Why does the glow around the circle disappear?
local circle = display.newCircle( 0, 0, 50 ) circle.fill = {1,0,0} local snapshot = display.newSnapshot( 200, 200 ) snapshot.group:insert( circle ) snapshot.x, snapshot.y = 200, 200 snapshot.fill.effect = "filter.bloom" snapshot.fill.effect.levels.white = 0.8 snapshot.fill.effect.levels.black = 0.4 snapshot.fill.effect.levels.gamma = 1 snapshot.fill.effect.add.alpha = 0.8 snapshot.fill.effect.blur.horizontal.blurSize = 20 snapshot.fill.effect.blur.horizontal.sigma = 140 snapshot.fill.effect.blur.vertical.blurSize = 20 snapshot.fill.effect.blur.vertical.sigma = 140 timer.performWithDelay( 500, function() snapshot:invalidate() end, 1 )
I know I could apply the effect directly, but this is part of a larger piece and I just need to understand what invalidate is doing to the effect and how to update the glow (to be combined with others, later.)