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OP article says

>"Instead of drawing 1000 glyphs into 1000 tiny textures, we’ll just allocate one huge texture and subdivide it into a grid of 1000 glyph cells."

that's the same as John Carmack's MegaTexture. First game to use it was Enemy Territory: Quake Wars (2007).

Him talking about the concept back in 2006:

Rage originally used 1TB of texture that had to be reduced to 20GB for the release version: