I'm trying to speed up my graphic engine, however the presence of the GC in function Layer.updateRaster (see here: https://github.com/ZILtoid1991/pixelperfectengine/blob/master/pixelperfectengine/src/PixelPerfectEngine/graphics/layers.d ) means I get an occasional bump in CPU usage if not a framedrop (most performance related thing got fixed since then).

I use classinfo for detecting the type of bitmaps, and while I probably will have a workaround for the associative array stuff, the classinfo thing is embedded into the runtime library, thus it needs to be fixed. I took a look at opEquals, but the trickier part would be making the toString function @nogc (make its return value a ref type?).

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