Create LerpColorNearToFarPlane.shader

unitycoder · web-flow · commit ece12178adb1 · 2017-03-18T22:53:36.000+08:00
diff --git a/Shaders/Debug/LerpColorNearToFarPlane.shader b/Shaders/Debug/LerpColorNearToFarPlane.shader
@@ -0,0 +1,52 @@
+// source: https://forum.unity3d.com/threads/depth-shader-invert-it.12692/#post-89430
+// lerp 2 colors between camera NearClipPlane to FarClipPlane
+
+Shader "UnityCommunity/Debug/LerpColorNearToFarPlane" 
+{
+	Properties {
+		_ColorNear ("Color Near", Color) = (1,0,0,1)
+		_ColorFar ("Color Far", Color) = (0,1,0,1)
+	}
+	SubShader 
+	{
+		Pass 
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			#include "UnityCG.cginc"
+ 
+			struct appdata
+			{
+				float4 vertex : POSITION;
+			};
+
+			struct v2f
+			{
+				float4 pos : SV_POSITION;
+				float4 color : COLOR;
+			};
+ 
+			uniform float4 _ColorNear;
+			uniform float4 _ColorFar;
+ 
+			v2f vert(appdata v) 
+			{
+				v2f o;
+				o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
+				float depth;
+				COMPUTE_EYEDEPTH(depth);
+				float factor = depth * _ProjectionParams.w;
+				o.color = lerp(_ColorNear, _ColorFar, factor);
+				return o;
+			}
+
+			fixed4 frag (v2f i) : SV_Target
+			{
+				return i.color;
+			}
+
+			ENDCG
+		}
+	}
+}
