shader tweak for LUT application

shaders/lut-apply/shader.json

@@ -1,7 +1,7 @@
 {
   "id": "lut-apply",
   "name": "3D LUT Apply",
-  "description": "Applies the packaged 33-point .cube LUT to the incoming video using trilinear interpolation.",
+  "description": "Applies the packaged 33-point .cube LUT to the incoming video using tetrahedral interpolation and optional output dithering.",
   "category": "Color",
   "entryPoint": "shadeVideo",
   "textures": [
@@ -38,6 +38,15 @@
       "max": 2.0,
       "step": 0.01
     },
+    {
+      "id": "ditherAmount",
+      "label": "Output Dither",
+      "type": "float",
+      "default": 0.5,
+      "min": 0.0,
+      "max": 1.0,
+      "step": 0.01
+    },
     {
       "id": "clampInput",
       "label": "Clamp Input",