A few weeks ago we released a version of PIX that includes a Preview release of a new implementation of Timing Captures. This release represents a significant reboot of our CPU performance tools in PIX. We’ve gotten a lot of feedback over the last few years about how our CPU tools in PIX compare with other AAA game-focused profiling tools.
Today we released PIX 1904.23, available for download here. This release contains a preview of the new Timing Capture implementation and improvements to DXIL shader debugging and pixtool as well as various other improvements and bug fixes. Highlights
Preview of a new implementation of Timing Captures (see below) HLSL variables are now available during DXIL shader debugging New pixtool features:
Today we released PIX-1903.26, available for download here. This release includes support for Variable Rate Shading in GPU Captures, and it adds support for Occupancy on NVIDIA Turing GPUs such as an RTX 2080.
Variable Rate Shading Variable Rate Shading (VRS) is a powerful new DirectX 12 feature that allows applications to significantly reduce their pixel shading work in exchange for minimal loss of visual fidelity.
Today we released PIX-1903.12, available for download here. This release includes an exciting new feature in GPU Captures: High Frequency Counters. With High Frequency Counters, developers can plot graphs of GPU hardware counter values over time and correlate ranges of the graphs back to specific events within their GPU Capture.
Today we released PIX-1901.28, which can be downloaded here. In this release we’ve made improvements to Timing Data in GPU Captures, added support for new GPUs from NVIDIA and AMD, and fixed miscellaneous other issues described below. Timing Data Improvements for GPU Captures We have significantly reworked how PIX collects Timing Data in GPU Captures.
Today we released PIX-1812.14, which adds support for selecting the playback adapter, displaying unbound resources and improvements to the occupancy lane. This release also includes various miscellaneous fixes detailed below. Playback Adapter Selection PIX now allows you to select the GPU on which to play back a recording.
Today we released PIX-1810.24, which adds support for the final DirectX Raytracing (DXR) API that’s part of the Windows 10 October 2018 Update (a.k.a. “RS5”). This release also fixes miscellaneous other bugs, including an incompatibility between PIX and the latest AMD 18.40+ drivers.
Today we released PIX 1908.16 which can be downloaded here. This is a servicing release that fixes a couple of issues that causes PIX to crash when inspecting or debugging shaders, otherwise it is identical to PIX 1908.02.
If you’re running the 1903 build of Windows 10 (the Spring 2019) update, you must have KB4505903 installed to take Function Summary, Callgraph, and Tracked Functions captures. Without this update, your title will hang when taking one of these captures. To check whether you have this update,
Today we released PIX 1908.02, which can be downloaded here. This release fixes miscellaneous bugs that were reported to us by customers. It also adds new CPU features to New Timing Captures, and adds some final touches to the new DirectX Raytracing (DXR) Pipeline View in GPU Captures.
GPU timing data was added to the New Timing Captures preview feature in the PIX 1906.14 release. This allows developers to view GPU work submission and execution, including async compute. Getting Started The application should be launched with the following GPU timings checkbox checked in the options to enable timing data collection.
A context switch occurs when a CPU core switches from executing code on one thread, to executing code on a different thread, or going to idle. When the OS switches the thread that is running on a CPU, it must save and restore state both for the thread that is being switched out,
The most common way to populate the Range Details view in the new implementation of PIX Timing Captures is to drag select a range of time in the Timeline using the mouse. When you complete your selection, Range Details is populated with the data from all Thread and Core lanes for the range of time you selected.
The Metrics view in New Timing Captures allows you to graph the duration of PIX CPU events and any counter values that are reported using the PIXReportCounter API. Graphing event durations is fairly discoverable in the UI, but I think it’s less well-known that counter values can be graphed as well.
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