From 94a020cfe6cb1da04695897eed38b530af31f524 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Mon, 21 Sep 2009 16:54:35 -0600 Subject: vbo: added comment about max array index --- src/mesa/vbo/vbo_exec_array.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/mesa/vbo/vbo_exec_array.c') diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c index ee37eeb937..668dc6eb24 100644 --- a/src/mesa/vbo/vbo_exec_array.c +++ b/src/mesa/vbo/vbo_exec_array.c @@ -678,6 +678,12 @@ vbo_exec_DrawRangeElementsBaseVertex(GLenum mode, type, indices, basevertex )) return; + /* NOTE: It's important that 'end' is a reasonable value. + * in _tnl_draw_prims(), we use end to determine how many vertices + * to transform. If it's too large, we can unnecessarily split prims + * or we can read/write out of memory in several different places! + */ + if (end >= ctx->Array.ArrayObj->_MaxElement) { /* the max element is out of bounds of one or more enabled arrays */ _mesa_warning(ctx, "glDraw[Range]Elements(start %u, end %u, count %d, " -- cgit v1.2.3