Overlay the user Shaders/ over the shared one to avoid copying files

Source/Core/DolphinWX/Src/Main.cpp

@@ -253,27 +253,26 @@ bool DolphinApp::OnInit()
 	//TODO : detect the revision and upgrade where necessary
 	File::CopyDir(std::string(SHARED_USER_DIR GAMECONFIG_DIR DIR_SEP),
 			File::GetUserPath(D_GAMECONFIG_IDX));
-	File::CopyDir(std::string(SHARED_USER_DIR SHADERS_DIR DIR_SEP),
-			File::GetUserPath(D_SHADERS_IDX));
 	File::CopyDir(std::string(SHARED_USER_DIR WII_USER_DIR DIR_SEP),
 			File::GetUserPath(D_WIIUSER_IDX));
 	File::CopyDir(std::string(SHARED_USER_DIR OPENCL_DIR DIR_SEP),
 			File::GetUserPath(D_OPENCL_IDX));
 
 	File::CreateFullPath(File::GetUserPath(D_USER_IDX));
-	File::CreateFullPath(File::GetUserPath(D_CONFIG_IDX));
-	File::CreateFullPath(File::GetUserPath(D_GCUSER_IDX));
 	File::CreateFullPath(File::GetUserPath(D_CACHE_IDX));
+	File::CreateFullPath(File::GetUserPath(D_CONFIG_IDX));
 	File::CreateFullPath(File::GetUserPath(D_DUMPDSP_IDX));
 	File::CreateFullPath(File::GetUserPath(D_DUMPTEXTURES_IDX));
-	File::CreateFullPath(File::GetUserPath(D_HIRESTEXTURES_IDX));
-	File::CreateFullPath(File::GetUserPath(D_SCREENSHOTS_IDX));
-	File::CreateFullPath(File::GetUserPath(D_STATESAVES_IDX));
-	File::CreateFullPath(File::GetUserPath(D_MAILLOGS_IDX));
-	File::CreateFullPath(File::GetUserPath(D_MAPS_IDX));
+	File::CreateFullPath(File::GetUserPath(D_GCUSER_IDX));
 	File::CreateFullPath(File::GetUserPath(D_GCUSER_IDX) + USA_DIR DIR_SEP);
 	File::CreateFullPath(File::GetUserPath(D_GCUSER_IDX) + EUR_DIR DIR_SEP);
 	File::CreateFullPath(File::GetUserPath(D_GCUSER_IDX) + JAP_DIR DIR_SEP);
+	File::CreateFullPath(File::GetUserPath(D_HIRESTEXTURES_IDX));
+	File::CreateFullPath(File::GetUserPath(D_MAILLOGS_IDX));
+	File::CreateFullPath(File::GetUserPath(D_MAPS_IDX));
+	File::CreateFullPath(File::GetUserPath(D_SCREENSHOTS_IDX));
+	File::CreateFullPath(File::GetUserPath(D_SHADERS_IDX));
+	File::CreateFullPath(File::GetUserPath(D_STATESAVES_IDX));
 
 	LogManager::Init();
 	SConfig::Init();

Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp

@@ -2,6 +2,7 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
+#include "CommonPaths.h"
 #include "FileUtil.h"
 #include "VideoCommon.h"
 #include "VideoConfig.h"
@@ -150,7 +151,12 @@ void ApplyShader()
 	
 	// loading shader code
 	std::string code;
-	std::string path = File::GetUserPath(D_SHADERS_IDX) + g_ActiveConfig.sPostProcessingShader + ".txt";
+	std::string path = File::GetUserPath(D_SHADERS_IDX) + g_ActiveConfig.sPostProcessingShader + ".glsl";
+	if (!File::Exists(path))
+	{
+		// Fallback to shared user dir
+		path = File::GetSysDirectory() + SHADERS_DIR DIR_SEP + g_ActiveConfig.sPostProcessingShader + ".glsl";
+	}
 	if(!File::ReadFileToString(true, path.c_str(), code)) {
 		ERROR_LOG(VIDEO, "Post-processing shader not found: %s", path.c_str());
 		return;

Source/Plugins/Plugin_VideoOGL/Src/main.cpp

@@ -38,6 +38,7 @@ Make AA apply instantly during gameplay if possible
 
 #include "Globals.h"
 #include "Atomic.h"
+#include "CommonPaths.h"
 #include "Thread.h"
 #include "LogManager.h"
 
@@ -102,26 +103,38 @@ std::string VideoBackend::GetDisplayName()
 
 void GetShaders(std::vector<std::string> &shaders)
 {
+	std::set<std::string> already_found;
+
 	shaders.clear();
-	if (File::IsDirectory(File::GetUserPath(D_SHADERS_IDX)))
+	static const std::string directories[] = {
+		File::GetUserPath(D_SHADERS_IDX),
+		File::GetSysDirectory() + SHADERS_DIR DIR_SEP,
+	};
+	for (size_t i = 0; i < ArraySize(directories); ++i)
 	{
+		if (!File::IsDirectory(directories[i]))
+			continue;
+
 		File::FSTEntry entry;
-		File::ScanDirectoryTree(File::GetUserPath(D_SHADERS_IDX), entry);
-		for (u32 i = 0; i < entry.children.size(); i++) 
+		File::ScanDirectoryTree(directories[i], entry);
+		for (u32 j = 0; j < entry.children.size(); j++)
 		{
-			std::string name = entry.children[i].virtualName.c_str();
-			if (!strcasecmp(name.substr(name.size() - 4).c_str(), ".txt")) {
-				name = name.substr(0, name.size() - 4);
+			std::string name = entry.children[j].virtualName.c_str();
+			if (name.size() < 5)
+				continue;
+			if (strcasecmp(name.substr(name.size() - 5).c_str(), ".glsl"))
+				continue;
+
+			name = name.substr(0, name.size() - 5);
+			if (already_found.find(name) != already_found.end())
+				continue;
+
+			already_found.insert(name);
 			shaders.push_back(name);
 		}
 	}
 	std::sort(shaders.begin(), shaders.end());
 }
-	else
-	{
-		File::CreateDir(File::GetUserPath(D_SHADERS_IDX).c_str());
-	}
-}
 
 void InitBackendInfo()
 {