Add fur shader, and begin slimming interpolators

1 files changed, 47 insertions, 4 deletions

diff --git a/2ner.cginc b/2ner.cginc
index a4ef84a..714930f 100644
--- a/2ner.cginc
+++ b/2ner.cginc
@@ -193,7 +193,6 @@ v2f vert(appdata v) {
   // These are used to convert normals from tangent space to world space.

   o.normal = v.normal;

   o.tangent = v.tangent.xyz;

-  o.binormal = cross(o.normal, o.tangent) * v.tangent.w;

 

   UNITY_TRANSFER_LIGHTING(o, v.uv1);

   UNITY_TRANSFER_FOG_COMBINED_WITH_EYE_VEC(o, o.pos);

@@ -202,8 +201,10 @@ v2f vert(appdata v) {
 	TRANSFER_SHADOW_CASTER_NORMALOFFSET(o);

 #endif

 

+#if defined(V2F_COLOR)

   // Vertex color

   o.color = v.color;

+#endif

 

   // Calculate vertex lights

   #ifdef VERTEXLIGHT_ON

@@ -225,6 +226,50 @@ v2f vert(appdata v) {
   return o;

 }

 

+//ifex _Fur_Enabled==0

+[maxvertexcount(3 * 9)]

+void geom(triangle v2f input[3], inout TriangleStream<v2f> stream) {

+#if defined(_FUR)

+#if defined(_FUR_MASK)

+  float fur_mask = _Fur_Mask.SampleLevel(bilinear_repeat_s, input[0].uv01.xy * _Fur_Mask_ST.xy, 0);

+#else

+  float fur_mask = 1;

+#endif

+  [branch]

+  if (fur_mask < 0.5) {

+    stream.Append(input[0]);

+    stream.Append(input[1]);

+    stream.Append(input[2]);

+    stream.RestartStrip();

+    return;

+  }

+

+  [loop]

+  for (int layer = 0; layer < _Fur_Layers; layer++) {

+    float t = (float) layer / (float) max(_Fur_Layers - 1, 1);

+    float offset = t * _Fur_Thickness;

+

+    [unroll]

+    for (int i = 0; i < 3; i++) {

+      v2f o = input[i];

+      float3 normal_ws = UnityObjectToWorldNormal(o.normal);

+      o.worldPos.xyz += normal_ws * offset;

+      o.objPos.xyz += o.normal * offset;

+      o.pos = UnityWorldToClipPos(o.worldPos);

+      o.vertexLight.w = layer;

+      stream.Append(o);

+    }

+    stream.RestartStrip();

+  }

+#else

+  stream.Append(input[0]);

+  stream.Append(input[1]);

+  stream.Append(input[2]);

+  stream.RestartStrip();

+#endif  // _FUR

+}

+//endex

+

 float4 frag(v2f i, uint facing : SV_IsFrontFace

 #if defined(_HARNACK_TRACING) || defined(_SHATTER_WAVE) || defined(_VERTEX_DOMAIN_WARPING) || (defined(_CUSTOM30) && !defined(_DEPTH_PREPASS)) || defined(_RAYMARCHED_FOG) || defined(_TESSELLATION_HEIGHTMAP)

   , out float depth : SV_DepthLessEqual

@@ -242,12 +287,10 @@ float4 frag(v2f i, uint facing : SV_IsFrontFace
   i.normal *= facing ? 1 : -1;

   i.normal = UnityObjectToWorldNormal(i.normal);

   i.tangent = mul(unity_ObjectToWorld, i.tangent);

-  i.binormal = mul(unity_ObjectToWorld, i.binormal);

 

   // Not necessarily normalized after interpolation

   i.normal = normalize(i.normal);

   i.tangent = normalize(i.tangent);

-  i.binormal = normalize(i.binormal);

 

 #if defined(_RAYMARCHED_FOG)

   {

@@ -385,7 +428,7 @@ float4 frag(v2f i, uint facing : SV_IsFrontFace
 

   float4x4 tangentToWorld = float4x4(

     float4(i.tangent, 0),

-    float4(i.binormal, 0),

+    float4(cross(i.tangent, i.normal), 0),

     float4(i.normal, 0),

     float4(0, 0, 0, 1)

   );