Vulkan.Extensions.VK_KHR_draw_indirect_count

Name

VK_KHR_draw_indirect_count - device extension

VK_KHR_draw_indirect_count

Name String

VK_KHR_draw_indirect_count

Extension Type

Device extension

Registered Extension Number

170

Revision

1

Extension and Version Dependencies

• Requires Vulkan 1.0

Deprecation state

• Promoted to Vulkan 1.2

Contact

• Piers Daniell @pdaniell-nv%0A<<Here describe the issue or question you have about the VK_KHR_draw_indirect_count extension> >

Other Extension Metadata

Last Modified Date

2017-08-25

Interactions and External Dependencies

• Promoted to Vulkan 1.2 Core

IP Status

No known IP claims.

Contributors

• Matthaeus G. Chajdas, AMD
• Derrick Owens, AMD
• Graham Sellers, AMD
• Daniel Rakos, AMD
• Dominik Witczak, AMD
• Piers Daniell, NVIDIA

Description

This extension is based off the VK_AMD_draw_indirect_count extension. This extension allows an application to source the number of draws for indirect drawing calls from a buffer.

Applications might want to do culling on the GPU via a compute shader prior to drawing. This enables the application to generate an arbitrary number of drawing commands and execute them without host intervention.

Promotion to Vulkan 1.2

All functionality in this extension is included in core Vulkan 1.2, with the KHR suffix omitted. However, if Vulkan 1.2 is supported and this extension is not, the entry points cmdDrawIndirectCount and cmdDrawIndexedIndirectCount are optional. The original type, enum and command names are still available as aliases of the core functionality.

New Commands

• cmdDrawIndexedIndirectCountKHR

• cmdDrawIndirectCountKHR

New Enum Constants

• KHR_DRAW_INDIRECT_COUNT_EXTENSION_NAME

• KHR_DRAW_INDIRECT_COUNT_SPEC_VERSION

Version History

• Revision 1, 2017-08-25 (Piers Daniell)

  • Initial draft based off VK_AMD_draw_indirect_count

See Also

cmdDrawIndexedIndirectCountKHR, cmdDrawIndirectCountKHR

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

cmdDrawIndirectCountKHR :: MonadIO io => CommandBuffer -> Buffer -> ("offset" ::: DeviceSize) -> ("countBuffer" ::: Buffer) -> ("countBufferOffset" ::: DeviceSize) -> ("maxDrawCount" ::: Word32) -> ("stride" ::: Word32) -> io ()

cmdDrawIndexedIndirectCountKHR :: MonadIO io => CommandBuffer -> Buffer -> ("offset" ::: DeviceSize) -> ("countBuffer" ::: Buffer) -> ("countBufferOffset" ::: DeviceSize) -> ("maxDrawCount" ::: Word32) -> ("stride" ::: Word32) -> io ()

type KHR_DRAW_INDIRECT_COUNT_SPEC_VERSION = 1

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

type KHR_DRAW_INDIRECT_COUNT_EXTENSION_NAME = "VK_KHR_draw_indirect_count"

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