Hands-On High Performance Programming with Qt 5

Minimizing assets

As on embedded and mobile devices there isn't much space for static storage, the graphic resources we use could also be a problem analogous to the executable size. As we already mentioned in Chapter 8, Optimizing Graphic Performance, GPUs support compression of texture data (that is, images). This will speed up the transfer of texture data from CPU to GPU but also the loading times when our application starts. Qt 3D includes support for compressed textures from the beginning, and starting with Qt 5.11, the QML Image element also supports the loading of compressed texture data.

Apart from that, a further optimization that can be applied is the minimization of the contained 2D images. There are some commercial tools that will ...