The lower one exhibits a highly detailed normal map, which provides additional detail, giving the illusion that the surface contains many more polygons than are actually being rendered. In the image above, both weapons are using the same Static Mesh.

The Normal input takes in a normal map, which is used to provide significant physical detail to the surface by perturbing the 'normal,' or facing direction, of each individual pixel. See the Masked Blend Mode documentation for more details. You can use the Opacity Mask Clip Value property on the base Material node to control the point where clipping takes place. The opaque portions will still respect lighting. This makes it a perfect solution when you need Materials that define complex solid surfaces such as wire mesh, chain link fences, and so on. When in Masked mode, a Material is either completely visible or completely invisible. As with Opacity, this takes in a value between 0.0 and 1.0, but unlike Opacity, varying shades of gray are not seen in the result. Opacity Mask is similar to Opacity, but is only available when using the Masked Blend Mode. Opacity is mostly used for Translucent, Additive, and Modulated Materials. Opaque and masked blend modes also use Opacity when using one of the subsurface shading models. You can input a value between 0 and 1, where: The Opacity input is used when using the Translucent Blend Mode, typically for Translucent, Additive, and Modulated materials. Values greater than 1 are allowed as HDR lighting is supported. Ideally, this will receive a masked texture (mostly black except in the areas that need to glow). The Emissive Color input controls which parts of your Material will appear to glow because they are emitting light. Use the Tangent input to define light directionality with a texture or Vector expression. As you change these settings in the Material, you will notice that your available inputs will update, and inputs that you do not need will be disabled. Material Domain - This controls how the Material is intended to be used, such as whether it is meant to be part of a surface, a Light Function, or a Post Process Material.ДЇortunately, Unreal Engine 4 removes the guess work for which inputs you need for a given type of Material. Shading Model - This defines how light is calculated for the surface of the Material. The three primary controlling properties in this are:Д«lend Mode - This controls how your Material will blend in with the pixels behind it. Because of this, it is important to know what type of Material you are creating before you start worrying too much about inputs. For instance, when developing a Light Function - a Material that is applied to a light - you can only use the Emissive Color input on the material and nothing else, since other inputs, such as Metallic or Roughness, would not be applicable. Not all inputs will be useful for every type of Material you create. As such, we will designate when each input is available for use, so that you know which inputs are used with each type of Material you create. Not all inputs are used with every combination of Blend Mode and Shading Model.

Nature soft occlusion shader unity