Changes

CRT-Royale is a large and complex shader, so it will need modern hardware to run correctly. Discreet Discrete Nvidia or AMD video cards made in the last few years are recommended. In particular, Intel iGPUs will struggle to run the shader and some may not even run in some cases. The author provided a preset for Intel users that compromises some functionality for compatibility. There's also various <code>user-settings.h</code> files in <code>crt-royale-settings-files</code><ref>[https://github.com/libretro/common-shaders/tree/master/crt/shaders/crt-royale/crt-royale-settings-files crt-royale-settings-files]</ref> that enable/disable options for different GPU profiles. The display you use for CRT-Royale should have at least 1440p of resolution to give a decent level of detail for slot mask emulation, though 4K (2160p) or higher resolutions is recommended. 1080p displays can work for aperture grille emulation, since less resolution is needed to render vertically aligned phosphors.