Airport runway markings look stretched across the pavement mesh in the digital twin. Which cause best explains the unexpected visual result?
Select an answer to reveal the explanation.
Short Explanation
When you see runway paint stretch across the pavement, you can check how the mesh’s UVs are being interpolated. Correcting the UV primvar interpolation can restore the paint alignment without rebuilding the whole airfield package.
Full Explanation
Stretched runway markings on a pavement mesh are a classic visual symptom of incorrect UV primvar interpolation on the marking geometry. Marking textures and procedural paint rely on UV coordinates; if the UV primvar uses the wrong interpolation, such as faceVarying instead of vertex, or has a mismatched face-varying layout after a mesh edit, samples can stretch, shear, or smear across the pavement even when albedo maps and materials are valid. Correcting the UV interpolation restores paint alignment without rebuilding the airfield package. Muting TfDebug does not prevent composition arcs from loading: TfDebug controls diagnostic tracing verbosity, so silencing it would more likely hide load failures than cause stretched paint on a visible mesh. Storing the airport ICAO code as the only mesh extent value also fails conceptually: extent is an axis-aligned bounds hint for bounds or acceleration, not a UV layout, and an ICAO string is neither a valid geometric extent nor a cause of texture stretching. Replacing USDC crates with empty payloads that omit defaultPrim removes or defers content rather than systematically stretching UVs on markings that still render. Exam caveat: stretched textures can tempt you to blame materials, crate format, or global diagnostics; distinguish shading and UV primvar correctness from composition packaging and debug mute state. Practical check: select the marking mesh, verify that the UV primvar name and interpolation match the material’s expected layout, compare UV extents with a known-good runway section, re-export or re-author UVs if needed, and confirm the markings align before changing crates, payloads, or TfDebug categories.