VideoConfig/LocalConfig/HotkeyManager: Added hotkeys for switching stereo-3d presets.

Added 3 depth/convergence presets. They are adjustable via (existing) hotkeys - changes to depth and convergence are applied to current preset.
Added 3 hotkeys for activating presets. Added hotkey for toggle between first and second preset.
Added OSD message for convergence/depth changes.
Presets are saved into per-game configs.

5 files changed, 90 insertions, 4 deletions

diff --git a/Source/Core/Core/HotkeyManager.cpp b/Source/Core/Core/HotkeyManager.cpp
index 485c953e41..2b17c6fb37 100644
--- a/Source/Core/Core/HotkeyManager.cpp
+++ b/Source/Core/Core/HotkeyManager.cpp
@@ -116,6 +116,12 @@ const std::string hotkey_labels[] =
 	_trans("Undo Save State"),
 	_trans("Save State"),
 	_trans("Load State"),
+
+	_trans("Toggle 3D Preset"),
+	_trans("Use 3D Preset 1"),
+	_trans("Use 3D Preset 2"),
+	_trans("Use 3D Preset 3"),
+
 };
 static_assert(NUM_HOTKEYS == sizeof(hotkey_labels) / sizeof(hotkey_labels[0]), "Wrong count of hotkey_labels");
 
diff --git a/Source/Core/Core/HotkeyManager.h b/Source/Core/Core/HotkeyManager.h
index 8cecf426aa..1d0f18132a 100644
--- a/Source/Core/Core/HotkeyManager.h
+++ b/Source/Core/Core/HotkeyManager.h
@@ -117,6 +117,11 @@ enum Hotkey
 	HK_SAVE_STATE_FILE,
 	HK_LOAD_STATE_FILE,
 
+	HK_SWITCH_STEREOSCOPY_PRESET,
+	HK_USE_STEREOSCOPY_PRESET_0,
+	HK_USE_STEREOSCOPY_PRESET_1,
+	HK_USE_STEREOSCOPY_PRESET_2,
+
 	NUM_HOTKEYS,
 };
 
diff --git a/Source/Core/DolphinWX/Frame.cpp b/Source/Core/DolphinWX/Frame.cpp
index d367f94c9b..fef41bbce2 100644
--- a/Source/Core/DolphinWX/Frame.cpp
+++ b/Source/Core/DolphinWX/Frame.cpp
@@ -1416,29 +1416,73 @@ void CFrame::ParseHotkeys()
 	{
 		State::Load(g_saveSlot);
 	}
-	if (IsHotkey(HK_DECREASE_DEPTH, true))
+
+	auto savePreset = [](const std::string& param, int value)
+	{
+		IniFile localIni = SConfig::GetInstance().LoadLocalGameIni();
+		localIni.GetOrCreateSection("Enhancements")->Set(
+			StringFromFormat("Stereo%s_%d", param.c_str(), g_Config.iStereoActivePreset),
+			value);
+		std::string iniFileName = File::GetUserPath(D_GAMESETTINGS_IDX) + SConfig::GetInstance().GetUniqueID() + ".ini";
+		OSD::AddMessage(StringFromFormat("%s: %d", param.c_str(), value) , 1000);
+		localIni.Save(iniFileName);
+	};
+
+	if (IsHotkey(HK_DECREASE_DEPTH))
 	{
 		if (--g_Config.iStereoDepth < 0)
 			g_Config.iStereoDepth = 0;
+		g_Config.oStereoPresets[g_Config.iStereoActivePreset].depth = g_Config.iStereoDepth;
+		savePreset("Depth", g_Config.iStereoDepth);
 	}
-	if (IsHotkey(HK_INCREASE_DEPTH, true))
+	if (IsHotkey(HK_INCREASE_DEPTH))
 	{
 		if (++g_Config.iStereoDepth > 100)
 			g_Config.iStereoDepth = 100;
+		g_Config.oStereoPresets[g_Config.iStereoActivePreset].depth = g_Config.iStereoDepth;
+		savePreset("Depth", g_Config.iStereoDepth);
 	}
-	if (IsHotkey(HK_DECREASE_CONVERGENCE, true))
+	if (IsHotkey(HK_DECREASE_CONVERGENCE))
 	{
 		g_Config.iStereoConvergence -= 5;
 		if (g_Config.iStereoConvergence < 0)
 			g_Config.iStereoConvergence = 0;
+		g_Config.oStereoPresets[g_Config.iStereoActivePreset].convergence = g_Config.iStereoConvergence;
+		savePreset("Convergence", g_Config.iStereoConvergence);
 	}
-	if (IsHotkey(HK_INCREASE_CONVERGENCE, true))
+	if (IsHotkey(HK_INCREASE_CONVERGENCE))
 	{
 		g_Config.iStereoConvergence += 5;
 		if (g_Config.iStereoConvergence > 500)
 			g_Config.iStereoConvergence = 500;
+		g_Config.oStereoPresets[g_Config.iStereoActivePreset].convergence = g_Config.iStereoConvergence;
+		savePreset("Convergence", g_Config.iStereoConvergence);
 	}
 
+	if (IsHotkey(HK_SWITCH_STEREOSCOPY_PRESET))
+	{
+		g_Config.iStereoActivePreset = !g_Config.iStereoActivePreset;
+		g_Config.iStereoConvergence = g_Config.oStereoPresets[g_Config.iStereoActivePreset].convergence;
+		g_Config.iStereoDepth = g_Config.oStereoPresets[g_Config.iStereoActivePreset].depth;
+	}
+	if (IsHotkey(HK_USE_STEREOSCOPY_PRESET_0))
+	{
+		g_Config.iStereoActivePreset = 0;
+		g_Config.iStereoConvergence = g_Config.oStereoPresets[g_Config.iStereoActivePreset].convergence;
+		g_Config.iStereoDepth = g_Config.oStereoPresets[g_Config.iStereoActivePreset].depth;
+	}
+	if (IsHotkey(HK_USE_STEREOSCOPY_PRESET_1))
+	{
+		g_Config.iStereoActivePreset = 1;
+		g_Config.iStereoConvergence = g_Config.oStereoPresets[g_Config.iStereoActivePreset].convergence;
+		g_Config.iStereoDepth = g_Config.oStereoPresets[g_Config.iStereoActivePreset].depth;
+	}
+	if (IsHotkey(HK_USE_STEREOSCOPY_PRESET_2))
+	{
+		g_Config.iStereoActivePreset = 2;
+		g_Config.iStereoConvergence = g_Config.oStereoPresets[g_Config.iStereoActivePreset].convergence;
+		g_Config.iStereoDepth = g_Config.oStereoPresets[g_Config.iStereoActivePreset].depth;
+	}
 	static float debugSpeed = 1.0f;
 	if (IsHotkey(HK_FREELOOK_DECREASE_SPEED, true))
 		debugSpeed /= 1.1f;
diff --git a/Source/Core/VideoCommon/VideoConfig.cpp b/Source/Core/VideoCommon/VideoConfig.cpp
index 6aadfbf075..ef04dc8287 100644
--- a/Source/Core/VideoCommon/VideoConfig.cpp
+++ b/Source/Core/VideoCommon/VideoConfig.cpp
@@ -96,6 +96,16 @@ void VideoConfig::Load(const std::string& ini_file)
 	enhancements->Get("StereoConvergence", &iStereoConvergence, 20);
 	enhancements->Get("StereoSwapEyes", &bStereoSwapEyes, false);
 
+	//currently these settings are not saved in global config, so we could've initialized them directly
+	for (int i = 0; i < oStereoPresets.size(); ++i)
+	{
+		enhancements->Get(StringFromFormat("StereoConvergence_%d", i), &oStereoPresets[i].depth, iStereoConvergence);
+		enhancements->Get(StringFromFormat("StereoDepth_%d", i), &oStereoPresets[i].convergence, iStereoDepth);
+	}
+	enhancements->Get("StereoActivePreset", &iStereoActivePreset, 0);
+	iStereoConvergence = oStereoPresets[iStereoActivePreset].convergence;
+	iStereoDepth = oStereoPresets[iStereoActivePreset].depth;
+
 	IniFile::Section* hacks = iniFile.GetOrCreateSection("Hacks");
 	hacks->Get("EFBAccessEnable", &bEFBAccessEnable, true);
 	hacks->Get("BBoxEnable", &bBBoxEnable, false);
@@ -200,6 +210,17 @@ void VideoConfig::GameIniLoad()
 	CHECK_SETTING("Video_Enhancements", "StereoConvergence", iStereoConvergence);
 	CHECK_SETTING("Video_Enhancements", "StereoSwapEyes", bStereoSwapEyes);
 
+	//these are not overrides, they are per-game settings, hence no warning
+	IniFile::Section* enhancements = iniFile.GetOrCreateSection("Enhancements");
+	for (int i = 0; i < oStereoPresets.size(); ++i)
+	{
+		enhancements->Get(StringFromFormat("StereoConvergence_%d", i), &oStereoPresets[i].depth, iStereoConvergence);
+		enhancements->Get(StringFromFormat("StereoDepth_%d", i), &oStereoPresets[i].convergence, iStereoDepth);
+	}
+	enhancements->Get("StereoActivePreset", &iStereoActivePreset, 0);
+	iStereoConvergence = oStereoPresets[iStereoActivePreset].convergence;
+	iStereoDepth = oStereoPresets[iStereoActivePreset].depth;
+
 	CHECK_SETTING("Video_Stereoscopy", "StereoEFBMonoDepth", bStereoEFBMonoDepth);
 	CHECK_SETTING("Video_Stereoscopy", "StereoDepthPercentage", iStereoDepthPercentage);
 	CHECK_SETTING("Video_Stereoscopy", "StereoConvergenceMinimum", iStereoConvergenceMinimum);
diff --git a/Source/Core/VideoCommon/VideoConfig.h b/Source/Core/VideoCommon/VideoConfig.h
index 489929f5fd..3955e1fb2f 100644
--- a/Source/Core/VideoCommon/VideoConfig.h
+++ b/Source/Core/VideoCommon/VideoConfig.h
@@ -51,6 +51,14 @@ enum StereoMode
 	STEREO_3DVISION
 };
 
+constexpr int STEREOSCOPY_PRESETS_NUM = 3;
+
+struct StereoscopyPreset final
+{
+	int depth;
+	int convergence;
+};
+
 // NEVER inherit from this class.
 struct VideoConfig final
 {
@@ -84,6 +92,8 @@ struct VideoConfig final
 	int iStereoDepth;
 	int iStereoConvergence;
 	bool bStereoSwapEyes;
+	std::array<StereoscopyPreset, STEREOSCOPY_PRESETS_NUM> oStereoPresets;
+	int iStereoActivePreset;
 
 	// Information
 	bool bShowFPS;