Adrift Shader Profiler

An on-screen GPU profiler for Iris shaderpacks.

- Press **I** to show every shader pass your pack runs, timed on the GPU, sorted by cost, with a graph of the last four seconds. **Shift+I** resets the stats.
- Rows for what Iris doesn't label: terrain, entities, Sodium chunk uploads, Distant Horizons LODs, and what other mods draw.
- Shows GPU against CPU frame time, garbage-collection pauses and allocation rate, so a stall doesn't pass for a slow shader.
- `/shaderprof capture <frames> [label]` saves a window of frames to JSON for comparing builds.