Store 2*pi in a variable (tau).

Author: manon-traverse

test/Graphics/MeshShaders/SimpleLines.test

@@ -20,8 +20,9 @@ void main(uint groupThreadID: SV_GroupThreadID, out vertices PSInput verts[32],
 
     const float radius = 0.5;
     const float angle = float(groupThreadID) / 32.0f;
-    const float x = cos(angle * 2 * 3.14159265358) * radius;
-    const float y = sin(angle * 2 * 3.14159265358) * radius;
+    const float tau = 2.0 * 3.14159265359
+    const float x = cos(angle * tau) * radius;
+    const float y = sin(angle * tau) * radius;
 
     const float3 color = hueToRgb(angle);