30 years ago, we didn't have 8+ megapixel displays. And the GPUs were character-based, with only 256 different characters, usually 16 colors/each. That's the m

30 years ago, we didn't have 8+ megapixel displays. And the GPUs were character-based, with only 256 different characters, usually 16 colors/each. That's the main reason for the hardware requirements. Essentially, these shaders emulate a character-based fixed function GPU from 30 years ago, adding features like more colors, Unicode, and custom fonts.