Solidor777

Use when working on 3D-specific rendering — deferred chain, G-buffer, clustered shading, Stratum GI, ReGIR, SVGF/A-SVGF, TAA, shadow techniques, depth/HZB, anything 3D-specific. ALWAYS load titan-rendering-core first; this skill assumes core conventions. Loads Titan-specific overrides for realtime-rendering. NOT for 2D rendering or editor panels.

Use when diagnosing a Titan renderer artifact — flicker, ghosting, fireflies, banding, light leaks, seams, boil, NaN/Inf, aliasing, smear/trails, dark voids, shadow artifacts, GI instability, denoiser/TAA issues. The frame-isolation-first debugging method: capture 60Hz, diff frames / A-B vs classical, consult literature, isolate via systematic-debugging, propose (and prove) a fix, record empirically. NOT for landing the production fix (hand to titan-rendering-3d-agent), 2D rendering, or editor panels.

Use when working in titan-rendering-frame-graph, titan-rendering-core, or titan-rendering-post-process-core — frame graph DAG, RenderTarget, DevicePool, PostProcessHook, CameraFrameData, HDR intermediate, tonemap, color management. Foundational layer shared between current 3D and future 2D rendering. Loads Titan-specific overrides for realtime-rendering. NOT for 3D-specific concerns (deferred chain, GI, shadows) — load titan-rendering-3d after this.

When a Titan bench tool using Renderer3d lacks on_resize → renderer.resize(), depth_prepass_view and HZB occlusion resources are never created — DepthPrepass, HzbBuild, and SceneCull passes silently skip, and taps produce no output

When adding a camera UBO shared between Rust and WGSL, verify field-by-field that the CPU layout matches the WGSL struct — especially packed vec4 fields where reordering silently breaks the shader

When building a depth prepass for reverse-Z HZB occlusion culling, use Greater compare (not Always) — the closest fragment must win so the HZB stores the nearest occluding surface, not the farthest

extract_draw_groups uses HashMap for draw batching, making group ordering non-deterministic across frames — the GPU AABB buffer and indirect draw commands use different indices each frame, causing `back_north` to be classified as `visible` on one frame and `hzb_occluded` on another for the same camera position

When depth prepass draw_indirect produces zero depth despite correct pipeline setup, force instance_count=1 on CPU to isolate buffer vs draw path issues, and add COPY_SRC to untappable textures for frame-level inspection

Orientation map of the TITAN Foundry VTT system codebase — load this BEFORE building, adding, or modifying anything under systems/titan to learn what already exists, where it lives, the core abstractions and how they relate, and how new work should fit in. Covers the src/ layout, key classes (Check, TitanActor, DataModels, chat-message reports, rules-elements, sheets), data/control flow, and conventions (the `~/` import alias, SCSS mixins, assert()). This skill is descriptive — a map, not a rulebook — and self-updating: reconcile its knowledge against what you learned at the end of each task.

Use for any question about a codebase, its architecture, file relationships, or project content — especially when graphify-out/ exists, where the question should be treated as a graphify query first. Turns any input (code, docs, papers, images, videos) into a persistent knowledge graph with god nodes, community detection, and query/path/explain tools.

Orientation map of the TITAN Foundry VTT system codebase. Load before building, adding, or modifying anything under systems/titan to learn what already exists, where it lives, core abstractions, data flow, and conventions. This skill is descriptive and self-updating; reconcile its knowledge against what you learn at the end of each task.

Use for any question about a codebase, its architecture, file relationships, or project content — especially when graphify-out/ exists, where the question should be treated as a graphify query first. Turns any input (code, docs, papers, images, videos) into a persistent knowledge graph with god nodes, community detection, and query/path/explain tools.