Raytracing Acceleration Parameters Dialog

The controls on this dialog let you override the default acceleration values and specify your own requirements. Typically you don't need to use them, but if you are familiar with the requirements of your scene, they can help you optimize raytrace rendering for your specific needs and time constraints.

• Default menu: Rendering menu > Raytracer Settings (visible only when the Default Scanline renderer is active) > Render Setup dialog > Raytracer panel > Raytracer Global Parameters rollout > Global Raytrace Engine Options group > Acceleration Controls button
• Alt menu: Rendering menu > Render Setup > Render Setup dialog > Raytracer panel > Raytracer Global Parameters rollout > Global Raytrace Engine Options group > Acceleration Controls button
• Render Setup dialog > Raytracer panel (visible only when the Default Scanline renderer is active) > Raytracer Global Parameters rollout > Global Raytrace Engine Options group > Acceleration Controls button

Raytracing subdivides the scene, organizing it into a tree for raytrace purposes. A node in this tree is known as a "voxel." Voxel trees are dynamic, and you can't explicitly specify the structure of the tree. (If you set Max. Divisions to 2, the tree is an octree, which is possibly a more familiar data structure.)

Tip: If your scene is particularly unbalanced (for example, it has a giant planet object and a cluster of small spacecraft objects) keep the Balance setting low.

Interface

Face Limit

Sets the maximum number of faces allowed in a lattice voxel before it is subdivided. Default=10.

Balance

Determines the sensitivity of the subdivision algorithm. Increasing this value uses more memory but can increase performance. Default=4.0.

Max. Divisions

Sets the initial lattice dimension. For example, 4 is a 4 x 4 x 4 lattice. Default=30.

Max. Depth

Sets the maximum number of lattice subdivisions. Default=8.