iris: add support for GL_EXT_external_objects
This series implements the support for GL_EXT_external_objects
, that exposes two extensions: GL_EXT_memory_object
, which allows to import memory objects from Vulkan into OpenGL, and GL_EXT_semaphore
, which allows to import semaphores from Vulkan into OpenGL.
With them, we can share objects between anv and iris drivers.
Edited by Tapani Pälli