Large stl doesn't display

[mrweix]

Loading a 112 MB stl file is not displayed in the viewer all though in the console it says it finished loading and rendering (in 4000 ms). Is there a file size limit ? Any other idea how to display such large files?

[mrweix]

interestingly this issue only occurs on Mac OS (with Firefox 45, Chrome 49, Safari 9.1). In windows on Firefox 45 also larger stl files (112 MB, 185 MB) are displayed and rendered.

[cignoni]

The problem is that some browsers put some hard limits to the memory that a javascript process can allocate. It is something that varies a lot between different OS and browsers (some recent versions of chrome for example under win10 cap js memory to less than 1gb)
In future version we will allow different memory choices at startup.

[mrweix]

Whats the browser and OS for the best experience in your experience? Do you know of a way how to change this values in some settings or is this hardcoded by the browser per OS?

[mrweix]

I have also noticed that whenever I start the browser new it will load also larger objects. But then loading some larger stl files in a row will after some time lead to a memory error even when I delete each layer and make a browser "garbage collect". Is there some sort of webgl reset call that one could integrate when deleting all layers that could reset to the state when the browser is started?

[mrweix]

Which files would be affected by compilation with -s ALLOW_MEMORY_GROWTH=1 . Only generated/MeshLabCppCore.js ? Is there a branch with such a file somewhere available?

[cignoni]

when -s ALLOW_MEMORY_GROWTH=1 is enabled the tool become a lot slower. No branch for it up to now, but it is an easy change to be tested: just change line 17 of MakefileJS ( https://github.com/cnr-isti-vclab/meshlabjs/blob/master/sources/MakefileJS ) and recompile the cpp files. No other changes needed to have dynamic memory growth...

[mrweix]

Thanks for the feedback! How to recompile the cpp files? Just calling MakefileJS?

[cignoni]

yes it is a standard makefile. Assuming you have the emscripten environement all setup (and on windows you have installed also the mingw32 package through emskd) just type
make -f MakefileJS from a command line in the meshlabjs/sources folder.