Automated Update

portable_config/shaders/CfL_Prediction.glsl

@@ -251,3 +251,42 @@ vec4 hook() {
     output_pix.xy = clamp(output_pix.xy, 0.0, 1.0);
     return output_pix;
 }
+
+//!PARAM distance_coeff
+//!TYPE float
+//!MINIMUM 0.0
+2.0
+
+//!PARAM intensity_coeff
+//!TYPE float
+//!MINIMUM 0.0
+128.0
+
+//!HOOK CHROMA
+//!BIND CHROMA
+//!BIND LUMA
+//!DESC Chroma From Luma Prediction (Smoothing Chroma)
+
+float comp_w(vec2 spatial_distance, float intensity_distance) {
+    return max(100.0 * exp(-distance_coeff * pow(length(spatial_distance), 2.0) - intensity_coeff * pow(intensity_distance, 2.0)), 1e-32);
+}
+
+vec4 hook() {
+    vec4 output_pix = vec4(0.0, 0.0, 0.0, 1.0);
+    float luma_zero = LUMA_texOff(0).x;
+    float wt = 0.0;
+    vec2 ct = vec2(0.0);
+
+    for (int i = -1; i < 2; i++) {
+        for (int j = -1; j < 2; j++) {
+            vec2 chroma_pixels = CHROMA_texOff(vec2(i, j)).xy;
+            float luma_pixels = LUMA_texOff(vec2(i, j)).x;
+            float w = comp_w(vec2(i, j), luma_zero - luma_pixels);
+            wt += w;
+            ct += w * chroma_pixels;
+        }
+    }
+
+    output_pix.xy = clamp(ct / wt, 0.0, 1.0);
+    return output_pix;
+}