![]() The vertex shader could as follows: #version 330 ![]() The color is a uniform variable that should be set with a unique value before each object is drawn. The rendering in selection mode uses a very simple shader that applies a constant color to the pixels. Reading the pixel where the mouse is located provides the color, and hence, the ability to identify the object. to render the scene using a routine that draws each pickable object with a specific color. ![]() The selection can be performed by clicking on an object, requiring a way to determine over which object was the mouse placed.Ī simple solution to achieve this is to use color coding, i.e. Picking, or selecting, a particular item in a 3D scene may prove useful for some applications.
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