Add sdf mode to decals

3 files changed, 74 insertions, 0 deletions

diff --git a/3ner.shader b/3ner.shader
index 11bc32f..31504e0 100755
--- a/3ner.shader
+++ b/3ner.shader
@@ -99,6 +99,14 @@ Shader "yum_food/3ner"
               _Decal0_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal0_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal0_SDF_Enabled==0
+            [HideInInspector] m_start_Decal0_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL0_SDF)] _Decal0_SDF_Enabled("Enable", Float) = 0
+              _Decal0_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL0_SDF_INVERT)] _Decal0_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal0_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal0("Decal 0", Float) = 0
           //endex
 
@@ -135,6 +143,14 @@ Shader "yum_food/3ner"
               _Decal1_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal1_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal1_SDF_Enabled==0
+            [HideInInspector] m_start_Decal1_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL1_SDF)] _Decal1_SDF_Enabled("Enable", Float) = 0
+              _Decal1_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL1_SDF_INVERT)] _Decal1_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal1_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal1("Decal 1", Float) = 0
           //endex
 
@@ -171,6 +187,14 @@ Shader "yum_food/3ner"
               _Decal2_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal2_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal2_SDF_Enabled==0
+            [HideInInspector] m_start_Decal2_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL2_SDF)] _Decal2_SDF_Enabled("Enable", Float) = 0
+              _Decal2_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL2_SDF_INVERT)] _Decal2_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal2_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal2("Decal 2", Float) = 0
           //endex
 
@@ -207,6 +231,14 @@ Shader "yum_food/3ner"
               _Decal3_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal3_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal3_SDF_Enabled==0
+            [HideInInspector] m_start_Decal3_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL3_SDF)] _Decal3_SDF_Enabled("Enable", Float) = 0
+              _Decal3_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL3_SDF_INVERT)] _Decal3_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal3_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal3("Decal 3", Float) = 0
           //endex
 
@@ -243,6 +275,14 @@ Shader "yum_food/3ner"
               _Decal4_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal4_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal4_SDF_Enabled==0
+            [HideInInspector] m_start_Decal4_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL4_SDF)] _Decal4_SDF_Enabled("Enable", Float) = 0
+              _Decal4_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL4_SDF_INVERT)] _Decal4_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal4_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal4("Decal 4", Float) = 0
           //endex
 
@@ -279,6 +319,14 @@ Shader "yum_food/3ner"
               _Decal5_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal5_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal5_SDF_Enabled==0
+            [HideInInspector] m_start_Decal5_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL5_SDF)] _Decal5_SDF_Enabled("Enable", Float) = 0
+              _Decal5_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL5_SDF_INVERT)] _Decal5_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal5_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal5("Decal 5", Float) = 0
           //endex
 
@@ -315,6 +363,14 @@ Shader "yum_food/3ner"
               _Decal6_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal6_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal6_SDF_Enabled==0
+            [HideInInspector] m_start_Decal6_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL6_SDF)] _Decal6_SDF_Enabled("Enable", Float) = 0
+              _Decal6_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL6_SDF_INVERT)] _Decal6_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal6_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal6("Decal 6", Float) = 0
           //endex
 
@@ -351,6 +407,14 @@ Shader "yum_food/3ner"
               _Decal7_Rotation("Rotation", Range(-0.5, 0.5)) = 0
             [HideInInspector] m_end_Decal7_Rotation("Rotation", Float) = 0
             //endex
+
+            //ifex _Decal7_SDF_Enabled==0
+            [HideInInspector] m_start_Decal7_SDF("SDF", Float) = 0
+              [ThryToggle(_DECAL7_SDF)] _Decal7_SDF_Enabled("Enable", Float) = 0
+              _Decal7_SDF_Threshold("Threshold", Range(0, 1)) = 0.5
+              [ThryToggle(_DECAL7_SDF_INVERT)] _Decal7_SDF_Invert("Invert", Float) = 0
+            [HideInInspector] m_end_Decal7_SDF("SDF", Float) = 0
+            //endex
           [HideInInspector] m_end_Decal7("Decal 7", Float) = 0
           //endex
         [HideInInspector] m_end_Decals("Decals", Float) = 0
diff --git a/decal.cginc b/decal.cginc
index 069a42f..10b2f7a 100644
--- a/decal.cginc
+++ b/decal.cginc
@@ -35,6 +35,13 @@ float2 decal_rotate(float2 uv, float rotation) {
     uv -= _Decal##N##_MainTex_ST.zw; \
     uv *= _Decal##N##_MainTex_ST.xy; \
     float4 albedo = decal_sample(_Decal##N##_MainTex, uv, _Decal##N##_UV_Mode); \
+    if (_Decal##N##_SDF_Enabled) { \
+      float sd = _Decal##N##_SDF_Invert ? 1 - albedo.r : albedo.r; \
+      float d = sd - _Decal##N##_SDF_Threshold; \
+      float w = fwidth(d) * 0.5; \
+      albedo.rgb = sd; \
+      albedo.a = smoothstep(-w, w, d); \
+    } \
     albedo *= _Decal##N##_Color; \
     albedo.a *= _Decal##N##_Opacity; \
     if (_Decal##N##_Mask_Enabled) { \
diff --git a/globals.cginc b/globals.cginc
index c3ac36c..1886a8c 100755
--- a/globals.cginc
+++ b/globals.cginc
@@ -265,6 +265,9 @@ float _Parallax_Heightmap_Ray_Marching_Steps;
   int _Decal##N##_Mask_UV_Channel; \
   float _Decal##N##_Mask_Invert; \
   float _Decal##N##_Albedo_Clamp; \
+  float _Decal##N##_SDF_Enabled; \
+  float _Decal##N##_SDF_Threshold; \
+  float _Decal##N##_SDF_Invert; \
   float _Decal##N##_Metallic_Gloss_Enabled; \
   texture2D _Decal##N##_Metallic_Gloss; \
   float4 _Decal##N##_Metallic_Gloss_ST;