A Ray Tracer made by Isard Botha for fun.
- Images
- | Primitives | 4 |
- | Primitives | 9 |
- | Primitives | 9 |
- | Primitives | 2161 |
- Initial Path-Tracing Algorithm
- Material
- BVH
- Resources
| Name | Value |
|---|---|
| Resolution | 1080x607 |
| Render Time | 30 mins |
| SPP | 256 |
| Primitives | 4 |
| Name | Value |
|---|---|
| Resolution | 1920x1080 |
| Render Time | 30 mins |
| SPP | 256 |
| Primitives | 9 |
| Name | Value |
|---|---|
| Resolution | 512x288 |
| Render Time | 4 mins |
| SPP | 512 |
| Primitives | 9 |
| Name | Value |
|---|---|
| Resolution | 1080x607 |
| Render Time | 10 mins |
| SPP | 512 |
| Primitives | 2161 |
The starting algorithm here leans heavily on monte-carlo integration. In essense we cast a large amount of rays which all scatter based on probabilities defined by the material. As more samples are taken we converge on the true look of the image.
The image rendered this way only converges quickly if there is a high chance of hitting the light source (The sky in this case). If there is a smaller light source the image remains very noisy.
This ray-tracer utilizes a universal material that considers the following properties.
Colours
- diffuse
- emission
- specular
- reflective
- ambient
- transparent
Scalars
- shininess
- shininess_strength
- shininess_tint
- reflectivity
- refraction_index
- transmission
The material amounts to a scatter function which takes an incoming ray, and information about the collision. It returns an attenuation (how the incoming light is absorbed) and a scattered ray.
The first major optimisation was Bounding Volume Heirarchy. I collect all objects into a bounding volume and build a tree of sub-volumes based by recursively splitting the objects in half along a random axis. This alows me to only collide with the objects I need to.