RELEASE CANDIDATE: v0.1.5

[pranavbedi]

No description provided.

[connortbot]

New Features and Updates

• Revamped path tracing integrator with support for mediums
• Added support for boxes
• Pixel Lambertian material now includes transparency textures

Material Improvements

• Introduced mixture and colored isotropic mediums
• Added CSR support to edit sky gradient
• Replaced old dielectric, metal, and Lambertian models with improved versions:
  • Better Dielectrics (Cook-Torrance)
  • Better Metals (Cook-Torrance)
  • Better Diffuse (Oren-Nayar)
• Layered materials

Tentative Updates

• CSR support for direct light sampling (see bug in render.h)

Roadmap

1. Add CSR support for remaining unsupported features (e.g better materials)
2. Code Review
3. Test expected image outputs: Write and run all of our existing scenes with.csr files and ensure that every material, object, outputs as expected with no errors.
4. Test CLI
5. Benchmarks: Compile a large list of CSR scenes and mark render times, memory usage.
6. Finish PR
7. Create GitHub Release!

1. Feature Checklist

• CSR support & validation: Dielectric
• CSR support & validation: Metal
• CSR support & validation: Diffuse
• CSR support & validation: Instances
• CSR support & validation: Mixture
• CSR support & validation: Mediums/Volumes
• CSR support & validation: Pixel Lambertian
• CSR support & validation: Sky Gradient Control
• CSR support & validation: LayeredBSDF

3. Image Tests Checklist

Tests should cover everything possible with the renderer. This is the most rigorous part.

• All tests
• All existing materials with full ranges of properties with all existing objects
• Extremely LARGE scenes
• Extremely SMALL scenes
• Low->High depth of field
• Low->High FOV
• Computationally taxing scenes (Many objects, lights, textures, etc.)

6. Benchmarks

Using the --verbose flag, we can write a quick .sh that can run all the csr files and output to debug.txt. Make sure you add your specs to the file.

8. Create GitHub Release

We should also make some nice, pretty renders for the gallery :)

[connortbot]

results-connortbot.txt

[connortbot]

A list of specific tests to run:

• A grid of dielectric spheres showing 0-1.0 roughness and X-X etas (dielectric_grid.csr)
• A grid of metal spheres showing 0-1.0 roughness (rough_metals.csr)
• A row of layered examples -> Diffuse with Glass, Glass with Glass, Metal with Glass) (layered_row.csr)
• A row of mixture examples -> Diffuse+Dielectric, Dielectric+Dielectric, Glass+Metal, etc. (mixture_row.csr)
• A row of dielectric with eta 1.36 (alcohol) with sheens 0, 4, 3 2 (sheen_row.csr)

3 mega portfolio images:

• a mafia man sitting at his desk with a window behind him shining light
• Suggestions pls :p
  Test with different DOF and FOV.

[connortbot]

Before entering stable I think that the SIMD stuff should be temporarily disabled/removed for user access because it just doesn't work and README.md needs to be updated - but this is ready for test

[connortbot]

LGTM (i wrote it :p)