Choose how textures are applied to Particle Trails.
| Stretch | Map the texture once along the entire length of the trail. |
| Tile | Repeat the texture along the trail. To set the tiling rate, use Material.SetTextureScale. |
| DistributePerSegment | Map the texture once along the entire length of the trail, assuming all vertices are evenly spaced. |
| RepeatPerSegment | Repeat the texture along the trail, repeating at a rate of once per trail segment. To adjust the tiling rate, use Material.SetTextureScale. |