A software implementation of Optix 7

Based on: Siggraph 2019/2020 OptiX 7/7.1 Course Tutorial Code

About this repository

This repository implements Optix in Software. It was written to learn the Optix API. It mainly consists of parts of an pathtracer I wrote (https://github.com/gonsolo/gonzales) as rendering engine and glue code implementing the Optix API. The API was implemented step by step, starting with example 01 and progressively extending it as can be seen in the history.

This repository was forked from the original course at https://gitlab.com/ingowald/optix7course.git.

Building the Code

"make" builds everything. Then go to an example and type "make run". I only tested it on Linux.

Dependencies

• a C++ compiler (gcc 10.2)
• a Swift compiler (swiftc 5.3.3).
• no Optix SDK, Cuda or Nvidia drivers are needed. ;)
• GLFW

Building under Linux

• Install required packages

  • on Ubuntu: sudo apt install libglfw3-dev

• Clone the code

    git clone https://github.com/gonsolo/optix7course
    cd optix7course

• build

    make

• run an example

    cd example01_helloOptix; make run

Examples Overview

Example 1: Hello World

This is simplest example and only needs a few lines to implement.

This is how it looks on my Linux machine:

Example 2: First Pipeline Setup and Raygen Program

Example 3: Rendering in a GLFW Window

Example 4: Creating a first Triangle Mesh and Accel Struct

Example 5: First Shader Binding Table (SBT) Data

Example 6: Multiple Triangle Meshes

Example 7: First Real Model

Example 8: Adding Textures via CUDA Texture Objects

Example 9: Adding a second ray type: Shadows

Example 10: Soft Shadows