The optimization for colorbuffer resolution introduced in PR #706 is now enabled. This optimization changes the resolution of certain framebuffer textures, which may conflict with the texture resolution rules set by some graphic packs. As a result, if a graphic pack that specifies texture resolution rules is in use, the optimization will automatically be turned off to prevent any issues.
To circumvent this, graphic packs can now include the setting "colorbufferOptimizationAware = true" in their rules.txt. This setting indicates that the pack has been updated to handle the resolution changes introduced by the optimization. Cemu will allow the optimization to remain enabled if resolution packs have this flag set.
"Intel legacy mode" was a special mode to workaround various Intel OpenGL driver limitations during the earlier years of Cemu. It's been unmaintained for years and no longer serves a purpose.
If we ever bring back compatibility with ancient Intel GPUs it should be done in a more structured way than a blunt yes/no flag.
2.0 introduced a race condition where the shader cache loading screen could load shaders before the graphic packs finished activating, potentially bypassing custom shaders.
Also removed legacy GraphicPack interface (GraphicPack.cpp/.h) since it was only kept around for Cemuhook and removed u8string variant of cemuLog_force since it's no longer used
