Trivial Rendeder

Project Goals

Develop an application that implements computer graphics lighting algorithms and rasterization of files in Waveform format

Libraries/Languages

• C++
• QMake
• Gengetopt (parsing input-user command line)
• Boost (string manipulation like split)
• FFmpeg (merge the frames into a video)

Explanation (Spanish)

• https://tinyurl.com/y59kshsp

Videos

• Z-buffer: https://youtu.be/acT-4PxC0HY
• Bézier: https://youtu.be/KjO8wf7cfM8
• Wireframe: https://youtu.be/aHUB8vPaUEM
• Phong: https://youtu.be/S2gSLifHl_A
• Gourand: https://youtu.be/Ld6avcBQARA
• Flat Shading: https://youtu.be/B_mSwNqAs5g

Status

• Rasterization
• Z-buffer
• Flat Shading
• Phong Shading
• Gouraud Shading
• Bézier curves

Build Setup

# make the project platform-specific
$ qmake trivial_renderer.pro

# compile and generate the executable
$ make

# print help
$ ./trivial_renderer --help

# run examples (generate frames for 3 minutes at 23.976 fps)
# Wireframe:
$ ./trivial_renderer -i Charizard.obj  --resolution 1920,1080 --angleOfView 90 --bezier-curve 0,0,960,750,100,1,1920,1080 --near 0.5 --far 20  --camera 0,0,-50 --wireframe --time 3
# face hiding:
$ ./trivial_renderer -i Charizard.obj  --resolution 1920,1080 --angleOfView 90 --bezier-curve 0,0,960,750,100,1,1920,1080 --near 0.5 --far 20  --camera 0,0,-50 --faceHiding --time 3
# flat shading:
$ ./trivial_renderer -i Charizard.obj  --resolution 1920,1080 --angleOfView 90 --bezier-curve 0,0,960,750,100,1,1920,1080 --near 0.5 --far 20  --camera 0,0,-50 --flatShading 40,40,40 --time 3
# zbuffer + barycentric coordinates:
$ ./trivial_renderer -i Charizard.obj  --resolution 1920,1080 --angleOfView 90 --bezier-curve 0,0,960,750,100,1,1920,1080 --near 0.5 --far 20  --camera 0,0,-50 --zBuffer --time 3
# gourand:
$ ./trivial_renderer -i Charizard.obj  --resolution 1920,1080 --angleOfView 90 --bezier-curve 0,0,960,750,100,1,1920,1080 --near 0.5 --far 20  --camera 0,0,-50 --gourand 40,40,40 --time 3
# phong:
$ ./trivial_renderer -i Charizard.obj  --resolution 1920,1080 --angleOfView 90 --bezier-curve 0,0,960,750,100,1,1920,1080 --near 0.4 --far 20  --camera 0,0,-50 --phong 40,40,40,0.1,0.5,0.4,2 --time 3
# Generate video from frames
$ ffmpeg -framerate 24000/1001 -i %06d.png -c:v libx264 -pix_fmt yuv420p out.mp4