Distance-aided Ray Marching

Rendering of implicit surfaces with GPU acceleration

Example scene

Features

• Anti-aliasing (super sampling x4)
• Sharp shadows
• Reflections
• Ambient Occlusion
• Fractal surfaces:
  • Menger sponge
  • 3D Sierpinski triangle
  • Mandelbulb
• Use of Constructive Solid Geometry
• Unique color for each primitive
• Smooth operations

Building

make

Running

make run

Rendered images in BMP format should appear in the output folder

Render times

Measurements are done with i5 10400f (OpenMP) and RTX 3080 (OpenGL):

No anti-aliasing:

CPU render - 1 thread:   42576.211 ms
CPU render - 12 threads:  5107.263 ms
GPU Render time:            13.889 ms
Copy + GPU render time:     14.385 ms
Copy time:                   0.496 ms

AA x4:

CPU render - 1 thread:   168946.344 ms
CPU render - 12 threads:  20155.684 ms
GPU Render time:             48.111 ms
Copy + GPU render time:      48.608 ms
Copy time:                    0.497 ms