Fix shader underwater

src/main/resources/assets/mindmotion/shaders/program/desaturate.fsh

@@ -2,9 +2,9 @@
 
 uniform sampler2D DiffuseSampler;
 uniform float Desat;
-uniform float BlurAmount;   // NEW
-uniform float Vignette;     // NEW
-uniform float FogStrength;  // NEW
+uniform float BlurAmount;
+uniform float Vignette;
+uniform float FogStrength;
 
 in vec2 texCoord;
 in vec2 oneTexel;
@@ -14,8 +14,7 @@ out vec4 fragColor;
 vec4 sampleBlur() {
     if (BlurAmount <= 0.001) return texture(DiffuseSampler, texCoord);
 
-    // lighter blur kernel
-    float w = BlurAmount * 0.5; // reduce strength globally
+    float w = BlurAmount * 0.5;
 
     vec4 sum = vec4(0.0);
     sum += texture(DiffuseSampler, texCoord + oneTexel * vec2(-1,  0)) * w;
@@ -23,7 +22,6 @@ vec4 sampleBlur() {
     sum += texture(DiffuseSampler, texCoord + oneTexel * vec2( 0, -1)) * w;
     sum += texture(DiffuseSampler, texCoord + oneTexel * vec2( 0,  1)) * w;
 
-    // center weight higher to avoid total smudge
     vec4 center = texture(DiffuseSampler, texCoord) * (1.0 - w * 4.0);
 
     return center + sum;
@@ -32,19 +30,16 @@ vec4 sampleBlur() {
 void main() {
     vec4 col = texture(DiffuseSampler, texCoord);
     vec4 blurred = sampleBlur();
-    col = mix(col, blurred, BlurAmount); // Apply blur
+    col = mix(col, blurred, BlurAmount);
 
-    // Apply grayscale/desat
     float gray = dot(col.rgb, vec3(0.2126, 0.7152, 0.0722));
     col.rgb = mix(col.rgb, vec3(gray), clamp(Desat, 0.0, 1.0));
 
-    // Fog: push color toward light gray
     col.rgb = mix(col.rgb, vec3(0.75, 0.75, 0.8), FogStrength);
 
-    // Vignette (darken edges)
     float dist = distance(texCoord, vec2(0.5, 0.5));
     float vign = smoothstep(0.3, 0.7, dist);
     col.rgb = mix(col.rgb, col.rgb * 0.4, vign * Vignette);
 
-    fragColor = col;
+    fragColor = vec4(col.rgb, 1.0);
 }