add machinery for multiple uv channels

1 files changed, 6 insertions, 2 deletions

diff --git a/3ner.cginc b/3ner.cginc
index 08bb7cd..da04aba 100644
--- a/3ner.cginc
+++ b/3ner.cginc
@@ -30,7 +30,10 @@ v2f vert(appdata v) {
 #if defined(_TESSELLATION)
   o.tpos = v.vertex;
 #endif
-  o.uv0 = v.uv0;
+  o.uv01.xy = v.uv0;
+  o.uv01.zw = v.uv1;
+  o.uv23.xy = v.uv2;
+  o.uv23.zw = v.uv3;
   o.objPos = v.vertex;
 #if defined(_VERTEX_DEFORMATION_FRAGMENT_NORMALS) || defined(_VERTEX_DEFORMATION_TESSELLATION)
   o.objPos_orig = v.vertex;
@@ -160,7 +163,8 @@ v2f domain(
   patch[1].fieldName * baryc.y + \
   patch[2].fieldName * baryc.z
 
-  o.uv0      = DOMAIN_INTERP(uv0);
+  o.uv01      = DOMAIN_INTERP(uv01);
+  o.uv23      = DOMAIN_INTERP(uv23);
 #if defined(_TESSELLATION)
   o.objPos   = DOMAIN_INTERP(tpos);
 #else