Specular Effects on the GPU: State of the Art

Szirmay‐Kalos, László; Umenhoffer, Tamás; Patow, Gustavo; Szécsi, László; Sbert, Mateu

doi:10.1111/j.1467-8659.2009.01350.x

Cited by 9 publications

(8 citation statements)

References 122 publications

(171 reference statements)

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“…Again, we refer to an excellent survey [HLHS03] and a recent book [ESAW11]. Worth mentioning in this context are also a survey on ambient occlusion (AO) [MFS08] (which can be considered as an approximation to GI), a survey of specular effects on the GPU [SKUP*09] and courses both on ‘Global Illumination Across Industries’ [KFC*10] and scattering in participating media [GWWD09]. A book about GI in general is ‘Advanced Global Illumination’ by Dutré and colleagues [DBBS06] as well as PBRT by Pharr and Humphreys [PH04].…”

Section: Introductionmentioning

confidence: 99%

The State of the Art in Interactive Global Illumination

Ritschel

Dachsbacher

Grosch³

et al. 2012

Computer Graphics Forum

133

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The interaction of light and matter in the world surrounding us is of striking complexity and beauty. Since the very beginning of computer graphics, adequate modelling of these processes and efficient computation is an intensively studied research topic and still not a solved problem. The inherent complexity stems from the underlying physical processes as well as the global nature of the interactions that let light travel within a scene. This paper reviews the state of the art in interactive global illumination (GI) computation, i.e., methods that generate an image of a virtual scene in less than 1 s with an as exact as possible, or plausible, solution to the light transport. Additionally, the theoretical background and attempts to classify the broad field of methods are described. The strengths and weaknesses of different approaches, when applied to the different visual phenomena, arising from light interaction are compared and discussed. Finally, the paper concludes by highlighting design patterns for interactive GI and a list of open problems.

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Section: Introductionmentioning

confidence: 99%

The State of the Art in Interactive Global Illumination

Ritschel

Dachsbacher

Grosch³

et al. 2012

Computer Graphics Forum

133

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“…There have been also various techniques based on microfacet model for representing the anisotropic reflectance surfaces . In our observation, however, the normal perturbation on anisotropic reflectance surface usually introduces unrealistic reflection artifacts.…”

Section: Related Workmentioning

confidence: 91%

Photorealistic cloth in real‐time applications

Kang

Cho

2012

Computer Animation & Virtual

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In this paper, we propose an efficient and stable animation and rendering method for complex mass-spring-based cloth model for interactive applications. Although the mass-spring model can be easily constructed and simulated, it is well known that the model suffers from the instability problem. The method proposed in this paper employs the harmonic oscillation model and analytically integrates the force for better stability and accuracy while keeping the integration scheme still explicit. As the integration scheme is explicit, the method can be easily parallelized, and the performance improvement can be easily obtained by exploiting the parallelism in the graphics processing unit. For the realistic representation of virtual clothes, we also proposed an efficient and effective rendering method for woven surfaces on the basis of alternating anisotropic reflectance and microfacet distribution function rotation.

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“…Secondary lights are positioned by sampling a deep shadow map and their contributions approximated in a shader. Focusing specifically on specular interactions and caustics, a number of approximate real‐time GPU algorithms have been developed [SKUP*09].…”

Section: Related Workmentioning

confidence: 99%

“…Its high computational cost initially made photon mapping strictly an offline rendering technique. By concentrating on specular reflections and the resulting caustics, several authors have since achieved real‐time performance, making approximations to the exact algorithm and using a cluster of computers [GWS04] or a GPU [SKUP*09, ZHWG08] for the required computational performance.…”

Section: Introductionmentioning

confidence: 99%

Interactive Global Photon Mapping

Fabianowski¹,

Dingliana²

2009

Computer Graphics Forum

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We present a photon mapping technique capable of computing high quality global illumination at interactive frame rates. By extending the concept of photon differentials to efficiently handle diffuse reflections, we generate footprints at all photon hit points. These enable illumination reconstruction by density estimation with variable kernel bandwidths without having to locate the k nearest photon hits first. Adapting an efficient BVH construction process for ray tracing acceleration, we build photon maps that enable the fast retrieval of all hits relevant to a shading point. We present a heuristic that automatically tunes the BVH build's termination criterion to the scene and illumination conditions. As all stages of the algorithm are highly parallelizable, we demonstrate an implementation using NVidia's CUDA manycore architecture running at interactive rates on a single GPU. Both light source and camera may be freely moved with global illumination fully recalculated in each frame.

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Specular Effects on the GPU: State of the Art

Cited by 9 publications

References 122 publications

The State of the Art in Interactive Global Illumination

The State of the Art in Interactive Global Illumination

Photorealistic cloth in real‐time applications

Interactive Global Photon Mapping

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