add a normal map property to Material.

2 files changed, 8 insertions, 0 deletions

diff --git a/graphics.h b/graphics.h
index 90a79dd..7eded0e 100644
--- a/graphics.h
+++ b/graphics.h
@@ -108,6 +108,7 @@ struct Material
 	Color specular;
 	double shininess;
 	Memimage *diffusemap;
+	Memimage *normalmap;
 };
 
 struct Primitive
diff --git a/scene.c b/scene.c
index 15d3cc0..c9c8d5c 100644
--- a/scene.c
+++ b/scene.c
@@ -180,6 +180,13 @@ loadobjmodel(Model *m, OBJ *obj)
 				mtl->diffusemap->data->ref++;
 			}
 
+			if(objmtl->norm != nil){
+				mtl->normalmap = allocmemimaged(objmtl->norm->r, objmtl->norm->chan, objmtl->norm->data);
+				if(mtl->normalmap == nil)
+					sysfatal("allocmemimaged: %r");
+				mtl->normalmap->data->ref++;
+			}
+
 			addmtlmap(&mtlmap, objmtl, m->nmaterials-1);
 		}