Real-Time Shadow Using a Combination of Stencil and the Z-Buffer

Kolivand, Hoshang; Sunar, Mohd Shahrizal; Jusoh, Normal Mat; Olufemi, A Folorunso

doi:10.5121/ijma.2011.3303

Cited by 3 publications

(3 citation statements)

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“…Although shadows should be in the background compared to objects on the scene, they still carry information about the picture. Thus, a shadow can determine the positions and relationships between objects and light sources [1].…”

Section: Introductionmentioning

confidence: 99%

Applying the Real Time Shadowing Method for Creating Soft Shadows in Opengl

Avdić

Rančić

2018

FU Aut Cont Rob

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This paper presents a technique for rapidly generating and rendering of soft shadows on the scene. The method has the advantage of real-time creating of shadows which look more realistic than hard shadows and have high quality, also it has not high demands in resources. The main idea is to replace a complex light source with a collection of multiple point sources of light in order to decrease rendering time. The mathematic model, experiments, and comparison with similar techniques are given and described.

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Section: Introductionmentioning

confidence: 99%

Applying the Real Time Shadowing Method for Creating Soft Shadows in Opengl

Avdić

Rančić

2018

FU Aut Cont Rob

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“…This method is struggling when shadowing complex objects, and its implementation is greatly onerous [1,6,7].…”

Section: Related Workmentioning

confidence: 99%

“…Shadows enhance the 3D impression in order to make better immersive 3D feeling. Also, they depict relations between objects on a scene, so the distance between two virtual objects can be sensed more clearly [1].…”

Section: Introductionmentioning

confidence: 99%

Real-time shadows in OpenGL caused by the presence of multiple light sources

et al. 2017

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Preliminary communicationIn modern computer graphics, the emphasis is on the details of the scene, and taking into account the improvements in hardware performances, it is not allowed to make compromises when it comes to the reality of scenes. Each reflection, shadow, rounded corner and transparency must be brought to perfection and presented in order to make a depicted scene more realistic. In one of the most widely used API for rendering 3D objects, OpenGL, there is nothing similar to a library for adding those phenomena that exist in reality. If the possibility of existence of multiple light sources is considered, rendering all these details becomes a real challenge. The aim of this paper is to provide a method for generating shadows in an efficient way, for the objects commonly used as components of complex 3D objects, in conditions of the presence of moving light sources. Keywords Sjene u realnom vremenu u OpenGL-u uzrokovane prisutnošću više izvora svjetlostiPrethodno priopćenje U suvremenoj računalnoj grafici naglasak je na detaljima prizora, a uzimajući u obzir poboljšanja hardverskih svojstava, nije dopušteno raditi kompromise kada je riječ o stvarnosti scena. Svaki odraz, sjena, zaobljeni kut ili prozirnost mora biti doveden do savršenstva i prikazan u cilju da se scena koja se oslikava učini što realističnijom. U jednom od najšire rabljenih API-ja za renderiranje 3D objekata, OpenGL-u, ne postoji nešto poput knjižnice za dodavanje ovih pojava koje postoje u stvarnosti. Ako se razmatra mogućnost postojanja više izvora svjetlosti, renderiranje svih ovih detalja postaje pravi izazov. Cilj ovog rada je obezbjeđivanje metoda za generiranje sjene na efikasan način, za objekte često rabljene kao komponente složenih 3D objekata, u uvjetima prisutnosti više svjetlosnih izvora s mogućnošću kretanja.

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