added new layer input pass

shaders/feedback-highlight-accumulator/shader.json

@@ -1,18 +1,36 @@
 {
   "id": "feedback-highlight-accumulator",
   "name": "Feedback Highlight Accumulator",
-  "description": "Demonstrates shader-local feedback by accumulating only the brightest-looking parts of the image over a timed window, then resetting and starting again. The highlight selection is an approximation based on a luminance threshold rather than an exact percentile reduction.",
+  "description": "Demonstrates shader-local feedback by storing a rolling 4-frame per-pixel highlight history in RGBA and displaying only the newest 3 frames. The highlight selection is an approximation based on a luminance threshold rather than an exact percentile reduction.",
   "category": "Feedback",
-  "entryPoint": "shadeVideo",
+  "entryPoint": "buildHistory",
+  "passes": [
+    {
+      "id": "history",
+      "source": "shader.slang",
+      "entryPoint": "buildHistory",
+      "output": "historyBuffer"
+    },
+    {
+      "id": "display",
+      "source": "shader.slang",
+      "entryPoint": "displayHistory",
+      "inputs": [
+        "historyBuffer"
+      ],
+      "output": "layerOutput"
+    }
+  ],
   "feedback": {
-    "enabled": true
+    "enabled": true,
+    "writePass": "history"
   },
   "parameters": [
     {
       "id": "highlightThreshold",
       "label": "Highlight Threshold",
       "type": "float",
-      "default": 0.99,
+      "default": 0.92,
       "min": 0.5,
       "max": 1.5,
       "step": 0.001,
@@ -30,23 +48,23 @@
     },
     {
       "id": "accumulateAmount",
-      "label": "Accumulate Amount",
+      "label": "Contribution Amount",
       "type": "float",
-      "default": 0.2,
+      "default": 0.6,
       "min": 0.0,
       "max": 2.0,
       "step": 0.001,
-      "description": "How much of each bright sample gets added into the running feedback image."
+      "description": "Strength of each frame's highlight contribution before it is shifted into the rolling history."
     },
     {
       "id": "displayGain",
       "label": "Display Gain",
       "type": "float",
-      "default": 1.0,
+      "default": 2.5,
       "min": 0.0,
-      "max": 4.0,
+      "max": 8.0,
       "step": 0.01,
-      "description": "Brightness applied to the accumulated feedback when displayed."
+      "description": "Brightness applied to the sum of the most recent three stored highlight samples."
     },
     {
       "id": "baseMix",
@@ -56,17 +74,7 @@
       "min": 0.0,
       "max": 1.0,
       "step": 0.01,
-      "description": "Amount of the live source image kept under the accumulation."
-    },
-    {
-      "id": "resetSeconds",
-      "label": "Reset Seconds",
-      "type": "float",
-      "default": 10.0,
-      "min": 1.0,
-      "max": 60.0,
-      "step": 0.1,
-      "description": "Length of each accumulation window before the feedback resets."
+      "description": "Amount of the live source image kept under the recent highlight history display."
     }
   ]
 }