Handle screenshot saving in RenderBase. Removes dependency on D3DX11 for screenshots (texture dumping is still broken).

Source/Core/VideoCommon/Src/RenderBase.h

@@ -110,8 +110,6 @@ public:
 
 	virtual void UpdateViewport() = 0;
 
-	virtual bool SaveScreenshot(const std::string &filename, const TargetRectangle &rc) = 0;
-
 	static unsigned int GetPrevPixelFormat() { return prev_efb_format; }
 	static void StorePixelFormat(unsigned int new_format) { prev_efb_format = new_format; }
 
@@ -123,6 +121,11 @@ protected:
 	static void CheckFifoRecording();
 	static void RecordVideoMemory();
 
+	#if defined(HAVE_WX) && HAVE_WX
+	static void SaveScreenshotOnThread(u8* data, size_t width, size_t height, std::string filename);
+	#endif
+	static void SaveScreenshot(u8* ptr, size_t width, size_t height);
+
 	static volatile bool s_bScreenshot;
 	static std::mutex s_criticalScreenshot;
 	static std::string s_sScreenshotName;