Uses in 3D Rendering
Additionally, post-processing is commonly used in 3D rendering, especially for video games. Instead of rendering 3D objects directly to the display, the scene is first rendered to a buffer in the memory of the video card. Pixel shaders are then used to apply post-processing filters to the image buffer before displaying it to the screen. Post-processing allows effects to be used that require awareness of the entire image (since normally each 3D object is rendered in isolation). Such effects include:
- High dynamic range rendering
- Bloom
- Motion blur
- Screen Space Ambient Occlusion
- Cel shading
- Crepuscular rays
- Film grain simulation
- Depth of field
- Shadow mapping
Read more about this topic: Video Post-processing
Famous quotes containing the word rendering:
“The problem is that we attempt to solve the simplest questions cleverly, thereby rendering them unusually complex. One should seek the simple solution.”
—Anton Pavlovich Chekhov (1860–1904)