lumen

global illumination renderer

screenshots

setup

1. Clone the repo: git clone https://github.com/jlukacs/lumen.git
2. Update the submodules: git submodule update --init
3. Build the project using an environment in the build directory.

usage

Lumen is executed on the command line: lumen <SCENE_FILE>. Scenes are created in files and provided to the renderer. See SCENE.md for an explanation of all the scene commands. An example scene file is shown below:

Display "../../../demo.bmp"
Resolution 640 480
PixelSamples 16 16

DepthOfField 1 0.05 0.7

Rotate 27 1 0 0
Translate 0 0.5 -0.7
Projection 45

WorldBegin
    Light "directional"

    ObjectBegin
        Material "matte" "diffusecolor" [0.3 0.6 0.6]

        Scale 0.2 0.2 0.2
        Rotate -10 0 1 0

        Geometry "mesh" "meshname" "../../../dragon.xmesh"
    ObjectEnd

    ObjectBegin
        Scale 10 10 10

        Material "matte"
        Geometry "rectangle"
    ObjectEnd
WorldEnd

project structure

• build
  • Files for compiling the project with different build environments
• lib
  • Statically linked libraries
• src
  • acceleration
    • Objects for accelerating the ray intersection tests
  • bxdf
    • Material BRDFs and BTDFs
  • camera
    • Objects for generating camera rays
  • geometry
    • Scene objects for renderable geometry
  • image
    • Class for presenting the image and saving it to a file
  • light
    • Scene objects for light sources
  • renderer
    • Rendering algorithms
  • sampler
    • Objects for generating random samples
  • scene
    • Scene description API and scene file parsing
  • texture
    • Texture file loading and texture samplers