#SLR:
IBL image: sIBL Archive
SLRはモンテカルロレイトレーシングに基づいたレンダラーです。
SLR is a renderer based on Monte Carlo ray tracing.
SLRは次の要素から構成されています。
SLR consists of the following components.
- libSLR - レンダリングコア / rendering core
- libSLRSceneGraph - シーン管理・読み込み機能 / scene managing & loading
- HostProgram
##特徴 / Features
- Full Spectral Rendering (Monte Carlo Spectral Sampling)
(For RGB resources, RGB->Spectrum conversion is performed using Meng-Simon's method [Meng2015].) - RGB Rendering
- Various BSDF Types
- Ideal Diffuse (Lambert) BRDF
- Ideal Specular BRDF and BSDF
- Oren-Nayer BRDF [Oren1994]
- Improved Ward-Dür BRDF [Moroder2010]
- Ashikhmin-Shirley BRDF [Ashikhmin2000]
- GGX Microfacet BRDF and BSDF [Walter2007] with visible normal sampling [Heitz2014]
- Mixed BSDF
Layered BSDF(TODO)
- Procedural Textures
- Checkerboard (color & normal & float)
- Cell Noise [Worley1996] like Voronoi diagram (color & normal & float)
- Bump Mapping (Normal Map)
- Correct handling of non-symmetric scattering due to shading normals [Veach1996, 1997]
Volume Rendering(TODO)- Image Based Environmental Light
- Camera
- Perspective Camera with Depth of Field (thin-lens model)
- Environment Camera
- Motion Blur
- Camera Motion Blur
- Object Motion Blur
Deformation Blur(TODO)
- Geometry Instancing
- Acceleration Structure
- Binned SAH BVH
- Split BVH [Stich2009]
- QBVH [Dammertz2008] constructed by collapsing SBVH
- Light Transport Algorithms
- Unidirectional Path Tracing [Kajiya1986] with MIS
- Bidirectional Path Tracing [Veach1994, 1997]
Adaptive MCMC Progressive Photon Mapping[Hachisuka2011]
(has been dropped from current SLR implementation.)
- SLR Custom Language (C/Python-like syntax) for flexible scene description
##動作環境 / Confirmed Environment
現状以下の環境で動作を確認しています。
I've confirmed that the program runs correctly on the following environment.
- OS X 10.11
- Windows 8.1 (character-encoding conversion required)
- MacBook Pro Retina Late 2013
動作させるにあたっては以下のライブラリが必要です。
It requires the following libraries.
- OpenEXR 2.2
- libpng 1.6
- assimp 3.2
##注意 / Note モデルデータやテクスチャーを読み込むシーンファイルがありますが、それらアセットはリポジトリには含まれていません。
There are some scene files loading a model data and textures, but those assets are NOT included in this repository.
##参考文献 / References
[Ashikhmin2000] "An Anisotropic Phong BRDF Model"
[Dammertz2008] "Shallow Bounding Volume Hierarchies for Fast SIMD Ray Tracing of Incoherent Rays"
[Hachisuka2011] "Robust Adaptive Photon Tracing Using Photon Path Visibility"
[Heitz2014] "Importance Sampling Microfacet-Based BSDFs using the Distribution of Visible Normals"
[Kajiya1986] "THE RENDERING EQUATION"
[Meng2015] "Physically Meaningful Rendering using Tristimulus Colours"
[Moroder2010] "A New Ward BRDF Model with Bounded Albedo"
[Oren1994] "Generalization of Lambert’s Reflectance Model"
[Stich2009] "Spatial Splits in Bounding Volume Hierarchies"
[Veach1994] "Bidirectional Estimators for Light Transport"
[Veach1996] "Non-symmetric Scattering in Light Transport Algorithms"
[Veach1997] "ROBUST MONTE CARLO METHODS FOR LIGHT TRANSPORT SIMULATION"
[Walter2007] "Microfacet Models for Refraction through Rough Surfaces"
[Worley1996] "A Cellular Texture Basis Function"
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