Real-time rendering systems in 2010

Mark, William R.; Fussell, Donald S.

doi:10.1145/1198555.1198758

Cited by 7 publications

(4 citation statements)

References 48 publications

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“…The first, embodied in the OpenRT interface [WBS02], argues that the interface between the rendering engine and application should be as similar as possible to the immediate mode APIs used in Z buffer systems such as OpenGL (and thus, ease the transition to ray tracing). The second, originally advocated by Mark and Fussell [MF05] and implemented in Razor [DHW*07] argues that it is necessary to thoroughly reconsider this interface for ray tracing systems and adopt an approach that more tightly couples the application's scene graph data structure to the ray tracing rendering engine.…”

Section: Overarching Tradeoffs For a Dynamic Ray Tracermentioning

confidence: 99%

State of the Art in Ray Tracing Animated Scenes

Wald

Mark

Günther

et al. 2009

Computer Graphics Forum

Self Cite

134

100

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Ray tracing has long been a method of choice for off-line rendering, but traditionally was too slow for interactive use. With faster hardware and algorithmic improvements this has recently changed, and real-time ray tracing is finally within reach. However, real-time capability also opens up new problems that do not exist in an off-line environment. In particular real-time ray tracing offers the opportunity to interactively ray trace moving/animated scene content. This presents a challenge to the data structures that have been developed for ray tracing over the past few decades. Spatial data structures crucial for fast ray tracing must be rebuilt or updated as the scene changes, and this can become a bottleneck for the speed of ray tracing. This bottleneck has recently received much attention by researchers and that has resulted in a multitude of different algorithms, data structures and strategies for handling animated scenes. The effectiveness of techniques for ray tracing dynamic scenes vary dramatically depending on details such as scene complexity, model structure, type of motion and the coherency of the rays. Consequently, there is so far no approach that is best in all cases, and determining the best technique for a particular problem can be a challenge. In this State of the Art Report (STAR), we aim to survey the different approaches to ray tracing animated scenes, discussing their strengths and weaknesses, and their relationship to other approaches. The overall goal is to help the reader choose the best approach depending on the situation, and to expose promising areas where there is potential for algorithmic improvements.

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Section: Overarching Tradeoffs For a Dynamic Ray Tracermentioning

confidence: 99%

State of the Art in Ray Tracing Animated Scenes

Wald

Mark

Günther

et al. 2009

Computer Graphics Forum

Self Cite

134

100

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show abstract

“…To accelerate rendering time, a variety of rendering methods [5] [6] [7] use accelerated data structures and parallelism offered by hardware. In the past, data structures and hardware have been developed separately; however in the near future it is expected that graphics hardware will migrate from z-buffer rendering towards directly incorporating scene data structures for ray tracing [8].…”

Section: Previous Workmentioning

confidence: 99%

A hardware pipeline for accelerating ray traversal algorithms on streaming processors

Steffen

Zambreno

2010

2010 IEEE 8th Symposium on Application Specific Processors (SASP)

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Ray Tracing is a graphics rendering method that uses rays to trace the path of light in a computer model. To accelerate the processing of rays, scenes are typically compiled into smaller spatial boxes using a tree structure and rays then traverse the tree structure to determine relevant spatial boxes. This allows computations involving rays and scene objects to be limited to only objects close to the ray and does not require processing all elements in the computer model. We present a ray traversal pipeline designed to accelerate ray tracing traversal algorithms using a combination of currently used programmable graphics processors and a new fixed hardware pipeline. Our fixed hardware pipeline performs an initial traversal operation that quickly identifies a smaller sized, fixed granularity spatial bounding box from the original scene. This spatial box can then be traversed further to identify subsequently smaller spatial bounding boxes using any user-defined acceleration algorithm. We show that our pipeline allows for an expected level of user programmability, including development of custom data structures, and can support a wide range of processor architectures. The performance of our pipeline is evaluated for ray traversal and intersection stages using a kd-tree ray tracing algorithm and a custom simulator modeling a generic streaming processor architecture. Experimental results show that our pipeline reduces the number of executed instructions on a graphics processor for the traversal operation by 2.15X for visible rays. The memory bandwidth required for traversal is also reduced by a factor of 1.3X for visible rays.

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“…More details about many of the ideas discussed in this article can be found in another article I wrote with Don Fussell in 2005. 4 The tendency of graphics hardware to become increasingly general until the temptation emerges to incorporate new specialized units has existed for a long time and was described in 1968 as the "wheel of reincarnation" by Myer and Sutherland. 5 The fundamental need for programmability in realtime graphics hardware, however, is much more important now than it was then.…”

Section: The Future Of Graphics Architecturesmentioning

confidence: 99%

Future Graphics Architectures

Mark

2008

Queue

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Graphics architectures are in the midst of a major transition. In the past, these were specialized architectures designed to support a single rendering algorithm: the standard Z buffer. Realtime 3D graphics has now advanced to the point where the Z-buffer algorithm has serious shortcomings for generating the next generation of higher-quality visual effects demanded by games and other interactive 3D applications. There is also a desire to use the high computational capability of graphics architectures to support collision detection, approximate physics simulations, scene management, and simple artificial intelligence. In response to these forces, graphics architectures are evolving toward a general-purpose parallel-programming model that will support a variety of image-synthesis algorithms, as well as nongraphics tasks.

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Real-time rendering systems in 2010

Cited by 7 publications

References 48 publications

State of the Art in Ray Tracing Animated Scenes

State of the Art in Ray Tracing Animated Scenes

A hardware pipeline for accelerating ray traversal algorithms on streaming processors

Future Graphics Architectures

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