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Packages/com.arongranberg.aline/Resources/aline_outline_mat.shader

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+Shader "Hidden/ALINE/Outline" {
+	Properties {
+		_Color ("Main Color", Color) = (1,1,1,0.5)
+		_FadeColor ("Fade Color", Color) = (1,1,1,0.3)
+		_PixelWidth ("Width (px)", Float) = 4
+		_LengthPadding ("Length Padding (px)", Float) = 0
+	}
+
+	HLSLINCLUDE
+	float4 _Color;
+	float4 _FadeColor;
+	float _PixelWidth;
+	float _LengthPadding;
+
+	// Number of screen pixels that the _Falloff texture corresponds to
+	static const float FalloffTextureScreenPixels = 2;
+
+	#pragma vertex vert
+	#pragma fragment frag
+	ENDHLSL
+
+	// First subshader is for the HighDefinitionRenderPipeline.
+	// The shader contents are identical except that it defines UNTIY_HDRP.
+	SubShader {
+		PackageRequirements {
+            "com.unity.render-pipelines.high-definition": "0.1"
+        }
+		Blend SrcAlpha OneMinusSrcAlpha
+		ZWrite Off
+		Offset -3, -50
+		Tags { "IgnoreProjector"="True" "RenderType"="Overlay" "RenderPipeline"="HighDefinitionRenderPipeline" }
+		// With line joins some triangles can actually end up backwards, so disable culling
+		Cull Off
+
+		// Render behind objects
+		Pass {
+			ZTest Greater
+
+			HLSLPROGRAM
+			#define UNITY_HDRP
+			#include "aline_common_line.cginc"
+
+			line_v2f vert (appdata_color v, out float4 outpos : SV_POSITION) {
+				return line_vert_raw(v, _Color * _FadeColor, _PixelWidth, _LengthPadding, outpos);
+			}
+
+			half4 frag (line_v2f i, float4 screenPos : VPOS) : COLOR {
+				return i.col * float4(1,1,1, calculateLineAlpha(i, i.lineWidth, FalloffTextureScreenPixels));
+			}
+			ENDHLSL
+		}
+
+		// First pass writes to the Z buffer where the lines have a pretty high opacity
+		Pass {
+			ZTest LEqual
+			ZWrite On
+			ColorMask 0
+
+			HLSLPROGRAM
+			#define UNITY_HDRP
+			#include "aline_common_line.cginc"
+
+			line_v2f vert (appdata_color v, out float4 outpos : SV_POSITION) {
+				line_v2f o = line_vert_raw(v, float4(1,1,1,1), _PixelWidth, _LengthPadding, outpos);
+				o.col = float4(1,1,1,1);
+				return o;
+			}
+
+			half4 frag (line_v2f i, float4 screenPos : VPOS) : SV_Target {
+				float a = calculateLineAlpha(i, i.lineWidth, FalloffTextureScreenPixels);
+				if (a < 0.7) discard;
+				return float4(1,1,1,a);
+			}
+			ENDHLSL
+		}
+
+		// Render in front of objects
+		Pass {
+			ZTest LEqual
+
+			HLSLPROGRAM
+			#define UNITY_HDRP
+			#include "aline_common_line.cginc"
+
+			line_v2f vert (appdata_color v, out float4 outpos : SV_POSITION) {
+				return line_vert_raw(v, _Color, _PixelWidth, _LengthPadding, outpos);
+			}
+
+			half4 frag (line_v2f i, float4 screenPos : VPOS) : SV_Target {
+				UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
+				return i.col * float4(1,1,1, calculateLineAlpha(i, i.lineWidth, FalloffTextureScreenPixels));
+			}
+			ENDHLSL
+		}
+	}
+
+
+	SubShader {
+		Blend SrcAlpha OneMinusSrcAlpha
+		ZWrite Off
+		Offset -3, -50
+		Tags { "IgnoreProjector"="True" "RenderType"="Overlay" }
+		// With line joins some triangles can actually end up backwards, so disable culling
+		Cull Off
+
+		// Render behind objects
+		Pass {
+			ZTest Greater
+
+			HLSLPROGRAM
+			#include "aline_common_line.cginc"
+
+			line_v2f vert (appdata_color v, out float4 outpos : SV_POSITION) {
+				return line_vert_raw(v, _Color * _FadeColor, _PixelWidth, _LengthPadding, outpos);
+			}
+
+			half4 frag (line_v2f i, float4 screenPos : VPOS) : SV_Target {
+				return i.col * float4(1,1,1, calculateLineAlpha(i, i.lineWidth, FalloffTextureScreenPixels));
+			}
+			ENDHLSL
+		}
+
+		// First pass writes to the Z buffer where the lines have a pretty high opacity
+		Pass {
+			ZTest LEqual
+			ZWrite On
+			ColorMask 0
+
+			HLSLPROGRAM
+			#include "aline_common_line.cginc"
+
+			line_v2f vert (appdata_color v, out float4 outpos : SV_POSITION) {
+				line_v2f o = line_vert_raw(v, float4(1,1,1,1), _PixelWidth, _LengthPadding, outpos);
+				o.col = float4(1,1,1,1);
+				return o;
+			}
+
+			half4 frag (line_v2f i, float4 screenPos : VPOS) : SV_Target {
+				float a = calculateLineAlpha(i, i.lineWidth, FalloffTextureScreenPixels);
+				if (a < 0.7) discard;
+				return float4(1,1,1,a);
+			}
+			ENDHLSL
+		}
+
+		// Render in front of objects
+		Pass {
+			ZTest LEqual
+
+			HLSLPROGRAM
+			#include "aline_common_line.cginc"
+
+			line_v2f vert (appdata_color v, out float4 outpos : SV_POSITION) {
+				return line_vert_raw(v, _Color, _PixelWidth, _LengthPadding, outpos);
+			}
+
+			half4 frag (line_v2f i, float4 screenPos : VPOS) : SV_Target {
+				UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
+				return i.col * float4(1,1,1, calculateLineAlpha(i, i.lineWidth, FalloffTextureScreenPixels));
+			}
+			ENDHLSL
+		}
+	}
+	Fallback Off
+}