Merge pull request #213 from keijiro/fix-range

Improvements to RandomRangeNode

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Math/Range/RandomRangeNode.cs

+using UnityEngine;
 using System.Reflection;
 
 namespace UnityEditor.ShaderGraph
         }
 
         static string Unity_RandomRange(
-            [Slot(0, Binding.None)] Vector1 Seed,
+            [Slot(0, Binding.None)] Vector2 Seed,
             [Slot(1, Binding.None)] Vector1 Min,
             [Slot(2, Binding.None, 1, 1, 1, 1)] Vector1 Max,
             [Slot(3, Binding.None)] out Vector1 Out)
 {
-     {precision} randomno =  frac(sin(dot({precision}2(Seed, Seed), float2(12.9898, 78.233)))*43758.5453);
-     Out = floor(randomno * (Max - Min + 1)) + Min;
+     {precision} randomno =  frac(sin(dot(Seed, float2(12.9898, 78.233)))*43758.5453);
+     Out = lerp(Min, Max, randomno);
 }";
         }
     }