mypt

• Simple path tracer implemented by C++/OpenMP.
• For future work, I'd like to implement several techniques for efficient rendering, such as, next event estimation, multiple importance sampling. I also plan to implement several rendering and/or sampling strategies (i.e., MLT, BDPT, Sobol, Uniform sampling).
• If I finished basic learning of path tracing, I'd like to implement GPU path tracing techniques using OptiX or CUDA.
• Currently, this doesn't support spectrum rendering, so all color management is performed by RGB representation.

Compile & Run (Linux)

• Compile

cd MyPT
mkdir build 
cd build
cmake ..
make

• Run

cd path/to/MyPT
build/mypt scene.txt

• How to render

# Example scene (simple ground plane with checker texture and glass sphere)

filename result/simple.png
# Image resolution
width 768
height 768
# The number of samples per pixel
spp 64
# The number of maximum depth to track rays
depth 5
# Background color
background 0.7 0.8 0.9

# Camera settings
beginCamera
origin 10 10 -70
lookat 0 0 0 
up 0 1 0
focus_length 15.0
aperture 0
endCamera

# Ground plane
beginPrimitive 
shape plane min -100 -100 max 100 100
translate 0 -10 0
material lambertian checker color1 0.3 0.3 0.3 color2 0.9 0.9 0.9 scale 100
endPrimitive

# Sphere
beginPrimitive
shape sphere radius 3
translate 0 1 0
material dielectric color 1 1 1 ior 1.5
endPrimitive

beginLight
shape plane min -2.5 -2.5 max 2.5 2.5
translate 0 8 0
color 1 1 1
intensity 30
endLight