i965,iris/blorp: do not blit 0-sizes
Seems there is no sense in blitting 0-sized sources or destinations. Additionaly it may cause segfaults for i965.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110239 CC: Jason Ekstrand jason.ekstrand@intel.com CC: Lionel G Landwerlin lionel.g.landwerlin@intel.com CC: Kenneth Graunke kenneth@whitecape.org Signed-off-by: Sergii Romantsov sergii.romantsov@globallogic.com
Edited by Yevhenii Kolesnikov