vrend: effectively revert "renderer: remove dead code"
d9a4be4d broke a number of tests when running on a GLES host because tgsitargettogltarget may return PIPE_BUFFER which is 0. So, instead of simply reverting the commit make it more explicit that we check for PIPE_BUFFER to make it clearer that this condition may actually trigger.
Signed-off-by: Gert Wollny gert.wollny@collabora.com
Edited by Gert Wollny