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

assets/shaders/4096_bayer_skyboxfill.frag

@@ -0,0 +1,66 @@
+#version 120
+#ifdef GL_ES
+    precision mediump float;
+#endif
+
+
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
+uniform sampler2D u_pattern;
+
+
+uniform vec4 topColor;
+uniform vec4 bottomColor;
+uniform float parallax = 0.0; // +1.0: all top col, -1.0: all bototm col, 0.0: normal grad
+uniform float parallax_size = 1.0/3.0; // 0: no parallax
+
+// inverted zoom; this value must set to (1f/zoom)
+uniform float zoomInv = 1.0;
+
+
+float quant = 63.0; // 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 * patternsize) - 0.5);
+    return nearestColour(inColor + bayerThreshold * quantiserDivider);
+}
+
+
+void main(void) {
+    float scale = v_texCoords.y * (1.0 - parallax_size) + (parallax_size / 2.0) + (parallax * parallax_size / 2.0);
+
+    float zoomSamplePoint = (1.0 - zoomInv) / 2.0;// will never quite exceed 0.5
+
+    // I don't even know if it works, and also not sure if I actually want it
+    vec4 newBottom = mix(bottomColor, topColor, zoomSamplePoint);
+    vec4 newTop = mix(topColor, bottomColor, zoomSamplePoint);
+
+    vec4 inColor = v_color * mix(newBottom, newTop, scale);
+    vec4 selvec = getDitherredDot(inColor);
+
+    gl_FragColor = selvec;
+}
+
+/*
+UV mapping coord.y
+
+-+ <- 1.0  =
+D|         = // parallax of +1
+i|  =      =
+s|  = // parallax of 0
+p|  =      =
+.|         = // parallax of -1
+-+ <- 0.0  =
+*/