The 3D Artist's Notebook #3 - Textures
Bringing a Model to Life using TexturesTexturing your 3D model is really where it comes to life. It transforms a digital shape to an object that you recognise, using multiple images to create a photo-realistic texture. In this article I will focus on a stainless steel texture used on a watch case or watch bracelet. For example:
Warrington Solid Stainless Steel Watch Strap made with Cinema4D + Octane + HDRI Light StudioThis first image has a very simple texture and relies more on the lighting to achieve a photo-realistic look. There is only one material applied to this model, Octane Glossy, with the following settings:
- Diffuse: Black
- Specular: Black & Float 1
- Roughness: Float 0
- Index: 8
IndexThere are a few things to note here, the values previously mentioned can be changed depending on the type of metal you want. For example, the Index. Setting this to 1.3 is the standard value for glossy materials and changing this value can determine how 'metallic' the material can look.
SpecularAnother value that has a drastic effect is the Specular option, the colour value within this can change the entire colour of the metal. Moreover, this is how you can achieve a yellow gold or rose gold look. Or you can go wild with some very bright colours.
Texture Maps and Surface Imperfections
Warrington Solid Stainless Steel Watch Strap 3D Render made with Cinema4D + Octane + HDRILightStudioThe image above makes most of multiple texturing methods on Cinema4D and Octane Render by using different 'maps' and 'nodes'. A texture map is an image containing data that is applied to a surface or polygon in a 3D workspace. They often contain RGB colour data and can be used to control the Diffuse, Specular, Roughness, Normal and other inputs. An image like this would be used to achieve photo-realism, but it's not always the best option - especially for rendering a white background image for website use. Take this G-02 GMT for example, not doing the extra steps of adding surface imperfections benefit this render massively. Keeping it clean and symmetrical, this image aims to be 'perfect' rather than 'photo-realistic'.