Next Gen car – part 2

“Next Gen car – part 2” by Valentin Nadolu


If the high-res geometry had intersections, it is preferable that the ingame version has none. Partially occluded polygons will most likely lead to artifacts in the game’s engine. Topology has to be redone in certain areas, and fully occluded faces can be deleted to avoid rendering artifacts.

Now comes the polygon reduction part. In the following images are basic descriptions of the most common polygon reduction methods and some areas where they can be applied.1. Select Edge Ring and Collapse

2. Select Edge Loop and Delete Edge
The borders of the low-res model are very important. They have to match the high-res geometry very closely so that baking the textures will not result in “blank spots” on the normal maps because of improper overlap. The white wireframe object in the next image is the high-res model without smooth. The green wireframe object is the low-res. As you can see, the two shapes might not be identical, but the borders are very close to each other.

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