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by Const-me 591 days ago
> none of the major APIs expose a 1-bit texture format AFAIK so R8 would be the next best thing

I think the next best thing is BC4. The compressed format stores 8 bits/pixels grayscale texture compressed into 8 bytes / 4x4 pixels i.e. 4 bits/pixel, twice smaller compared to R8.

https://learn.microsoft.com/en-us/windows/win32/direct3d10/d...