![]() ![]() Traditional shaders calculate rendering effects on graphics hardware with a high degree of flexibility. They now perform a variety of specialized functions in various fields within the category of computer graphics special effects, or else do video post-processing unrelated to shading, or even perform functions unrelated to graphics. In computer graphics, a shader is a type of computer program originally used for shading in 3D scenes (the production of appropriate levels of light, darkness, and color in a rendered image). This shader works by replacing all light areas of the image with white, and all dark areas with a brightly colored texture. ![]() The unaltered, unshaded image is on the left, and the same image has a shader applied on the right. Another use of shaders is for special effects, even on 2D images, e.g. ![]()
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