Add outline pass

7 files changed, 66 insertions, 3 deletions

diff --git a/3ner.cginc b/3ner.cginc
index 0766380..07a66ad 100755
--- a/3ner.cginc
+++ b/3ner.cginc
@@ -24,6 +24,9 @@ v2f vert(appdata v) {
 #if defined(SHADOW_CASTER_PASS) && !defined(_SHADOW_CASTER)
   return (v2f) asfloat(-1);
 #endif
+#if defined(OUTLINES_PASS) && !defined(_OUTLINES)
+  return (v2f) asfloat(-1);
+#endif
 
   v2f o;
   UNITY_SETUP_INSTANCE_ID(v);
@@ -33,6 +36,11 @@ v2f vert(appdata v) {
 
   impostor_vert(v.vertex.xyz);
 
+#if defined(OUTLINES_PASS) && defined(_OUTLINES)
+  float thickness = _Outlines_Thickness.SampleLevel(point_repeat_s, v.uv0, 0).r;
+  v.vertex.xyz += v.normal * _Outlines_Width * thickness;
+#endif
+
 #if defined(_VERTEX_DEFORMATION) && ( \
         defined(_VERTEX_DEFORMATION_FRAGMENT_NORMALS) || \
         defined(_VERTEX_DEFORMATION_TESSELLATION)) || \
diff --git a/3ner.shader b/3ner.shader
index d08f2c7..6735229 100755
--- a/3ner.shader
+++ b/3ner.shader
@@ -94,6 +94,15 @@ Shader "yum_food/3ner"
         [HideInInspector] m_end_Wrapped_Lighting("Wrapped Lighting", Float) = 0
         //endex
 
+        //ifex _Outlines_Enabled==0
+        [HideInInspector] m_start_Outlines("Outlines", Float) = 0
+          [ThryToggle(_OUTLINES)] _Outlines_Enabled("Enable", Float) = 0
+          _Outlines_Color("Color", Color) = (1, 1, 1, 1)
+          _Outlines_Width("Width", Range(0, 1)) = 0.01
+          _Outlines_Thickness("Thickness", 2D) = "white" {}
+        [HideInInspector] m_end_Outlines("Outlines", Float) = 0
+        //endex
+
       [HideInInspector] m_end_Main("Main", Float) = 0
 
       [HideInInspector] m_start_Gimmicks("Gimmicks", Float) = 0
@@ -585,6 +594,38 @@ Shader "yum_food/3ner"
       #include "3ner.cginc"
       ENDCG
     }
+    //ifex _Outlines_Enabled==0
+    Pass {
+      Name "OUTLINES"
+      Tags { "LightMode" = "ForwardBase" }
+      BlendOp [_BlendOp], [_BlendOpAlpha]
+      Blend [_SrcBlend] [_DstBlend], [_SrcBlendAlpha] [_DstBlendAlpha]
+      Cull Front
+      ZWrite [_ZWrite]
+      ZTest [_ZTest]
+
+      CGPROGRAM
+      #pragma target 5.0
+      #pragma multi_compile_fwdbase
+      #pragma multi_compile_fullshadows
+      #pragma multi_compile_instancing
+      #pragma multi_compile_fog
+      #pragma vertex vert
+      //ifex _Geometry_Enabled==0
+      #pragma geometry geom
+      //endex
+      //ifex _Tessellation_Enabled==0
+      #pragma hull hull
+      #pragma domain domain
+      //endex
+      #pragma fragment frag
+
+      #define OUTLINES_PASS
+
+      #include "3ner.cginc"
+      ENDCG
+    }
+    //endex
     Pass {
       Name "ADDITIVE"
       Tags { "LightMode" = "ForwardAdd" }
diff --git a/brdf.cginc b/brdf.cginc
index 47f3ccc..0e1cc02 100755
--- a/brdf.cginc
+++ b/brdf.cginc
@@ -153,7 +153,7 @@ float4 brdf(Pbr pbr, LightData data) {
   }
 
   // Indirect
-#if !defined(FURNACE_TEST_DIRECT) && defined(FORWARD_BASE_PASS)
+#if !defined(FURNACE_TEST_DIRECT) && (defined(FORWARD_BASE_PASS) || defined(OUTLINES_PASS))
   {
     float3 specular_dfg = dfg.xxx * f0_color + dfg.yyy;  // filament 5.3.4.6
     float3 indirect_specular = data.indirect.specular * specular_dfg;
diff --git a/features.cginc b/features.cginc
index d7e81e9..4ad5c88 100755
--- a/features.cginc
+++ b/features.cginc
@@ -27,6 +27,10 @@
 #pragma shader_feature_local _WRAPPED_LIGHTING
 //endex
 
+//ifex _Outlines_Enabled==0
+#pragma shader_feature_local _OUTLINES
+//endex
+
 //ifex _Bent_Normals_Enabled==0
 #pragma shader_feature_local _BENT_NORMALS
 //endex
diff --git a/globals.cginc b/globals.cginc
index d3b2a87..3dcb0ea 100755
--- a/globals.cginc
+++ b/globals.cginc
@@ -32,6 +32,12 @@ float _Specular_AA_Variance;
 float _Specular_AA_Threshold;
 float _BRDF_Specular_Min_Denom;
 
+#if defined(_OUTLINES)
+float4 _Outlines_Color;
+float _Outlines_Width;
+texture2D _Outlines_Thickness;
+#endif  // _OUTLINES
+
 #if defined(_BRIGHTNESS_CLAMP)
 float _Brightness_Clamp_Min;
 float _Brightness_Clamp_Max;
diff --git a/lighting.cginc b/lighting.cginc
index f39d866..51b0c8f 100755
--- a/lighting.cginc
+++ b/lighting.cginc
@@ -186,7 +186,7 @@ float3 yumSH9(float4 n, float3 worldPos, inout LightIndirect light) {
 float4 getIndirectDiffuse(v2f i, Pbr pbr, inout LightIndirect light) {
   float4 diffuse = 0;
 
-#if defined(FORWARD_BASE_PASS)
+#if defined(FORWARD_BASE_PASS) || defined(OUTLINES_PASS)
 #if defined(_BENT_NORMALS)
   diffuse.xyz += max(0, yumSH9(float4(pbr.bent_normal, 1.0), i.worldPos, light));
 #else
@@ -194,7 +194,7 @@ float4 getIndirectDiffuse(v2f i, Pbr pbr, inout LightIndirect light) {
 #endif
 #endif
 
-#if defined(_BRIGHTNESS_CLAMP) && defined(FORWARD_BASE_PASS)
+#if defined(_BRIGHTNESS_CLAMP) && (defined(FORWARD_BASE_PASS) || defined(OUTLINES_PASS))
   float3 diffuse_hsv = RGBtoHSV(diffuse.xyz);
   diffuse_hsv.z = clamp(diffuse_hsv.z, _Brightness_Clamp_Min, _Brightness_Clamp_Max);
   diffuse.xyz = HSVtoRGB(diffuse_hsv);
diff --git a/pbr.cginc b/pbr.cginc
index 4389476..c89a97c 100755
--- a/pbr.cginc
+++ b/pbr.cginc
@@ -196,9 +196,13 @@ Pbr getPbr(v2f i) {
 #if defined(_IMPOSTORS_DEPTH)
   pbr.objPos = imp.objPos;
 #endif
+#else  // !_IMPOSTORS
+#if defined(OUTLINES_PASS) && defined(_OUTLINES)
+  pbr.albedo = _Outlines_Color;
 #else
   pbr.albedo = _MainTex.Sample(aniso4_trilinear_repeat_s, uv_parallax * _MainTex_ST.xy + _MainTex_ST.zw);
   pbr.albedo *= _Color;
+#endif
   apply_marble(i.worldPos, pbr.albedo.xyz);
 
   float3 normal_tangent = UnpackNormal(_BumpMap.Sample(aniso4_trilinear_repeat_s, uv_parallax * _BumpMap_ST.xy));