PIX on Windows

Performance tuning and debugging for DirectX 12 games on Windows

Timing Capture Statistical Comparison Features

November 1, 2023 Nov 1, 2023 11/1/23
Steven Pratschner
Starting with the 2310.30 version of PIX on Windows, the Timing Capture Metrics view can produce a statistical comparision of the average duration for the points that represent PIX event hierarchies in two selected ranges of time.  Statistical comparisions help determine which portions of the event hierarchies had statistically different ...

PIX 2310.30: a faster PIX with many raytracing + other improvements

October 30, 2023 Oct 30, 2023 10/30/23
Austin Kinross
Today we released PIX version 2310.30, which can be downloaded here. We also released WinPixEventRuntime version 2310.30, which can be downloaded here. This release includes many new features and improvements along several key themes: Thank you for all of your feedback and suggestions, and please them coming! The best ways ...

PIX 2306.21-preview: Work Graphs support

June 22, 2023 Jun 22, 2023 06/22/23
Austin Kinross
Today we released PIX on Windows version 2306.21-preview, which can be downloaded here. This release includes initial debugging and profiling support for an exciting new D3D12 feature announced today: Work Graphs. You can read more about Work Graphs here. You can find information about which GPUs support Work Graphs (and other ...

PIX 2305.10: support for updated RenderPasses + misc other improvements

May 10, 2023 May 10, 2023 05/10/23
Austin Kinross
Today we released a new version of PIX on Windows: version 2305.10. It can be downloaded here: link.  This release includes support for the latest DirectX Agility SDK features, such as the updated RenderPasses and minor Vulkan compatibility features. The release also includes fixes for several bugs that were impacting PIX 2303.30. &...

PIX 2303.30: Misc bug fixes + preview GPU Upload heap support 

March 30, 2023 Mar 30, 2023 03/30/23
Austin Kinross
Today we released two versions of PIX on Windows: version 2303.30 and version 2303.30.002-preview. Both can be downloaded here: link.  If you’re using today’s new preview D3D12 features (GPU Upload Heaps or Non-normalized Sampling) then we recommend that you use PIX 2303.30.002-preview to debug and profile your application.  For ...

PIX and ID3D12ManualWriteTrackingResource 

March 30, 2023 Mar 30, 2023 03/30/23
Austin Kinross
Summary If you’re using GPU_UPLOAD heaps and you are experiencing capture-time performance issues when you launch your application via PIX (e.g. your game’s framerate drops) then read on to learn how ID3D12ManualWriteTrackingResource might help you.   Background When taking a GPU Capture, PIX (and other graphics debugging tools...
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Programmatic Timing Captures now available

March 20, 2023 Mar 20, 2023 03/20/23
Steven Pratschner
As described in Programmatic Captures, the PIXBeginCapture and PIXEndCapture can now be used to start and stop Timing Captures from code running in your title.  Programmatic Timing Captures are available starting with the 2303.02 release of PIX on Windows and version 1.0.230302001 of the WinPIXEventRuntime. Timing captures use several ETW ...
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Memory profiling support for allocations made from a title’s custom allocator

March 13, 2023 Mar 13, 2023 03/13/23
Steven Pratschner
Starting with the 2303.02 release of PIX on Windows, PIX timing captures can track memory allocations and frees made by your custom memory allocators. By calling the new APIs, PIXRecordMemoryAllocationEvent and PIXRecordMemoryFreeEvent, you provide PIX with the data it needs to display information about all memory allocations and frees made...
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PIX 2303.02: You asked, we listened! A bumper PIX release

March 2, 2023 Mar 2, 2023 03/2/23
Austin Kinross
Today we released PIX on Windows version 2303.02, which can be downloaded here. We have also released a new version of WinPixEventRuntime, which can be downloaded here. This release has many new features and bug fixes in direct response to requests and feedback we've received from PIX users. Thank you for all of your feedback and ...