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"id": "single-software-execution--cli--blender--task-27--ubuntu",
"snapshot": "Blender-4.2.3",
"instruction": "Triplanar Projection `/home/user/Desktop/scene.blend` contains a torus mesh object `TorusTri` at the origin (major_radius=1.0, minor_radius=0.35, ~1152 verts) with NO UV layer (mesh.uv_layers is empty) and a plain flat-grey Principled BSDF material `TriplanarMat`. Launch Blender by running `blender` from a terminal. On this machine, use `/opt/blender/blender` for Blender command-line or background runs when working on `scene.blend`.\n\nA camera sits at (0, -4, 2) aimed at the origin, with an area light lighting the torus. Cycles is configured for 512x512, 64 samples, denoising ON. Your job: rebuild `TriplanarMat` as a triplanar-projection shader that samples a checker texture (Cycles' `ShaderNodeTexChecker`) via three separate 2D projections — one per world axis plane — and blends them using the absolute value of the surface normal along each axis. Then render frame 1 to `/home/user/Desktop/render.png` at 512x512 and save the answer to `/home/user/Desktop/answer.blend`. ## Render - Render engine: CYCLES, 512x512, 64 samples, denoising ON. - Frame 1 --> `/home/user/Desktop/render.png`. - View transform: Standard. - Save the blend to `/home/user/Desktop/answer.blend`. ## Requirements 1. `/home/user/Desktop/answer.blend` exists and opens. 2. Mesh object `TorusTri` exists with ~1152 verts. 3. Material tree contains >= 3 `ShaderNodeTexChecker` nodes. 4. Material tree contains a `ShaderNodeTexCoord` node (coord source). 5. Material tree contains a `ShaderNodeNewGeometry` node (normal source). 6. Principled BSDF `Base Color` is driven (transitively via the shader graph) by all 3 Checker texture nodes. 7. `/home/user/Desktop/render.png` exists and is 512x512. 8. Rendered mean luma is in [0.25, 0.85] (visible lit torus). 9. Along the horizontal centreline strip (y in [180, 320)) of the rendered image, the median per-column luma std is in [0.02, 0.40] — i.e. the triplanar pattern is visible (not flat) but transitions smoothly (no hard seam jumps).",
"source": "https://docs.blender.org/manual/en/4.1/; https://docs.blender.org/api/4.1/; https://developer.blender.org/docs/release_notes/4.1/; https://www.loc.gov/preservation/digital/formats/fdd/fdd000507.shtml",
"config": [
{
"type": "upload_file",
"parameters": {
"files": [
{
"local_path": "task-27/init_file/scene.blend",
"path": "/home/user/Desktop/scene.blend"
}
]
}
}
],
"trajectory": "trajectories/",
"related_apps": [
"blender"
],
"artifact_paths": [
"/home/user/Desktop/answer.blend",
"/home/user/Desktop/render.png"
],
"evaluator": {
"postconfig": [
{
"type": "upload_file",
"parameters": {
"files": [
{
"local_path": "task-27/eval.py",
"path": "/home/user/Desktop/eval.py"
}
]
}
}
],
"func": "exact_match",
"result": {
"type": "vm_command_line",
"command": "python3 /home/user/Desktop/eval.py",
"shell": "true"
},
"expected": {
"type": "rule",
"rules": {
"expected": "True\n"
}
}
},
"proxy": false,
"fixed_ip": false,
"possibility_of_env_change": "low"
}
|