Palette for 1bpp bitmaps
lazarus / 39-Graphics

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lagprogramming · 2024-10-03 12:15

Do bitmaps with 1bpp pixel format require palettes?
I think they do but I'm not sure.

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af0815 · 2024-10-03 16:15

From Wikipedia https://en.wikipedia.org/wiki/BMP_file_format - See
Pixel format

QuoteThe 1-bit per pixel (1bpp) format supports 2 distinct colors,
(for example: black and white). The pixel values are stored in each
bit, with the first (left-most) pixel in the most-significant bit of
the first byte.[5] Each bit is an index into a table of 2 colors. An
unset bit will refer to the first color table entry, and a set bit
will refer to the last (second) color table entry.