vbo: tweak out-of-bounds VBO access error message

Subtract 1 from _MaxElement to be clearer.

diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c
index 2815ba3..cd0397a 100644 (file)
--- a/src/mesa/vbo/vbo_exec_array.c
+++ b/src/mesa/vbo/vbo_exec_array.c
@@ -366,7 +366,7 @@ vbo_exec_DrawRangeElements(GLenum mode,
       _mesa_warning(ctx, "glDraw[Range]Elements(start %u, end %u, count %d, "
                     "type 0x%x) index=%u is out of bounds (max=%u)",
                     start, end, count, type, end,
-                    ctx->Array.ArrayObj->_MaxElement);
+                    ctx->Array.ArrayObj->_MaxElement - 1);
       if (0)
          _mesa_print_arrays(ctx);
       return;