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My project/Library/PackageCache/com.unity.shadergraph@c7cb9a0feac2/Documentation~/Blackbody-Node.md

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+# Blackbody Node
+
+## Description
+
+Samples a **Gradient** that simulates the effect of black body radiation.
+The calculations in this node are based on data gathered by Mitchell Charity.
+This node outputs color in linear RGB space and preforms the conversion using a D65 whitepoint and a CIE 1964 10 degree color space.
+For more information, see [What color is a blackbody?](http://www.vendian.org/mncharity/dir3/blackbody/)
+
+## Ports
+
+| Name        | Direction           | Type  | Binding | Description |
+|:------------ |:-------------|:-----|:---|:---|
+| Temperature      | Input | Float    | None | Temperature or temperature map in Kelvin to sample.  |
+| Out | Output      |    Vector 3 | None | Intensity represented by color in Vector 3. |
+
+## Generated Code Example
+
+The following example code represents one possible outcome of this node.
+
+```
+void Unity_Blackbody_float(float Temperature, out float3 Out)
+{
+    float3 color = float3(255.0, 255.0, 255.0);
+    color.x = 56100000. * pow(Temperature,(-3.0 / 2.0)) + 148.0;
+    color.y = 100.04 * log(Temperature) - 623.6;
+    if (Temperature > 6500.0) color.y = 35200000.0 * pow(Temperature,(-3.0 / 2.0)) + 184.0;
+    color.z = 194.18 * log(Temperature) - 1448.6;
+    color = clamp(color, 0.0, 255.0)/255.0;
+    if (Temperature < 1000.0) color *= Temperature/1000.0;
+    Out = color;
+}
+```