Reflection map prefiltering improvements
Open
Nobody has claimed this yet.
scope/pbr
type/fix
- Dominant language
- JavaScript
- Stars
- 248
- Forks
- 18
- Avg merge
- 1m
- Merged PRs (30d)
- 1
Description
Current implementation suffers from two major issues:
a) due to lack of multiple scattering metals get darker and they get rougher - solved by bumping reflection color based on roughness
b) bright spots cause fireflies due to insufficient filtering - solved by sampling different mipmap levels
Both are described here https://bruop.github.io/ibl/
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the reflection-map prefiltering implementation and read the linked IBL explanation for the two reported problems. The work is done when rough metals no longer darken or become rougher and bright spots no longer produce fireflies through improved mipmap-level sampling.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100