Henry, Thanks for the fast and helpful reply. The problem was that I’m using an isigraph and need to wait for a system-generated “paint” event—I had no business calling my paint routine directly from the timer callback. It’s actually a minor miracle that it worked at all. Changing the callback to invalidate the isigraph control (and do nothing else) fixed the problem. (And I am in fact getting 30 fps despite thousands of gl2 calls per frame. Kudos to the appropriate developers.)
Thanks again. Ed > On Mar 8, 2023, at 2:17 PM, Henry Rich <henryhr...@gmail.com> wrote: > > The mouseMove handler would have the form selected. Perhaps you need to > select the form, and glselect the isigraph, inside your timer? > > paint_base_ '' > > is the preferable way to change locales. > > Henry Rich > > On 3/8/2023 2:45 PM, Ed Gottsman wrote: >> Hello. I’ve got a timer firing a callback routine (in the z locale, of >> course) that in turn needs to call a paint routine in the base locale. I’ve >> tried >> >> sys_timer_z_ =: 3 : 0 >> cocurrent <‘base' >> paint ‘' >> ) >> >> …as well as >> >> sys_timer_z_ =: 3 : 0 >> paint_base_ '' >> ) >> >> Both work, actually, in that they call paint…except: >> >> The paint routine makes a series of gl2 calls. All of them work, too. The >> only problem is that the first gl2 call (it doesn’t seem to matter what gl2 >> routine is being called) prints: >> >> |domain error: chkgl2 >> | glfill 255 255 255 255 >> >> …to the terminal. (In this case, the first call was to glfill.). This would >> not be a serious problem except that I’m doing animation and shooting for 30 >> fps. Flooding the terminal with spurious gl2 errors will make other debug >> output difficult to find. >> >> Note that I call the same paint routine from a mouseMove event handler >> (interim solution)—in which case no gl2 error message is printed. That’s >> why I wonder about locales and the timer. >> >> Am I missing something obvious? >> >> Thanks. >> >> Ed >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
