Settings: Add option to disable DSB/fbfetch

src/common/CMakeLists.txt

@@ -71,11 +71,11 @@ if(WIN32)
 endif()
 
 if(MSVC)
-  if(${CPU_ARCH} STREQUAL "x64")
+  if(CPU_ARCH_X64)
     enable_language(ASM_MASM)
     target_sources(common PRIVATE fastjmp_x86.asm)
     set_source_files_properties(fastjmp_x86.asm PROPERTIES COMPILE_FLAGS "/D_M_X86_64")
-  elseif(${CPU_ARCH} STREQUAL "aarch32" OR ${CPU_ARCH} STREQUAL "aarch64")
+  elseif(CPU_ARCH_ARM32 OR CPU_ARCH_ARM64)
     enable_language(ASM_MARMASM)
     target_sources(common PRIVATE fastjmp_arm.asm)
   endif()

src/core/host.cpp

@@ -241,13 +241,19 @@ bool Host::CreateGPUDevice(RenderAPI api)
   Log_InfoPrintf("Trying to create a %s GPU device...", GPUDevice::RenderAPIToString(api));
   g_gpu_device = GPUDevice::CreateDeviceForAPI(api);
 
+  u32 disabled_features = 0;
+  if (g_settings.gpu_disable_dual_source_blend)
+    disabled_features |= GPUDevice::FEATURE_MASK_DUAL_SOURCE_BLEND;
+  if (g_settings.gpu_disable_framebuffer_fetch)
+    disabled_features |= GPUDevice::FEATURE_MASK_FRAMEBUFFER_FETCH;
+
   // TODO: FSUI should always use vsync..
   const bool vsync = System::IsValid() ? System::ShouldUseVSync() : g_settings.video_sync_enabled;
-  if (!g_gpu_device || !g_gpu_device->Create(g_settings.gpu_adapter,
-                                             g_settings.gpu_disable_shader_cache ? std::string_view() :
-                                                                                   std::string_view(EmuFolders::Cache),
-                                             SHADER_CACHE_VERSION, g_settings.gpu_use_debug_device, vsync,
-                                             g_settings.gpu_threaded_presentation))
+  if (!g_gpu_device || !g_gpu_device->Create(
+                         g_settings.gpu_adapter,
+                         g_settings.gpu_disable_shader_cache ? std::string_view() : std::string_view(EmuFolders::Cache),
+                         SHADER_CACHE_VERSION, g_settings.gpu_use_debug_device, vsync,
+                         g_settings.gpu_threaded_presentation, static_cast<GPUDevice::FeatureMask>(disabled_features)))
   {
     Log_ErrorPrintf("Failed to create GPU device.");
     if (g_gpu_device)

src/core/settings.cpp

@@ -181,6 +181,8 @@ void Settings::Load(SettingsInterface& si)
   gpu_multisamples = static_cast<u32>(si.GetIntValue("GPU", "Multisamples", 1));
   gpu_use_debug_device = si.GetBoolValue("GPU", "UseDebugDevice", false);
   gpu_disable_shader_cache = si.GetBoolValue("GPU", "DisableShaderCache", false);
+  gpu_disable_dual_source_blend = si.GetBoolValue("GPU", "DisableDualSourceBlend", false);
+  gpu_disable_framebuffer_fetch = si.GetBoolValue("GPU", "DisableFramebufferFetch", false);
   gpu_per_sample_shading = si.GetBoolValue("GPU", "PerSampleShading", false);
   gpu_use_thread = si.GetBoolValue("GPU", "UseThread", true);
   gpu_use_software_renderer_for_readbacks = si.GetBoolValue("GPU", "UseSoftwareRendererForReadbacks", false);
@@ -437,6 +439,8 @@ void Settings::Save(SettingsInterface& si) const
   si.SetIntValue("GPU", "Multisamples", static_cast<long>(gpu_multisamples));
   si.SetBoolValue("GPU", "UseDebugDevice", gpu_use_debug_device);
   si.SetBoolValue("GPU", "DisableShaderCache", gpu_disable_shader_cache);
+  si.SetBoolValue("GPU", "DisableDualSourceBlend", gpu_disable_dual_source_blend);
+  si.SetBoolValue("GPU", "DisableFramebufferFetch", gpu_disable_framebuffer_fetch);
   si.SetBoolValue("GPU", "PerSampleShading", gpu_per_sample_shading);
   si.SetBoolValue("GPU", "UseThread", gpu_use_thread);
   si.SetBoolValue("GPU", "ThreadedPresentation", gpu_threaded_presentation);

src/core/settings.h

@@ -100,6 +100,8 @@ struct Settings
   bool gpu_threaded_presentation = true;
   bool gpu_use_debug_device = false;
   bool gpu_disable_shader_cache = false;
+  bool gpu_disable_dual_source_blend = false;
+  bool gpu_disable_framebuffer_fetch = false;
   bool gpu_per_sample_shading = false;
   bool gpu_true_color = true;
   bool gpu_scaled_dithering = true;

src/core/system.cpp

@@ -3525,11 +3525,18 @@ void System::CheckForSettingsChanges(const Settings& old_settings)
 {
   if (IsValid() && (g_settings.gpu_renderer != old_settings.gpu_renderer ||
                     g_settings.gpu_use_debug_device != old_settings.gpu_use_debug_device ||
-                    g_settings.gpu_threaded_presentation != old_settings.gpu_threaded_presentation))
+                    g_settings.gpu_threaded_presentation != old_settings.gpu_threaded_presentation ||
+                    g_settings.gpu_disable_shader_cache != old_settings.gpu_disable_shader_cache ||
+                    g_settings.gpu_disable_dual_source_blend != old_settings.gpu_disable_dual_source_blend ||
+                    g_settings.gpu_disable_framebuffer_fetch != old_settings.gpu_disable_framebuffer_fetch))
   {
     // if debug device/threaded presentation change, we need to recreate the whole display
-    const bool recreate_device = (g_settings.gpu_use_debug_device != old_settings.gpu_use_debug_device ||
-                                  g_settings.gpu_threaded_presentation != old_settings.gpu_threaded_presentation);
+    const bool recreate_device =
+      (g_settings.gpu_use_debug_device != old_settings.gpu_use_debug_device ||
+       g_settings.gpu_threaded_presentation != old_settings.gpu_threaded_presentation ||
+       g_settings.gpu_disable_shader_cache != old_settings.gpu_disable_shader_cache ||
+       g_settings.gpu_disable_dual_source_blend != old_settings.gpu_disable_dual_source_blend ||
+       g_settings.gpu_disable_framebuffer_fetch != old_settings.gpu_disable_framebuffer_fetch);
 
     Host::AddIconOSDMessage("RendererSwitch", ICON_FA_PAINT_ROLLER,
                             fmt::format(TRANSLATE_FS("OSDMessage", "Switching to {}{} GPU renderer."),

src/duckstation-qt/advancedsettingswidget.cpp

@@ -340,6 +340,10 @@ void AdvancedSettingsWidget::addTweakOptions()
                         false);
   addBooleanTweakOption(m_dialog, m_ui.tweakOptionTable, tr("Disable Shader Cache"), "GPU", "DisableShaderCache",
                         false);
+  addBooleanTweakOption(m_dialog, m_ui.tweakOptionTable, tr("Disable Dual-Source Blend"), "GPU",
+                        "DisableDualSourceBlend", false);
+  addBooleanTweakOption(m_dialog, m_ui.tweakOptionTable, tr("Disable Framebuffer Fetch"), "GPU",
+                        "DisableFramebufferFetch", false);
 
   addBooleanTweakOption(m_dialog, m_ui.tweakOptionTable, tr("Stretch Display Vertically"), "Display",
                         "StretchVertically", false);
@@ -401,6 +405,8 @@ void AdvancedSettingsWidget::onResetToDefaultClicked()
                            static_cast<int>(Settings::DEFAULT_GPU_MAX_RUN_AHEAD)); // GPU max run-ahead
     setBooleanTweakOption(m_ui.tweakOptionTable, i++, false);                      // Use debug host GPU device
     setBooleanTweakOption(m_ui.tweakOptionTable, i++, false);                      // Disable Shader Cache
+    setBooleanTweakOption(m_ui.tweakOptionTable, i++, false);                      // Disable Dual-Source Blend
+    setBooleanTweakOption(m_ui.tweakOptionTable, i++, false);                      // Disable Framebuffer Fetch
     setBooleanTweakOption(m_ui.tweakOptionTable, i++, false);                      // Stretch Display Vertically
     setBooleanTweakOption(m_ui.tweakOptionTable, i++, true);                       // Increase Timer Resolution
     setChoiceTweakOption(m_ui.tweakOptionTable, i++,
@@ -447,6 +453,9 @@ void AdvancedSettingsWidget::onResetToDefaultClicked()
   sif->DeleteValue("Hacks", "GPUFIFOSize");
   sif->DeleteValue("Hacks", "GPUMaxRunAhead");
   sif->DeleteValue("GPU", "UseDebugDevice");
+  sif->DeleteValue("GPU", "DisableShaderCache");
+  sif->DeleteValue("GPU", "DisableDualSourceBlend");
+  sif->DeleteValue("GPU", "DisableFramebufferFetch");
   sif->DeleteValue("Display", "StretchVertically");
   sif->DeleteValue("Main", "IncreaseTimerResolution");
   sif->DeleteValue("CDROM", "MechaconVersion");

src/util/d3d11_device.cpp

@@ -63,7 +63,8 @@ bool D3D11Device::HasSurface() const
   return static_cast<bool>(m_swap_chain);
 }
 
-bool D3D11Device::CreateDevice(const std::string_view& adapter, bool threaded_presentation)
+bool D3D11Device::CreateDevice(const std::string_view& adapter, bool threaded_presentation,
+                               FeatureMask disabled_features)
 {
   std::unique_lock lock(s_instance_mutex);
 
@@ -131,7 +132,7 @@ bool D3D11Device::CreateDevice(const std::string_view& adapter, bool threaded_pr
                                            sizeof(allow_tearing_supported));
   m_allow_tearing_supported = (SUCCEEDED(hr) && allow_tearing_supported == TRUE);
 
-  SetFeatures();
+  SetFeatures(disabled_features);
 
   if (m_window_info.type != WindowInfo::Type::Surfaceless && !CreateSwapChain())
     return false;
@@ -152,7 +153,7 @@ void D3D11Device::DestroyDevice()
   m_device.Reset();
 }
 
-void D3D11Device::SetFeatures()
+void D3D11Device::SetFeatures(FeatureMask disabled_features)
 {
   const D3D_FEATURE_LEVEL feature_level = m_device->GetFeatureLevel();
 
@@ -169,13 +170,13 @@ void D3D11Device::SetFeatures()
     }
   }
 
-  m_features.dual_source_blend = true;
+  m_features.dual_source_blend = !(disabled_features & FEATURE_MASK_DUAL_SOURCE_BLEND);
   m_features.framebuffer_fetch = false;
   m_features.per_sample_shading = (feature_level >= D3D_FEATURE_LEVEL_10_1);
   m_features.noperspective_interpolation = true;
-  m_features.supports_texture_buffers = true;
+  m_features.supports_texture_buffers = !(disabled_features & FEATURE_MASK_TEXTURE_BUFFERS);
   m_features.texture_buffers_emulated_with_ssbo = false;
-  m_features.geometry_shaders = true;
+  m_features.geometry_shaders = !(disabled_features & FEATURE_MASK_GEOMETRY_SHADERS);
   m_features.partial_msaa_resolve = false;
   m_features.gpu_timing = true;
   m_features.shader_cache = true;

src/util/d3d11_device.h

@@ -111,7 +111,7 @@ public:
   static AdapterAndModeList StaticGetAdapterAndModeList();
 
 protected:
-  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation) override;
+  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation, FeatureMask disabled_features) override;
   void DestroyDevice() override;
 
 private:
@@ -129,7 +129,7 @@ private:
 
   static void GetAdapterAndModeList(AdapterAndModeList* ret, IDXGIFactory5* factory);
 
-  void SetFeatures();
+  void SetFeatures(FeatureMask disabled_features);
 
   bool CheckStagingBufferSize(u32 width, u32 height, DXGI_FORMAT format);
   void DestroyStagingBuffer();

src/util/d3d12_device.cpp

@@ -116,7 +116,7 @@ D3D12Device::ComPtr<ID3D12RootSignature> D3D12Device::CreateRootSignature(const
   return rs;
 }
 
-bool D3D12Device::CreateDevice(const std::string_view& adapter, bool threaded_presentation)
+bool D3D12Device::CreateDevice(const std::string_view& adapter, bool threaded_presentation, FeatureMask disabled_features)
 {
   std::unique_lock lock(s_instance_mutex);
 
@@ -223,7 +223,7 @@ bool D3D12Device::CreateDevice(const std::string_view& adapter, bool threaded_pr
     return false;
   }
 
-  SetFeatures();
+  SetFeatures(disabled_features);
 
   if (!CreateCommandLists() || !CreateDescriptorHeaps())
     return false;
@@ -1156,7 +1156,7 @@ void D3D12Device::InsertDebugMessage(const char* msg)
 #endif
 }
 
-void D3D12Device::SetFeatures()
+void D3D12Device::SetFeatures(FeatureMask disabled_features)
 {
   m_max_texture_size = D3D12_REQ_TEXTURE2D_U_OR_V_DIMENSION;
   m_max_multisamples = 1;
@@ -1172,13 +1172,13 @@ void D3D12Device::SetFeatures()
     }
   }
 
-  m_features.dual_source_blend = true;
+  m_features.dual_source_blend = !(disabled_features & FEATURE_MASK_DUAL_SOURCE_BLEND);
   m_features.framebuffer_fetch = false;
-  m_features.noperspective_interpolation = true;
   m_features.per_sample_shading = true;
-  m_features.supports_texture_buffers = true;
+  m_features.noperspective_interpolation = true;
+  m_features.supports_texture_buffers = !(disabled_features & FEATURE_MASK_TEXTURE_BUFFERS);
   m_features.texture_buffers_emulated_with_ssbo = false;
-  m_features.geometry_shaders = true;
+  m_features.geometry_shaders = !(disabled_features & FEATURE_MASK_GEOMETRY_SHADERS);
   m_features.partial_msaa_resolve = true;
   m_features.gpu_timing = true;
   m_features.shader_cache = true;

src/util/d3d12_device.h

@@ -179,7 +179,8 @@ public:
   void UnbindTextureBuffer(D3D12TextureBuffer* buf);
 
 protected:
-  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation) override;
+  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation,
+                    FeatureMask disabled_features) override;
   void DestroyDevice() override;
 
   bool ReadPipelineCache(const std::string& filename) override;
@@ -215,7 +216,7 @@ private:
 
   static void GetAdapterAndModeList(AdapterAndModeList* ret, IDXGIFactory5* factory);
 
-  void SetFeatures();
+  void SetFeatures(FeatureMask disabled_features);
 
   bool CreateSwapChain();
   bool CreateSwapChainRTV();

src/util/gpu_device.cpp

@@ -223,7 +223,8 @@ bool GPUDevice::IsSameRenderAPI(RenderAPI lhs, RenderAPI rhs)
 }
 
 bool GPUDevice::Create(const std::string_view& adapter, const std::string_view& shader_cache_path,
-                       u32 shader_cache_version, bool debug_device, bool vsync, bool threaded_presentation)
+                       u32 shader_cache_version, bool debug_device, bool vsync, bool threaded_presentation,
+                       FeatureMask disabled_features)
 {
   m_vsync_enabled = vsync;
   m_debug_device = debug_device;
@@ -234,7 +235,7 @@ bool GPUDevice::Create(const std::string_view& adapter, const std::string_view&
     return false;
   }
 
-  if (!CreateDevice(adapter, threaded_presentation))
+  if (!CreateDevice(adapter, threaded_presentation, disabled_features))
   {
     Log_ErrorPrintf("Failed to create device.");
     return false;

src/util/gpu_device.h

@@ -443,6 +443,14 @@ public:
   // TODO: gpu crash handling on present
   using DrawIndex = u16;
 
+  enum FeatureMask : u32
+  {
+    FEATURE_MASK_DUAL_SOURCE_BLEND = (1 << 0),
+    FEATURE_MASK_FRAMEBUFFER_FETCH = (1 << 1),
+    FEATURE_MASK_TEXTURE_BUFFERS = (1 << 2),
+    FEATURE_MASK_GEOMETRY_SHADERS = (1 << 3),
+  };
+
   struct Features
   {
     bool dual_source_blend : 1;
@@ -531,7 +539,7 @@ public:
   virtual RenderAPI GetRenderAPI() const = 0;
 
   bool Create(const std::string_view& adapter, const std::string_view& shader_cache_path, u32 shader_cache_version,
-              bool debug_device, bool vsync, bool threaded_presentation);
+              bool debug_device, bool vsync, bool threaded_presentation, FeatureMask disabled_features);
   void Destroy();
 
   virtual bool HasSurface() const = 0;
@@ -636,7 +644,7 @@ public:
   virtual float GetAndResetAccumulatedGPUTime();
 
 protected:
-  virtual bool CreateDevice(const std::string_view& adapter, bool threaded_presentation) = 0;
+  virtual bool CreateDevice(const std::string_view& adapter, bool threaded_presentation, FeatureMask disabled_features) = 0;
   virtual void DestroyDevice() = 0;
 
   std::string GetShaderCacheBaseName(const std::string_view& type) const;

src/util/metal_device.h

@@ -283,7 +283,7 @@ public:
   static AdapterAndModeList StaticGetAdapterAndModeList();
 
 protected:
-  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation) override;
+  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation, FeatureMask disabled_features) override;
   void DestroyDevice() override;
 
 private:
@@ -298,7 +298,7 @@ private:
 
   ALWAYS_INLINE NSView* GetWindowView() const { return (__bridge NSView*)m_window_info.window_handle; }
 
-  void SetFeatures();
+  void SetFeatures(FeatureMask disabled_features);
   bool LoadShaders();
 
   id<MTLFunction> GetFunctionFromLibrary(id<MTLLibrary> library, NSString* name);

src/util/metal_device.mm

@@ -123,7 +123,7 @@ void MetalDevice::SetVSync(bool enabled)
     [m_layer setDisplaySyncEnabled:enabled];
 }
 
-bool MetalDevice::CreateDevice(const std::string_view& adapter, bool threaded_presentation)
+bool MetalDevice::CreateDevice(const std::string_view& adapter, bool threaded_presentation, FeatureMask disabled_features)
 {
   @autoreleasepool
   {
@@ -166,7 +166,7 @@ bool MetalDevice::CreateDevice(const std::string_view& adapter, bool threaded_pr
     m_queue = [queue retain];
     Log_InfoPrintf("Metal Device: %s", [[m_device name] UTF8String]);
 
-    SetFeatures();
+    SetFeatures(disabled_features);
 
     if (m_window_info.type != WindowInfo::Type::Surfaceless && !CreateLayer())
       return false;
@@ -190,7 +190,7 @@ bool MetalDevice::CreateDevice(const std::string_view& adapter, bool threaded_pr
   }
 }
 
-void MetalDevice::SetFeatures()
+void MetalDevice::SetFeatures(FeatureMask disabled_features)
 {
   // https://gist.github.com/kylehowells/63d0723abc9588eb734cade4b7df660d
   if ([m_device supportsFamily:MTLGPUFamilyMacCatalyst1] || [m_device supportsFamily:MTLGPUFamilyMac1] ||
@@ -211,11 +211,11 @@ void MetalDevice::SetFeatures()
     m_max_multisamples = multisamples;
   }
 
-  m_features.dual_source_blend = true;
-  m_features.framebuffer_fetch = false; // TODO
+  m_features.dual_source_blend = !(disabled_features & FEATURE_MASK_DUAL_SOURCE_BLEND);
+  m_features.framebuffer_fetch = !(disabled_features & FEATURE_MASK_FRAMEBUFFER_FETCH) && false; // TODO
   m_features.per_sample_shading = true;
   m_features.noperspective_interpolation = true;
-  m_features.supports_texture_buffers = true;
+  m_features.supports_texture_buffers = !(disabled_features & FEATURE_MASK_TEXTURE_BUFFERS);
   m_features.texture_buffers_emulated_with_ssbo = true;
   m_features.geometry_shaders = false;
   m_features.partial_msaa_resolve = false;

src/util/opengl_device.cpp

@@ -299,7 +299,8 @@ bool OpenGLDevice::HasSurface() const
   return m_window_info.type != WindowInfo::Type::Surfaceless;
 }
 
-bool OpenGLDevice::CreateDevice(const std::string_view& adapter, bool threaded_presentation)
+bool OpenGLDevice::CreateDevice(const std::string_view& adapter, bool threaded_presentation,
+                                FeatureMask disabled_features)
 {
   m_gl_context = GL::Context::Create(m_window_info);
   if (!m_gl_context)
@@ -348,7 +349,7 @@ bool OpenGLDevice::CreateDevice(const std::string_view& adapter, bool threaded_p
   }
 
   bool buggy_pbo;
-  if (!CheckFeatures(&buggy_pbo))
+  if (!CheckFeatures(&buggy_pbo, disabled_features))
     return false;
 
   if (!CreateBuffers(buggy_pbo))
@@ -360,7 +361,7 @@ bool OpenGLDevice::CreateDevice(const std::string_view& adapter, bool threaded_p
   return true;
 }
 
-bool OpenGLDevice::CheckFeatures(bool* buggy_pbo)
+bool OpenGLDevice::CheckFeatures(bool* buggy_pbo, FeatureMask disabled_features)
 {
   const bool is_gles = m_gl_context->IsGLES();
 
@@ -427,16 +428,18 @@ bool OpenGLDevice::CheckFeatures(bool* buggy_pbo)
   GLint max_dual_source_draw_buffers = 0;
   glGetIntegerv(GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, &max_dual_source_draw_buffers);
   m_features.dual_source_blend =
-    (max_dual_source_draw_buffers > 0) &&
+    !(disabled_features & FEATURE_MASK_DUAL_SOURCE_BLEND) && (max_dual_source_draw_buffers > 0) &&
     (GLAD_GL_VERSION_3_3 || GLAD_GL_ARB_blend_func_extended || GLAD_GL_EXT_blend_func_extended);
 
-  m_features.framebuffer_fetch = (GLAD_GL_EXT_shader_framebuffer_fetch || GLAD_GL_ARM_shader_framebuffer_fetch);
+  m_features.framebuffer_fetch = !(disabled_features & FEATURE_MASK_FRAMEBUFFER_FETCH) &&
+                                 (GLAD_GL_EXT_shader_framebuffer_fetch || GLAD_GL_ARM_shader_framebuffer_fetch);
 
 #ifdef __APPLE__
   // Partial texture buffer uploads appear to be broken in macOS's OpenGL driver.
   m_features.supports_texture_buffers = false;
 #else
-  m_features.supports_texture_buffers = (GLAD_GL_VERSION_3_1 || GLAD_GL_ES_VERSION_3_2);
+  m_features.supports_texture_buffers =
+    !(disabled_features & FEATURE_MASK_TEXTURE_BUFFERS) && (GLAD_GL_VERSION_3_1 || GLAD_GL_ES_VERSION_3_2);
 
   // And Samsung's ANGLE/GLES driver?
   if (std::strstr(reinterpret_cast<const char*>(glGetString(GL_RENDERER)), "ANGLE"))
@@ -493,7 +496,8 @@ bool OpenGLDevice::CheckFeatures(bool* buggy_pbo)
   // noperspective is not supported in GLSL ES.
   m_features.noperspective_interpolation = !is_gles;
 
-  m_features.geometry_shaders = GLAD_GL_VERSION_3_2 || GLAD_GL_ES_VERSION_3_2;
+  m_features.geometry_shaders =
+    !(disabled_features & FEATURE_MASK_GEOMETRY_SHADERS) && (GLAD_GL_VERSION_3_2 || GLAD_GL_ES_VERSION_3_2);
 
   m_features.gpu_timing = !(m_gl_context->IsGLES() &&
                             (!GLAD_GL_EXT_disjoint_timer_query || !glGetQueryObjectivEXT || !glGetQueryObjectui64vEXT));

src/util/opengl_device.h

@@ -122,7 +122,7 @@ public:
   void UnbindPipeline(const OpenGLPipeline* pl);
 
 protected:
-  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation) override;
+  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation, FeatureMask disabled_features) override;
   void DestroyDevice() override;
 
   bool ReadPipelineCache(const std::string& filename) override;
@@ -138,7 +138,7 @@ private:
   static constexpr u32 UNIFORM_BUFFER_SIZE = 2 * 1024 * 1024;
   static constexpr u32 TEXTURE_STREAM_BUFFER_SIZE = 16 * 1024 * 1024;
 
-  bool CheckFeatures(bool* buggy_pbo);
+  bool CheckFeatures(bool* buggy_pbo, FeatureMask disabled_features);
   bool CreateBuffers(bool buggy_pbo);
   void DestroyBuffers();
 

src/util/vulkan_device.cpp

@@ -1601,7 +1601,8 @@ bool VulkanDevice::HasSurface() const
   return static_cast<bool>(m_swap_chain);
 }
 
-bool VulkanDevice::CreateDevice(const std::string_view& adapter, bool threaded_presentation)
+bool VulkanDevice::CreateDevice(const std::string_view& adapter, bool threaded_presentation,
+                                FeatureMask disabled_features)
 {
   std::unique_lock lock(s_instance_mutex);
   bool enable_debug_utils = m_debug_device;
@@ -1704,7 +1705,7 @@ bool VulkanDevice::CreateDevice(const std::string_view& adapter, bool threaded_p
   if (!CreateDevice(surface, enable_validation_layer))
     return false;
 
-  if (!CheckFeatures())
+  if (!CheckFeatures(disabled_features))
   {
     Host::ReportErrorAsync("Error", "Your GPU does not support the required Vulkan features.");
     return false;
@@ -2163,7 +2164,7 @@ void VulkanDevice::InsertDebugMessage(const char* msg)
 #endif
 }
 
-bool VulkanDevice::CheckFeatures()
+bool VulkanDevice::CheckFeatures(FeatureMask disabled_features)
 {
   m_max_texture_size = m_device_properties.limits.maxImageDimension2D;
 
@@ -2193,15 +2194,16 @@ bool VulkanDevice::CheckFeatures()
   else
     m_max_multisamples = 1;
 
-  m_features.dual_source_blend = m_device_features.dualSrcBlend; // TODO: Option to disable
-  m_features.framebuffer_fetch = false; // TODO: Option to disable
+  m_features.dual_source_blend =
+    !(disabled_features & FEATURE_MASK_DUAL_SOURCE_BLEND) && m_device_features.dualSrcBlend;
+  m_features.framebuffer_fetch = /*!(disabled_features & FEATURE_MASK_FRAMEBUFFER_FETCH) && */false;
 
   if (!m_features.dual_source_blend)
     Log_WarningPrintf("Vulkan driver is missing dual-source blending. This will have an impact on performance.");
 
   m_features.noperspective_interpolation = true;
   m_features.per_sample_shading = m_device_features.sampleRateShading;
-  m_features.supports_texture_buffers = true;
+  m_features.supports_texture_buffers = !(disabled_features & FEATURE_MASK_TEXTURE_BUFFERS);
 
 #ifdef __APPLE__
   // Partial texture buffer uploads appear to be broken in macOS/MoltenVK.
@@ -2218,7 +2220,8 @@ bool VulkanDevice::CheckFeatures()
   if (m_features.texture_buffers_emulated_with_ssbo)
     Log_WarningPrintf("Emulating texture buffers with SSBOs.");
 
-  m_features.geometry_shaders = m_device_features.geometryShader;
+  m_features.geometry_shaders =
+    !(disabled_features & FEATURE_MASK_GEOMETRY_SHADERS) && m_device_features.geometryShader;
 
   m_features.partial_msaa_resolve = true;
   m_features.shader_cache = true;

src/util/vulkan_device.h

@@ -220,7 +220,8 @@ public:
   void UnbindTextureBuffer(VulkanTextureBuffer* buf);
 
 protected:
-  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation) override;
+  bool CreateDevice(const std::string_view& adapter, bool threaded_presentation,
+                    FeatureMask disabled_features) override;
   void DestroyDevice() override;
 
   bool ReadPipelineCache(const std::string& filename) override;
@@ -305,7 +306,7 @@ private:
   bool CreateDevice(VkSurfaceKHR surface, bool enable_validation_layer);
   void ProcessDeviceExtensions();
 
-  bool CheckFeatures();
+  bool CheckFeatures(FeatureMask disabled_features);
 
   bool CreateAllocator();
   void DestroyAllocator();

src/util/vulkan_pipeline.cpp

@@ -139,8 +139,8 @@ std::unique_ptr<GPUPipeline> VulkanDevice::CreatePipeline(const GPUPipeline::Gra
     VK_BLEND_FACTOR_ONE_MINUS_SRC1_ALPHA,     // InvSrcAlpha1
     VK_BLEND_FACTOR_DST_ALPHA,                // DstAlpha
     VK_BLEND_FACTOR_ONE_MINUS_DST_ALPHA,      // InvDstAlpha
-    VK_BLEND_FACTOR_CONSTANT_ALPHA,           // ConstantAlpha
-    VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA, // InvConstantAlpha
+    VK_BLEND_FACTOR_CONSTANT_COLOR,           // ConstantAlpha
+    VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_COLOR, // InvConstantAlpha
   }};
 
   static constexpr std::array<VkBlendOp, static_cast<u32>(GPUPipeline::BlendOp::MaxCount)> op_mapping = {{