AO bakery for Assetto Corsa

This is a CUDA-accelerated ambient occlusion bakery for racing simulator Assetto Corsa with Custom Shaders Patch, supporting tracks and cars. Made possible with NVIDIA OptiX, forked from this project.

Features

• Tracks:

  • Both KN5 and INI files are supported as inputs;
  • Special trees baking (without self-occlusion, with normals facing up);
  • Special grass baking (without any shadows from grass, with normals facing up);
  • Optional trees transparency factor;
  • Skips dynamic objects to shadow them dynamically later on;
  • Baking of extra samples along the track for occlusion for dynamic objects;
  • Rebaking of overly darken areas with increased number of rays per triangle.

• Cars:

  • Full LODs support, as well as COCKPIT_HR/COCKPIT_LR;
  • Special processing for seatbelts;
  • Special processing for rotating objects to keep shadows uniform;
  • AO splitting for doors, steering wheel and other animations, allowing to transition between AO values realtime (demo);
  • Baking shadows for driver;
  • Baking shadows from driver in an alternative AO set;
  • Raising ambient brightness to compensate for new AO;
  • Extra pass for adding a bit of light “bounced” from the ground;

• Takes into account light bounces to keep AO brighter;

• Alter brightness, opacity and gamma for resulting AO;

• Adjust AO per-object if necessary;

• Adjust sampling offsets per-object to get rid of arifacts in complicated cases.

Tips

• Various options could be changed in baked_shadow_params.ini;
• NVIDIA GPU is required;
• Works much faster on RTX GPUs, but can also use older NVIDIA GPUs with CUDA, although works a lot slower with those (disable light bounces to improve the speed).

Credits

• Project based on Optix Prime baking;
• Powered by NVIDIA Optix.