Skip to content
Debugging tools for Direct3D-based software
Branch: master
Clone or download
billkris-ms Merge pull request #2 from microsoft/try-get-symbols-from-app
Script cleanup and try to get DRED types from process module symbols
Latest commit 85d6578 Jun 21, 2019
Type Name Latest commit message Commit time
Failed to load latest commit information.
D3DDred-WinDbg The !d3ddred output is much more compact Jun 20, 2019
.gitignore Initial commit Feb 15, 2019
LICENSE Initial commit Feb 15, 2019


This is a WinDbg Javascript extension that makes it much easier to debug D3D12 DRED (Device Removed Extended Data) state after a device removed event.

Getting Started

Loading the script

In the WinDbg console, enter:

.scriptload <full path to D3DDred.js>

Using D3DDred.js

The D3DDred debugger extension is a visualizer script. Visualizers provide a custom view of in-application data when using the dx command.

After loading the script, you would typically start by entering:

dx d3d12!D3D12DeviceRemovedExtendedData

If there is DRED data available you would expect to see something like:

(*((d3d12!D3D12_DEVICE_REMOVED_EXTENDED_DATA1 *)0x7ffb0449f008))                 : [object Object] [Type: D3D12_DEVICE_REMOVED_EXTENDED_DATA1]
    DREDVersion      : 0x2
    Data             : [object Object] [Type: D3D12_DEVICE_REMOVED_EXTENDED_DATA1]

Clicking on Data will further expand a visualized view of the DRED data:

(*((d3d12!D3D12_DRED_PAGE_FAULT_OUTPUT *)0x7ffb0449f018))                 : [object Object] [Type: D3D12_DRED_PAGE_FAULT_OUTPUT]
    [<Raw View>]     [Type: D3D12_DRED_PAGE_FAULT_OUTPUT]
    PageFaultVA      : 0x2881e4000
    ExistingAllocations : Count: 2
    RecentFreedAllocations : Count: 1

We look forward to your feedback.


This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit

When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact with any additional questions or comments.

You can’t perform that action at this time.