libretro: Add compatibility settings loading

scripts/gamesettings_to_libretro.py

@@ -0,0 +1,106 @@
+import sys
+import configparser
+
+def parse_ini(path):
+    config = configparser.ConfigParser()
+    config.read(path)
+
+    entries = {}
+    int_keys = {
+        "DisplayActiveStartOffset": "display_active_start_offset",
+        "DisplayActiveEndOffset": "display_active_end_offset",
+        "DMAMaxSliceTicks": "dma_max_slice_ticks",
+        "DMAHaltTicks": "dma_halt_ticks",
+        "GPUFIFOSize" : "gpu_fifo_size",
+        "GPUMaxRunAhead" : "gpu_max_run_ahead"
+    }
+    float_keys = {
+        "GPUPGXPTolerance" : "gpu_pgxp_tolerance"
+    }
+    traits = [
+        "ForceInterpreter",
+        "ForceSoftwareRenderer",
+        "ForceInterlacing",
+        "DisableTrueColor",
+        "DisableUpscaling",
+        "DisableScaledDithering",
+        "DisableForceNTSCTimings",
+        "DisableWidescreen",
+        "DisablePGXP",
+        "DisablePGXPCulling",
+        "DisablePGXPTextureCorrection",
+        "ForcePGXPVertexCache",
+        "ForcePGXPCPUMode",
+        "ForceDigitalController",
+        "ForceRecompilerMemoryExceptions",
+        "ForceRecompilerICache"
+    ]
+
+    for gameid in config.sections():
+        entry = {}
+        for ini_key, cpp_key in int_keys.items():
+            try:
+                value = config.get(gameid, ini_key)
+                if value is not None:
+                    entry[cpp_key] = str(value)
+            except configparser.NoOptionError:
+                pass
+
+        for ini_key, cpp_key in float_keys.items():
+            try:
+                value = config.getfloat(gameid, ini_key, fallback=None)
+                if value is not None:
+                    entry[cpp_key] = str(value)
+            except configparser.NoOptionError:
+                pass
+        
+        for trait in traits:
+            try:
+                value = config.getboolean(gameid, trait, fallback=None)
+                if value == True:
+                    if "traits" not in entry:
+                        entry["traits"] = []
+                    entry["traits"].append(trait)
+            except configparser.NoOptionError:
+                pass
+
+        if len(entry) > 0:
+            entries[gameid] = entry
+
+    return entries
+
+
+def write_cpp(entries, path):
+    print("Writing %u entries to '%s'" % (len(entries), path))
+    with open(path, "w") as f:
+        f.write('#include "libretro_game_settings.h"\n')
+        f.write('\n')
+        f.write('std::unique_ptr<GameSettings::Entry> GetSettingsForGame(const std::string& game_code)\n')
+        f.write('{\n')
+        f.write('  std::unique_ptr<GameSettings::Entry> gs = std::make_unique<GameSettings::Entry>();\n')
+        f.write('\n')
+
+        for gameid, entry in entries.items():
+            f.write('  if (game_code == "%s")\n' % gameid)
+            f.write('  {\n')
+            for key, value in entry.items():
+                if key == "traits":
+                    for trait in value:
+                        f.write('    gs->AddTrait(GameSettings::Trait::%s);\n' % trait)
+                else:
+                    f.write('    gs->%s = %s;\n' % (key, value))
+            f.write('    return gs;\n')
+            f.write('  }\n')
+            f.write('\n')
+
+        f.write('  return {};\n')
+        f.write('}\n')
+    
+
+if __name__ == "__main__":
+    if len(sys.argv) < 3:
+        print("usage: %s <path to gamesettings.ini> <output cpp file>" % sys.argv[0])
+        sys.exit(1)
+
+    entries = parse_ini(sys.argv[1])
+    write_cpp(entries, sys.argv[2])

src/duckstation-libretro/CMakeLists.txt

@@ -1,6 +1,8 @@
 add_library(duckstation_libretro SHARED
   libretro_audio_stream.cpp
   libretro_audio_stream.h
+  libretro_game_settings.cpp
+  libretro_game_settings.h
   libretro_host_display.cpp
   libretro_host_display.h
   libretro_host_interface.cpp

src/duckstation-libretro/duckstation-libretro.vcxproj

@@ -70,6 +70,7 @@
   <ItemGroup>
     <ClCompile Include="libretro_d3d11_host_display.cpp" />
     <ClCompile Include="libretro_audio_stream.cpp" />
+    <ClCompile Include="libretro_game_settings.cpp" />
     <ClCompile Include="libretro_host_display.cpp" />
     <ClCompile Include="libretro_host_interface.cpp" />
     <ClCompile Include="libretro_settings_interface.cpp" />
@@ -80,6 +81,7 @@
   <ItemGroup>
     <ClInclude Include="libretro_d3d11_host_display.h" />
     <ClInclude Include="libretro_audio_stream.h" />
+    <ClInclude Include="libretro_game_settings.h" />
     <ClInclude Include="libretro_host_display.h" />
     <ClInclude Include="libretro_host_interface.h" />
     <ClInclude Include="libretro_settings_interface.h" />

src/duckstation-libretro/duckstation-libretro.vcxproj.filters

@@ -9,6 +9,7 @@
     <ClCompile Include="libretro_opengl_host_display.cpp" />
     <ClCompile Include="libretro_d3d11_host_display.cpp" />
     <ClCompile Include="libretro_vulkan_host_display.cpp" />
+    <ClCompile Include="libretro_game_settings.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="libretro_host_interface.h" />
@@ -18,5 +19,6 @@
     <ClInclude Include="libretro_opengl_host_display.h" />
     <ClInclude Include="libretro_d3d11_host_display.h" />
     <ClInclude Include="libretro_vulkan_host_display.h" />
+    <ClInclude Include="libretro_game_settings.h" />
   </ItemGroup>
 </Project>

src/duckstation-libretro/libretro_game_settings.cpp

@@ -0,0 +1,561 @@
+#include "libretro_game_settings.h"
+
+std::unique_ptr<GameSettings::Entry> GetSettingsForGame(const std::string& game_code)
+{
+  std::unique_ptr<GameSettings::Entry> gs = std::make_unique<GameSettings::Entry>();
+
+  if (game_code == "SLUS-00530")
+  {
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00634")
+  {
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00077")
+  {
+    gs->AddTrait(GameSettings::Trait::DisableUpscaling);
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLPM-87089")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLPS-03336")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-01260")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLES-01211")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-01261")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLES-02466")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLES-00259")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLES-00606")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00639")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-90039")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceSoftwareRenderer);
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00337")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00606")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLPS-03553")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLPS-01211")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00656")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00952")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-01222")
+  {
+    gs->display_active_start_offset = 64;
+    gs->display_active_end_offset = 68;
+    return gs;
+  }
+
+  if (game_code == "SLUS-00297")
+  {
+    gs->AddTrait(GameSettings::Trait::DisableUpscaling);
+    gs->AddTrait(GameSettings::Trait::DisablePGXP);
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94350")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94900")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "PCPX-96085")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00590")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00403")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94300")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00214")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00204")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00006")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00213")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SCES-00344")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00355")
+  {
+    gs->AddTrait(GameSettings::Trait::DisableUpscaling);
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00331")
+  {
+    gs->AddTrait(GameSettings::Trait::DisableUpscaling);
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00106")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00005")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-01265")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00601")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLPS-00435")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceRecompilerICache);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00388")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceRecompilerICache);
+    return gs;
+  }
+
+  if (game_code == "SCES-02834")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceRecompilerICache);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00870")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterpreter);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00183")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceRecompilerICache);
+    return gs;
+  }
+
+  if (game_code == "SLES-00483")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLPS-02361")
+  {
+    gs->AddTrait(GameSettings::Trait::ForcePGXPVertexCache);
+    return gs;
+  }
+
+  if (game_code == "SLPM-86023")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00067")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLES-00524")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLPS-00712")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceRecompilerICache);
+    return gs;
+  }
+
+  if (game_code == "SLPS-01434")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00684")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterpreter);
+    return gs;
+  }
+
+  if (game_code == "SLPS-02459")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLPM-86750")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLPS-02120")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterlacing);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00102")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00152")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00603")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00348")
+  {
+    gs->AddTrait(GameSettings::Trait::DisableUpscaling);
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00042")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00561")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00035")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00057")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00014")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94403")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00549")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00240")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00027")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00119")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00224")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00453")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00753")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00811")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceDigitalController);
+    return gs;
+  }
+
+  if (game_code == "SLUS-00208")
+  {
+    gs->display_active_start_offset = -62;
+    gs->display_active_end_offset = 72;
+    return gs;
+  }
+
+  if (game_code == "SLPS-01762")
+  {
+    gs->AddTrait(GameSettings::Trait::DisablePGXPCulling);
+    return gs;
+  }
+
+  if (game_code == "SLPS-01567")
+  {
+    gs->display_active_start_offset = -62;
+    gs->display_active_end_offset = 51;
+    return gs;
+  }
+
+  if (game_code == "SLPS-00360")
+  {
+    gs->display_active_start_offset = -62;
+    gs->display_active_end_offset = 72;
+    return gs;
+  }
+
+  if (game_code == "SCES-02835")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterpreter);
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SCES-02104")
+  {
+    gs->AddTrait(GameSettings::Trait::ForceInterpreter);
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SCES-01438")
+  {
+    gs->AddTrait(GameSettings::Trait::DisablePGXPCulling);
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94467")
+  {
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94425")
+  {
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SCPS-10085")
+  {
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94228")
+  {
+    gs->AddTrait(GameSettings::Trait::DisablePGXPCulling);
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SCUS-94290")
+  {
+    gs->AddTrait(GameSettings::Trait::ForcePGXPCPUMode);
+    return gs;
+  }
+
+  if (game_code == "SLUS-01138")
+  {
+    gs->dma_max_slice_ticks = 200;
+    gs->gpu_max_run_ahead = 1;
+    return gs;
+  }
+
+  if (game_code == "SLPS-02376")
+  {
+    gs->dma_max_slice_ticks = 100;
+    gs->gpu_max_run_ahead = 1;
+    return gs;
+  }
+
+  if (game_code == "SLUS-00282")
+  {
+    gs->dma_max_slice_ticks = 200;
+    gs->gpu_max_run_ahead = 1;
+    return gs;
+  }
+
+  if (game_code == "SLUS-00022")
+  {
+    gs->AddTrait(GameSettings::Trait::DisableUpscaling);
+    return gs;
+  }
+
+  return {};
+}

src/duckstation-libretro/libretro_game_settings.h

@@ -0,0 +1,4 @@
+#include "frontend-common/game_settings.h"
+#include <memory>
+
+std::unique_ptr<GameSettings::Entry> GetSettingsForGame(const std::string& game_code);

src/duckstation-libretro/libretro_host_interface.cpp

@@ -12,6 +12,7 @@
 #include "core/gpu.h"
 #include "core/system.h"
 #include "libretro_audio_stream.h"
+#include "libretro_game_settings.h"
 #include "libretro_host_display.h"
 #include "libretro_opengl_host_display.h"
 #include "libretro_settings_interface.h"
@@ -135,7 +136,7 @@ void LibretroHostInterface::GetGameInfo(const char* path, CDImage* image, std::s
 {
   // Just use the filename for now... we don't have the game list. Unless we can pull this from the frontend somehow?
   *title = System::GetTitleForPath(path);
-  code->clear();
+  *code = System::GetGameCodeForImage(image);
 }
 
 static const char* GetSaveDirectory()
@@ -279,6 +280,32 @@ void LibretroHostInterface::UpdateLogging()
     Log::SetConsoleOutputParams(true, nullptr, g_settings.log_level);
 }
 
+bool LibretroHostInterface::UpdateGameSettings()
+{
+  std::unique_ptr<GameSettings::Entry> new_game_settings;
+
+  if (!System::IsShutdown() && !System::GetRunningCode().empty())
+  {
+    new_game_settings = GetSettingsForGame(System::GetRunningCode());
+    if (new_game_settings)
+      Log_InfoPrintf("Game settings found for %s", System::GetRunningCode().c_str());
+  }
+
+  if (new_game_settings == m_game_settings)
+    return false;
+
+  m_game_settings = std::move(new_game_settings);
+  return true;
+}
+
+void LibretroHostInterface::ApplyGameSettings()
+{
+  if (!g_settings.apply_game_settings || !m_game_settings)
+    return;
+
+  m_game_settings->ApplySettings(System::GetState() == System::State::Starting);
+}
+
 bool LibretroHostInterface::retro_load_game(const struct retro_game_info* game)
 {
   SystemBootParameters bp;
@@ -462,7 +489,7 @@ void LibretroHostInterface::OnSystemDestroyed()
   m_using_hardware_renderer = false;
 }
 
-static std::array<retro_core_option_definition, 45> s_option_definitions = {{
+static std::array<retro_core_option_definition, 46> s_option_definitions = {{
   {"duckstation_Console.Region",
    "Console Region",
    "Determines which region/hardware to emulate. Auto-Detect will use the region of the disc inserted.",
@@ -769,6 +796,11 @@ static std::array<retro_core_option_definition, 45> s_option_definitions = {{
    "Shows on-screen messages generated by the core.",
    {{"true", "Enabled"}, {"false", "Disabled"}},
    "true"},
+  {"duckstation_Main.ApplyGameSettings",
+   "Apply Compatibility Settings",
+   "Automatically disables enhancements on games which are incompatible.",
+   {{"true", "Enabled"}, {"false", "Disabled"}},
+   "true"},
   {"duckstation_Logging.LogLevel",
    "Log Level",
    "Sets the level of information logged by the core.",
@@ -858,32 +890,36 @@ void LibretroHostInterface::UpdateSettings()
 {
   Settings old_settings(std::move(g_settings));
   LoadSettings();
+  ApplyGameSettings();
   FixIncompatibleSettings(false);
 
-  if (g_settings.gpu_resolution_scale != old_settings.gpu_resolution_scale &&
-      g_settings.gpu_renderer != GPURenderer::Software)
+  if (System::IsValid())
   {
-    ReportMessage("Resolution changed, updating system AV info...");
-
-    UpdateSystemAVInfo(true);
-
-    if (!g_settings.IsUsingSoftwareRenderer())
+    if (g_settings.gpu_resolution_scale != old_settings.gpu_resolution_scale &&
+        g_settings.gpu_renderer != GPURenderer::Software)
     {
-      if (!m_hw_render_callback_valid)
-        RequestHardwareRendererContext();
-      else if (!m_using_hardware_renderer)
-        SwitchToHardwareRenderer();
+      ReportMessage("Resolution changed, updating system AV info...");
+
+      UpdateSystemAVInfo(true);
+
+      if (!g_settings.IsUsingSoftwareRenderer())
+      {
+        if (!m_hw_render_callback_valid)
+          RequestHardwareRendererContext();
+        else if (!m_using_hardware_renderer)
+          SwitchToHardwareRenderer();
+      }
+
+      // Don't let the base class mess with the GPU.
+      old_settings.gpu_resolution_scale = g_settings.gpu_resolution_scale;
     }
 
-    // Don't let the base class mess with the GPU.
-    old_settings.gpu_resolution_scale = g_settings.gpu_resolution_scale;
-  }
-
-  if (g_settings.gpu_renderer != old_settings.gpu_renderer)
-  {
-    ReportFormattedMessage("Switch to %s renderer pending, please restart the core to apply.",
-                           Settings::GetRendererDisplayName(g_settings.gpu_renderer));
-    g_settings.gpu_renderer = old_settings.gpu_renderer;
+    if (g_settings.gpu_renderer != old_settings.gpu_renderer)
+    {
+      ReportFormattedMessage("Switch to %s renderer pending, please restart the core to apply.",
+                             Settings::GetRendererDisplayName(g_settings.gpu_renderer));
+      g_settings.gpu_renderer = old_settings.gpu_renderer;
+    }
   }
 
   CheckForSettingsChanges(old_settings);
@@ -900,6 +936,13 @@ void LibretroHostInterface::CheckForSettingsChanges(const Settings& old_settings
     UpdateLogging();
 }
 
+void LibretroHostInterface::OnRunningGameChanged()
+{
+  Log_InfoPrintf("Running game changed: %s (%s)", System::GetRunningCode().c_str(), System::GetRunningTitle().c_str());
+  if (UpdateGameSettings())
+    UpdateSettings();
+}
+
 void LibretroHostInterface::InitRumbleInterface()
 {
   m_rumble_interface_valid = g_retro_environment_callback(RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE, &m_rumble_interface);

src/duckstation-libretro/libretro_host_interface.h

@@ -4,6 +4,12 @@
 #include "libretro.h"
 #include <limits>
 #include <optional>
+#include <memory>
+
+namespace GameSettings
+{
+struct Entry;
+}
 
 class LibretroHostInterface : public HostInterface
 {
@@ -50,6 +56,7 @@ protected:
   std::unique_ptr<AudioStream> CreateAudioStream(AudioBackend backend) override;
   void OnSystemDestroyed() override;
   void CheckForSettingsChanges(const Settings& old_settings) override;
+  void OnRunningGameChanged() override;
 
 private:
   bool SetCoreOptions();
@@ -68,6 +75,9 @@ private:
   void UpdateGeometry();
   void UpdateLogging();
 
+  bool UpdateGameSettings();
+  void ApplyGameSettings();
+
   // Hardware renderer setup.
   bool RequestHardwareRendererContext();
   void SwitchToHardwareRenderer();
@@ -88,6 +98,9 @@ private:
   static bool RETRO_CALLCONV DiskControlGetImagePath(unsigned index, char* path, size_t len);
   static bool RETRO_CALLCONV DiskControlGetImageLabel(unsigned index, char* label, size_t len);
 
+  std::unique_ptr<GameSettings::Entry> m_game_settings;
+  float m_last_aspect_ratio = 4.0f / 3.0f;
+
   retro_hw_render_callback m_hw_render_callback = {};
   std::unique_ptr<HostDisplay> m_hw_render_display;
   bool m_hw_render_callback_valid = false;
@@ -97,8 +110,6 @@ private:
   retro_rumble_interface m_rumble_interface = {};
   bool m_rumble_interface_valid = false;
   bool m_supports_input_bitmasks = false;
-
-  float m_last_aspect_ratio = 4.0f / 3.0f;
 };
 
 extern LibretroHostInterface g_libretro_host_interface;

src/frontend-common/CMakeLists.txt

@@ -1,4 +1,6 @@
 add_library(frontend-common
+  game_settings.cpp
+  game_settings.h
   opengl_host_display.cpp
   opengl_host_display.h
   vulkan_host_display.cpp
@@ -42,8 +44,6 @@ if(NOT BUILD_LIBRETRO_CORE)
     cubeb_audio_stream.h
     game_list.cpp
     game_list.h
-    game_settings.cpp
-    game_settings.h
     icon.cpp
     icon.h
     imgui_styles.cpp

src/frontend-common/game_settings.cpp

@@ -11,10 +11,12 @@
 #include <utility>
 Log_SetChannel(GameSettings);
 
+#ifndef LIBRETRO
 #ifdef WIN32
 #include "common/windows_headers.h"
 #endif
 #include "SimpleIni.h"
+#endif
 
 namespace GameSettings {
 
@@ -173,6 +175,8 @@ bool Entry::SaveToStream(ByteStream* stream) const
          WriteStringToStream(stream, memory_card_2_shared_path) && WriteStringToStream(stream, input_profile_name);
 }
 
+#ifndef LIBRETRO
+
 static void ParseIniSection(Entry* entry, const char* section, const CSimpleIniA& ini)
 {
   for (u32 trait = 0; trait < static_cast<u32>(Trait::Count); trait++)
@@ -467,6 +471,8 @@ void Database::SetEntry(const std::string& code, const std::string& name, const
     m_entries.emplace(code, entry);
 }
 
+#endif
+
 void Entry::ApplySettings(bool display_osd_messages) const
 {
   constexpr float osd_duration = 10.0f;

src/frontend-common/game_settings.h

@@ -82,6 +82,8 @@ struct Entry
   void ApplySettings(bool display_osd_messages) const;
 };
 
+#ifndef LIBRETRO
+
 class Database
 {
 public:
@@ -97,4 +99,6 @@ private:
   std::unordered_map<std::string, Entry> m_entries;
 };
 
+#endif
+
 }; // namespace GameSettings