When images are downscaled I'm seeing some fairly bad aliasing in the scaled images. To improve this I've patched Shapes to generate mipmaps when downscaling images (off by default as this increases memory usage).
I would like to contribute this but I still need to get legal approval from my employer to sign the contributor agreement. Just wanted to get some early feedback on this patch. Is this likely to be accepted?
Here are two image files that demonstrate the effect of this patch on rendering quality.
The two attached images are generated from the same source PDF. nomipmap.png is generated using the current image scaling. mipmap.png is generated with the mipmap patch applied and the setting enabled.