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Canvas Blend Mode Bug


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There seems to be a bug in the latest version of pixi in the canvas renderer.


If the last item rendered is not the normal blend mode, then its possible for the next few items rendered to use the same blend mode as that previous item (thus creating random graphic flashes across the screen when items with the normal blend mode are being processed with the wrong blend mode). We couldn't find the exact pattern of when the normal blend mode kicks back in, but it is possible that this happens when theres an additional blend mode being applied somewhere in the draw stack.


We were able to fix it with a hack by adding in these two lines of code in the PIXI.CanvasRenderer.prototype.render function:

this.renderSession.currentBlendMode = PIXI.blendModes.NORMAL;this.context.globalCompositeOperation = PIXI.blendModesCanvas[this.renderSession.currentBlendMode];
Let me know if that needs more clarification as it's kind of a weird bug. Has anyone else ran into this issue?
Edit: Looks like this issue was also posted on github today: https://github.com/GoodBoyDigital/pixi.js/issues/837
Edited by breadfan
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