#vmat

Two-stage flow: Blender headless emits Y-up OBJ, then pure Python writes vmats/vmdls and a C# model catalog.

ERROR models or white materials persist after fixing the source: delete the compiled artifact AND touch the source file to force recompilation, or poke asset_compile per source file.

Forge delivery job errors out but the build stage's previewGlbUrl stays downloadable: recover the GLB through Blender into your standard delivery shape instead of re-spending.

Per-cell dither or contour-wander in a greedy voxel mesher turns cliff skirts into vertical stripes: detect walls and key strata on raw height bands with dither neutralised.

CC0 kits import like any OBJ+vmdl; city kits share colormap.png, nature kits need per-color vmats, and facing is a per-model yaw guess.

Per-instance Tint on a flat-color vmat (white PNG + g_vColorTint) rotates hue or crushes random instances to black: use scale/yaw jitter instead.

A per-cell white-noise hash for terrain shade choice reads as a 50/50 checkerboard. Use a smooth low-frequency noise field instead, confining the hash to threshold-edge dithering.

A repeating red "Texture manager doesn't know about texture ... default_mask ... returning error texture" pair on engine/RenderSystem is base-menu-addon noise mounted into every project, not your content. It repeats per draw call. There is no supported way to mute it from game code. Filter it visually.

A hard SkyBox2D.SkyMaterial swap produces a visible pop, and stacking two SkyBox2D components with Tint alpha crossfade does not composite. The fix is a single custom sky shader that holds all time-slot textures and blends them by weight.

Shader field support is unknown and no .shader source exists: check the install's templates/ folder for authoritative syntax instead of grepping sibling projects.

AI mesh generators (Tripo, Meshy, Rodin) deliver textured OBJ+vmdl, but modeldoc32 headers, ~1m normalize, corrupt textures, bare texture paths, and missing colliders will ERROR the asset until patched.