X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fmesh.cpp;h=45b022facc1edb8a673c4ea5e6d59485bff2b209;hb=55f24c84b7270e117615b212665f17d64771cede;hp=91dadeab00af09b584aaf1abad7b54333bbc7812;hpb=61ff840cd211f10d45dca8c4dad2cca5f68aaa42;p=libs%2Fgl.git

diff --git a/source/mesh.cpp b/source/mesh.cpp
index 91dadeab..45b022fa 100644
--- a/source/mesh.cpp
+++ b/source/mesh.cpp
@@ -1,6 +1,7 @@
 #include <msp/gl/extensions/arb_vertex_array_object.h>
 #include <msp/gl/extensions/arb_vertex_shader.h>
 #include "buffer.h"
+#include "error.h"
 #include "mesh.h"
 #include "renderer.h"
 
@@ -75,6 +76,9 @@ void Mesh::create_buffers()
 
 void Mesh::refresh() const
 {
+	if(!vbuf)
+		return;
+
 	vertices.refresh();
 	if(dirty)
 	{
@@ -152,6 +156,10 @@ void Mesh::set_winding(const WindingTest *w)
 
 void Mesh::draw() const
 {
+	const Mesh *cur = current();
+	if(cur && cur!=this)
+		throw invalid_operation("Mesh::draw");
+
 	refresh();
 
 	if(!current())