grow()

void MayaFlux::Portal::Text::GlyphAtlas::grow ( )

private

Double the atlas texture and re-rasterize every cached glyph into it.

Definition at line 88 of file GlyphAtlas.cpp.

{
    const uint32_t new_size = m_atlas_size * 2;
 
    MF_INFO(Journal::Component::Portal, Journal::Context::API,
        "GlyphAtlas: growing {}x{} -> {}x{} (pixel_size={})",
        m_atlas_size, m_atlas_size, new_size, new_size, m_pixel_size);
 
    struct CachedGlyph {
        FontFace* face;
        FT_UInt glyph_index;
    };
 
    std::vector<CachedGlyph> cached;
    for (const auto& [face, glyphs] : m_cache) {
        for (const auto& glyph_entry : glyphs) {
            cached.push_back({ face, glyph_entry.first });
        }
    }
 
    m_atlas_size = new_size;
    m_texture = std::make_unique<Kakshya::TextureContainer>(
        new_size, new_size, Portal::Graphics::ImageFormat::R8);
 
    m_cursor_x = 0;
    m_cursor_y = 0;
    m_shelf_height = 0;
    m_cache.clear();
 
    for (const auto& c : cached) {
        rasterize(*c.face, c.glyph_index);
    }
 
    m_dirty = true;
}

References MayaFlux::Journal::API, m_atlas_size, m_cache, m_cursor_x, m_cursor_y, m_dirty, m_pixel_size, m_shelf_height, m_texture, MF_INFO, MayaFlux::Journal::Portal, and rasterize().

Referenced by rasterize().

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