Away3D Forum Adding alphaBlending to TextureMaterial changes rendering order

Adding alphaBlending to TextureMaterial changes rendering order Software: Away3D 4.x

mattmogford, Newbie Posted: 09 July 2013 02:53 PM Total Posts: 23 Hi All, I’m having a problem as described in the title where if I set texture.alphaBlending = true; The z-order / rendering order becomes incorrect ( See Screenshot ). If I don’t use alpha blending but instead set alphaThreshold to 0.8 for example it works, but the sem-transparent pixels on the edge are black and when the camera moves there is horrible ‘jaggedness’ on the affected Sprites. Code below >> `objTextureMaterial = new TextureMaterial( new BitmapTexture( spritesheetObject.bitmap.bitmapData ), true, false, true ); //objTextureMaterial.alphaThreshold = 0.8; objTextureMaterial.alphaBlending = true; objTextureMaterial.smooth = true; materialDictionary[ materialName ] = objTextureMaterial;` Does anyone know why this is happening? And if so how to fix it please? Thanks for any help. Matt
mattmogford, Newbie Posted: 09 July 2013 03:20 PM Total Posts: 23 [ # 1 ] Also, This game is for live tv. This is the reason why alphaThreshold doesn’t look good enough.
GoroMatsumoto, Sr. Member Posted: 09 July 2013 03:24 PM Total Posts: 166 [ # 2 ] Hey, you are a lucky guy. This problem was fixed in dev today. https://github.com/away3d/away3d-core-fp11/issues/605 Try to use latest dev. Cheers.
mattmogford, Newbie Posted: 09 July 2013 03:39 PM Total Posts: 23 [ # 3 ] Amazing! Thank you! Can I download a swc with that fix built in it now? Or do I need to compile it myself? Thanks
GoroMatsumoto, Sr. Member Posted: 09 July 2013 03:41 PM Total Posts: 166 [ # 4 ] `objTextureMaterial = new TextureMaterial( new BitmapTexture( spritesheetObject.bitmap.bitmapData )); objTextureMaterial.alphaThreshold = 0.8; objTextureMaterial.alphaPremultiplied = true; objTextureMaterial.smooth = false;` If you want to use alphaThreshold, you should check “alphaPremultiplied = true” and “smooth = false”. That will reduce the black edge artifacts.
GoroMatsumoto, Sr. Member Posted: 09 July 2013 03:48 PM Total Posts: 166 [ # 5 ] No, there is no SWC that included this fix. As far as I know. https://github.com/away3d/away3d-core-fp11/tree/dev
mattmogford, Newbie Posted: 09 July 2013 04:10 PM Total Posts: 23 [ # 6 ] I created an Actionscript Library project with the /dev branch. Compiled a swc. And alphaPremultiplied = true; now works a treat. Super Smooth. Thank you

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