Class GlyphAtlas

src/visualization/glyph_atlas.h:44–54

Pure CPU-side glyph atlas data -- no GL, no Qt. Produced by finalize_strip_atlas() below from a rendered single-line glyph strip, and consumed by GLTextRenderer::upload_atlas() to populate a GL texture.

// finalize_strip_atlas() below from a rendered single-line glyph strip, and
// consumed by GLTextRenderer::upload_atlas() to populate a GL texture.
struct GlyphAtlas {
    float texture_width{0};  // pow2 dims
    float texture_height{0}; // pow2 dims
    std::vector<std::uint8_t>
        pixels; // R8, texture_width*texture_height, packed rows

    Array_256_2 offsets{};
    Array_256_2 advances{};
    Array_256_2 sizes{};
    Array_256_2 tls{};
};

// Takes the rendered single-line strip (grayscale8, strip_w x strip_h,
// glyphs laid left-to-right at the given advances) and produces the