VulkanHub
Function Prototype

vkCmdSetRayTracingPipelineStackSizeKHR

Set the stack size dynamically for a ray tracing pipeline
primary / secondary
outside
compute
state

To dynamically set the stack size for a ray tracing pipeline, call:

void vkCmdSetRayTracingPipelineStackSizeKHR(
    VkCommandBuffer commandBuffer,
    uint32_t pipelineStackSize);
  • commandBuffer is the command buffer into which the command will be recorded.
  • pipelineStackSize is the stack size to use for subsequent ray tracing trace commands.

This command sets the stack size for subsequent ray tracing commands when the ray tracing pipeline is created with VK_DYNAMIC_STATE_RAY_TRACING_PIPELINE_STACK_SIZE_KHR set in VkPipelineDynamicStateCreateInfo::pDynamicStates. Otherwise, the stack size is computed as described in Ray Tracing Pipeline Stack.

Valid Usage

VUID-vkCmdSetRayTracingPipelineStackSizeKHR-pipelineStackSize-03610

pipelineStackSize must be large enough for any dynamic execution through the shaders in the ray tracing pipeline used by a subsequent trace call

Valid Usage (Implicit)

VUID-vkCmdSetRayTracingPipelineStackSizeKHR-commandBuffer-parameter

commandBuffer must be a valid VkCommandBuffer handle

VUID-vkCmdSetRayTracingPipelineStackSizeKHR-commandBuffer-recording

commandBuffer must be in the recording state

VUID-vkCmdSetRayTracingPipelineStackSizeKHR-commandBuffer-cmdpool

The VkCommandPool that commandBuffer was allocated from must support compute operations

VUID-vkCmdSetRayTracingPipelineStackSizeKHR-renderpass

This command must only be called outside of a render pass instance

VUID-vkCmdSetRayTracingPipelineStackSizeKHR-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 ::