Add a method to get the offset of a single component of a VertexFormat

[libs/gl.git] / source / vertexformat.h

diff --git a/source/vertexformat.h b/source/vertexformat.h
index 4dc780b225e843b9bba31af97375bb2114e02421..27033200f634ac00c2ba5c6fe7d89eebc5d9160d 100644 (file)
--- a/source/vertexformat.h
+++ b/source/vertexformat.h
@@ -46,6 +46,7 @@ struct VertexFormat
        const unsigned char *begin() const { return data ? data+1 : 0; }
        const unsigned char *end() const { return data ? data+1+data[0] : 0; }
        unsigned stride() const;
+       int offset(VertexComponent, unsigned = 0) const;
 };
 
 VertexFormat operator,(const VertexFormat &f, VertexComponent c);
@@ -59,7 +60,8 @@ inline VertexFormat operator,(VertexComponent c, unsigned i)
 inline unsigned get_stride(const VertexFormat &f)
 { return f.stride(); }
 
-std::istream &operator>>(std::istream &, VertexFormat &);
+void operator>>(const LexicalConverter &, VertexComponent &);
+void operator>>(const LexicalConverter &, VertexFormat &);
 
 } // namespace GL
 } // namespace Msp