This release is a stability release that adds the following fixes:

• OpenCL support has been re-enabled for AMD Radeon RX 7000 series hardware.
• OpenGL: GPA is no longer supporting Adrenalin 19.6.3 and older drivers.
• On all hardware and APIs, the following counters were renamed for clarity:
  • CSWavefronts was renamed to CSWavefrontsLaunched
  • CSThreads was renamed to CSThreadsLaunched
  • CSThreadGroups was renamed to CSThreadGroupsLaunched
• On all hardware and APIs the following counters were removed, there are already matching counters in the GlobalMemory group:
  • CSMemUnitBusy , CSMemUnitBusyCycles , CSMemUnitStalled , CSMemUnitStalledCycles , CSWriteUnitStalled , CSWriteUnitStalledCycles
• CSALUStalledByLDS and CSALUStalledByLDSCycles are now based on per-wave cycle counts.
• On AMD Radeon RX 5000 Series and newer hardware, counters in the ComputeShader group now have simplified equations.

• Added support for additional AMD RDNA™ 3 based APUs.
• GPA’s OpenCL™ support has been temporarily disabled on AMD RDNA 3 hardware.
• Updated error checking in counter splitting to report error if counter group max is zero.
• Disabled the following counters on AMD RDNA 3 based hardware due to inconsistent results:
  • CBMemRead , CBColorAndMaskRead , CBMemWritten , CBColorAndMaskWritten
• Disabled the following counters on AMD RDNA™ 2 based hardware due to inconsistent results:
  • VsGsVerticesIn , VsGsPrimsIn
• Disabled the following counters on AMD RDNA™ based hardware due to inconsistent results:
  • VsGsSALUBusy , VsGsSALUBusyCycles , VsGsVALUBusy , VsGsVALUBusyCycles , VsGsVALUInstCount , VsGsSALUInstCount , PSVALUBusy , PSVALUBusyCycles , PSVALUInstCount , PSSALUBusy , PSSALUBusyCycles , PSSALUInstCount
• Output from pre_build.py script is now generated into build\ |win,linux| \ directory.
• Compiled binaries are now generated into build\output\ directory.

• Updated equation for MemUnitBusyCycles .
• Updated description of LocalVidMemBytes .
• Reduced size of static buffer when logging messages to avoid compiler warning.
• Fixed an issue on some variant hardware that would prevent enabling certain hardware counters.

• Added support for AMD Radeon RX 7700 XT and AMD Radeon RX 7800 XT graphics cards.
• Added support for additional AMD Radeon 700M Series devices.
• Improved support for multi-GPU systems.
• Added counters back to Gfx9, Gfx10, Gfx103, and Gfx11 hardware generations. These restored counters are listed below by group:
  • Timing: 
    • TessellatorBusy, TessellatorBusyCycles 
    • VsGsBusy, VsGsBusyCycles, VsGsTime 
    • PreTessellationBusy, PreTessellationBusyCycles, PreTessellationTime
    • PostTessellationBusy, PostTessellationBusyCycles, PostTessellationTime
  • VertexGeometry: 
    • VsGsVerticesIn, VsGsPrimsIn, GSVerticesOut
  • PreTessellation: 
    • PreTessVerticesIn
  • PostTessellation: 
    • PostTessPrimsOut
  • PrimitiveAssembly: 
    • PrimitivesIn
  • TextureUnit: 
    • TexTriFilteringPct, TexTriFilteringCount, NoTexTriFilteringCount
    • TexVolFilteringPct, TexVolFilteringCount, NoTexVolFilteringCount
• New counters added:
  • MemoryCache: 
    • L0TagConflictReadStalledCycles, L0TagConflictWriteStalledCycles, L0TagConflictAtomicStalledCycles

• Add support for AMD Radeon RX 7000M series hardware.
• Add support for AMD Radeon RX 7000S series hardware.
• OpenCL support for AMD Radeon RX 7000 series hardware has been restored if using Adrenalin 23.3.2 or newer.
• Code has been updated to C++17 language standard.
• Fixed a regression that resulted in a crash on certain hardware variants.

• Add support for Radeon™ RX 7900 XTX and 7900 XT GPUs.
• GPA binary sizes have been reduced by approximately 75%.
• Update PreTessellation and PostTessellation counters to report results only when tessellation is in use.

• Updated to support the Adrenalin 22.7.1 driver.
• Added L2CacheHit counter to OpenGL for parity with other APIs on Radeon RX 5000 Series hardware.

• Add support for additional GPUs and APUs.
• Add support for raytracing counters in Vulkan on RDNA2 (Radeon RX 6000 Series) hardware:
  • RayTriTests, and RayBoxTests: These counters collect the number of ray intersections for triangles and boxes, respectively.
  • TotalRayTests: This counter collects the aggregated number of ray-box and ray-triangle intersection tests.
  • RayTestsPerWave: This counter collects ray intersection test count at a more granular level – per wave.

• Add support for additional GPUs and APUs, including AMD Radeon™ RX 6300, 6400, and 6500 series GPUs.
• Redefined derived counters on GCN™ (Vega), RDNA™, and RDNA™ 2 hardware.
• New entrypoint added: GpaGetDeviceGeneration.
• Add support for GPA_OVERRIDE_LOG_LEVEL environment variable to increase or decrease logging output.
• Fixed driver version detection in OpenGL™ and DirectX® 11.
• Extensive counter validation in DirectX® 12.
• Improvements made to sample applications.

Add support for additional GPUs and APUs, including AMD Radeon™ RX 6600 series GPUs.

• Add support for additional GPUs and APUs, including AMD Radeon™ RX 6700 series GPUs.
• Code has been updated to adhere to Google C++ Style Guide.
  • New public headers have been added.
  • Old headers are deprecated and will emit compile-time message.
  • Projects loading GPA will need to be recompiled, but no code changes are required unless moving to the new headers.
• Improvements made to sample applications.
• Updated documentation for new codestyle (and https://github.com/GPUOpen-Tools/gpu_performance_api/issues/56)

• Add support for additional GPUs and APUs, including AMD RDNA™ 2 Radeon™ RX 6000 series GPUs.
• New RT counters for DXR workloads on AMD RDNA™ 2 Radeon™ RX 6000 series GPUs:
  • RayTriTests, and RayBoxTests: These counters collect the number of ray intersections for triangles and boxes, respectively.
  • TotalRayTests: This counter collects the aggregated number of ray-box and ray-triangle intersection tests.
  • RayTestsPerWave: This counter collects ray intersection test count at a more granular level – per wave.
• New Scalar and Instruction cache counters on AMD RDNA™ Radeon™ RX 5000 series GPUs:
  • Scalar cache: ScalarCacheHit, ScalarCacheRequestCount, ScalarCacheHitCount, ScalarCacheMissCount.
  • Instruction cache: InstCacheHit, InstCacheRequestCount, InstCacheHitCount, InstCacheMissCount.
• Update the Vulkan® sample to remove the static link and use the system-specific Vulkan® loader.
• Remove OpenCL™ support on Linux®.
• Remove downloading the Vulkan® SDK by the build script.

• Add support for additional GPUs and APUs, including AMD Ryzen™ 4000 Series APUs.
• Add two new GFX10 GlobalMemory Counters for graphics using DX12 and Vulkan®: LocalVidMemBytes and PcieBytes .
• Add VS2019 project support to CMake.
• Restructure of GPA source layout to adhere to Google style.

• Add support for additional GPUs and APUs, including Radeon™ 5500 and Radeon™ 5300 Series GPUs.
• Add DirectX®11 sample application using GPUPerfAPI.
• Add per-API static counter generation.
• Decrease in GPUPerfAPI binaries size.
• Add script to package GPUPerfAPI post-build.
• Remove ROCm/HSA support.
• Add Unicode support in GPUPerfAPI for Linux.
• Bugs Fixed:
  • Fixed CMake files to respect supported build flags.
  • Fixed crash when DX12 debug layer was enabled.
  • Fixed an issue with loading of shader in GPA Vulkan® sample app.
  • Fixed an issue in Vulkan® build with newer Vulkan® SDK with amd_shader_core_properties2 extension
  • Fixed an issue with crash on unsupported Gfx6 and Gfx7 GPUs.

• Add support for additional GPUs and APUs, including Radeon 5700 Series GPUs.
• Add support for setting stable GPU clocks for DirectX11, OpenGL and OpenCL.
• Add an OpenGL sample application that uses GPUPerfAPI.
• Add basic counter validation to sample applications.
• Add support for enabling individual hardware counters that make up derived counters.
• Add two new GFX9 GlobalMemory Counters for graphics: LocalVidMemBytes and PcieBytes .
• Reformat source code using clang-format.
• Update counter documentation to contain per-hardware-generation tables.
• Bugs Fixed:
  • Fixed error handling in GPA_GetEnabledIndex , GPA_EnableCounterByName , and GPA_DisbleCounterByName .
  • Fixed an issue with Vulkan timing counters (https://github.com/GPUOpen-Tools/GPA/issues/40).
  • Fixed an issue with SALUBusy counters.
  • Fixed an issue with HiZQuadsCulledCount and HiZQuadsSurvivingCount counters on GFX8 GPUs.
  • Fixed an issue with MemUnitBusy and MemUnitStalled counters on GFX8 GPUs.
  • Fixed an issue with VSVALUBusyCycles counter on GFX9 GPUs.

• Add support for additional GPUs and APUs.
• New CMake-based build system.
• Support building on Ubuntu 18.04.
• ROCm/HSA: uses new librocprofiler64.so rather than deprecated libhsa-runtime-tools64.so library for performance counter collection.
• Timing-based counters are now reported in nanoseconds instead of milliseconds.
• New timing counter to report top-of-pipe to bottom-of-pipe duration.
• GPA now builds GoogleTest libraries on the fly rather than using prebuilt binaries.

• Add support for additional GPUs and APUs.
• Wrapped all GPA entrypoints in try/catch to ensure unhandled exceptions do not escape the GPA library.
• Add VS2017 project files.
• Bugs Fixed:
  • Fixed https://github.com/GPUOpen-Tools/GPA/issues/18.
  • Fixed support for scheduling counters on multiple sessions.
  • OpenGL: Fixed a bug in GPASample cleanup.

• Add support for additional GPUs and APUs.
• Usability improvements to GPAInterfaceLoader.h .
• New Vulkan and DirectX 12 sample applications.
• New GPA_GetSampleId entry point.
• New GPA_GetVersion entry point.
• Bugs Fixed:
  • Fixed issues with some counters on 56CU Vega10.
  • Vulkan: Fixed GPA_ContinueSampleOnCommandList .
  • Vulkan: Ensure results are ready before trying to query them.
  • DirectX 12: Fixed incorrect device reference counting issue.

• Add support for additional GPUs and APUs.
• Support for collecting hardware counters for Vulkan and DirectX 12 applications.
• Redesigned API to support modern graphics APIs.
• The documentation has been rewritten and is now available in HTML format.
• New counters added:
  • Cycle and count-based counters in addition to existing percentage-based counters.
  • New Depth Buffer memory read/write counters.
  • Additional Color Buffer memory counters.
  • For graphics, several global memory counters which were previously available only in the Compute Shader stage are now available generically.
• Support for setting stable GPU clocks.
• Counter Group Names can now be queried separately from Counter Descriptions.
• Counters now have a UUID which can be used to uniquely identify a counter.
• New entry point ( GPA_GetFuncTable ) to retrieve a table of function pointers for all GPA entry points.
• New C++ GPAInterfaceLoader.h header file provides an easy way to load and use GPA entry points.
• Bugs Fixed:
  • Fixed an issue with TesselatorBusy counter on many GFX8 GPUs.
  • Fixed an issue with FlatVMemInsts and CSFlatVMemInsts counters on many GFX8 GPUs.
  • Fixed an issue with LDSInsts counter on Vega GPUs.
  • Fixed some issues with Compute Shader counters on Vega GPUs.
  • Some counter combinations could lead to incorrect counter results.
  • Enabling counters in a certain order can lead to incorrect counter scheduling across multiple passes.
  • ROCm/HSA: GPA_OpenContext crashes if libhsa-runtime64.so.1 can’t be found.
  • ROCm/HSA: GPA does not coexist nicely with an application that also sets the HSA_TOOLS_LIB environment variable.
  • OpenGL: Fixed a crash that can occur with an incorrectly-configured OpenGL driver.
  • OpenGL: Fixed some issues with OpenGL device-detection.