FOSS4G 2019 Bucharest Workshops speaker: Iván Sánchez Ortega .ical Talks Real-time raster geoprocessing with WebGL A two-piece workshop: A hands-on introduction to WebGL and the GLSL shading language for pixel manipulation, and then a walkthrough of Leaflet.TileLayer.GL, which allows to use shaders to manipulate raster pyramids.