shaders moved to subdir; console click on the actor to type its id in

assets/shaders/4096_bayer.frag

@@ -0,0 +1,52 @@
+/**
+ * Blue Noise texture created by Christoph Peters, released under CC0
+ * http://momentsingraphics.de/BlueNoise.html
+ */
+
+#version 120
+#ifdef GL_ES
+    precision mediump float;
+#endif
+
+
+vec4 gammaIn(vec4 col) {
+    return pow(col, vec4(2.2));
+}
+
+vec4 gammaOut(vec4 col) {
+    return pow(col, vec4(1.0 / 2.2));
+}
+
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
+uniform sampler2D u_pattern;
+uniform ivec2 rnd = ivec2(0,0);
+
+float quant = 127.0; // 64 steps -> 63.0; 256 steps -> 255.0
+vec4 quantiser = vec4(quant);
+vec4 quantiserDivider = vec4(1.0 / quant);
+
+vec2 boolean = vec2(0.0, 1.0);
+vec4 halfvec = vec4(0.5);
+
+vec2 patternsize = vec2(1.0/512.0, 1.0/512.0);
+
+vec4 nearestColour(vec4 inColor) {
+    return floor(quantiser * inColor + halfvec) * quantiserDivider;
+}
+
+vec4 getDitherredDot(vec4 inColor) {
+    vec4 bayerThreshold = vec4(texture2D(u_pattern, (gl_FragCoord.xy + rnd) * patternsize) - 0.5);
+    return nearestColour(bayerThreshold * quantiserDivider + inColor);
+}
+
+
+void main(void) {
+    // create texture coordinates based on pixelSize //
+    vec4 inColor = v_color * texture2D(u_texture, v_texCoords);
+    vec4 selvec = getDitherredDot(inColor);
+
+//    gl_FragColor = inColor * boolean.yyyx + boolean.xxxy;
+    gl_FragColor = selvec * boolean.yyyx + inColor * boolean.xxxy; // use quantised RGB but not the A
+}