postprocessor for 3dlut colcorr; dithering should be managed in "dirty" way

dirty way: loads dithered/passthru shader according to the game's config (boolean fxdither)

assets/4096_bayer.frag

@@ -10,9 +10,9 @@ uniform sampler2D u_texture;
 
 
 // "steps" of R, G and B. Must be integer && equal or greater than 2
-uniform float rcount = 4.0;
-uniform float gcount = 4.0;
-uniform float bcount = 4.0;
+uniform float rcount = 64.0;
+uniform float gcount = 64.0;
+uniform float bcount = 64.0;
 uniform float acount = 1.0;
 
 
@@ -65,15 +65,9 @@ vec4 nearestColour(vec4 incolor) {
     color.r = floor((rgbaCounts.r - 1.0) * color.r + 0.5) / (rgbaCounts.r - 1.0);
     color.g = floor((rgbaCounts.g - 1.0) * color.g + 0.5) / (rgbaCounts.g - 1.0);
     color.b = floor((rgbaCounts.b - 1.0) * color.b + 0.5) / (rgbaCounts.b - 1.0);
+    color.a = 1.0;//floor((rgbaCounts.a - 1.0) * color.a + 0.5) / (rgbaCounts.a - 1.0);
 
-    if (rgbaCounts.a >= 2.0) {
-        color.a = floor((rgbaCounts.a - 1.0) * color.a + 0.5) / (rgbaCounts.a - 1.0);
-    }
-    else {
-        color.a = 1.0;
-    }
-
-    return (color);
+    return color;
 }
 
 void main(void) {
@@ -87,4 +81,5 @@ void main(void) {
 
     gl_FragColor = nearestColour(inColor + spread * (bayer[int(entry.y) * int(bayerSize) + int(entry.x)] / bayerDivider - 0.5));
     //gl_FragColor = nearestColour(inColor);
+    //gl_FragColor = inColor;
 }

assets/passthru.frag

@@ -0,0 +1,14 @@
+#version 120
+#ifdef GL_ES
+    precision mediump float;
+#endif
+
+
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
+
+
+void main(void) {
+    gl_FragColor = texture2D(u_texture, v_texCoords);
+}

assets/skyboxfill.frag

@@ -0,0 +1,38 @@
+#version 120
+#ifdef GL_ES
+    precision mediump float;
+#endif
+
+
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
+
+
+uniform vec3 topColor;
+uniform vec3 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
+
+
+
+void main(void) {
+    float scale = v_texCoords.y * (1.0 - parallax_size) + (parallax_size / 2.0) + (parallax * parallax_size / 2.0);
+
+    float inR = mix(bottomColor.r, topColor.r, scale);
+    float inG = mix(bottomColor.g, topColor.g, scale);
+    float inB = mix(bottomColor.b, topColor.b, scale);
+
+    gl_FragColor = vec4(inR, inG, inB, 1.0);
+}
+/*
+UV mapping coord.y
+
+-+ <- 1.0  =
+D|         = // parallax of +1
+i|  =      =
+s|  = // parallax of 0
+p|  =      =
+.|         = // parallax of -1
+-+ <- 0.0  =
+*/