add pre-render callback list for compositor canvas
authorMike Blumenkrantz <zmike@osg.samsung.com>
Thu, 17 Sep 2015 20:32:49 +0000 (16:32 -0400)
committerMike Blumenkrantz <zmike@osg.samsung.com>
Thu, 17 Sep 2015 20:54:00 +0000 (16:54 -0400)
commitbff9ae5feb2709bc3d416f6b6e6a07b1e2f3c487
tree59a855b1756d34547d7126795a1f55dc6dc3eba4
parenta99bc68baacb55420be0aed11bab6900150b16b6
add pre-render callback list for compositor canvas

someone doing fancy effects might want to add a callback to do various
tasks only when a render is about to occur
src/bin/e_comp.h
src/bin/e_comp_canvas.c