diff -r c1080cb5bd6d -r fbdeb3e04543 src/raytracer.cc
--- a/src/raytracer.cc	Tue Dec 18 12:36:01 2007 +0100
+++ b/src/raytracer.cc	Sat Dec 29 13:53:33 2007 +0100
@@ -59,7 +59,11 @@
 // P is point of intersection, N normal in this point
 Colour PhongShader_ambient(Material &mat, Vector3 &P)
 {
-	Colour col = mat.texture.colour; //mat.texture.evaluate(P);
+	Colour col;
+	if (mat.texture)
+		col = mat.texture->evaluate(P);
+	else
+		col = mat.colour;
 
 	// ambient
 	return mat.ambient * col;
@@ -80,7 +84,11 @@
 	Float L_dot_N = dot(L, N);
 	Float R_dot_V = dot(R, V);
 
-	Colour col = mat.texture.colour; //mat.texture.evaluate(P);
+	Colour col;
+	if (mat.texture)
+		col = mat.texture->evaluate(P);
+	else
+		col = mat.colour;
 
 	// diffuse
 	I = mat.diffuse * col * light.colour * L_dot_N;