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How to use Emission Maps in Blender and Unity

For this lesson, I will show you how to create an emission map and how to apply them to your models in Blender and Unity. An emission map is used to make parts of your model glow or give off light. In Unity, if you bake your static objects with emission materials it will cast light onto other static objects around it. You can also apply a bloom post-processing effect if you want to give your emission materials a halo effect.

Zombie Model: https://skfb.ly/6BKSF

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Biohazard Barrel Model

Toxic Biohazard Barrel Model with Glowing Slime

blender 2.8 toxic biohazard barrel model with glowing green slime

Controls

  • Left-click and drag to rotate the model
  • After clicking on the model you can zoom in and out with the scroll wheel
  • Click P to explode and respawn the model
    • If you tip the model upside down it will begin playing a particle effect of green slime pouring out the top.

This toxic biohazard barrel model is a model asset that I wanted to create for a game project that I have been wanting to make involving zombies. I used Blender 2.8 and Photoshop to create this model and then I imported it into Unity. This model is so far the most successful model I have created. It was not too hard to create but it was a lot of fun. My favorite part about this model is the emission mask which looks extra cool with the post-processing bloom effect. I can just imagine this barrel being in an epic zombie game like Dying Light and the slime only showing it’s glow at night.

If you want to get familiar with modeling with blender I would highly recommend starting with something simple like this biohazard barrel as it is not very complex yet you can add a lot of character to your barrel

The source I found to be the most helpful with creating this biohazard barrel model were these two videos by the Blender Guru

Here are some time-lapses of the creation process for this model.

Modeling

UV Mapping

Creating High Res Model

Sculpting

Baking Normal Map

Texturing

Importing into Unity