Real-time global illumination using precomputed light field probes

@article{McGuire2017RealtimeGI,
  title={Real-time global illumination using precomputed light field probes},
  author={Morgan McGuire and Michael Mara and Derek Nowrouzezahrai and David P. Luebke},
  journal={Proceedings of the 21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games},
  year={2017}
}
  • M. McGuire, Michael Mara, D. Luebke
  • Published 25 February 2017
  • Computer Science
  • Proceedings of the 21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games
We introduce a new data structure and algorithms that employ it to compute real-time global illumination from static environments. [] Key Method We apply ideas from screen-space and voxel cone tracing techniques to this data structure to efficiently sample radiance on world space rays, with correct visibility information, directly within pixel and compute shaders.
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References

SHOWING 1-10 OF 41 REFERENCES
Precomputed illuminance composition for real-time global illumination
TLDR
A new real-time approach for indirect global illumination under dynamic lighting conditions using surfels to gather a sampling of the local illumination and propagate the light through the scene using a hierarchy and a set of precomputed light transport paths.
Interactive indirect illumination using voxel cone tracing: a preview
TLDR
A novel real-time solution that calculates two light bounces - either glossy or diffuse - using a hierarchical voxel representation generated from a regular scene Mesh by combining the direct illumination and the indirect illumination received from the rest of the scene.
Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments
TLDR
A new, real-time method for rendering diffuse and glossy objects in low-frequency lighting environments that captures soft shadows, interreflections, and caustics and introduces functions for radiance transfer from a dynamic lighting environment through a preprocessed object to neighboring points in space.
Imperfect shadow maps for efficient computation of indirect illumination
TLDR
It is demonstrated that imperfect shadow maps are a valid approximation to visibility, which makes the simulation of global illumination an order of magnitude faster than using accurate visibility.
Approximating dynamic global illumination in image space
TLDR
The proposed generalization of screen-space occlusion methods has only a small overhead compared to classic SSAO, approximates direct and one-bounce light transport in screen space, can be combined with other methods that simulate transport for macro structures and is visually equivalent to SSAE in the worst case without introducing new artifacts.
Light field rendering
TLDR
This paper describes a sampled representation for light fields that allows for both efficient creation and display of inward and outward looking views, and describes a compression system that is able to compress the light fields generated by more than a factor of 100:1 with very little loss of fidelity.
Accurate analytic approximations for real-time specular area lighting
TLDR
This work proposes a low cost edge splitting strategy that accounts for the spherical warp introduced by the half vector parametrization that achieves real-time performances without any assumption on area light shape nor surface roughness, with a quality close to the ground truth.
Variance shadow maps
TLDR
This paper introduces variance shadow maps, a new real time shadowing algorithm that stores the mean and mean squared of a distribution of depths, from which it can efficiently compute the variance over any filter region.
Efficient GPU Screen-Space Ray Tracing
TLDR
This paper provides for the first time full implementation details of a method that has been proven in production of recent major game titles by adapting the perspective-correct DDA line rasterization algorithm to support multiple depth layers for robustness.
Local image-based lighting with parallax-corrected cubemaps
TLDR
This work introduces a new approach which avoids lighting seams and parallax issues while still preserving extremely high performance on current console generation hardware (PS3/XBOX360).
...
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