1 files changed, 63 insertions, 0 deletions
diff --git a/Assets/ThirdParty/VRM/VRM/UniGLTF/Resources/Shaders/NormalMapEncoder.shader b/Assets/ThirdParty/VRM/VRM/UniGLTF/Resources/Shaders/NormalMapEncoder.shader
new file mode 100644
index 00000000..c4d5fc6a
--- /dev/null
+++ b/Assets/ThirdParty/VRM/VRM/UniGLTF/Resources/Shaders/NormalMapEncoder.shader
@@ -0,0 +1,63 @@
+Shader "UniGLTF/NormalMapEncoder"
+{
+	Properties
+	{
+		_MainTex("Texture", 2D) = "white" {}
+	}
+	SubShader
+	{
+		// No culling or depth
+		Cull Off ZWrite Off ZTest Always
+
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+
+			#include "UnityCG.cginc"
+
+			struct appdata
+			{
+				float4 vertex : POSITION;
+				float2 uv : TEXCOORD0;
+			};
+
+			struct v2f
+			{
+				float2 uv : TEXCOORD0;
+				float4 vertex : SV_POSITION;
+			};
+
+			v2f vert(appdata v)
+			{
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.uv = v.uv;
+				return o;
+			}
+
+			sampler2D _MainTex;
+
+			fixed4 frag(v2f i) : SV_Target
+			{
+				half4 col = tex2D(_MainTex, i.uv);
+
+#if defined(UNITY_NO_DXT5nm)
+				// This is a trick from UnpackNormal in UnityCG.cginc !!!!
+				return col;
+#endif
+
+				half4 normal;
+				normal.x = 1.0;
+				normal.y = col.y;
+				normal.z = 1.0;
+				normal.w = col.x;
+
+				return normal;
+			}
+			ENDCG
+		}
+	}
+}
+