Bug fix: framebuffer clear when using glow with multi-viewports #3713
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I broke this in #3665
For some reason, when using multiple viewports, the first "clear" doesn't take.
I don't have time to investigate further, so I am adding a hack here which:
App::update
so user can paint thereApp::update
, so that it worksThis means painting in
App::update
won't work with multi-viewports.Ideally, users should use paint callbacks instead of painting directly in
App::update
anyways.