Lancia Delta S4 Rendering in Unreal Engine
This is a project I poured my heart into, with skills in modeling, texturing, animating, programming, and, most importantly, look-developing. As a 3D artist and rally enthusiast, I take this project as a chance to bring the iconic Lancia Delta S4 into Unreal Engine. A legendary vehicle with insane horsepower, which marks the end of Group B with a tragic accident in Monte Carlo.
The project includes the appearance of the vehicle and details of the engine and the environment with a short rally track to represent the icy track in Monte Carlo with a cloudy and foggy atmosphere.
The environment is heavily inspired by the rally stages from Monte Carlo in Monaco with a combination of the winter in Finland, which are both the famous rally stages. The track is generated from an editable spline. As a layer of the landscape, the track can interact with landscape meshes and deform the terrain to match the spline.
The car engine part is posted in the link below:
https://www.artstation.com/artwork/39BbYE
3D Model Viewer
All the textures can be displayed by toggling them on and off in the setting.
The vehicle is set to undergo a heavy blizzard during a rally stage. With the snow and mud that mixed and cumulated on the surface, all the snow stains on the car are slightly darker than the regular snow.
Some art treatments, including having the opacity depth on the windshield, bring a smooth and subtle transition in blocking the interior components.
The car body, engine, engine bay, and other components have 353208 triangles, excluding the spline meshes.
Some art treatments, including having the opacity depth on the windshield, bring a smooth and subtle transition in blocking the interior components.
Additionally, the vehicle is covered with snow crystals everywhere to bring convincing details.
This is the most complicated part since those components must be modeled accurately and put together correctly. Most components are not angled straight, especially the engine, which has an angle that requires several mesh reworks to fit into place.
Car Clear Coat Material
Using the Fresnel mask improves the surface reflection to have more dynamics. The additional bump details are added to create the bumpy clearcoat surface, which matches the imperfect finishing in real life.
Specular Fix
The limitation of Unreal makes thin translucent material that won't work with Lumen in calculating accurate self-reflection. The solution is to mask the leaking reflection area by darkening the color and reducing the specular value.
Headlight Material
A mask that goes into refraction is used to have the refraction details withing the headlight lens.
Snow Material
Using the world normal and world position offset, the material can have a similar effect as it is cumulated on the surface.
This can be applied to other materials such as trees and rocks as a material function to achieve the same effect.
Track With Spline
The track is generated from an editable spline. As a layer of the landscape, the track can interact with landscape meshes and deform the terrain to match the spline.
Particle
Particles are done in the Niagara system with two types of particle effects: the heavy snow dust and the mix of light and vaporized snow due to the tire's heavy scratching.
Additional Component UV
Car Body UV
