VK_KHR_draw_indirect_count

Other Extension Metadata

Last Modified Date

2017-08-25

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 on 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 commands vkCmdDrawIndirectCount and vkCmdDrawIndexedIndirectCount are optional. The original type, enum, and command names are still available as aliases of the core functionality.

New Commands

• vkCmdDrawIndexedIndirectCountKHR
• vkCmdDrawIndirectCountKHR

New Enum Constants

• VK_KHR_DRAW_INDIRECT_COUNT_EXTENSION_NAME
• VK_KHR_DRAW_INDIRECT_COUNT_SPEC_VERSION

Version History

• Revision 1, 2017-08-25 (Piers Daniell)
  • Initial draft based on VK_AMD_draw_indirect_count