diff options
Diffstat (limited to 'source/blender/nodes/intern/SHD_nodes/SHD_geom.c')
| -rw-r--r-- | source/blender/nodes/intern/SHD_nodes/SHD_geom.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/source/blender/nodes/intern/SHD_nodes/SHD_geom.c b/source/blender/nodes/intern/SHD_nodes/SHD_geom.c index 3875dead2b0..b15aa6802f3 100644 --- a/source/blender/nodes/intern/SHD_nodes/SHD_geom.c +++ b/source/blender/nodes/intern/SHD_nodes/SHD_geom.c @@ -41,6 +41,7 @@ static bNodeSocketType sh_node_geom_out[]= { { SOCK_VECTOR, 0, "UV", 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f}, { SOCK_VECTOR, 0, "Normal", 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f}, { SOCK_RGBA, 0, "Vertex Color", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f}, + { SOCK_VALUE, 0, "Front/Back", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f}, { -1, 0, "" } }; @@ -52,6 +53,7 @@ static void node_shader_exec_geom(void *data, bNode *node, bNodeStack **in, bNod NodeGeometry *ngeo= (NodeGeometry*)node->storage; ShadeInputUV *suv= &shi->uv[0]; static float defaultvcol[4] = {1.0f, 1.0f, 1.0f, 1.0f}; + static float front= 0.0; int i; if(ngeo->uvname[0]) { @@ -105,6 +107,15 @@ static void node_shader_exec_geom(void *data, bNode *node, bNodeStack **in, bNod out[GEOM_OUT_NORMAL]->data= shi->dxno; out[GEOM_OUT_NORMAL]->datatype= NS_OSA_VECTORS; } + + /* front/back + * check the original un-flipped normals to determine front or back side */ + if (shi->orignor[2] < FLT_EPSILON) { + front= 1.0f; + } else { + front = 0.0f; + } + out[GEOM_OUT_FRONTBACK]->vec[0]= front; } } |