zx1239856 / computer-graphics-2019

THU Computer Graphics 2019

Photo Realistic Rendering - 2019 Computer Graphics

Basic Functions

• Multiple parametric objects supported, i.e. plane, sphere, cube and rotary bezier curve
• Mesh object (loaded via OBJ file)
• Stackless KD-tree accelaration
• Axis aligned boundingbox
• Nvidia CUDA support (much faster than CPU implementation using OpenMP)
• Surface texture mapping
• Natural depth of field
• ...

Supported Render Algorithms

• Path Tracing with Anti-aliasing (CPU and GPU)
• Stochastic Progressive Photon Mapping (CPU only)

Dependencies

• OpenCV (for reading texture image, i.e., jpeg or png)
• CUDA (if you want to compile GPU version)

Build and Execution

mkdir build && cd build 
cmake ../src -DCMAKE_BUILD_TYPE=release -DBUILD_CUDA=true|false -DBUILD_TEST=true|false ## Enable CUDA or test building according to your need 
make

To render, use the following command

./main PT [out_filename] [width] [height] [num_spp]
./main SPPM [out_filename] [width] [height] [num_rounds] [num_photons_per_round]
./main_gpu [out_filename] [width] [height] [num_spp]

Demo image

Simple Ray Cast

Rotary Bezier Curve Demo

PT and SPPM Demo

PT

SPPM

Final GPU Demo

For more details, refer to the demo directory.

References

1. Hachisuka, Toshiya, Shinji Ogaki, and Henrik Wann Jensen. "Progressive photon mapping." In ACM Transactions on Graphics (TOG), vol. 27, no. 5, p. 130. ACM, 2008.
2. Hachisuka, Toshiya, and Henrik Wann Jensen. "Stochastic progressive photon mapping." In ACM Transactions on Graphics (TOG), vol. 28, no. 5, p. 141. ACM, 2009.
3. Popov, Stefan, Johannes Günther, Hans‐Peter Seidel, and Philipp Slusallek. "Stackless kd‐tree traversal for high performance GPU ray tracing." In Computer Graphics Forum, vol. 26, no. 3, pp. 415-424. Oxford, UK: Blackwell Publishing Ltd, 2007.

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