmdBeginRendering with a VkRenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the VkRenderingInfo::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV 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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline was created with a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of the depthStencilAttachmentSamples member of VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the currently bound pipeline was created without a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and the current render pass instance was begun with CmdBeginRendering with a VkRenderingInfo::colorAttachmentCount parameter greater than 0, then each element of the VkRenderingInfo::pColorAttachments array with a imageView not equal to NULL_HANDLE must have been created with a sample count equal to the value of VkPipelineMultisampleStateCreateInfo::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 VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pDepthAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pDepthAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline was created without a VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure, and VkRenderingInfo::pStencilAttachment\u2192pname:imageView was not NULL_HANDLE, the value of VkPipelineMultisampleStateCreateInfo::rasterizationSamples used to create the currently bound graphics pipeline must be equal to the sample count used to create VkRenderingInfo::pStencilAttachment\u2192pname:imageView
• If the current render pass instance was begun with CmdBeginRendering, the currently bound pipeline must have been created with a VkGraphicsPipelineCreateInfo::renderPass equal to NULL_HANDLE

• The bound graphics pipeline must not have been created with the VkPipelineShaderStageCreateInfo::stage member of an element of VkGraphicsPipelineCreateInfo::pStages set to SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_TESSELLATION_CONTROL_BIT, SHADER_STAGE_TESSELLATION_EVALUATION_BIT or SHADER_STAGE_GEOMETRY_BIT

• If buffer is non-sparse then it must be bound completely and contiguously to a single VkDeviceMemory 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 VkDeviceMemory 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 VkPhysicalDeviceLimits::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(VkDrawMeshTasksIndirectCommandNV)
• If maxDrawCount is greater than or equal to 1, (stride × (maxDrawCount - 1) + offset + sizeof(VkDrawMeshTasksIndirectCommandNV)) must be less than or equal to the size of buffer
• If the count stored in countBuffer is equal to 1, (offset + sizeof(VkDrawMeshTasksIndirectCommandNV)) 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(VkDrawMeshTasksIndirectCommandNV)) must be less than or equal to the size of buffer

Valid Usage (Implicit)

• commandBuffer must be a valid VkCommandBuffer handle
• buffer must be a valid VkBuffer handle
• countBuffer must be a valid VkBuffer handle
• commandBuffer must be in the recording state
• The VkCommandPool that commandBuffer was allocated from must support graphics operations
• This command must only be called inside of a render pass instance
• Each of buffer, commandBuffer, and countBuffer must have been created, allocated, or retrieved from the same VkDevice

Host Synchronization

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

Command Properties

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

Parameters:

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

buffer - the buffer containing draw parameters.

offset - the byte offset into buffer where parameters begin.

countBuffer - the buffer containing the draw count.

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

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 - the byte stride between successive sets of draw parameters.