LWJGL 3.3.3 · org.lwjgl.vulkan.KHRDrawIndirectCount

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.

VK_KHR_draw_indirect_count

Name String

VK_KHR_draw_indirect_count

Extension Type

Device extension

Registered Extension Number

170

Revision

Deprecation state

Promoted to Vulkan 1.2

Contact

Piers Daniell pdaniell-nv

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

Field Summary

Modifier and Type	Field and Description
public static final String	VK_KHR_DRAW_INDIRECT_COUNT_EXTENSION_NAME The extension name.
public static final int	VK_KHR_DRAW_INDIRECT_COUNT_SPEC_VERSION The extension specification version.

Access	Constructor and Description
protected	KHRDrawIndirectCount()

Method Summary

Modifier and Type Method and Description

Modifier and Type	Method and Description
public static void	vkCmdDrawIndexedIndirectCountKHR(VkCommandBuffer the command buffer into which the command is recorded. commandBuffer, long the buffer containing draw parameters. buffer, long the byte offset into `buffer` where parameters begin. offset, long the buffer containing the draw count. countBuffer, long the byte offset into `countBuffer` where the draw count begins. countBufferOffset, int 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`. maxDrawCount, int the byte stride between successive sets of draw parameters. stride) See `CmdDrawIndexedIndirectCount`.
public static void	vkCmdDrawIndirectCountKHR(VkCommandBuffer the command buffer into which the command is recorded. commandBuffer, long the buffer containing draw parameters. buffer, long the byte offset into `buffer` where parameters begin. offset, long the buffer containing the draw count. countBuffer, long the byte offset into `countBuffer` where the draw count begins. countBufferOffset, int 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`. maxDrawCount, int the byte stride between successive sets of draw parameters. stride) See `CmdDrawIndirectCount`.

public static void

vkCmdDrawIndexedIndirectCountKHR(VkCommandBuffer

the command buffer into which the command is recorded.

commandBuffer, long

the buffer containing draw parameters.

buffer, long

the byte offset into buffer where parameters begin.

offset, long

the buffer containing the draw count.

countBuffer, long

the byte offset into countBuffer where the draw count begins.

countBufferOffset, int

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.

maxDrawCount, int

the byte stride between successive sets of draw parameters.

stride)

See CmdDrawIndexedIndirectCount.

public static void

vkCmdDrawIndirectCountKHR(VkCommandBuffer

the command buffer into which the command is recorded.

commandBuffer, long

the buffer containing draw parameters.

buffer, long

the byte offset into buffer where parameters begin.

offset, long

the buffer containing the draw count.

countBuffer, long

the byte offset into countBuffer where the draw count begins.

countBufferOffset, int

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.

maxDrawCount, int

the byte stride between successive sets of draw parameters.

stride)

See CmdDrawIndirectCount.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

VK_KHR_DRAW_INDIRECT_COUNT_EXTENSION_NAME	back to summary
public static final String VK_KHR_DRAW_INDIRECT_COUNT_EXTENSION_NAME The extension name.

VK_KHR_DRAW_INDIRECT_COUNT_SPEC_VERSION	back to summary
public static final int VK_KHR_DRAW_INDIRECT_COUNT_SPEC_VERSION The extension specification version.

Constructor Detail

KHRDrawIndirectCount	back to summary
protected KHRDrawIndirectCount()

Method Detail

vkCmdDrawIndexedIndirectCountKHR back to summary

vkCmdDrawIndexedIndirectCountKHR	back to summary
public static void vkCmdDrawIndexedIndirectCountKHR(VkCommandBuffer commandBuffer, long buffer, long offset, long countBuffer, long countBufferOffset, int maxDrawCount, int stride) See `CmdDrawIndexedIndirectCount`. Parameters commandBuffer:VkCommandBuffer the command buffer into which the command is recorded. buffer:long the buffer containing draw parameters. offset:long the byte offset into `buffer` where parameters begin. countBuffer:long the buffer containing the draw count. countBufferOffset:long the byte offset into `countBuffer` where the draw count begins. maxDrawCount:int 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:int the byte stride between successive sets of draw parameters.

public static void vkCmdDrawIndexedIndirectCountKHR(VkCommandBuffer commandBuffer, long buffer, long offset, long countBuffer, long countBufferOffset, int maxDrawCount, int stride)

See CmdDrawIndexedIndirectCount.

Parameters

commandBuffer:VkCommandBuffer: the command buffer into which the command is recorded.
buffer:long: the buffer containing draw parameters.
offset:long: the byte offset into buffer where parameters begin.
countBuffer:long: the buffer containing the draw count.
countBufferOffset:long: the byte offset into countBuffer where the draw count begins.
maxDrawCount:int: 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:int: the byte stride between successive sets of draw parameters.

vkCmdDrawIndirectCountKHR back to summary

vkCmdDrawIndirectCountKHR	back to summary
public static void vkCmdDrawIndirectCountKHR(VkCommandBuffer commandBuffer, long buffer, long offset, long countBuffer, long countBufferOffset, int maxDrawCount, int stride) See `CmdDrawIndirectCount`. Parameters commandBuffer:VkCommandBuffer the command buffer into which the command is recorded. buffer:long the buffer containing draw parameters. offset:long the byte offset into `buffer` where parameters begin. countBuffer:long the buffer containing the draw count. countBufferOffset:long the byte offset into `countBuffer` where the draw count begins. maxDrawCount:int 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:int the byte stride between successive sets of draw parameters.

public static void vkCmdDrawIndirectCountKHR(VkCommandBuffer commandBuffer, long buffer, long offset, long countBuffer, long countBufferOffset, int maxDrawCount, int stride)