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OpenGL pixel shader: Difference between revisions
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See also: [http://www.opengl.org/documentation/glsl/ opengl.org's gl shader language documentation], and [http://www.lighthouse3d.com/tutorials/glsl-tutorial/ lighthouse3d.com's glsl tutorial].
=={{header|C}}==
{{libheader|GLUT}}
Getting a true (pseudo) random number is surprisingly tricky. The following code makes something noisy, but not at all random:
<lang c>#include <stdio.h>
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