osc multi arguments

shaders/video-transform/shader.json

@@ -0,0 +1,54 @@
+{
+  "id": "video-transform",
+  "name": "Video Transform",
+  "description": "Zooms, pans, and rotates the video by remapping output pixels back into source UV space.",
+  "category": "Utility",
+  "entryPoint": "shadeVideo",
+  "parameters": [
+    {
+      "id": "zoom",
+      "label": "Zoom",
+      "type": "float",
+      "default": 1.0,
+      "min": 0.1,
+      "max": 8.0,
+      "step": 0.01
+    },
+    {
+      "id": "pan",
+      "label": "Pan",
+      "type": "vec2",
+      "default": [0.0, 0.0],
+      "min": [-1.0, -1.0],
+      "max": [1.0, 1.0],
+      "step": [0.001, 0.001]
+    },
+    {
+      "id": "rotationDegrees",
+      "label": "Rotation",
+      "type": "float",
+      "default": 0.0,
+      "min": -180.0,
+      "max": 180.0,
+      "step": 0.1
+    },
+    {
+      "id": "edgeMode",
+      "label": "Edge Mode",
+      "type": "enum",
+      "default": "black",
+      "options": [
+        { "value": "black", "label": "Black" },
+        { "value": "clamp", "label": "Clamp" },
+        { "value": "wrap", "label": "Wrap" },
+        { "value": "mirror", "label": "Mirror" }
+      ]
+    },
+    {
+      "id": "outsideColor",
+      "label": "Outside Color",
+      "type": "color",
+      "default": [0.0, 0.0, 0.0, 1.0]
+    }
+  ]
+}

shaders/video-transform/shader.slang

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+static const float PI = 3.14159265358979323846;
+
+float2 rotateAroundCenter(float2 uv, float radians)
+{
+	float2 centered = uv - 0.5;
+	float s = sin(radians);
+	float c = cos(radians);
+	return float2(c * centered.x - s * centered.y, s * centered.x + c * centered.y) + 0.5;
+}
+
+float mirroredCoordinate(float coordinate)
+{
+	float wrapped = frac(coordinate * 0.5) * 2.0;
+	return wrapped <= 1.0 ? wrapped : 2.0 - wrapped;
+}
+
+float2 applyEdgeMode(float2 uv, out bool inside)
+{
+	inside = uv.x >= 0.0 && uv.x <= 1.0 && uv.y >= 0.0 && uv.y <= 1.0;
+
+	if (edgeMode == 1)
+		return clamp(uv, 0.0, 1.0);
+	if (edgeMode == 2)
+		return frac(uv);
+	if (edgeMode == 3)
+		return float2(mirroredCoordinate(uv.x), mirroredCoordinate(uv.y));
+
+	return uv;
+}
+
+float4 shadeVideo(ShaderContext context)
+{
+	float safeZoom = max(zoom, 0.001);
+	float2 sourceUv = (context.uv - 0.5) / safeZoom + 0.5;
+	sourceUv -= pan;
+	sourceUv = rotateAroundCenter(sourceUv, -rotationDegrees * (PI / 180.0));
+
+	bool inside = false;
+	float2 sampledUv = applyEdgeMode(sourceUv, inside);
+	if (!inside && edgeMode == 0)
+		return outsideColor;
+
+	return sampleVideo(sampledUv);
+}