new collision displacer: got one-block-ceiling-passthru bug, but otherwise tolerable

assets/4096.frag

@@ -2,10 +2,13 @@ varying vec4 v_color;
 varying vec2 v_texCoords;
 uniform sampler2D u_texture;
 
-
 void main(void) {
-    vec4 color = texture2D(u_texture, v_texCoords);
-    color = floor(15.0 * color + 0.5) / 15.0;
+    vec4 color = texture2D(u_texture, v_texCoords).rgba;
+
+    color.r = floor(15.0 * color.r + 0.5) / 15.0;
+    color.g = floor(15.0 * color.g + 0.5) / 15.0;
+    color.b = floor(15.0 * color.b + 0.5) / 15.0;
+    // a: passthrough
 
     gl_FragColor = color;
 }

assets/4096_bayer.frag

@@ -0,0 +1,59 @@
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
+
+
+
+uniform mat4 Bayer;
+uniform float monitorGamma;
+
+vec4 gammaIn(vec4 col) {
+    return pow(col, vec4(vec3(monitorGamma), 1.0));
+}
+
+vec4 gammaOut(vec4 col) {
+    return pow(col, vec4(vec3(1.0 / monitorGamma), 1.0));
+}
+
+void main(void) {
+    // create texture coordinates based on pixelSize //
+    float pixelSize = 1.0;
+
+    vec2 pixelSizeVec = vec2(float(pixelSize), float(pixelSize));
+
+    vec2 discrete = (gl_FragCoord.xy + 0.001) / v_texCoords / pixelSizeVec;
+    //vec2 discrete = (gl_FragCoord.xy) / v_texCoords / pixelSizeVec;
+
+    discrete = floor(discrete * v_texCoords) / discrete;
+
+    vec4 color = texture2D(u_texture, discrete).rgba;
+
+
+    // add Bayer matrix entry to current pixel //
+    vec2 entry = mod(gl_FragCoord.xy / pixelSizeVec, vec2(4, 4));
+
+    color.r = color.r + Bayer[int(entry.x)][int(entry.y)] / 17.0 - 0.5;
+    color.g = color.g + Bayer[int(entry.x)][int(entry.y)] / 17.0 - 0.5;
+    color.b = color.b + Bayer[int(entry.x)][int(entry.y)] / 17.0 - 0.5;
+    //color.a = color.a + Bayer[int(entry.x)][int(entry.y)] / 17.0 - 0.5;
+
+
+    // find nearest 8-bit color //
+    color.r = floor(15.0 * color.r + 0.5) / 15.0;
+    color.g = floor(15.0 * color.g + 0.5) / 15.0;
+    color.b = floor(15.0 * color.b + 0.5) / 15.0;
+    //color.a = floor(15.0 * color.a + 0.5) / 15.0;
+
+    gl_FragColor = color;
+
+
+
+
+
+
+
+    //vec4 color = texture2D(u_texture, v_texCoords);
+    //color = floor(15.0 * color + 0.5) / 15.0;
+//
+    //gl_FragColor = color;
+}

assets/blur.frag

@@ -1,3 +1,7 @@
+#ifdef GL_ES
+    precision mediump float;
+#endif
+
 
 varying vec4 v_color;
 varying vec2 v_texCoords;