Comparison with a signed expression and unsigned value is converted to unsigned value, reason for minus value is interpreted as a big unsigned value. For this case the "for" loop is going into unexpected behavior.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38109 Signed-off-by: Marius Predut <marius.pre...@intel.com> --- src/mesa/tnl_dd/t_dd_dmatmp.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/mesa/tnl_dd/t_dd_dmatmp.h b/src/mesa/tnl_dd/t_dd_dmatmp.h index 7be3954..88ecc78 100644 --- a/src/mesa/tnl_dd/t_dd_dmatmp.h +++ b/src/mesa/tnl_dd/t_dd_dmatmp.h @@ -627,6 +627,8 @@ static void TAG(render_quads_verts)( struct gl_context *ctx, LOCAL_VARS; GLuint j; + if(count%4 != 0) return; + INIT(GL_TRIANGLES); for (j = start; j < count-3; j += 4) { @@ -1248,7 +1250,7 @@ static GLboolean TAG(validate_render)( struct gl_context *ctx, ok = (GLint) count < GET_SUBSEQUENT_VB_MAX_ELTS(); } else { - ok = HAVE_TRIANGLES; /* flatshading is ok. */ + ok = HAVE_TRIANGLES && (count%4 == 0); /* flatshading is ok. */ } break; default: -- 1.9.1 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
