A few fixes to GL interop support. (not yet working again)

bpl-subset @ 19b13cae

-Subproject commit fe17a8572ec0fe5bec36460f4e5ec712c269a502
+Subproject commit 19b13cae1f63e75dbf18b90020e4877639ab9f0e

doc/source/runtime.rst

@@ -710,6 +710,12 @@ with GL support. See :func:`have_gl`.
 
     Return *True* if PyOpenCL was compiled with OpenGL interoperability, otherwise *False*.
 
+.. function:: get_gl_sharing_context_properties()
+
+    Return a :class:`list` of :class:`context_properties` that will
+    allow a newly created context to share the currently active GL
+    context.
+
 .. function:: get_apple_cgl_share_group()
 
     Get share group handle for current CGL context.

examples/gl_interop_demo.py

@@ -24,9 +24,9 @@ def initialize():
     plats = cl.get_platforms()
 
     from pyopencl.tools import get_gl_sharing_context_properties
-    ctx = cl.Context(properties=props
-            [(ctx_props.PLATFORM, plats[0])]
-            + get_gl_sharing_context_properties())
+    ctx = cl.Context(properties=[
+        (cl.context_properties.PLATFORM, plats[0])]
+        + get_gl_sharing_context_properties())
 
     glClearColor(1, 1, 1, 1)
     glColor(0, 0, 1)