Valo

C++11/OpenMP/CUDA physically based renderer with an interactive preview mode.

• Author: Mikko Ronkainen
• Website: github.com/mikoro/valo

Image gallery / Youtube video

Download

Download the latest version:

For windows, you will also need the Visual C++ Redistributable for Visual Studio 2015.

The CUDA version runs on NVIDIA GTX 900 Series or newer.

Features

• Physically based renderer
  • Uses path tracing to solve the rendering equation
  • Materials with BRDFs and PDFs (only Lambertian at the moment)
  • (Multiple) importance sampling
  • Russian roulette
  • Direct light sampling
• Volumetric effects with ray marching
• Film for accumulating samples
• Antialiasing with different filters
• Tonemapping with different operators
• Image based and procedural textures
• BVHs with different widths (2/4/8), optimal and fast SAH builder and vectorized traversal
• Random numbers based on PCG
• Very fast OBJ file loader with material support
• GPU rendering with CUDA (based on megakernel approach, not so fast)
• Offline console rendering and interactive windowed mode

Instructions

Running the program will open the first test scene in an interactive windowed mode. Use WASD to move and left mouse button to look around. Cycle through the test scenes with number keys.

Edit the valo.ini file to further configure the program. All options can be overridden with command line switches.

Controls

For the interactive mode:

Test scene data sources

Websites where the test scene data was sourced from:

• Blend Swap (user Jay-Artist)
• McGuire Graphics Data

Build

See the build instructions.

License

Valo
Copyright © 2016 Mikko Ronkainen

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.