7 Advanced PBR extensions
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In this chapter, we will delve into advanced glTF PBR extensions that build upon the base metallic-roughness model. While the base metallic-roughness model provides a starting point, it falls short of capturing the full spectrum of real-life materials. To address this, glTF incorporates additional material layers, each with specific parameters that define their unique behaviors. Our goal here is to guide you through implementing these layers from the ground up. We will introduce the concept of layers, break down some mathematical principles behind them, ...
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