C Specification

Values which can be set in VkGpaSampleBeginInfoAMD::sampleType are:

// Provided by VK_AMD_gpa_interface
typedef enum VkGpaSampleTypeAMD {
    VK_GPA_SAMPLE_TYPE_CUMULATIVE_AMD = 0,
    VK_GPA_SAMPLE_TYPE_TRACE_AMD = 1,
    VK_GPA_SAMPLE_TYPE_TIMING_AMD = 2,
} VkGpaSampleTypeAMD;

Description

  • VK_GPA_SAMPLE_TYPE_CUMULATIVE_AMD specifies that one 64-bit result will be returned per global performance counter, representing the cumulative delta for that counter over the sample period. Cumulative samples must begin and end in the same command buffer.

  • VK_GPA_SAMPLE_TYPE_TRACE_AMD specifies that a buffer will be filled with SQTT results data in RGP file format, and/or streaming performance monitor data. Trace samples may span multiple command buffers.

  • VK_GPA_SAMPLE_TYPE_TIMING_AMD specifies that two 64-bit results will be recorded to gather timestamp data.

See Also

VK_AMD_gpa_interface, VkGpaSampleBeginInfoAMD

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

Copyright 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0