For this project, I learned about CUDA and implemented a simple GPU raytracer. The basic features include diffuse and phong shading of cubes and spheres with raytraced shadows from a single point light. I also added these additional features:
- Soft shadows and area lights
- Depth of field
- Supersampled anti-aliasing
- Movable camera
Please use the new scene files provided in the repository. phongMatScene.txt is
the scene I used to render the images below.
The scenes are still read through the command line. I added focal length and
aperture as new camera features that can be read in through the scene files,
so the old scene files would not work.
The camera controls are:
- 'a' and 'd' keys to translate along the x axis
- 'w' and 's' keys to translate along the y axis
- 'j' and 'k' keys to translate along the z axis
Screen shot
Depth of Field
No DOF
Two lights with depth of Field
Video link:
Link to pdf
https://github.com/zxyzhu/Project1-RayTracer/blob/master/renders/PerformanceAnalysis.pdf
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None, but here are the resources I used for box intersection and sampling random points on spheres:
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Box intersection: http://www.siggraph.org/education/materials/HyperGraph/raytrace/rtinter3.htm
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Sphere random point generation: http://mathworld.wolfram.com/SpherePointPicking.html
I am currently working on reflective surfaces. After that I plan to make refraction and create better camera controls.