1 files changed, 47 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_ComputeScreenPos.shader b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_ComputeScreenPos.shader
new file mode 100644
index 00000000..175ae3ba
--- /dev/null
+++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_ComputeScreenPos.shader
@@ -0,0 +1,47 @@
+Shader "Hidden/ComputeScreenPos"
+{
+	Properties
+	{
+		_A ("_A", 2D) = "white" {}
+	}
+	SubShader
+	{
+		Pass
+		{
+			CGPROGRAM
+			#include "UnityCG.cginc"
+			#pragma vertex vert_img
+			#pragma fragment frag
+
+			sampler2D _A;
+			
+			float4 frag( v2f_img i ) : SV_Target
+			{
+				float4 a = tex2D( _A, i.uv );
+				float4 screenPos = ComputeScreenPos(a);
+				return screenPos;
+			}
+			ENDCG
+		}
+
+		Pass
+		{
+			CGPROGRAM
+			#include "UnityCG.cginc"
+			#pragma vertex vert_img
+			#pragma fragment frag
+
+			sampler2D _A;
+
+			float4 frag (v2f_img i) : SV_Target
+			{
+				float4 a = tex2D(_A, i.uv);
+				float4 screenPos = ComputeScreenPos(a);
+				screenPos = screenPos / screenPos.w;
+				screenPos.z = (UNITY_NEAR_CLIP_VALUE >= 0) ? screenPos.z : screenPos.z* 0.5 + 0.5;
+				return screenPos;
+			}
+			ENDCG
+		}
+	}
+}