Adding the shader examples

java/examples/Topics/Shaders/BadPrint/data/BadPrintFrag.glsl

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+// Copyright (C) 2007 Dave Griffiths
+// Licence: GPLv2 (see COPYING)
+// Fluxus Shader Library
+// ---------------------
+// BadPrint NPR Shader
+// This shader tries to emulate the effect
+// of a bad printing process. Can be controlled
+// with different settings for RGB
+
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+uniform vec3 Scale;
+uniform vec3 Offset;
+uniform vec3 Register;
+uniform vec3 Size;
+
+varying vec3 N;
+varying vec3 P;
+varying vec4 S;
+varying vec3 L;
+
+void main() { 
+  vec3 l = normalize(L);
+  vec3 n = normalize(N);
+  vec2 p = S.xy;
+
+  vec2 sr = p * Size.r + Register.r;
+  vec2 sg = p * Size.g + Register.g;
+  vec2 sb = p * Size.b + Register.b;
+
+  float diffuse = dot(l,n);
+    
+  float r = (sin(sr.x) + cos(sr.y)) * Scale.r + Offset.r + diffuse;
+  float g = (sin(sg.x) + cos(sg.y)) * Scale.g + Offset.g + diffuse;
+  float b = (sin(sb.x) + cos(sb.y)) * Scale.b + Offset.b + diffuse;
+ 
+  gl_FragColor = vec4(step(0.5, r), step(0.5, g), step(0.5, b), 1);
+}

java/examples/Topics/Shaders/BadPrint/data/BadPrintVert.glsl

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+// Copyright (C) 2007 Dave Griffiths
+// Licence: GPLv2 (see COPYING)
+// Fluxus Shader Library
+// ---------------------
+// BadPrint NPR Shader
+// This shader tries to emulate the effect
+// of a bad printing process. Can be controlled
+// with different settings for RGB
+
+uniform mat4 projectionMatrix;
+uniform mat4 projmodelviewMatrix;
+uniform mat3 normalMatrix;
+
+uniform vec4 lightPosition[8];
+
+attribute vec4 inVertex;
+attribute vec3 inNormal;
+
+varying vec3 N;
+varying vec3 P;
+varying vec4 S;
+varying vec3 L;
+
+void main() {    
+  N = normalize(normalMatrix * inNormal); 
+  P = inVertex.xyz;
+  gl_Position = projmodelviewMatrix * inVertex;
+  L = vec3(lightPosition[0] - gl_Position);
+  S = projectionMatrix * gl_Position;
+}