Added MSAA level availability checks

UnleashedRecomp/gpu/video.cpp

@@ -1736,6 +1736,21 @@ bool Video::CreateHostDevice(const char *sdlVideoDriver)
         ApplyLowEndDefaults();
     }
 
+    const RenderSampleCounts colourSampleCount = g_device->getSampleCountsSupported(RenderFormat::R16G16B16A16_FLOAT);
+    const RenderSampleCounts depthSampleCount  = g_device->getSampleCountsSupported(RenderFormat::D32_FLOAT);
+    const RenderSampleCounts commonSampleCount = colourSampleCount & depthSampleCount;
+
+    // Disable specific MSAA levels if they are not supported.
+    if ((commonSampleCount & RenderSampleCount::COUNT_2) == 0)
+        Config::AntiAliasing.InaccessibleValues.emplace(EAntiAliasing::MSAA2x);
+    if ((commonSampleCount & RenderSampleCount::COUNT_4) == 0)
+        Config::AntiAliasing.InaccessibleValues.emplace(EAntiAliasing::MSAA4x);
+    if ((commonSampleCount & RenderSampleCount::COUNT_8) == 0)
+        Config::AntiAliasing.InaccessibleValues.emplace(EAntiAliasing::MSAA8x);
+
+    // Set Anti-Aliasing to nearest supported level.
+    Config::AntiAliasing.SnapToNearestAccessibleValue(false);
+
     g_queue = g_device->createCommandQueue(RenderCommandListType::DIRECT);
 
     for (auto& commandList : g_commandLists)

UnleashedRecomp/ui/options_menu.cpp

@@ -1043,6 +1043,7 @@ static void DrawConfigOption(int32_t rowIndex, float yOffset, ConfigDef<T>* conf
             }
 
             config->Value = it->first;
+            config->SnapToNearestAccessibleValue(rightTapped);
 
             if (increment || decrement)
                 Game_PlaySound("sys_actstg_pausecursor");
@@ -1271,7 +1272,7 @@ static void DrawConfigOptions()
             DrawConfigOption(rowCount++, yOffset, &Config::VSync, true);
             DrawConfigOption(rowCount++, yOffset, &Config::FPS, true, nullptr, FPS_MIN, 120, FPS_MAX);
             DrawConfigOption(rowCount++, yOffset, &Config::Brightness, true);
-            DrawConfigOption(rowCount++, yOffset, &Config::AntiAliasing, true);
+            DrawConfigOption(rowCount++, yOffset, &Config::AntiAliasing, Config::AntiAliasing.InaccessibleValues.size() != 3, &Localise("Options_Desc_NotAvailableHardware"));
             DrawConfigOption(rowCount++, yOffset, &Config::TransparencyAntiAliasing, Config::AntiAliasing != EAntiAliasing::None, &Localise("Options_Desc_NotAvailableMSAA"));
             DrawConfigOption(rowCount++, yOffset, &Config::ShadowResolution, true);
             DrawConfigOption(rowCount++, yOffset, &Config::GITextureFiltering, true);

UnleashedRecomp/user/config.cpp

@@ -494,6 +494,9 @@ template<typename T, bool isHidden>
 void ConfigDef<T, isHidden>::MakeDefault()
 {
     Value = DefaultValue;
+
+    if constexpr (std::is_enum_v<T>)
+        SnapToNearestAccessibleValue(false);
 }
 
 template<typename T, bool isHidden>
@@ -696,6 +699,51 @@ void ConfigDef<T, isHidden>::GetLocaleStrings(std::vector<std::string_view>& loc
     }
 }
 
+template<typename T, bool isHidden>
+void ConfigDef<T, isHidden>::SnapToNearestAccessibleValue(bool searchUp)
+{
+    if constexpr (std::is_enum_v<T>)
+    {
+        if (EnumTemplateReverse.empty() || InaccessibleValues.empty())
+            return;
+
+        if (EnumTemplateReverse.size() == InaccessibleValues.size())
+        {
+            assert(false && "All enum values are marked inaccessible and the nearest accessible value cannot be determined.");
+            return;
+        }
+
+        auto it = EnumTemplateReverse.find(Value);
+
+        if (it == EnumTemplateReverse.end())
+        {
+            assert(false && "Enum value does not exist in the template.");
+            return;
+        }
+
+        // Skip the enum value if it's marked as inaccessible.
+        while (InaccessibleValues.find(it->first) != InaccessibleValues.end())
+        {
+            if (searchUp)
+            {
+                ++it;
+
+                if (it == EnumTemplateReverse.end())
+                    it = EnumTemplateReverse.begin();
+            }
+            else
+            {
+                if (it == EnumTemplateReverse.begin())
+                    it = EnumTemplateReverse.end();
+
+                --it;
+            }
+        }
+
+        Value = it->first;
+    }
+}
+
 std::filesystem::path Config::GetConfigPath()
 {
     return GetUserPath() / "config.toml";

UnleashedRecomp/user/config.h

@@ -20,6 +20,7 @@ class IConfigDef
     virtual std::string GetDefinition(bool withSection = false) const = 0;
     virtual std::string ToString(bool strWithQuotes = true) const = 0;
     virtual void GetLocaleStrings(std::vector<std::string_view>& localeStrings) const = 0;
+    virtual void SnapToNearestAccessibleValue(bool searchUp) = 0;
 };
 
 #define CONFIG_LOCALE            std::unordered_map<ELanguage, std::tuple<std::string, std::string>>
@@ -158,7 +159,8 @@ class ConfigDef final : public IConfigDef
     CONFIG_LOCALE* Locale{};
     T DefaultValue{};
     T Value{ DefaultValue };
-    std::unordered_map<std::string, T>* EnumTemplate;
+    std::set<T> InaccessibleValues{};
+    std::unordered_map<std::string, T>* EnumTemplate{};
     std::map<T, std::string> EnumTemplateReverse{};
     CONFIG_ENUM_LOCALE(T)* EnumLocale{};
     std::function<void(ConfigDef<T, isHidden>*)> Callback;
@@ -183,25 +185,20 @@ class ConfigDef final : public IConfigDef
     ~ConfigDef();
 
     bool IsHidden() override;
-
     void ReadValue(toml::v3::ex::parse_result& toml) override;
     void MakeDefault() override;
-
     std::string_view GetSection() const override;
     std::string_view GetName() const override;
     std::string GetNameLocalised(ELanguage language) const override;
     std::string GetDescription(ELanguage language) const override;
-
     bool IsDefaultValue() const override;
     const void* GetValue() const override;
-
     std::string GetValueLocalised(ELanguage language) const override;
     std::string GetValueDescription(ELanguage language) const override;
-
     std::string GetDefinition(bool withSection = false) const override;
     std::string ToString(bool strWithQuotes = true) const override;
-
     void GetLocaleStrings(std::vector<std::string_view>& localeStrings) const override;
+    void SnapToNearestAccessibleValue(bool searchUp) override;
 
     operator T() const
     {