Partially revert "Check if BP and XF changes actually change values b…

…efore flushing". Dolphin code sucks too much to get optimizations.

This reverts commit 5a77cae.

Fixes issue 5459.
Fixes issue 5606.

Source/Core/VideoCommon/Src/XFStructs.cpp

@@ -121,18 +121,12 @@ void XFRegWritten(int transferSize, u32 baseAddress, u32 *pData)
 		case XFMEM_SETVIEWPORT+3:
 		case XFMEM_SETVIEWPORT+4:
 		case XFMEM_SETVIEWPORT+5:
-			{
-				u8 size = std::min(transferSize * 4, 6 * 4);
-				if (memcmp((u32*)&xfregs + (address - 0x1000), pData + dataIndex, size))
-				{
-					VertexManager::Flush();
-					VertexShaderManager::SetViewportChanged();
-					PixelShaderManager::SetViewportChanged();
-				}
+			VertexManager::Flush();
+			VertexShaderManager::SetViewportChanged();
+			PixelShaderManager::SetViewportChanged();
 
-				nextAddress = XFMEM_SETVIEWPORT + 6;
-				break;
-			}
+			nextAddress = XFMEM_SETVIEWPORT + 6;
+			break;
 
 		case XFMEM_SETPROJECTION:
 		case XFMEM_SETPROJECTION+1:
@@ -141,21 +135,15 @@ void XFRegWritten(int transferSize, u32 baseAddress, u32 *pData)
 		case XFMEM_SETPROJECTION+4:
 		case XFMEM_SETPROJECTION+5:
 		case XFMEM_SETPROJECTION+6:
-			{
-				u8 size = std::min(transferSize * 4, 7 * 4);
-				if (memcmp((u32*)&xfregs + (address - 0x1000), pData + dataIndex, size))
-				{
-					VertexManager::Flush();
-					VertexShaderManager::SetProjectionChanged();
-				}
+			VertexManager::Flush();			
+			VertexShaderManager::SetProjectionChanged();
 
-				nextAddress = XFMEM_SETPROJECTION + 7;
-				break;
-			}
+			nextAddress = XFMEM_SETPROJECTION + 7;
+			break;
 
         case XFMEM_SETNUMTEXGENS: // GXSetNumTexGens
 			if (xfregs.numTexGen.numTexGens != (newValue & 15))
-                VertexManager::Flush();
+				VertexManager::Flush();
             break;
 
 		case XFMEM_SETTEXMTXINFO:
@@ -166,16 +154,10 @@ void XFRegWritten(int transferSize, u32 baseAddress, u32 *pData)
 		case XFMEM_SETTEXMTXINFO+5:
 		case XFMEM_SETTEXMTXINFO+6:
 		case XFMEM_SETTEXMTXINFO+7:
-			{
-				u8 size = std::min(transferSize * 4, 8 * 4);
-				if (memcmp((u32*)&xfregs + (address - 0x1000), pData + dataIndex, size))
-				{
-					VertexManager::Flush();
-				}
+			VertexManager::Flush();
 
-				nextAddress = XFMEM_SETTEXMTXINFO + 8;
-				break;
-			}
+			nextAddress = XFMEM_SETTEXMTXINFO + 8;
+			break;
 
 		case XFMEM_SETPOSMTXINFO:
 		case XFMEM_SETPOSMTXINFO+1:
@@ -185,16 +167,10 @@ void XFRegWritten(int transferSize, u32 baseAddress, u32 *pData)
 		case XFMEM_SETPOSMTXINFO+5:
 		case XFMEM_SETPOSMTXINFO+6:
 		case XFMEM_SETPOSMTXINFO+7:
-			{
-				u8 size = std::min(transferSize * 4, 8 * 4);
-				if (memcmp((u32*)&xfregs + (address - 0x1000), pData + dataIndex, size))
-				{
-					VertexManager::Flush();
-				}
+			VertexManager::Flush();
 
-				nextAddress = XFMEM_SETPOSMTXINFO + 8;
-				break;
-			}
+			nextAddress = XFMEM_SETPOSMTXINFO + 8;
+			break;
 
 		// --------------
 		// Unknown Regs
@@ -264,15 +240,8 @@ void LoadXFReg(u32 transferSize, u32 baseAddress, u32 *pData)
 			transferSize = 0;
 		}
 
-		for (u32 i = 0; i < xfMemTransferSize; ++i)
-		{
-			if (((u32*)&xfmem[xfMemBase])[i] != pData[i])
-			{
-				XFMemWritten(xfMemTransferSize, xfMemBase);
-				memcpy_gc(&xfmem[xfMemBase], pData, xfMemTransferSize * 4);
-				break;
-			}
-		}
+		XFMemWritten(xfMemTransferSize, xfMemBase);
+		memcpy_gc(&xfmem[xfMemBase], pData, xfMemTransferSize * 4);
 
 		pData += xfMemTransferSize;
 	}