Contact
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Christoph Kubisch pixeljetstream
Other Extension Metadata
- Last Modified Date
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2022-01-20
- Interactions and External Dependencies
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This extension requires
SPV_EXT_mesh_shader
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This extension provides API support for
GLSL_EXT_mesh_shader
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Interacts with Vulkan 1.1
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Interacts with
VK_KHR_multiview
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Interacts with
VK_KHR_fragment_shading_rate
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- Contributors
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Christoph Kubisch, NVIDIA
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Pat Brown, NVIDIA
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Jeff Bolz, NVIDIA
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Daniel Koch, NVIDIA
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Piers Daniell, NVIDIA
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Pierre Boudier, NVIDIA
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Patrick Mours, NVIDIA
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David Zhao Akeley, NVIDIA
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Kedarnath Thangudu, NVIDIA
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Timur Kristóf, Valve
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Hans-Kristian Arntzen, Valve
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Philip Rebohle, Valve
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Mike Blumenkrantz, Valve
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Slawomir Grajewski, Intel
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Michal Pietrasiuk, Intel
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Mariusz Merecki, Intel
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Tom Olson, ARM
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Jan-Harald Fredriksen, ARM
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Sandeep Kakarlapudi, ARM
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Ruihao Zhang, QUALCOMM
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Ricardo Garcia, Igalia, S.L.
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Tobias Hector, AMD
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Stu Smith, AMD
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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:
New Enum Constants
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VK_EXT_MESH_SHADER_EXTENSION_NAME
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VK_EXT_MESH_SHADER_SPEC_VERSION
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Extending VkPipelineStageFlagBits:
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VK_PIPELINE_STAGE_MESH_SHADER_BIT_EXT
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VK_PIPELINE_STAGE_TASK_SHADER_BIT_EXT
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Extending VkQueryPipelineStatisticFlagBits:
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VK_QUERY_PIPELINE_STATISTIC_MESH_SHADER_INVOCATIONS_BIT_EXT
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VK_QUERY_PIPELINE_STATISTIC_TASK_SHADER_INVOCATIONS_BIT_EXT
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Extending VkQueryType:
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VK_QUERY_TYPE_MESH_PRIMITIVES_GENERATED_EXT
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Extending VkShaderStageFlagBits:
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VK_SHADER_STAGE_MESH_BIT_EXT
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VK_SHADER_STAGE_TASK_BIT_EXT
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Extending VkStructureType:
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VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_FEATURES_EXT
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VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MESH_SHADER_PROPERTIES_EXT
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If VK_NV_device_generated_commands is supported:
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Extending VkIndirectCommandsTokenTypeNV:
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VK_INDIRECT_COMMANDS_TOKEN_TYPE_DRAW_MESH_TASKS_NV
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New or Modified Built-In Variables
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(modified)
Position
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(modified)
PointSize
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(modified)
ClipDistance
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(modified)
CullDistance
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(modified)
PrimitiveId
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(modified)
Layer
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(modified)
ViewportIndex
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(modified)
NumWorkgroups
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(modified)
WorkgroupSize
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(modified)
WorkgroupId
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(modified)
LocalInvocationId
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(modified)
GlobalInvocationId
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(modified)
LocalInvocationIndex
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(modified)
NumSubgroups
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(modified)
SubgroupId
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(modified)
DrawIndex
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(modified)
PrimitiveShadingRateKHR
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(modified)
ViewIndex
Version History
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Revision 1, 2022-03-08 (Christoph Kubisch, Daniel Koch, Patrick Mours)
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Initial revision
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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.