Example shaders

shaders/data-mosh/shader.json

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+{
+  "id": "data-mosh",
+  "name": "Data Mosh",
+  "description": "Temporal block-smear glitch with scanline tearing and chroma offset.",
+  "category": "Glitch",
+  "entryPoint": "shadeVideo",
+  "temporal": {
+    "enabled": true,
+    "historySource": "preLayerInput",
+    "historyLength": 8
+  },
+  "parameters": [
+    {
+      "id": "amount",
+      "label": "Amount",
+      "type": "float",
+      "default": 0.45,
+      "min": 0.0,
+      "max": 1.0,
+      "step": 0.01
+    },
+    {
+      "id": "blockCount",
+      "label": "Block Count",
+      "type": "vec2",
+      "default": [32.0, 18.0],
+      "min": [2.0, 2.0],
+      "max": [160.0, 120.0],
+      "step": [1.0, 1.0]
+    },
+    {
+      "id": "tearAmount",
+      "label": "Tear",
+      "type": "float",
+      "default": 0.18,
+      "min": 0.0,
+      "max": 1.0,
+      "step": 0.01
+    },
+    {
+      "id": "chromaShift",
+      "label": "Chroma Shift",
+      "type": "float",
+      "default": 1.8,
+      "min": 0.0,
+      "max": 12.0,
+      "step": 0.1
+    }
+  ]
+}

shaders/data-mosh/shader.slang

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+float hash21(float2 p)
+{
+	return frac(sin(dot(p, float2(127.1, 311.7))) * 43758.5453123);
+}
+
+float4 shadeVideo(ShaderContext context)
+{
+	float2 blocks = max(blockCount, float2(1.0, 1.0));
+	float2 blockId = floor(context.uv * blocks);
+	float n = hash21(blockId + floor(context.time * 8.0));
+	float historyFrame = floor(lerp(1.0, 7.0, n));
+
+	float rowNoise = hash21(float2(floor(context.uv.y * blocks.y), floor(context.time * 5.0)));
+	float tear = (rowNoise * 2.0 - 1.0) * tearAmount * amount * 0.08;
+	float2 offset = float2(tear, (hash21(blockId + 19.0) * 2.0 - 1.0) * amount * 0.025);
+	float2 moshedUv = clamp(context.uv + offset, 0.0, 1.0);
+
+	float4 previous = sampleTemporalHistory(int(historyFrame), moshedUv);
+	float2 chromaOffset = float2(chromaShift / max(context.outputResolution.x, 1.0), 0.0) * amount;
+	float r = sampleVideo(clamp(context.uv + chromaOffset, 0.0, 1.0)).r;
+	float b = sampleVideo(clamp(context.uv - chromaOffset, 0.0, 1.0)).b;
+	float3 current = float3(r, context.sourceColor.g, b);
+
+	float blockMask = step(0.35, n) * amount;
+	float3 color = lerp(current, previous.rgb, blockMask);
+	return float4(saturate(color), context.sourceColor.a);
+}