Update README.md

README.md

@@ -321,3 +321,63 @@ If `SLANG_ROOT` or `MSDF_ATLAS_GEN_ROOT` is not set, the workflow falls back to
 - add spout input/output (https://github.com/leadedge/Spout2)
 - Add Aja input and output (Assuming i can get a hold of an aja card)
 - Add bluefish input and output (Assuming again card acess)
+- Endpoint to show OSC paths seperatly instead of a part of the control UI
+
+
+## Custom shader UI
+Extend the shader manifest contract
+Add optional UI metadata:
+
+"ui": {
+  "type": "webComponent",
+  "entry": "ui/controls.js",
+  "tag": "my-shader-controls"
+}
+Keep this optional. No custom UI means current default controls.
+
+Expose UI metadata in /api/state
+Add the parsed ui block to each shader/layer summary so the React app knows whether a layer has a custom control panel.
+
+Serve shader package UI assets safely
+Add a route like:
+
+/shader-assets/{shaderId}/ui/controls.js
+It should only serve files inside that shader package folder.
+
+Add a React host component
+Create something like ShaderCustomPanel.jsx that:
+
+dynamically imports/registers the custom element
+passes layer, parameters, and setParameter
+catches load/render failures
+falls back to the normal ParameterField grid
+Define the custom element API
+Keep it small and stable:
+
+element.layer = layer;
+element.parameters = layer.parameters;
+element.setParameter = (id, value) => {};
+element.requestReset = () => {};
+Custom UI should never bypass manifest validation.
+
+Add fallback and escape hatch
+Even if custom UI loads, provide a “Default controls” toggle per layer. That is the life raft.
+
+Add tests
+Backend:
+
+manifest parser accepts valid UI blocks
+rejects unsafe paths like ../
+/api/state includes UI metadata
+asset route refuses files outside the shader package
+Frontend:
+
+falls back when custom component fails
+calls /api/layers/update-parameter through the same path as default controls
+Document the contract
+Add a section to shaders/SHADER_CONTRACT.md with:
+
+manifest example
+custom element lifecycle
+available properties/functions
+rule: all controls must map to declared parameters