Fix some potential issues when blending on EFB formats without alpha.

Clean up state transition tables.

Source/Core/VideoCommon/Src/BPStructs.cpp

@@ -456,6 +456,7 @@ void BPWritten(const BPCmd& bp)
 
 	case BPMEM_ZCOMPARE:      // Set the Z-Compare and EFB pixel format
 		g_renderer->SetColorMask(); // alpha writing needs to be disabled if the new pixel format doesn't have an alpha channel
+		g_renderer->SetBlendMode(true);
 		OnPixelFormatChange();
 		break;