This pre-Renaissance artist used perspective techniques to communicate a sense of realism. His frescoes had a great effect on art during the Renaissance.?

The pre-Renaissance artist you're referring to is likely Giotto di Bondone. He is renowned for his innovative use of perspective and spatial organization in his frescoes, which helped to create a more realistic depiction of human figures and their environments. Giotto's work laid the groundwork for later Renaissance artists, influencing their approach to composition and realism. His ability to convey emotion and depth marked a significant shift in the art of his time.