* [util] Adds getTempDirectory() function
Will be used by on-disk pipeline caching
* [dxvk] Implement on-disk shader caching
Saving the pipeline cache to disk when the application exits
should be sufficient but the DxvkPipelineCache destructor isn't
reliably called on exit (ref-counting issue?).
As a workaround every frame we check and save the cache if the
size increased by some amount or after one minute elapsed.
* [dxvk] Periodically update shader cache file in separate thread
Reduces the CPU overhead of descriptor set updates, which usually
happen once per draw call. Gains seem to be minor in most games,
some outliers show significantly better performance (i.e. Tomb Raider).
When using DXVK_LOG_LEVEL=debug, the graphics pipeline manager now
prints the names of the shaders used by the pipeline. This shall
help debug driver crashes in vkCreate*Pipelines.
Checks whether all input slots consumed by the vertex shader
are provided by the input layout, and disables rendering in
case the state validation fails. This should hopefully fix
GPU lockups in Nier:Automata.
In order to emulate D3D11 behaviour when a resource is not bound,
we use specialization constants. This requires further changes in
the shader compiler.
