X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fshadowmap.cpp;h=91c056fe147cc4c994100b5a1aa1e2ec8534c730;hb=fa5b232a16e11d7950e80764497f0167ec9e3b41;hp=c4dd07b03dbdb288fa55bda158dc305386813d70;hpb=db735acce6c9409fabcab80d87930263032af47c;p=libs%2Fgl.git

diff --git a/source/shadowmap.cpp b/source/shadowmap.cpp
index c4dd07b0..91c056fe 100644
--- a/source/shadowmap.cpp
+++ b/source/shadowmap.cpp
@@ -80,15 +80,10 @@ void ShadowMap::setup_frame() const
 	{
 		/* XXX Not really proper way to support positional lights, but good
 		enough when the light source is far away */
-		lpos.x -= target.x;
-		lpos.y -= target.y;
-		lpos.z -= target.z;
+		lpos -= Vector4(target.x, target.y, target.z, 1.0f);
 	}
 
-	float l = sqrt(lpos.x*lpos.x+lpos.y*lpos.y+lpos.z*lpos.z);
-	lpos.x /= l;
-	lpos.y /= l;
-	lpos.z /= l;
+	lpos.normalize();
 
 	float matrix[16];
 	if(abs(lpos.z)>=abs(lpos.x) && abs(lpos.z)>=abs(lpos.y))
@@ -149,7 +144,7 @@ void ShadowMap::render(Renderer &renderer, const Tag &tag) const
 	if(!enabled_passes.count(tag))
 		return renderer.render(renderable, tag);
 
-	const double *matrix = light_matrix.data();
+	const float *matrix = light_matrix.data();
 
 	// Has side effect of changing the current unit
 	depth_buf.bind_to(unit);