TDT4230 Project: GPGPU raytracing
This is a fork of GPUPE with the aim of implementing raytracing on opengl compute shaders using Raytracing in one weekend.
How to build
Download rustup. Code is tested with rustc version 1.51
When that is done you should be able to run cargo run from the project folders
Keybindings
- wasd - move camera
- mouse movement - turn camera
- ctr - move down
- space - move up
- left mouse - spawn voxel
- right mouse - remove voxel
- 1 -> 9 - change voxel spawn type
Sources
Raytracing concepts: https://raytracing.github.io/books/RayTracingInOneWeekend.html Cube intersection test: http://jcgt.org/published/0007/03/04/
Storing an octree in a texture: https://developer.nvidia.com/gpugems/gpugems2/part-v-image-oriented-computing/chapter-37-octree-textures-gpu?fbclid=IwAR1iQ3i-t28gnm_XwP-MViIY11C4V9jjKniQonVQAbXym3BXcZ2muIofjWQ
Using glutin (most of main is taken from this): https://github.com/mgimle/gloom-rs
Thanks Nercury for a great blog about opengl in rust! http://nercury.github.io/rust/opengl/tutorial/2018/02/08/opengl-in-rust-from-scratch-00-setup.html
Using gl and sdl bindings for rust: https://github.com/Nercury/rust-and-opengl-lessons
Opengl textures: https://learnopengl.com/Getting-started/Textures
Using opengl compute shaders: https://antongerdelan.net/opengl/compute.html
Reading vbo in compute shader: https://stackoverflow.com/a/21344861/11768869
Generating blue noise: https://blog.demofox.org/2017/10/20/generating-blue-noise-sample-points-with-mitchells-best-candidate-algorithm/
Distributed hemosphere unit vector: http://jcgt.org/published/0007/04/01/
Frisvad orthogonal vectors: https://backend.orbit.dtu.dk/ws/portalfiles/portal/126824972/onb_frisvad_jgt2012_v2.pdf