100 lines
5.7 KiB
Markdown
100 lines
5.7 KiB
Markdown
# Renderer, Material, and Component Foundation Evaluation
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> **Evidence record — not current product guidance.** Use the [documentation index](../../../README.md) for current behavior and architecture.
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Date: 2026-07-11
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Branch: `codex/renderer-material-component-foundation`
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This record captures implementation evidence for the dedicated skinned renderer, shared Material
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and Material Instance workflow, registry-driven authoring components, and custom Surface contract.
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The permanent design contracts live in [ADR 0033](../../../adr/0033-dedicated-skinned-mesh-renderer.md),
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[ADR 0034](../../../adr/0034-registry-driven-authoring-components.md),
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[ADR 0035](../../../adr/0035-shared-material-assets-and-renderer-slots.md), and
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[ADR 0036](../../../adr/0036-surface-abi-and-solari-parity.md). The user workflow lives in the
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[material-system guide](../../material-system.md).
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## Live editor evidence
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All images below are native Wayland captures from the running editor. The temporary actors and
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assignments used for visual verification were not saved into the authored scene.
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### Dedicated skinned renderer and stable material slots
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The actor is hydrated through `SkinnedMeshRenderer`, not `StaticMeshRenderer`. Its imported
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hierarchy remains intact, the configured default Standing clip is sampled in edit mode, and every
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draw binding exposes a stable slot ID plus source-material fallback.
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### Shared custom Surface assigned through a Material Instance
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Applying `surface_tint_instance` updates the existing hydrated draw bindings in place. The visible
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blue Surface evaluation does not respawn the hierarchy or reset the sampled pose.
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### Sparse Material Instance authoring
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Instances reference one direct base Material. Unchecked values inherit; selecting or dropping a
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texture creates only that override, and **Clear** removes the binding so inheritance resumes.
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### Registry-driven component composition
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The actor combines renderer and light components without an `ActorKind` exclusivity rule. The
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registry owns add/remove/reset/copy/paste/history/persistence behavior; `ActorKind` remains a
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derived compatibility and presentation hint.
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### Larger material thumbnail previews
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Material spheres now fill roughly 78-81% of the preview while retaining edge padding. Model and
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mesh-subasset framing is unchanged.
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Additional captures:
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- [Material editor and Create Instance action](material-editor-create-instance.png)
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- [Registry-driven Add Component categories](component-registry-add-menu.png)
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## Acceptance results
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| Area | Result | Evidence |
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|------|--------|----------|
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| Dedicated static/skinned ownership | Pass | Separate authored/hydrated renderer types; rigged/animated manifests are rejected by static hydration |
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| Pose lifecycle | Pass | Explicit stable default clip; transform and morph-weight baseline restore on stop, controller removal, preview reset, and PIE exit |
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| Renderer material slots | Pass | Stable named IDs, imported fallback, explicit assignment, orphan retention, and in-place material patching |
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| Material assets/instances | Pass | Versioned shared assets, direct-base sparse instances, Apply/Revert/Create Instance; property-block runtime application/promotion is isolated in #53 |
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| Texture parameters | Pass | Project-wide picker includes imported texture subassets; base/schema/stored/instance slots share browse, drop, reject, and clear behavior |
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| Component lifecycle | Pass | Stable registry IDs, reflected transactions/history, persistence allowlist, independent active state, and compatible composition |
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| Surface raster/Solari semantics | Pass for eligible geometry | Shared ABI packing, evaluator, textures, normal/emissive/unlit values, and cutout predicate |
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| Project migration | Pass | Transactional schema-v4 upgrader, backup/rollback path, canonical slots and active-state split; second dry run is empty |
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| Project validation | Pass | 59 dependencies, 5 non-blocking findings, 0 blocking errors |
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## Automated verification
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| Command/suite | Result |
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|---------------|--------|
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| `cargo test -p shared --offline` | 84 passed |
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| `cargo test -p scene --offline` | 64 passed, 1 ignored migration fixture |
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| `cargo test -p game --lib --offline` | 37 passed |
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| `cargo test -p game_hot --lib --offline` | 16 passed |
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| `cargo test -p editor --lib --offline` | 171 passed |
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| `cargo test -p blacksite_surface --offline` | 3 passed plus doc tests |
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| `cargo test -p bevy_solari --lib --offline` | 1 passed |
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| `cargo --locked --offline validate-levels` | 0 blocking errors |
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| `cargo --offline upgrade-project --project . --json` | No pending changes or warnings |
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| `cargo fmt --all -- --check` / `git diff --check` | Pass |
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## Deliberate boundary
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Bevy 0.19's maintained Solari path does not expose dynamic post-morph/post-skin vertex buffers and
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BLAS updates. Skinned and morph-deformed actors therefore remain visible in raster but are omitted
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from ray tracing with an actionable diagnostic. This is safer than tracing a stale bind-pose ghost;
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dynamic deformed BLAS support is the independently scoped Gitea #54. Runtime property-block
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application and promotion are independently scoped in #53; this foundation record does not claim
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either follow-up.
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