testss

Library/PackageCache/com.unity.render-pipelines.core@11.0.0/ShaderLibrary/SDF2D.hlsl

@@ -0,0 +1,28 @@
+#ifndef UNITY_SDF2D_INCLUDED
+#define UNITY_SDF2D_INCLUDED
+
+// Ref: https://www.iquilezles.org/www/articles/distfunctions2d/distfunctions2d.htm
+
+float CircleSDF(float2 position, float radius)
+{
+    return length(position) - radius;
+}
+
+float RectangleSDF(float2 position, float2 bound)
+{
+    float2 d = abs(position) - bound;
+    return length(max(d, float2(0, 0))) + min(max(d.x, d.y), 0.0);
+}
+
+float EllipseSDF(float2 position, float2 r)
+{
+    float2 p  = position;
+    float2 r2 = r*r;
+
+    float  k0 = length(p/r);
+    float  k1 = length(p/r2);
+
+    return k0*(k0 - 1.0)/k1;
+}
+
+#endif // UNITY_SDF2D_INCLUDED