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Panda3D 1.6 Game Engine by Dave Mathews

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Blending layers

Controlling how the layers in Spacescape blend together is both the most important aspect of creating a skybox and also the most complicated. All of the layers have controls for blending that work similarly to the blending methods available in image editors, such as Photoshop or GIMP, but unlike those programs there aren't any control presets like "Multiply" or "Lighten". Instead, we get direct access to the equation those presets use.

Before we get into the equation itself, we need to define some things the equation uses. First off, let's talk about the destination and the source. These refer to the two things that are being blended. The source is the layer whose blending controls we're working with. The destination is the combination ...

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