Promoted to core in Vulkan 1.2
This extension allows an application to source the number of draw calls for indirect draw calls from a VkBuffer. This enables applications to generate arbitrary amounts of draw commands and execute them without host intervention.
The vkCmdDrawIndirectCount and vkCmdDrawIndexedIndirectCount function can be used if the extension is supported or checking the VkPhysicalDeviceVulkan12Features::drawIndirectCount feature bit.
The following diagram is to visualize the difference between vkCmdDraw, vkCmdDrawIndirect, and vkCmdDrawIndirectCount.
