do the previous commit again but better

src/GPU3D.cpp

@@ -569,20 +569,7 @@ void GPU3D::DoSavestate(Savestate* file) noexcept
     }
 
     // save any renderer state that can persist through frames
-    if (softRenderer)
-    {
-        file->VarArray(softRenderer->StencilBuffer, sizeof(SoftRenderer::StencilBuffer));
-        file->VarArray(softRenderer->ShadowRendered, sizeof(SoftRenderer::ShadowRendered));
-        file->VarArray(softRenderer->ShadowRenderedi, sizeof(SoftRenderer::ShadowRenderedi));
-    }
-    else
-    {
-        u8 ph[256*2] {};
-        // placeholders for renderers that don't support the same variables
-        file->VarArray(ph, sizeof(SoftRenderer::StencilBuffer));
-        file->VarArray(ph, sizeof(SoftRenderer::ShadowRendered));
-        file->VarArray(ph, sizeof(SoftRenderer::ShadowRenderedi));
-    }
+    CurrentRenderer->DoSavestate(file);
 
     if (softRenderer && softRenderer->IsThreaded())
     {

src/GPU3D.h

@@ -346,6 +346,7 @@ class Renderer3D
     Renderer3D& operator=(const Renderer3D&) = delete;
 
     virtual void Reset(GPU& gpu) = 0;
+    virtual void DoSavestate(Savestate* file) = 0;
 
     // This "Accelerated" flag currently communicates if the framebuffer should
     // be allocated differently and other little misc handlers. Ideally there

src/GPU3D_Compute.cpp

@@ -295,6 +295,23 @@ void ComputeRenderer::Reset(GPU& gpu)
     Texcache.Reset();
 }
 
+void ComputeRenderer::DoSavestate(Savestate* file)
+{
+    // placeholder in case we need to add anything serializable later on
+    /*
+    bool secfound = file->Section("CR3D", true);
+
+    if (secfound)
+    {
+
+    }
+    else
+    {
+
+    }
+    */
+}
+
 void ComputeRenderer::SetRenderSettings(int scale, bool highResolutionCoordinates)
 {
     CurGLCompositor.SetScaleFactor(scale);

src/GPU3D_Compute.h

@@ -42,6 +42,7 @@ class ComputeRenderer : public Renderer3D
     ~ComputeRenderer() override;
 
     void Reset(GPU& gpu) override;
+    void DoSavestate(Savestate* file) override;
 
     void SetRenderSettings(int scale, bool highResolutionCoordinates);
 

src/GPU3D_OpenGL.cpp

@@ -317,6 +317,23 @@ void GLRenderer::Reset(GPU& gpu)
     // except there's no such method right now.
 }
 
+void GLRenderer::DoSavestate(Savestate* file)
+{
+    // placeholder in case we need to add anything serializable later on
+    /*
+    bool secfound = file->Section("GL3D", true);
+
+    if (secfound)
+    {
+
+    }
+    else
+    {
+
+    }
+    */
+}
+
 void GLRenderer::SetBetterPolygons(bool betterpolygons) noexcept
 {
     SetRenderSettings(betterpolygons, ScaleFactor);

src/GPU3D_OpenGL.h

@@ -32,6 +32,7 @@ class GLRenderer : public Renderer3D
 public:
     ~GLRenderer() override;
     void Reset(GPU& gpu) override;
+    void DoSavestate(Savestate* file) override;
 
     void SetRenderSettings(bool betterpolygons, int scale) noexcept;
     void SetBetterPolygons(bool betterpolygons) noexcept;

src/GPU3D_Soft.cpp

@@ -131,6 +131,24 @@ void SoftRenderer::Reset(GPU& gpu)
     EnableRenderThread();
 }
 
+void SoftRenderer::DoSavestate(Savestate* file)
+{
+    bool secfound = file->Section("SW3D", true);
+
+    if (secfound)
+    {
+        file->VarArray(StencilBuffer, sizeof(StencilBuffer));
+        file->VarArray(ShadowRendered, sizeof(ShadowRendered));
+        file->VarArray(ShadowRenderedi, sizeof(ShadowRenderedi));
+    }
+    else
+    {
+        memset(StencilBuffer, 0, sizeof(StencilBuffer));
+        memset(ShadowRendered, 0, sizeof(ShadowRendered));
+        memset(ShadowRenderedi, 0, sizeof(ShadowRenderedi));
+    }
+}
+
 void SoftRenderer::SetThreaded(bool threaded, GPU& gpu) noexcept
 {
     if (Threaded != threaded)

src/GPU3D_Soft.h

@@ -44,6 +44,7 @@ class SoftRenderer : public Renderer3D
     SoftRenderer() noexcept;
     ~SoftRenderer() override;
     void Reset(GPU& gpu) override;
+    void DoSavestate(Savestate* file) override;
 
     void SetThreaded(bool threaded, GPU& gpu) noexcept;
     [[nodiscard]] bool IsThreaded() const noexcept { return Threaded; }

src/Savestate.cpp

@@ -153,9 +153,9 @@ Savestate::~Savestate()
     }
 }
 
-void Savestate::Section(const char* magic)
+bool Savestate::Section(const char* magic, bool noerror)
 {
-    if (Error || finished) return;
+    if (Error || finished) return false;
 
     if (Saving)
     {
@@ -174,6 +174,7 @@ void Savestate::Section(const char* magic)
         // The 8 bytes afterward are reserved, so we skip them.
         Var32(&zero);
         Var32(&zero);
+        return true;
     }
     else
     {
@@ -182,12 +183,14 @@ void Savestate::Section(const char* magic)
         if (section_offset != NO_SECTION)
         {
             buffer_offset = section_offset;
+            return true;
         }
-        else
+        else if (!noerror)
         {
             Log(LogLevel::Error, "savestate: section %s not found. blarg\n", magic);
             Error = true;
         }
+        return false;
     }
 }
 
@@ -378,7 +381,6 @@ u32 Savestate::FindSection(const char* magic) const
     }
 
     // We've reached the end of the file without finding the requested section...
-    Log(LogLevel::Error, "savestate: section %s not found. blarg\n", magic);
     return NO_SECTION;
 }
 

src/Savestate.h

@@ -44,7 +44,7 @@ class Savestate
 
     u32 CurSection;
 
-    void Section(const char* magic);
+    bool Section(const char* magic, bool noerror = false);
 
     void Var8(u8* var)
     {