From 5fa75a6d4b03c676112ca04cf5ff3f3ccd2f0fee Mon Sep 17 00:00:00 2001
From: rodri <rgl@antares-labs.eu>
Date: Tue, 28 May 2024 16:56:31 +0000
Subject: add a normal map property to Material.

---
 graphics.h | 1 +
 scene.c    | 7 +++++++
 2 files changed, 8 insertions(+)

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);
 		}
 
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