Since we're not linking to the libraries anymore, it doesn't make much sense to
use find_library, and in fact we need to use dependency() in order to get the
right CFLAGS for includes, defines, etc, so use that instead.
As a result, we can remove the 'SDL2/' folders from the includes, making the SDL
includes more correct.
Removing these link-time dependencies is important for making a single binary that is compatible with either backend, regardless of whether or not each one is currently available to the program.
Rather than directly calling functions, the API now calls shared functions that call into a WsiDriver instance, which is allocated and implemented by the backend. Functionally this should be the same, it just has the extra allocation for the function table.
This prepares the WSI library for supporting multiple implementations in a single binary.
Unlike linear filtering this guarantees that we never read outside the source
region, and this also lets us perform color space conversion prior to filtering.
When linking pipelines, all pipeline libraries are required to declare
the exact same set of push constants, even for stages not part of the
respective libraries.
This invalidates all fossilize databases.
Without mods, Nier Replicant runs faster when going above 60 FPS.
The game had an official patch that implemented a framerate limiter to prevent this. This limiter is terrible, because it's not a stable 60 FPS, but a weird 57-58 FPS. There's no way to disable this in-game, it has to be done by editing a config file or through a mod.
So, why remove the default frame limiter from DXVK?
- In the default case (a user plays the game as it is), it does nothing, since 57-58 is lower than 60.
- If a user is going out of their way to edit the config file, why would they assume that DXVK already provides a frame limiter? They are going to follow [a guide](https://www.pcgamingwiki.com/wiki/NieR_Replicant#Framerate_limited_to_57.7E58_FPS) that says to set up a frame limiter, it doesn't say "set up a frame limiter, unless you are using DXVK, in that case it's already there".
- They are using [Special K in order to use a mod to play at high refresh rates at normal speed](https://wiki.special-k.info/SpecialK/Custom/Replicant). In this case, DXVK's default limiter is harmful, since it is not documented that it's there by default.
Since this default limiter is useless in the first two cases and harmful in the third, I think it should be removed.
The alternative would be to document this (e.g. in PCGamingWiki), but the instructions wouldn't look pretty... "After following the instructions to use Special K in order to play at higher framerates at normal speed, if are using DXVK/Proton, also do these things to disable its default 60 FPS cap: [...]"
Especially because that the game isn't broken in the default case, I don't think DXVK should tamper with these things in a way that requires documentation to revert.
Tested Special K's mod to play at higher refresh rates on Linux.
Drastically limits the amount of descriptor memory we allocate in situations
where an application renders without presenting anything to a swap chain.
The new limit is a bit tight for some real-world use cases (e.g. Ashes of the Singularity),
but at worst we will start calling vkAllocateDescriptorSets once per set and draw.
This is not a legal optimization inside non-uniform control flow due
to Vulkan's extremely permissive convergence rules, and apparently
breaks on Nvidia as a result.
Mesa drivers already do the same thing internally anyway.
