Use glFinish to replace glFlush (#1102)

In OpenCL spec 1.1:
"Prior to calling clEnqueueAcquireGLObjects, the application must ensure that any pending GL
operations which access the objects specified in mem_objects have completed. This may be
accomplished portably by issuing and waiting for completion of a glFinish command on all GL
contexts with pending references to these objects."

Signed-off-by: Alex Xie <>
2 files changed