Computer animation can also be realistic with or without the photorealistic rendering. The short features techniques such as photorealistic lighting, shading, and compositing. He has made extensive contributions to interactive photorealistic rendering. The game included SVGA graphics and photorealistic background pictures. Google Earth shows 3D building models in some cities, including photorealistic 3D imagery. Pixar's photorealistic open API RenderMan was used to render the crowd. Concept art ranges from stylized to photorealistic depending on the needs of the IP. Image-based Techniques for the Creation and Display of Photorealistic Interactive Virtual Environments. Light sensitive polymer plates allow for photorealistic etchings. Richter has produced abstract as well as photorealistic paintings, and also photographs and glass pieces. Developers of this era of 3D engines often tout their increasingly photorealistic quality. Many of the reviewers praised the sophistication of its nearly photorealistic backgrounds. The computational power required can be expensive because of their ability to produce photorealistic results. Specialized software may be used to combine traditional medium effects and photorealistic effects. Instead Oxygen icons opt for a more photorealistic style.