PixelDensity (Retina) does not affect ping-pong buffer

[cansik]

The pixel density does currently not affect the ping-pong buffer size. The pixel density has to be calculated into the buffer size.

settings()
{
    pixelDensity(2);
}

Example

[cansik]

Tried to trace the problem...but it seems that the g (main buffer) is not drawn correctly on the pass buffers. Does not happen if you first render everything onto an offscreen canvas.