X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fvertexformat.h;h=3561292245fc640deb2859629cbf8f39c1776e5b;hp=7edca1f3dcf74782d8fd5a94c7bfb25cd079c72d;hb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;hpb=3b159edbe4e80a2bc19c4c2fcd42cb996b9fbfe0

diff --git a/source/vertexformat.h b/source/vertexformat.h
index 7edca1f3..35612922 100644
--- a/source/vertexformat.h
+++ b/source/vertexformat.h
@@ -6,9 +6,9 @@
 namespace Msp {
 namespace GL {
 
-/** A single vertex component.  Nvidia drivers have aliasing between the
-fixed-functions and generic vertex attributes, despite the standard not
-allowing it.  We use the same attribute indices here to avoid problems. */
+/** A single vertex component.  Symbolic names are provided for commonly used
+attributes.  These are aliased with with generic attributes, so be careful when
+picking your attribute indices. */
 enum VertexComponent
 {
 	VERTEX2 = 1,
@@ -44,6 +44,8 @@ public:
 
 	VertexFormat operator,(VertexComponent c) const;
 	VertexFormat operator,(unsigned i) const;
+	bool operator==(const VertexFormat &) const;
+	bool operator!=(const VertexFormat &other) const { return !(*this==other); }
 
 	bool empty() const { return !count; }
 	const unsigned char *begin() const { return components; }