Allow generic vertex attribute 0, since OpenGL 3.0 does not support any fixed-functio...

[libs/gl.git] / source / vertexarraybuilder.cpp

diff --git a/source/vertexarraybuilder.cpp b/source/vertexarraybuilder.cpp
index 8e7e2cb5dd4433625747545cea073fee6715e89c..09b0a1f2a85655e21e3f87b15525a7f8ac87d756 100644 (file)
--- a/source/vertexarraybuilder.cpp
+++ b/source/vertexarraybuilder.cpp
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2007-2009  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
@@ -26,7 +26,8 @@ void VertexArrayBuilder::vertex_(float x, float y, float z, float w)
        for(const unsigned char *c=array.get_format().begin(); c!=array.get_format().end(); ++c)
        {
                uint size=(*c&3)+1;
-               switch(*c>>2)
+               uint type=*c>>2;
+               switch(type)
                {
                case 0:
                        *ptr++=x;
@@ -64,7 +65,7 @@ void VertexArrayBuilder::vertex_(float x, float y, float z, float w)
                        }
                        break;
                default:
-                       const Attrib &a=av[(*c>>2)-4];
+                       const Attrib &a=av[type-4];
                        *ptr++=a.x;
                        if(size>=2) *ptr++=a.y;
                        if(size>=3) *ptr++=a.z;