From 917e9e0b320775634dc2e710f7deac74fd0822f0 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Thu, 22 Oct 2020 23:30:02 +0800
Subject: * amplify shader editor

---
 .../Previews/Preview_VertexTangentNode.shader      | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_VertexTangentNode.shader

(limited to 'Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_VertexTangentNode.shader')

diff --git a/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_VertexTangentNode.shader b/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_VertexTangentNode.shader
new file mode 100644
index 00000000..3769192e
--- /dev/null
+++ b/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_VertexTangentNode.shader
@@ -0,0 +1,31 @@
+Shader "Hidden/VertexTangentNode"
+{
+	SubShader
+	{
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert_img
+			#pragma fragment frag
+			#include "UnityCG.cginc"
+
+			float4 frag( v2f_img i ) : SV_Target
+			{
+				float2 tp = 2 * i.uv - 1;
+				float tr = sqrt( dot(tp,tp) );
+				tr = saturate( tr );
+				//if ( tr < 1 ) {
+					float2 tuvs;
+					float f = ( 1 - sqrt( 1 - tr ) ) / tr;
+
+					float3 tangent = normalize(float3( (1-f)*2, tp.y*0.01, tp.x ));
+					return float4((tangent), 1);
+				//}
+				//else {
+				//	return 0;
+				//}
+			}
+			ENDCG
+		}
+	}
+}
-- 
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