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Controlling the Entropy of Feedback Loops

December 6, 2019
Connor Bell

Connor Bell

Connor Bell Graphics Programmer

A classic psychedelic video effect is to use the previously rendered image with the current one. This can create a “tracers” like effect, showing the history of color. For example, the animation of this cube is being additively blended with the previous frame that was rendered. You can control the intensity in which it's blended, scale the coordinate space of which the previous image is sampled, and the hue shift of the pixel sample.