media: portable font lookup

Card: standardized form

Hero video: 30 fps mp4, labeled acts

Hero video: 30 fps mp4, labeled acts

Add card

Uploaded using `kernel-builder`.

Hero: three acts (appearance, geometry, fog), 384px

Upload media/inverse.gif with huggingface_hub

v3: geometry gradients (dual-number interior + shadow and camera silhouette edge sampling)

v3: plastic, rough dielectric, per-texel emission, homogeneous medium

Add hero

Upload media/inverse.gif with huggingface_hub

Uploaded using `kernel-builder`.

Per-texel albedo textures with bilinear-footprint adjoints

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Per-texel albedo textures with bilinear-footprint adjoints

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Pure-torch BVH build; drop the numpy dependency

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pathtracer-diff v1: differentiable path tracer source tree

initial commit