VideoCommon: clean up VertexLoader

Source/Core/VideoCommon/OpcodeDecoding.cpp

@@ -275,13 +275,17 @@ u8* OpcodeDecoder_Run(DataReader src, u32* cycles, bool in_display_list)
 				}
 				else
 				{
-					if (!VertexLoaderManager::RunVertices(
+					int bytes = VertexLoaderManager::RunVertices(
 						cmd_byte & GX_VAT_MASK,   // Vertex loader index (0 - 7)
 						(cmd_byte & GX_PRIMITIVE_MASK) >> GX_PRIMITIVE_SHIFT,
 						num_vertices,
 						src,
-						g_bSkipCurrentFrame))
+						g_bSkipCurrentFrame);
+
+					if (bytes < 0)
 						goto end;
+					else
+						src.Skip(bytes);
 				}
 				totalCycles += 1600;
 			}

Source/Core/VideoCommon/VertexLoader.cpp

@@ -491,12 +491,13 @@ void VertexLoader::ConvertVertices ( int count )
 #endif
 }
 
-void VertexLoader::RunVertices(const VAT& vat, int primitive, int const count)
+int VertexLoader::RunVertices(const VAT& vat, int primitive, int count, DataReader src, DataReader dst)
 {
-	g_vertex_manager_write_ptr = g_vertex_manager->s_pCurBufferPointer;
+	dst.WritePointer(&g_vertex_manager_write_ptr);
+	src.WritePointer(&g_video_buffer_read_ptr);
 	SetupRunVertices(vat, primitive, count);
 	ConvertVertices(count);
-	g_vertex_manager->s_pCurBufferPointer = g_vertex_manager_write_ptr;
+	return count;
 }
 
 void VertexLoader::SetVAT(const VAT& vat)

Source/Core/VideoCommon/VertexLoader.h

@@ -118,7 +118,7 @@ public:
 		{ return m_native_vtx_decl; }
 
 	void SetupRunVertices(const VAT& vat, int primitive, int const count);
-	void RunVertices(const VAT& vat, int primitive, int count);
+	int RunVertices(const VAT& vat, int primitive, int count, DataReader src, DataReader dst);
 
 	// For debugging / profiling
 	void AppendToString(std::string *dest) const;

Source/Core/VideoCommon/VertexLoaderManager.cpp

@@ -130,24 +130,23 @@ static VertexLoader* RefreshLoader(int vtx_attr_group, CPState* state)
 	return loader;
 }
 
-bool RunVertices(int vtx_attr_group, int primitive, int count, DataReader& src, bool skip_drawing)
+int RunVertices(int vtx_attr_group, int primitive, int count, DataReader src, bool skip_drawing)
 {
 	if (!count)
-		return true;
+		return 0;
 
 	CPState* state = &g_main_cp_state;
 
 	VertexLoader* loader = RefreshLoader(vtx_attr_group, state);
 
-	size_t size = count * loader->GetVertexSize();
-	if (src.size() < size)
-		return false;
+	int size = count * loader->GetVertexSize();
+	if ((int)src.size() < size)
+		return -1;
 
 	if (skip_drawing || (bpmem.genMode.cullmode == GenMode::CULL_ALL && primitive < 5))
 	{
 		// if cull mode is CULL_ALL, ignore triangles and quads
-		src.Skip(size);
-		return true;
+		return size;
 	}
 
 	NativeVertexFormat* native = loader->GetNativeVertexFormat();
@@ -157,19 +156,18 @@ bool RunVertices(int vtx_attr_group, int primitive, int count, DataReader& src,
 		VertexManager::Flush();
 	s_current_vtx_fmt = native;
 
-	VertexManager::PrepareForAdditionalData(primitive, count,
+	DataReader dst = VertexManager::PrepareForAdditionalData(primitive, count,
 			loader->GetNativeVertexDeclaration().stride);
 
-
-	src.WritePointer(&g_video_buffer_read_ptr);
-	loader->RunVertices(state->vtx_attr[vtx_attr_group], primitive, count);
-	src = g_video_buffer_read_ptr;
+	count = loader->RunVertices(state->vtx_attr[vtx_attr_group], primitive, count, src, dst);
 
 	IndexGenerator::AddIndices(primitive, count);
 
+	VertexManager::FlushData(count, loader->GetNativeVertexDeclaration().stride);
+
 	ADDSTAT(stats.thisFrame.numPrims, count);
 	INCSTAT(stats.thisFrame.numPrimitiveJoins);
-	return true;
+	return size;
 }
 
 int GetVertexSize(int vtx_attr_group, bool preprocess)

Source/Core/VideoCommon/VertexLoaderManager.h

@@ -18,8 +18,9 @@ namespace VertexLoaderManager
 	void MarkAllDirty();
 
 	int GetVertexSize(int vtx_attr_group, bool preprocess);
-	// Returns false if buf_size is insufficient.
-	bool RunVertices(int vtx_attr_group, int primitive, int count, DataReader& src, bool skip_drawing = false);
+
+	// Returns -1 if buf_size is insufficient, else the amount of bytes consumed
+	int RunVertices(int vtx_attr_group, int primitive, int count, DataReader src, bool skip_drawing = false);
 
 	// For debugging
 	void AppendListToString(std::string *dest);

Source/Core/VideoCommon/VertexManagerBase.cpp

@@ -51,7 +51,7 @@ u32 VertexManager::GetRemainingSize()
 	return (u32)(s_pEndBufferPointer - s_pCurBufferPointer);
 }
 
-void VertexManager::PrepareForAdditionalData(int primitive, u32 count, u32 stride)
+DataReader VertexManager::PrepareForAdditionalData(int primitive, u32 count, u32 stride)
 {
 	// The SSE vertex loader can write up to 4 bytes past the end
 	u32 const needed_vertex_bytes = count * stride + 4;
@@ -83,6 +83,13 @@ void VertexManager::PrepareForAdditionalData(int primitive, u32 count, u32 strid
 		g_vertex_manager->ResetBuffer(stride);
 		IsFlushed = false;
 	}
+
+	return DataReader(s_pCurBufferPointer, s_pEndBufferPointer);
+}
+
+void VertexManager::FlushData(u32 count, u32 stride)
+{
+	s_pCurBufferPointer += count * stride;
 }
 
 u32 VertexManager::GetRemainingIndices(int primitive)

Source/Core/VideoCommon/VertexManagerBase.h

@@ -32,21 +32,14 @@ public:
 	// needs to be virtual for DX11's dtor
 	virtual ~VertexManager();
 
-	static u8 *s_pCurBufferPointer;
-	static u8 *s_pBaseBufferPointer;
-	static u8 *s_pEndBufferPointer;
-
-	static u32 GetRemainingSize();
-	static void PrepareForAdditionalData(int primitive, u32 count, u32 stride);
-	static u32 GetRemainingIndices(int primitive);
+	static DataReader PrepareForAdditionalData(int primitive, u32 count, u32 stride);
+	static void FlushData(u32 count, u32 stride);
 
 	static void Flush();
 
 	virtual ::NativeVertexFormat* CreateNativeVertexFormat() = 0;
 
 	static void DoState(PointerWrap& p);
-	virtual void CreateDeviceObjects(){}
-	virtual void DestroyDeviceObjects(){}
 
 protected:
 	virtual void vDoState(PointerWrap& p) {  }
@@ -55,12 +48,20 @@ protected:
 
 	virtual void ResetBuffer(u32 stride) = 0;
 
+	static u8* s_pCurBufferPointer;
+	static u8* s_pBaseBufferPointer;
+	static u8* s_pEndBufferPointer;
+
+	static u32 GetRemainingSize();
+	static u32 GetRemainingIndices(int primitive);
+
 private:
 	static bool IsFlushed;
 
-	// virtual void Draw(u32 stride, bool alphapass) = 0;
-	// temp
 	virtual void vFlush(bool useDstAlpha) = 0;
+
+	virtual void CreateDeviceObjects() {}
+	virtual void DestroyDeviceObjects() {}
 };
 
 extern VertexManager *g_vertex_manager;