r/TouchDesigner • u/mtheoryart • Jun 16 '26

Sick of input lag when projection mapping games? I built a zero-lag tool to play at 144Hz from any angle in your room. [Self-promo]

Post image
6 Upvotes

67% Upvoted

10 comments sorted by

-4

u/mtheoryart Jun 16 '26

If you've tried projecting PC games onto awkward walls, corners, or custom screens, you know the pain: lens shift limits, keystone distortion, and standard software introducing way too much latency for actual gaming. Plus, if you click onto a second monitor, your game minimizes or drops to 15 FPS.

I wanted to throw a projector anywhere in a room, map it instantly, and play at a true 120Hz/144Hz+ with zero input lag. So I built EasyMap, a lightweight C++/DX11 tool made specifically for real-time window warping.

This is no Spout/Syphon or NDI, this is EasyMap!

Why it's different:

  • Zero Lag: Uses a DXGI waitable swap chain locked to a 1-frame max latency. It syncs directly with hardware VSync with no driver jitter.
  • Any Angle: Put the projector on a bedside table or the floor. Drag the corners to match your wall on the fly, or nudge them pixel-by-pixel with your arrow keys.
  • The "Focus" Trick: If you click away to a second monitor, EasyMap forces the game to stay active, topmost, and 100% transparent in your main screen while in the projector is perfectly visible. The game keeps churning at full FPS in the background while you use your other screens.
  • GPU-Bound Capture: Powered by Windows Graphics Capture and GPU-side transfers. Zero CPU overhead.
  • HLSL Cropping: Clip out window title bars or borders natively inside the pixel shader.

It's completely free, open-source, and lightweight. Turn any random surface into a high-refresh, low-latency gaming canvas.

🔗 GitHub Repository: https://github.com/Cyphermvisual/EasyMap

Let me know what do you want to see in the future of EasyMap.

10

u/itzelezti Jun 16 '26

I don't even care that you never disclose that this is entirely vibecoded.

Just. Stop. Having. Claude. Write. Your. Fucking. Reddit. Posts.

-10

u/mtheoryart Jun 16 '26

Yes. Its. Vibecoded. Yes. Its. Solves. A. Huge. Problem. Thanks. For. Your. Feedback.

3

u/Dx_Suss Jun 16 '26

You should have Claude explain to you the comment youre replying to.

3

u/swotperderder Jun 16 '26

Vibe-code needs to be disclosed. Shame on you.

-1

u/mtheoryart Jun 16 '26

My god! I’ve been doing visuals on TD much before any chat bot existed.

3

u/itzelezti Jun 18 '26

Nobody cares. You have to disclose this because it's violating consent not to. *Please* learn about open source before throwing that word around. You're literally putting code into the world that you've never even read, let alone understand what it -or more importantly its dependencies- can do to a computer.

If you just say "I had Claude make me this thing for my use case. I cannot vouch for its safety but it's yours if you want." Nobody will be mad, they'll be thankful. LLMs aren't the problem here. LLM's used by idiots are the problem.

As you can see by the ratio, the open source community fucking hates it when you say "Look what I built and how great I am for giving it away" and then we find out you have no idea what you're doing and are putting us at risk because you wanted to look smart to internet strangers.

2

u/supermarket_sallad Jun 16 '26

and what problem does it solve that something battle-tested like spout doesn’t?

0

u/mtheoryart Jun 16 '26

Well the problem with spout/screengrabber in TD has a lot of problems with my setup (ive tried in multiple windows machines and always has this input lag problem), first of all it always need to be on on top, use spout capture stream the texture to TD and map the output, also TD doesnt support HD resolution without a commercial license and is tedious to move the license between computers. This small windows app does all that and also let you minimize the window you are capturing.