Renderer: Change SetBlendState to accept a BlendingState

This decouples the state generation (from the emulated GPU) from the
management of internal backend state.

Source/Core/VideoBackends/D3D/Render.cpp

@@ -640,11 +640,9 @@ void Renderer::ReinterpretPixelData(unsigned int convtype)
                                    FramebufferManager::GetEFBDepthTexture()->GetDSV());
 }
 
-void Renderer::SetBlendMode(bool forceUpdate)
+void Renderer::SetBlendingState(const BlendingState& state)
 {
-  BlendingState state;
-  state.Generate(bpmem);
-  gx_state.blend.hex = state.hex;
+  s_gx_state.blend.hex = state.hex;
 }
 
 // This function has the final picture. We adjust the aspect ratio here.

Source/Core/VideoBackends/D3D/Render.h

@@ -19,7 +19,7 @@ public:
   Renderer();
   ~Renderer() override;
 
-  void SetBlendMode(bool forceUpdate) override;
+  void SetBlendingState(const BlendingState& state) override;
   void SetScissorRect(const EFBRectangle& rc) override;
   void SetGenerationMode() override;
   void SetDepthMode() override;

Source/Core/VideoBackends/OGL/Render.cpp

@@ -1264,11 +1264,8 @@ void Renderer::ReinterpretPixelData(unsigned int convtype)
   }
 }
 
-void Renderer::SetBlendMode(bool forceUpdate)
+void Renderer::SetBlendingState(const BlendingState& state)
 {
-  BlendingState state;
-  state.Generate(bpmem);
-
   bool useDualSource =
       state.usedualsrc && g_ActiveConfig.backend_info.bSupportsDualSourceBlend &&
       (!DriverDetails::HasBug(DriverDetails::BUG_BROKEN_DUAL_SOURCE_BLENDING) || state.dstalpha);
@@ -1791,7 +1788,7 @@ void Renderer::RestoreAPIState()
   SetGenerationMode();
   BPFunctions::SetScissor();
   SetDepthMode();
-  SetBlendMode(true);
+  BPFunctions::SetBlendMode();
   SetViewport();
 
   ProgramShaderCache::BindLastVertexFormat();

Source/Core/VideoBackends/OGL/Render.h

@@ -77,7 +77,7 @@ public:
   void Init();
   void Shutdown();
 
-  void SetBlendMode(bool forceUpdate) override;
+  void SetBlendingState(const BlendingState& state) override;
   void SetScissorRect(const EFBRectangle& rc) override;
   void SetGenerationMode() override;
   void SetDepthMode() override;

Source/Core/VideoBackends/Vulkan/Renderer.cpp

@@ -1340,11 +1340,8 @@ void Renderer::SetDepthMode()
   StateTracker::GetInstance()->SetDepthStencilState(new_ds_state);
 }
 
-void Renderer::SetBlendMode(bool force_update)
+void Renderer::SetBlendingState(const BlendingState& state)
 {
-  BlendingState state;
-  state.Generate(bpmem);
-
   StateTracker::GetInstance()->SetBlendState(state);
 }
 

Source/Core/VideoBackends/Vulkan/Renderer.h

@@ -56,7 +56,7 @@ public:
   void ResetAPIState() override;
   void RestoreAPIState() override;
 
-  void SetBlendMode(bool force_update) override;
+  void SetBlendingState(const BlendingState& state) override;
   void SetScissorRect(const EFBRectangle& rc) override;
   void SetGenerationMode() override;
   void SetDepthMode() override;

Source/Core/VideoCommon/BPFunctions.cpp

@@ -8,6 +8,7 @@
 #include "VideoCommon/BPFunctions.h"
 #include "VideoCommon/BPMemory.h"
 #include "VideoCommon/RenderBase.h"
+#include "VideoCommon/RenderState.h"
 #include "VideoCommon/VertexManagerBase.h"
 #include "VideoCommon/VideoCommon.h"
 #include "VideoCommon/VideoConfig.h"
@@ -72,7 +73,9 @@ void SetDepthMode()
 
 void SetBlendMode()
 {
-  g_renderer->SetBlendMode(false);
+  BlendingState state;
+  state.Generate(bpmem);
+  g_renderer->SetBlendingState(state);
 }
 
 /* Explanation of the magic behind ClearScreen:

Source/Core/VideoCommon/RenderBase.h

@@ -29,6 +29,7 @@
 #include "VideoCommon/AVIDump.h"
 #include "VideoCommon/BPMemory.h"
 #include "VideoCommon/FPSCounter.h"
+#include "VideoCommon/RenderState.h"
 #include "VideoCommon/VideoCommon.h"
 
 class PostProcessingShaderImplementation;
@@ -63,7 +64,7 @@ public:
     PP_EFB_COPY_CLOCKS
   };
 
-  virtual void SetBlendMode(bool forceUpdate) {}
+  virtual void SetBlendingState(const BlendingState& state) {}
   virtual void SetScissorRect(const EFBRectangle& rc) {}
   virtual void SetGenerationMode() {}
   virtual void SetDepthMode() {}