post: remove internal roadmap — public-facing only

2026-06-15 22:50:19 +01:00
parent 85a6db41c5
commit 6524ac3597
2 changed files with 10 additions and 49 deletions
@@ -164,39 +164,11 @@ The platform supports three tiers by distance, all driven by the same `(clip, co

 One abstraction, three detail levels. The same code that drives 30 animals today will drive thousands of colonists at launch.

-## The engine roadmap — where we push next
+## What's deliberately not here

-The 10,000-agent load test pointed at exactly where the engine can still win. The bottleneck at extreme scale isn't the GPU skinning — it's the CPU path feeding it: C# builds arrays, marshals Variants into GDScript, GDScript loops per-instance `set_instance_transform` / `set_instance_custom_data`. Three layers of per-instance overhead, all on the main thread. The fixes are engine-deep.
-
-### Tier A — kill the per-frame CPU path
-
-**Bulk instance-upload API.** Add `set_instance_data_bulk()` that does a single memcpy into the MultiMesh buffer instead of N scripted per-instance calls. One marshalled call + one copy per herd per frame instead of thousands.
-
-**GPU-driven cull + indirect multi-draw.** A compute pass classifies frustum, distance, and LOD-tier on the GPU and writes an indirect draw buffer per tier — the CPU stops iterating instances entirely. Pairs with bulk upload: together the main thread does ~zero per-instance work.
-
-**GPU dead-reckoning of position.** Store per-instance velocity in custom data. Advance transforms from `TIME` in the vertex shader. The CPU only touches an instance on a sim snapshot (~every 0.4s), not every frame.
-
-### Tier B — skinning core upgrades
-
-**Dual-quaternion skinning.** 2 texels per bone instead of 4. Halves palette VRAM, halves per-vertex texel fetches, and fixes the "candy-wrapper" collapse on twisting joints that linear blend skinning has. A real engine-grade upgrade.
-
-**Mat4x3 storage.** The 4th column of a bone matrix is always `(0,0,0,1)` — dropping it saves 25% VRAM with zero quality loss. A quick win if dual-quat is too big a step.
-
-**Reduced-bone far LOD.** Drop fingers, tail, and face bones for the far tier — fewer fetches where detail isn't visible.
-
-### Tier C — visibility & render passes
-
-**Frustum-cull integration.** MultiMesh draws everything in `visible_instance_count` — wire per-instance frustum culling into the engine's visibility system.
-
-**Shadow-pass LOD.** The skinning shader runs again in the depth/shadow pass. Skip skinning or drop shadow casters beyond a distance — often a hidden ~2× vertex cost.
-
-### Tier D — quality & pipeline
-
-**In-shader clip cross-fade.** Blend two clip blocks per instance (second custom slot + blend factor) instead of hard state cuts — brings hero-rig smoothness to the whole crowd without a real skeleton.
-
-**Threaded bake.** Move the palette bake to a worker thread so first-encounter of a new animal type never hitches the main thread.
-
-The recommended order: bulk upload (directly fixes the measured bottleneck, small, low-risk) → mat4x3 storage (immediate VRAM win) → GPU-driven cull + indirect draw (removes CPU from the loop entirely, unlocks tens of thousands) → dual-quaternion skinning (the skinning-quality leap). The first two are a day each and compounding; the latter two are the deep engine investments that make this a genuinely AAA crowd platform.
+- **No C# wrapper.** Instantiate from GDScript via `ClassDB.instantiate()` — the binding surface is small and stable.
+- **No automatic `AnimationPlayer` integration.** You drive poses at bake time. We give you the texture. Freedom to animate however you want.
+- **No GPU occlusion culling.** That's the game's job. The engine provides the tool; the game decides what to draw.

 ## Get the build