To do anything rendering related with Impeller, you need a context.
The graphics context necessary to render text.
TypographerContext()
Create a new context to render text that talks to an underlying graphics context.
virtual ~TypographerContext()
virtual std::shared_ptr< GlyphAtlas > CreateGlyphAtlas(Context &context, GlyphAtlas::Type type, HostBuffer &host_buffer, const std::shared_ptr< GlyphAtlasContext > &atlas_context, const std::vector< std::shared_ptr< TextFrame >> &text_frames) const =0
virtual std::shared_ptr< GlyphAtlasContext > CreateGlyphAtlasContext(GlyphAtlas::Type type) const =0
virtual bool IsValid() const