Volume Rendering using Slices
•Volume is sampled using proxy geometry
•Polygons slice through the volume perpendicular to the viewing direction
•Number of slices determines quality of resulting image
•Slices usually drawn back to front
•Compositing performed using alpha blending
–“over” operator: C’i = Ci + (1 – Ai) C’i+1
–uses a lot of framebuffer bandwidth