Naslov
Stencil Shadow Volumes for Complex and Deformable Objects

Autori
Kolić, Ivica ; Mihajlović, Željka ; Budin, Leo

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 11th IEEE International Conference on Electronics, Circuits and Systems / Yadid-Pecht, Orly - Tel Aviv : Garard Enterprises, 2004, 314-317

Skup
The 11th IEEE International Conference on Electronics, Circuits and Systems

Mjesto i datum
Tel Aviv, Izrael, 13.12.2004. - 15.12.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
shadow volumes; stencil testing; vertex blending

Sažetak
We present real-time shadow method based on the shadow volume that exploit capabilities of the modern graphics cards. Algorithm is primarily created for casting shadows of a highly concave complex objects such as trees. For those objects silhouette calculation that is usually preformed by other shadow volume algorithms is complicated and poorly justified. Instead of calculations, it is better to assume a worst case scenario and use all of the edges for construction of the shadow volume mesh, skipping silhouette determination entirely. The achieved benefit is that all procedure, the object and shadow calculation and rendering, could be done on GPU. Proposed solution for shadow casting allows open edges. Indexed vertex blending is used for shadow projections, and the only calculation required is determining projection matrices. Once created, shadow volume is treated like any other mesh.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo

POVEZANOST RADA