This is in relation to the following two threads for background info:
<a href="http://community.roll20.net/discussion/469/zooming-in-firefox-breaks-fog-of-war" rel="nofollow">http://community.roll20.net/discussion/469/zooming-in-firefox-breaks-fog-of-war</a>
<a href="http://community.roll20.net/discussion/377/max-table-size/" rel="nofollow">http://community.roll20.net/discussion/377/max-table-size/</a>
Basically, people are using Roll20 to create map sizes that are much, much larger than I anticipated. Roll20 doesn't have any inherent limit to the size of the map (it will gladly attempt to render a 500 in. x 500 in. "tabletop"), but browsers apparently choke when you attempt to create canvases that are larger than a certain size. The size (unfortunately) seems to be completely dependent upon the individual computer that the browser is running on (probably due to memory contraints). So, for example, on my development laptop, which has 8 GB of RAM, I can create a 200x200 in. page and still have both grid and fog of war. However, in a Windows 7 virtual machine with only 2 GB of RAM (and 32-bit, not 64-bit), I can't reliably create anything larger than 50 in. x 50 in. And to add on even more madness, you also have to take into account your *player's* computers. Because if the canvas "crashes", unfortunately what happens is you lose fog of war and the grid, causing everything to be "revealed." Which is obviously not what we want to happen.
It seems like most of you haven't run into this issue because the page sizes you're creating are more in line with what I usually create (e.g. 40x40 or so at most). Either that or you and everyone you play with has really beefy machines :-).
Something else to keep in mind is that zoom levels also play a roll here. If you have a 50x50 table zoomed to 150% to the rendering engine you're really looking at a "75x75" table. So you may have a page size that works fine at 100% zoom but "crashes" at 150% zoom.
I'm looking into possible solutions for this issue, but in the mean time I wanted to make you all aware of it. In addition, it would be helpful to get a sampling of what sort of sizes people are able to reliably create without losing fog of war/grid.
Thanks,
Riley
