Debug binormals (bitangents) vectors.

Author: przemyslawzaworski

binormals.shader

@@ -0,0 +1,43 @@
+//Debug binormals (called also bitangents)
+
+Shader "Binormals"
+{
+	Subshader
+	{
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vertex_shader
+			#pragma fragment pixel_shader
+			#pragma target 2.0
+			
+			struct structure
+			{
+				float4 vertex : SV_POSITION;
+				float4 color : COLOR;
+			};
+	
+			float3 cross(float3 a, float3 b)
+			{
+				return a.yzx*b.zxy-a.zxy*b.yzx;
+			}
+	
+			structure vertex_shader (float4 vertex:POSITION,float3 normal:NORMAL,float4 tangent:TANGENT)
+			{
+				structure vs;
+				vs.vertex = UnityObjectToClipPos (vertex);
+				float3 binormal = cross(normal,tangent.xyz)*tangent.w;
+				vs.color = float4(binormal*0.5+0.5,1.0);
+				return vs;
+			}
+
+			float4 pixel_shader (structure ps ) : SV_TARGET
+			{
+				return ps.color;
+			}
+
+			ENDCG
+
+		}
+	}
+}