| --- |
| license: mit |
| task_categories: |
| - image-to-image |
| tags: |
| - rendering |
| - global-illumination |
| - path-tracing |
| - renderformer |
| --- |
| |
| # SparseRenderFormer Cycles references |
|
|
| Path-traced references in [RenderFormer](https://github.com/microsoft/renderformer)'s |
| exact HDF5 schema, so they load with RenderFormer's own tooling unchanged. |
|
|
| ## Why this exists |
|
|
| RenderFormer was trained on two million scenes and sixteen million Cycles |
| renders, and neither the scenes nor the sampler that produced them was released. |
| Without a path-traced reference, a modified architecture can only be evaluated |
| against RenderFormer's own output, which cannot distinguish "matches the |
| teacher" from "renders correctly". |
|
|
| ## Contents |
|
|
| - `cycles/h5/` — 59 scenes, RenderFormer HDF5 schema |
| - `cycles/renders/` — Blender Cycles references, 4096 adaptive spp with |
| denoising, 256x256, EXR |
| - `cycles/scenes/`, `cycles/meshes/` — scene JSON and OBJ, to re-render or modify |
| - `large_16384/`, `large_32768/` — 60 larger scenes, exported but |
| **not yet rendered** |
|
|
| ## Protocol |
|
|
| Cycles at 4096 adaptive samples per pixel with denoising, at 256x256. This |
| matches what RenderFormer and RenderFormer++ both report, verified against their |
| papers rather than assumed. |
|
|
| ## Validation |
|
|
| The released `microsoft/renderformer-v1-base` checkpoint scores **31.23 dB** |
| over 20 of these scenes, against the 29.8 dB RenderFormer reports at this |
| resolution. Scoring slightly above is expected: these scenes are simpler than |
| the asset-derived ones their test set is built from. |
|
|
| ## Limitations, stated plainly |
|
|
| - 59 scenes is enough for a pipeline check or an ablation, and **not** |
| enough to train a renderer. A controlled sweep on this data found PSNR moving |
| 4.53 dB purely with training-set size, so treat results fine-tuned on it as |
| bounded by the data rather than by the method. |
| - Rendered scenes cap at 3,841 triangles. The larger splits exist but their |
| references are not rendered yet. |
| - Images are EXR and genuinely high dynamic range. Read them with a backend that |
| preserves that: OpenCV's default EXR path clips to 1.0 and drops alpha, which |
| is silent and ruins training. |
|
|
| ## Attribution |
|
|
| Objects derive from Objaverse; see `ATTRIBUTION.md` for per-object licences. |
| Renders and derived geometry only, never the original meshes. |
|
|
