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We present a novel volumetric representation for the aggregated appearance of complex scenes and a pipeline for LoD generation and rendering. The core of our representation is the\n            <jats:italic>Aggregated Bidirectional Scattering Distribution Function<\/jats:italic>\n            (ABSDF) that summarizes the far-field appearance of all surfaces inside a voxel. We propose a closed-form factorization of the ABSDF that accounts for spatially varying and orientation-varying material parameters. We tackle the challenge of capturing the correlation existing locally within a voxel and globally across different parts of the scene. Our method faithfully reproduces appearance and achieves higher quality than existing scene filtering methods. 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