Parallax occlusion mapping (POM) is an enhancement of the parallax mapping technique. Parallax occlusion mapping is used to procedurally create 3D definition in textured surfaces, using a displacement map (similar to a topography map) instead of through the generation of new geometry.[1] This allows developers of 3D rendering applications to add 3D complexity in textures, which correctly change relative to perspective and with self occlusion in real time (self-shadowing is additionally possible), without sacrificing the processor cycles required to create the same effect with geometry calculations.[2]
Parallax occlusion mapping was first published in 2005 by Zoe Brawley and Natalya Tatarchuk in ShaderX3.[1] Natalya Tatarchuk conducted presentations of the technology at SIGGRAPH in 2005.[3] It was used in ATI's 'Toy Shop Demo' to showcase the Radeon X1800's Ultra-Threaded SM 3.0 technology.[4] It is used in video games and rendering engines such as Unigine,[5] CryEngine 2,[6] and CryEngine 3 and Unreal Engine 4.[7] It has also been used to create stereoscopic images from single images.[8]
External links
edit- A closer look at POM on gamedev.net
- Dachsbacher, C., Tatarchuk, N. Prism Parallax Occlusion Mapping with Accurate Silhouette Generation as a .pdf
- Dachsbacher, C., Tatarchuk, N. Prism Parallax Occlusion Mapping with Accurate Silhouette Generation as a .mov
- Parallax Occlusion Mapping in GLSL on sunandblackcat.com
References
edit- ^ a b Engel, Wolfgang F. (2005). ShaderX3: Advanced Rendering with DirectX and OpenGL. Charles River Media. ISBN 978-1-58450-357-6.
- ^ "Unknown" (PDF).[permanent dead link]
- ^ "Sketches | Conference: SIGGRAPH 2005". Archived from the original on 2015-02-21. Retrieved 2008-11-29.
- ^ "Computing - Buying Advice & Guides".
- ^ "SDK Editions and Pricing | UNIGINE: Real-time 3D engine".
- ^ "Crytek | CryENGINE2". Archived from the original on 2009-11-30. Retrieved 2009-12-10.
- ^ "Crytek | MyCryENGINE". Archived from the original on 2009-10-17. Retrieved 2009-12-10.
- ^ "Generating stereoscopic images with parallax occlusion mapping". Archived from the original on 2012-02-19. Retrieved 2008-11-29.