program width: 100% height: 100% format: rgba32f filter: nearest wrap: edge fragment: GTU-pass1.fs program height: 100% format: rgba32f filter: nearest wrap: edge vertex: GTU-pass2.vs fragment: GTU-pass2.fs program height: 100% format: rgba32f filter: nearest wrap: edge fragment: GTU-pass3.fs program format: rgba8 filter: nearest wrap: edge vertex: GTU-pass4.vs fragment: GTU-pass4.fs output filter: nearest