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C Specification

The VkRayTracingPipelineInterfaceCreateInfoKHR structure is defined as:

// Provided by VK_KHR_ray_tracing
typedef struct VkRayTracingPipelineInterfaceCreateInfoKHR {
    VkStructureType    sType;
    const void*        pNext;
    uint32_t           maxPayloadSize;
    uint32_t           maxAttributeSize;
    uint32_t           maxCallableSize;
} VkRayTracingPipelineInterfaceCreateInfoKHR;

Members

  • sType is the type of this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • maxPayloadSize is the maximum payload size in bytes used by any shader in the pipeline.

  • maxAttributeSize is the maximum attribute structure size in bytes used by any shader in the pipeline.

  • maxCallableSize is the maximum callable data size in bytes used by any shader in the pipeline.

Description

maxPayloadSize is calculated as the maximum number of bytes used by any block declared in the RayPayloadKHR or IncomingRayPayloadKHR storage classes. maxAttributeSize is calculated as the maximum number of bytes used by any block declared in the HitAttributeKHR storage class. maxCallableSize is calculated as the maximum number of bytes used by any block declred in the CallableDataKHR or IncomingCallableDataKHR. As variables in these storage classes do not have explicit offsets, the size should be calculated as if each variable has a scalar alignment equal to the largest scalar alignment of any of the block’s members.

Valid Usage (Implicit)
  • sType must be VK_STRUCTURE_TYPE_RAY_TRACING_PIPELINE_INTERFACE_CREATE_INFO_KHR

  • pNext must be NULL

See Also

Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.