[core, hle, video_core, memory] Improve multi-process, display layers, dynamic shader cache and rework overlay (#4238)

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

- Dynamic shader cache reloading capability for qlaunch
- Multi-process improvements (thanks to @frank1734), instead of just using the main application we now respect caller process (also did it for HID devices while I was at it)
- Layer stack masks & shared buffer screenshot for video core, added different masks (screenshot, recording, etc.) this was discovered as an issue due to how in qlaunch the transition was not right between applications. May not be perfect but also fixes screenshots while using qlaunch
- Reworked overlay display management (input and visibility) - instead of random numbers as I've previously did, I decided to add an AppletZIndex enum for better readability. Also split capability of input by touch and gamepad.
- etc.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4238
Reviewed-by: Samuel <lizzie@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

src/core/loader/nca.cpp

@@ -12,7 +12,9 @@
 #include "common/scope_exit.h"
 #include "core/core.h"
 #include "core/file_sys/content_archive.h"
+#include "core/file_sys/control_metadata.h"
 #include "core/file_sys/nca_metadata.h"
+#include "core/file_sys/patch_manager.h"
 #include "core/file_sys/registered_cache.h"
 #include "core/file_sys/romfs_factory.h"
 #include "core/hle/kernel/k_process.h"
@@ -33,8 +35,14 @@ static u32 CalculatePointerBufferSize(size_t heap_size) {
     }
 }
 
-AppLoader_NCA::AppLoader_NCA(FileSys::VirtualFile file_)
-    : AppLoader(std::move(file_)), nca(std::make_unique<FileSys::NCA>(file)) {}
+AppLoader_NCA::AppLoader_NCA(FileSys::VirtualFile file_, u64 update_only_program_id_)
+    : AppLoader(std::move(file_)),
+      nca(std::make_unique<FileSys::NCA>(file, nullptr, update_only_program_id_ != 0)),
+      update_only_program_id(update_only_program_id_) {}
+
+u64 AppLoader_NCA::GetProgramId() const {
+    return update_only_program_id != 0 ? update_only_program_id : nca->GetTitleId();
+}
 
 AppLoader_NCA::~AppLoader_NCA() = default;
 
@@ -110,11 +118,21 @@ AppLoader_NCA::LoadResult AppLoader_NCA::Load(Kernel::KProcess& process, Core::S
     }
 
     LOG_INFO(Loader, "Set pointer buffer size to {:#x} bytes for ProgramID {:#018x} (Heap size: {:#x})",
-             process.GetPointerBufferSize(), nca->GetTitleId(), heap_size);
+             process.GetPointerBufferSize(), GetProgramId(), heap_size);
+
+    auto metadata =
+        FileSys::PatchManager::GetMetadataFromBaseOrUpdate(system, this->GetProgramId());
+    if (metadata.first != nullptr) {
+        nacp = std::move(metadata.first);
+        LOG_INFO(Loader, "Control data for {:016X}: name=\"{}\" supported_languages={:08X}",
+                 this->GetProgramId(), nacp->GetApplicationName(), nacp->GetSupportedLanguages());
+    } else {
+        LOG_WARNING(Loader, "No control data found for program {:016X}", this->GetProgramId());
+    }
 
     // Register the process in the file system controller
     system.GetFileSystemController().RegisterProcess(
-        process.GetProcessId(), nca->GetTitleId(),
+        process.GetProcessId(), GetProgramId(),
         std::make_shared<FileSys::RomFSFactory>(*this, system.GetContentProvider(),
                                                 system.GetFileSystemController()));
 
@@ -222,7 +240,25 @@ ResultStatus AppLoader_NCA::ReadProgramId(u64& out_program_id) {
         return ResultStatus::ErrorNotInitialized;
     }
 
-    out_program_id = nca->GetTitleId();
+    out_program_id = GetProgramId();
+    return ResultStatus::Success;
+}
+
+ResultStatus AppLoader_NCA::ReadControlData(FileSys::NACP& out_control) {
+    if (nacp == nullptr) {
+        return ResultStatus::ErrorNoControl;
+    }
+
+    out_control = *nacp;
+    return ResultStatus::Success;
+}
+
+ResultStatus AppLoader_NCA::ReadTitle(std::string& out_title) {
+    if (nacp == nullptr) {
+        return ResultStatus::ErrorNoControl;
+    }
+
+    out_title = nacp->GetApplicationName();
     return ResultStatus::Success;
 }