this post was submitted on 01 Mar 2024
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An Introduction To BCn Texture Compression, Part 1: BC4 | Devfault v2 (acefanatic02.github.io)
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Texture block compression is a critical component of real-time rendering. Reducing the size of textures saves download time, disk space, memory, and GPU bandwidth. With a few exceptions (pixel art, some UI elements), it’s a reasonable expectation that all textures should be compressed to maximize these benefits. It’s important, therefore, to understand how texture block compression works at a high level. What formats work best for base colors versus normal maps versus some arbitrary packed material data?

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