X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Frender%2Finstancearray.cpp;h=293fa6cdad8e1ee55384df261a50f22b58997a25;hp=427976129d65b1a4e5f0c82caf725822111a44b7;hb=d493917dbc215cd6ba3f8773a52a289d9f14380d;hpb=a3cc9f4469153396c7ad0868f3cbb2d2f698d710

diff --git a/source/render/instancearray.cpp b/source/render/instancearray.cpp
index 42797612..293fa6cd 100644
--- a/source/render/instancearray.cpp
+++ b/source/render/instancearray.cpp
@@ -110,9 +110,9 @@ void InstanceArray::update_instance_matrix(unsigned index)
 
 	const Matrix &m = *instances[index]->get_matrix();
 
-	float *d = instance_data->modify(instances.size()-1);
+	float *d = reinterpret_cast<float *>(instance_data->modify(instances.size()-1)+matrix_offset);
 	for(unsigned i=0; i<12; ++i)
-		d[matrix_offset+i] = m(i/4, i%4);
+		d[i] = m(i/4, i%4);
 }
 
 void InstanceArray::render(Renderer &renderer, Tag tag) const