Added edge detection & noise multiplier

Shaders/Hybred/StochasticAA.fx

@@ -12,21 +12,44 @@ uniform float JitterAmount < \
     ui_max = 2.0; \
     ui_step = 0.005; \
     ui_type = "slider"; \
+    ui_tooltip = "How much the noise moves, which is what causes the AA effect"; \
 > = 0.35;
 
+uniform float NoiseMultiplier < \
+    ui_label = "Noise Amount"; \
+    ui_min = 1.0; \
+    ui_max = 25.0; \
+    ui_step = 0.5; \
+    ui_type = "slider"; \
+    ui_tooltip = "How strong the noise is"; \
+> = 15.0;
+
+uniform float LuminanceThreshold < \
+    ui_label = "Luma Edge Threshold"; \
+    ui_min = 0.0; \
+    ui_max = 0.15; \
+    ui_step = 0.01; \
+    ui_type = "slider"; \
+    ui_tooltip = "Strength of edge detection, affects what the noise is applied to"; \
+> = 0.0;
+
 texture2D ColorTex : COLOR;
 sampler2D sColorTex { Texture = ColorTex; };
 
 // https://www.shadertoy.com/view/ltB3zD
 float GetGoldNoise(float2 vpos, float seed){
     float n = frac(tan(distance(vpos * PHI, vpos) * seed) * vpos.x);
-	n = isnan(n) ? 0.0 : n;
-	return n;
+    n = isnan(n) ? 0.0 : n;
+    return n;
 }
 
 void PS_Main(in VSOUT i, out float4 o : SV_Target0)
 {
-    i.uv += (GetGoldNoise(i.vpos.xy, frame_count % 16 + 1) * 2.0 - 1.0) * BUFFER_PIXEL_SIZE * JitterAmount;
+    float lum = dot(tex2D(sColorTex, i.uv).rgb, float3(0.299, 0.587, 0.114));
+    float threshold = LuminanceThreshold;
+    float edge = saturate((lum - threshold) * NoiseMultiplier);
+
+    i.uv += (GetGoldNoise(i.vpos.xy, frame_count % 16 + 1) * 2.0 - 1.0) * BUFFER_PIXEL_SIZE * JitterAmount * edge;
     o = tex2D(sColorTex, i.uv);
 }