Creating 3D Game Art for the iPhone with Unity Part 9 ppsx

I created a different look for my game as you can see in the comparison of

the default-baked scene and the color-graded scene.

Adding Grime to Maps

The level looks great with the lightmaps applied; however, for a trash yard, the

scene looks way to clean. We need to introduce some dirt and grime to the scene.

This is quite simple to do in Photoshop. First, I created a grime brush preset as

shown in Fig. 8.30.

I then created a new layer and chose my preset brush, changed some set￾tings in the brush editor so that I could stamp the grime down by simply

left-clicking. I then began to stamp random dirt across the scene as shown in

Fig. 8.31. It’s important to be mindful of the seams as due to the nature of the

lightmap UVs, there are lots of seams and careless painting can really reveal

these seams as shown in Fig. 8.32.

FIG 8.28 The Exposure Was Adjusted

in Photoshop Using the HDR Toning

Tools.

FIG 8.29 Here You Can See the

Difference That Color Grading Your

Maps Can Have on the Style and Look

of Your Levels.

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Creating 3D Game Art for the iPhone with Unity

FIG 8.30 I Took a Grime Map from My Texture Collection and Created a Brush Preset in Photoshop.

FIG 8.31 The Dirt Was Stamped Across the Scene and Was Placed on Its Own Layer.

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Creating Lightmaps Using Beast