[core] Add overridable game setting functionality (#2963)

Adds a place to override specific game settings for specific vendors

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2963
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Co-authored-by: Kleidis <kleidis1@protonmail.com>
Co-committed-by: Kleidis <kleidis1@protonmail.com>

4 files changed, 205 insertions, 43 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 6a8b9b93b3..a961eff8bf 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -17,6 +17,8 @@ add_library(core STATIC
     constants.h
     core.cpp
     core.h
+    game_settings.cpp
+    game_settings.h
     core_timing.cpp
     core_timing.h
     cpu_manager.cpp
diff --git a/src/core/core.cpp b/src/core/core.cpp
index edc2df4851..bf97184f8f 100644
--- a/src/core/core.cpp
+++ b/src/core/core.cpp
@@ -6,6 +6,7 @@
 #include <memory>
 #include <utility>
 
+#include "game_settings.h"
 #include "audio_core/audio_core.h"
 #include "common/fs/fs.h"
 #include "common/logging/log.h"
@@ -292,48 +293,6 @@ struct System::Impl {
         return SystemResultStatus::Success;
     }
 
-
-    void LoadOverrides(u64 programId) const {
-        std::string vendor = gpu_core->Renderer().GetDeviceVendor();
-        LOG_INFO(Core, "GPU Vendor: {}", vendor);
-
-        // Reset all per-game flags
-        Settings::values.use_squashed_iterated_blend = false;
-
-        // Insert PC overrides here
-
-    #ifdef ANDROID
-        // Example on how to set a setting based on the program ID and vendor
-        if (programId == 0x010028600EBDA000 && vendor == "Mali") { // Mario 3d World
-          // Settings::values.example = true;
-        }
-
-        // Example array of program IDs
-        const std::array<u64, 10> example_array = {
-                //0xprogramId
-                0x0004000000033400, // Game 1
-                0x0004000000033500 // Game 2
-                // And so on
-        };
-
-        for (auto id : example_array) {
-            if (programId == id) {
-             // Settings::values.example = true;
-                break;
-            }
-        }
-
-    #endif
-
-        // Ninja Gaiden Ragebound
-        constexpr u64 ngr = 0x0100781020710000ULL;
-
-        if (programId == ngr) {
-            LOG_INFO(Core, "Enabling game specifc override: use_squashed_iterated_blend");
-            Settings::values.use_squashed_iterated_blend = true;
-        }
-    }
-
     SystemResultStatus Load(System& system, Frontend::EmuWindow& emu_window,
                             const std::string& filepath,
                             Service::AM::FrontendAppletParameters& params) {
@@ -419,7 +378,8 @@ struct System::Impl {
             LOG_ERROR(Core, "Failed to find program id for ROM");
         }
 
-        LoadOverrides(program_id);
+
+        GameSettings::LoadOverrides(program_id, gpu_core->Renderer());
         if (auto room_member = Network::GetRoomMember().lock()) {
             Network::GameInfo game_info;
             game_info.name = name;
diff --git a/src/core/game_settings.cpp b/src/core/game_settings.cpp
new file mode 100644
index 0000000000..da1530e026
--- /dev/null
+++ b/src/core/game_settings.cpp
@@ -0,0 +1,140 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "core/game_settings.h"
+
+#include <algorithm>
+#include <cctype>
+
+#include "common/logging/log.h"
+#include "common/settings.h"
+#include "video_core/renderer_base.h"
+
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+
+namespace Core::GameSettings {
+
+static GPUVendor GetGPU(const std::string& gpu_vendor_string) {
+    struct Entry { const char* name; GPUVendor vendor; };
+    static constexpr Entry GpuVendor[] = {
+        // NVIDIA
+        {"NVIDIA",   GPUVendor::Nvidia},
+        {"Nouveau",  GPUVendor::Nvidia},
+        {"NVK",      GPUVendor::Nvidia},
+        {"Tegra",    GPUVendor::Nvidia},
+        // AMD
+        {"AMD",       GPUVendor::AMD},
+        {"RadeonSI",  GPUVendor::AMD},
+        {"RADV",      GPUVendor::AMD},
+        {"AMDVLK",    GPUVendor::AMD},
+        {"R600",      GPUVendor::AMD},
+        // Intel
+        {"Intel",     GPUVendor::Intel},
+        {"ANV",       GPUVendor::Intel},
+        {"i965",      GPUVendor::Intel},
+        {"i915",      GPUVendor::Intel},
+        {"OpenSWR",   GPUVendor::Intel},
+        // Apple
+        {"Apple",     GPUVendor::Apple},
+        {"MoltenVK",  GPUVendor::Apple},
+        // Qualcomm / Adreno
+        {"Qualcomm",  GPUVendor::Qualcomm},
+        {"Turnip",    GPUVendor::Qualcomm},
+        // ARM / Mali
+        {"Mali",      GPUVendor::ARM},
+        {"PanVK",     GPUVendor::ARM},
+        // Imagination / PowerVR
+        {"PowerVR",   GPUVendor::Imagination},
+        {"PVR",       GPUVendor::Imagination},
+        // Microsoft / WARP / D3D12 GL
+        {"D3D12",     GPUVendor::Microsoft},
+        {"Microsoft", GPUVendor::Microsoft},
+        {"WARP",      GPUVendor::Microsoft},
+    };
+
+    for (const auto& entry : GpuVendor) {
+        if (gpu_vendor_string == entry.name) {
+            return entry.vendor;
+        }
+    }
+
+    // legacy (shouldn't be needed anymore, but just in case)
+    std::string gpu = gpu_vendor_string;
+    std::transform(gpu.begin(), gpu.end(), gpu.begin(), [](unsigned char c){ return (char)std::tolower(c); });
+    if (gpu.find("geforce") != std::string::npos) {
+        return GPUVendor::Nvidia;
+    }
+    if (gpu.find("radeon") != std::string::npos || gpu.find("ati") != std::string::npos) {
+        return GPUVendor::AMD;
+    }
+
+    return GPUVendor::Unknown;
+}
+
+static OS DetectOS() {
+#if defined(_WIN32)
+    return OS::Windows;
+#elif defined(__FIREOS__)
+    return OS::FireOS;
+#elif defined(__ANDROID__)
+    return OS::Android;
+#elif defined(__OHOS__)
+    return OS::HarmonyOS;
+#elif defined(__HAIKU__)
+    return OS::HaikuOS;
+#elif defined(__DragonFly__)
+    return OS::DragonFlyBSD;
+#elif defined(__NetBSD__)
+    return OS::NetBSD;
+#elif defined(__OpenBSD__)
+    return OS::OpenBSD;
+#elif defined(_AIX)
+    return OS::AIX;
+#elif defined(__managarm__)
+    return OS::Managarm;
+#elif defined(__redox__)
+    return OS::RedoxOS;
+#elif defined(__APPLE__) && defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+    return OS::IOS;
+#elif defined(__APPLE__)
+    return OS::MacOS;
+#elif defined(__FreeBSD__)
+    return OS::FreeBSD;
+#elif defined(__sun) && defined(__SVR4)
+    return OS::Solaris;
+#elif defined(__linux__)
+    return OS::Linux;
+#else
+    return OS::Unknown;
+#endif
+}
+
+EnvironmentInfo DetectEnvironment(const VideoCore::RendererBase& renderer) {
+    EnvironmentInfo env{};
+    env.os = DetectOS();
+    env.vendor_string = renderer.GetDeviceVendor();
+    env.vendor = GetGPU(env.vendor_string);
+    return env;
+}
+
+void LoadOverrides(std::uint64_t program_id, const VideoCore::RendererBase& renderer) {
+    const auto env = DetectEnvironment(renderer);
+
+    switch (static_cast<TitleID>(program_id)) {
+        case TitleID::NinjaGaidenRagebound:
+            Settings::values.use_squashed_iterated_blend = true;
+            break;
+        default:
+            break;
+    }
+
+    LOG_INFO(Core, "Applied game settings for title ID {:016X} on OS {}, GPU vendor {} ({})",
+             program_id,
+             static_cast<int>(env.os),
+             static_cast<int>(env.vendor),
+             env.vendor_string);
+}
+
+} // namespace Core::GameSettings
diff --git a/src/core/game_settings.h b/src/core/game_settings.h
new file mode 100644
index 0000000000..327a1a4e2c
--- /dev/null
+++ b/src/core/game_settings.h
@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <string>
+
+namespace VideoCore { class RendererBase; }
+
+namespace Core::GameSettings {
+
+enum class OS {
+    Windows,
+    Linux,
+    MacOS,
+    IOS,
+    Android,
+    FireOS,
+    HarmonyOS,
+    FreeBSD,
+    DragonFlyBSD,
+    NetBSD,
+    OpenBSD,
+    HaikuOS,
+    AIX,
+    Managarm,
+    RedoxOS,
+    Solaris,
+    Unknown,
+};
+
+enum class GPUVendor {
+    Nvidia,
+    AMD,
+    Intel,
+    Apple,
+    Qualcomm,
+    ARM,
+    Imagination,
+    Microsoft,
+    Unknown,
+};
+
+enum class TitleID : std::uint64_t {
+    NinjaGaidenRagebound = 0x0100781020710000ULL
+};
+
+struct EnvironmentInfo {
+    OS os{OS::Unknown};
+    GPUVendor vendor{GPUVendor::Unknown};
+    std::string vendor_string; // raw string from driver
+};
+
+EnvironmentInfo DetectEnvironment(const VideoCore::RendererBase& renderer);
+
+void LoadOverrides(std::uint64_t program_id, const VideoCore::RendererBase& renderer);
+
+} // namespace Core::GameSettings