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Grant Johnson @warheart.bsky.social · 07/08/2026

Been toying with an MCP server for #quackdebugger this week. The debugger is entirely inside a .dll, so it just loads that and runs headless debug sessions. It's still fairly bare bones, but Claude can now open a program, start a debug session and dump/summarise info about both.

Output from Claude summarising a debug session using the Quack MCP Server.

Output from Claude summarising a program using the Quack MCP Server.

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Grant Johnson @warheart.bsky.social · 07/05/2026

Added support for the new DebugBreak() to #quackdebugger, although I realised I can support it in all shader models, not just SM6.10. It breaks as you expect in the local thread, but I also added analysis to see if any threads in the dispatch hit it.

A debug break hit in a shader thread being debugged.

Breakpoint tracking analysis showing the hit rates of 2 code breakpoints.

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Grant Johnson @warheart.bsky.social · 09/09/2025

WIP a bit on the "threads" window so you can see which thread/wave of the group you are watching, and whether the other threads are active/inactive. Also allows fast switching between threads in the group. #quackdebugger

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Reposted by Grant Johnson

Grant Johnson @warheart.bsky.social · 30/07/2025

It's been a while since I posted about #quackdebugger. I'm still working on it.. I've been through a bunch of prototypes, but finally found something I'm happy with. I rewrote the backend from scratch and switched to GfxReconstruct for capturing. (Source obfuscated for licensing)

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Grant Johnson @warheart.bsky.social · 30/07/2025

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Reposted by Grant Johnson

The Horror Game Awards @horrorgameawards.bsky.social · 15/12/2024

Congratulations to @cagamesofficial.bsky.social on winning the Most Anticipated Game Award! #THEHORRORGAMEAWARDS

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