X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fscene.cpp;h=b8a74b59be7f3c6be74c85a179994c07345755ae;hb=3b159edbe4e80a2bc19c4c2fcd42cb996b9fbfe0;hp=1625ca32c7c74052cdec47cdf10f741d26115f12;hpb=d16abe533233dc15810fe6bdf4a873d36eefc5dc;p=libs%2Fgl.git

diff --git a/source/scene.cpp b/source/scene.cpp
index 1625ca32..b8a74b59 100644
--- a/source/scene.cpp
+++ b/source/scene.cpp
@@ -66,11 +66,15 @@ bool Scene::frustum_cull(const Renderable &renderable) const
 		return false;
 
 	Vector4 center = culling_matrix*(*matrix*compose(bsphere->get_center(), 1.0f));
-	float radius = bsphere->get_radius();
+	Vector4 x_axis = *matrix*Vector4(bsphere->get_radius(), 0.0f, 0.0f, 0.0f);
+	float radius_sq = inner_product(x_axis, x_axis);
 
 	for(unsigned i=0; i<6; ++i)
-		if(inner_product(center, frustum_edges[i])>radius)
+	{
+		float distance = inner_product(center, frustum_edges[i]);
+		if(distance>0 && distance*distance>radius_sq)
 			return true;
+	}
 
 	return false;
 }