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1. What is glass material?
In 3D modeling and rendering, glass is a very common material. It is characterized by its ability to be transparent, reflect and refract light, as well as to have different colors and textures.
Clear glass is the most common type of glass material, which allows light to pass through without much deflection. In the modeling software, we can simulate the effects of different thicknesses and types of glass by adjusting the refractive index of the material. The higher the refractive index, the greater the angle at which light is deflected as it passes through the glass. To add realism to the clear glass, we can add some tiny water droplets or stain effects. These details can be achieved by using the texture or the renderer's own material parameters. Also, when modeling transparent glass objects. Pay attention to the edges and thickness of the object to make the effect more realistic.
2. How to use GLTF editor to make glass materials
With the above explanation, we have a simple understanding of how to set up the glass material, and in the following article we will use an example to show how to use transparency and transparency maps to make a transparent glass drinking glass.
The tool we're using this time is the GLTF Editor -NSDT, which is a web-based online material mapping tool that supports a variety of common material map editing.
FIRST WE USE THE GLTF EDITOR -NSDT TO OPEN A WHITE MODEL (A MODEL WITHOUT ANY MATERIAL MAPS), AS SHOWN BELOW:
The current cup model does not have any material, it looks like a white mold, and we set the transparent and transparent effects for the water cup separately:
0.5 transparency, no transparent material map
The glass material is set to 1 transparency
As you can see, setting the transparency or transparency map alone will not achieve the desired effect, so let's combine the two:
Glass, 0.4 transparency
Transparency maps play a key role in achieving model transparency. By combining the transparency channel of a transparency map with the transparency properties of the model, you can achieve partial transparency with different transparencies. The transparency information of each pixel of the transparency map is applied to the corresponding model surface, which affects the overall transparency rendering.
Transparency mapping is a special mapping technique used to describe that some parts of a texture image are transparent and others are opaque. It is often used to achieve a local transparency effect on the surface of an object, which can make the rendering result more realistic and natural.
3. Summary
GLTF Editor -NSDT is a rare and practical online model editing tool that can not only set the texture map of the 3D model, but also set the geometric origin of the model, and merge the mesh with the same material properties to achieve model lightweight.
Note: Achieving an effect usually requires several Material Maps to achieve the effect.
Reprint: How to make a transparent glass material in a 3D model