{
  "domain": "ai.onnx",
  "name": "If",
  "conformance": "internal-lowering",
  "sinceVersion": 25,
  "inputs": { "cond": { "dtype": "B" }, "then_value": { "dtype": "T" }, "else_value": { "dtype": "T" } },
  "outputs": { "y": { "dtype": "T" } },
  "typeConstraints": { "T": ["float32"], "B": ["uint32", "bool"] },
  "tunables": { "WORKGROUP_SIZE": { "default": 256 } },
  "variants": [
    {
      "id": "lowered_select",
      "when": ["ranks.cond <= 1", "numel(shapes.cond) == 1", "numel(shapes.then_value) == numel(shapes.y)", "numel(shapes.else_value) == numel(shapes.y)"],
      "passes": [
        {
          "id": "main",
          "name": "If",
          "shader": "if-select.wgsl.jinja",
          "bindings": [
            { "arg": "cond", "elementType": "u32", "length": 1 },
            { "arg": "then_value", "elementType": "f32" },
            { "arg": "else_value", "elementType": "f32" },
            { "arg": "y", "elementType": "f32" },
            { "name": "params", "struct": [{ "name": "count", "type": "u32", "value": "numel(shapes.y)" }] }
          ],
          "dispatch": {
            "x": "min(ceilDiv((numel(shapes.y)), (tunables.WORKGROUP_SIZE)), 65535)",
            "y": "ceilDiv(ceilDiv((numel(shapes.y)), (tunables.WORKGROUP_SIZE)), 65535)",
            "z": 1
          }
        }
      ]
    }
  ]
}