TiXL Meetup 2026-07-27 / Output Management, Projection Mapping & Custom Point Shaders

← Prev | Next →

A 3h31m TiXL developer meet-up previewing the 4.3 output-management and projection-mapping system (content, surfaces and outputs, photo-based calibration, shareable setups), with extended CustomPointShader live-coding for recoloring and selecting points, extending BlendPoints on stream, and a first drone-show prototype built with particle forces.

🆕 new feature · 🛠️ improvement · 📘 operator · 📝 walkthrough · 🧠 deep dive · 🍿 showcase · 🎯 planned · 💬 discussion · ⚠️ heads-up

Chapters

• 0:00 📝 Warm-up: a text scan-line particle emitter (Text, PointsOnImage)
• 8:11 💬 Why output management: too many output windows
• 10:27 📝 Recoloring point buffers with CustomPointShader
• 13:20 🧠 f, t and bias/gain: shaping per-point values
• 18:00 📝 Live-coding a hue shift (RGB to HSV and back)
• 24:00 🛠️ Saving shader snippets as presets
• 25:06 🆕 Output management: design goals and scope
• 29:40 🧠 Logical outputs vs. unstable display numbering
• 33:22 📝 Demo: publish content, create outputs, bind displays
• 36:17 📝 Slices, surfaces and homographic projection
• 49:20 🧠 Projects, setups and machine bindings
• 53:02 💬 Where Spout senders belong; update pitfalls
• 55:28 📝 A virtual debug-overview setup
• 57:21 🧠 Calibrating projectors from a reference photo
• 1:02:39 🎯 Edge blending and wall-color compensation
• 1:09:02 💬 Community feedback on the output UI
• 1:23:00 🍿 A beat-reactive ceiling projection in ten minutes
• 1:26:52 🧠 Why MapPointAttributes takes a gradient, not a texture
• 1:31:55 ⚠️ The FX-texture input only samples luminance
• 1:34:10 📝 Sampling an image in a compute stage (SampleLevel)
• 1:40:18 📝 Writing FX1 data for downstream operators
• 1:42:49 📝 Selecting points by color similarity
• 1:51:15 🆕 BlendPoints: the sliding-range mix
• 1:57:34 📝 How to read a GPU operator's shader source
• 2:04:00 📝 Live-extending BlendPoints with mapping modes
• 2:18:40 💬 Design debate: blend modes and wrap-around pairing
• 2:33:30 🎯 Attribute-driven transitions (F1 wipes)
• 2:39:55 ⚠️ Backwards compatibility locks published parameters
• 2:45:10 💬 Drone-show constraints and export format (Sketch)
• 2:50:45 📝 A 100-drone stand-in: mesh vertices to points
• 2:54:10 📝 Speed-limited transitions via ReconstructiveForce
• 2:58:20 ⚠️ CollisionForce: sizes, cell size and misfires
• 3:05:00 🎯 Baking and validating a show with PointTrailFast
• 3:14:17 📘 VelocityForce: min/max speed clamps
• 3:16:39 🧠 Inside CollisionForce: spatial hashing passes
• 3:26:33 📝 Debugging collision sizes with sphere instances