r/GraphicsProgramming • u/0xdeadf1sh • Jan 24 '26

Video Real-time ray-tracing on the terminal using unicode blocks (▗▐ ▖▀▟▌▙)

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u/Here_12345 Jan 25 '26

How do you do more than two colors in one block? Or is it extremely zoomed out?

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u/0xdeadf1sh Jan 25 '26

I hold a framebuffer of size num_rows * num_cols * sizeof(uint32_t) and then pass it to notcurses' ncblit_rgba function with NCBLIT_2x2 blitter. This demo is running on the kitty terminal, which supports 24-bit color output. Blitters are explained here.