VulkanHub
Function Prototype

vkCmdSetPrimitiveTopology

Set primitive topology state dynamically for a command buffer

To dynamically set primitive topology, call:

void vkCmdSetPrimitiveTopologyEXT(
    VkCommandBuffer commandBuffer,
    VkPrimitiveTopology primitiveTopology);
  • commandBuffer is the command buffer into which the command will be recorded.
  • primitiveTopology specifies the primitive topology to use for drawing.

This command sets the primitive topology for subsequent drawing commands when drawing using shader objects, or when the graphics pipeline is created with VK_DYNAMIC_STATE_PRIMITIVE_TOPOLOGY set in VkPipelineDynamicStateCreateInfo::pDynamicStates. Otherwise, this state is specified by the VkPipelineInputAssemblyStateCreateInfo::topology value used to create the currently active pipeline.

Valid Usage

VUID-vkCmdSetPrimitiveTopology-None-08971

At least one of the following must be true:

Valid Usage (Implicit)

VUID-vkCmdSetPrimitiveTopology-commandBuffer-parameter

commandBuffer must be a valid VkCommandBuffer handle

VUID-vkCmdSetPrimitiveTopology-primitiveTopology-parameter

primitiveTopology must be a valid VkPrimitiveTopology value

VUID-vkCmdSetPrimitiveTopology-commandBuffer-recording

commandBuffer must be in the recording state

VUID-vkCmdSetPrimitiveTopology-commandBuffer-cmdpool

The VkCommandPool that commandBuffer was allocated from must support graphics operations

VUID-vkCmdSetPrimitiveTopology-videocoding

This command must only be called outside of a video coding scope

::

Host Synchronization

  • Host access to commandBuffer must be externally synchronized
  • Host access to the VkCommandPool that commandBuffer was allocated from must be externally synchronized ::