[jitter] Bug report: jit.gl.slab not able to change context

Summary:

jit.gl.slab do not seem able to change to another context than what it 
was instantiated with.

Steps to Reproduce:

1) Open the patch below.
2) Start qmetro.

Result:
You get a white jit.window. Not surprising really, as jit.gl.slab is set 
to draw to another context ("bar") than the one that is rendered ("fa").

4) Change drawinf context for jit.gl.slab by clicking the "drawto fa" 
message box.

Expected result:
jit.gl.slab should now draw to the proper context, and images be seen.

Actual result:
The window remains white.

5) Try reloading the slab by clicking the "read co.additive.jxs" message 
box.

Result:
Nothing

6) Click the "getparamlist" message box

Result:
Nothing is reported to the Max window.

7) Recreate the jit.gl.slab object by changing the "bar" argument for "fa".

Result: Only now the slab start working.


Regression:
Max 4.6.3, Jitter 1.6.3.
Max OSX 10.4.10
2.33 GHz Intel Core 2 Duo MacBookPro


Am I missing something, or is there a problem here?

Thanks,
Trond





#P window setfont "Sans Serif" 9.;
#P window linecount 1;
#P newex 158 59 32 196617 sel 1;
#P message 158 86 102 196617 read countdown.mov;
#P message 317 86 82 196617 read dishes.mov;
#P message 27 196 100 196617 read co.additive.jxs;
#P message 37 215 54 196617 drawto fa;
#P newex 317 127 144 196617 jit.qt.movie 320 240;
#P flonum 239 160 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 239 182 57 196617 amount \$1;
#P newex 238 200 76 196617 prepend param;
#P newex 342 276 32 196617 print;
#P message 168 202 67 196617 getparamlist;
#P newex 21 145 70 196617 jit.window fa;
#P newex 158 276 182 196617 jit.gl.videoplane fa @scale 1.333 1. 1.;
#P newex 21 123 121 196617 jit.gl.render fa @ortho 2;
#P newex 21 79 58 196617 t b b erase;
#P newex 158 249 169 196617 jit.gl.slab bar @file co.additive.jxs;
#P toggle 21 37 15 0;
#P newex 21 58 51 196617 qmetro 2;
#P newex 158 127 144 196617 jit.qt.movie 320 240;
#P comment 177 161 62 196617 mix amount;
#P connect 3 0 2 0;
#P connect 2 0 5 0;
#P connect 5 0 6 0;
#P fasten 5 2 6 0 74 105 26 105;
#P fasten 3 0 19 0 26 55 163 55;
#P connect 19 0 18 0;
#P connect 18 0 1 0;
#P fasten 5 1 1 0 50 117 163 117;
#P fasten 11 0 4 0 243 223 163 223;
#P connect 1 0 4 0;
#P fasten 9 0 4 0 173 223 163 223;
#P fasten 15 0 4 0 42 239 163 239;
#P fasten 16 0 4 0 32 239 163 239;
#P connect 4 0 7 0;
#P connect 12 0 11 0;
#P connect 13 0 12 0;
#P connect 14 0 4 1;
#P fasten 19 0 17 0 163 81 322 81;
#P connect 17 0 14 0;
#P fasten 5 1 14 0 50 117 322 117;
#P fasten 4 1 10 0 322 271 347 271;
#P window clipboard copycount 20;