Con-vars, to help with performance

lua/glua-patches/cvars_performance.lua

@@ -0,0 +1,81 @@
+if CLIENT then
+
+    local changeConvarList = {
+        ['cl_threaded_bone_setup'] = '1',
+
+        ['r_queued_ropes'] = '1',
+        ['studio_queue_mode'] = '1',
+
+        ['r_fastzreject'] = '1',
+    }
+
+    local function EnsureDir()
+        if not file.Exists("glua_patches", "DATA") then
+            file.CreateDir("glua_patches")
+        end
+    end
+
+    local function SaveCvars()
+        EnsureDir()
+
+        local save_cvars = {}
+
+        for cvar_name in pairs(changeConvarList) do
+            if ConVarExists(cvar_name) then
+                save_cvars[cvar_name] = GetConVar(cvar_name):GetString()
+            end
+        end
+
+        file.Write("glua_patches/cvars.json", util.TableToJSON(save_cvars, true))
+    end
+
+    local function ApplyCvars()
+        for cvar_name, cvar_value in pairs(changeConvarList) do
+            if ConVarExists(cvar_name) then
+                RunConsoleCommand(cvar_name, cvar_value)
+            end
+        end
+    end
+
+    local function RestoreCvars()
+        if not file.Exists("glua_patches/cvars.json", "DATA") then return end
+
+        local raw = file.Read("glua_patches/cvars.json", "DATA")
+        if not raw then return end
+
+        local savedCvars = util.JSONToTable(raw)
+        if not savedCvars then return end
+
+        for cvar_name, cvar_value in pairs(savedCvars) do
+            RunConsoleCommand(cvar_name, cvar_value)
+        end
+
+        file.Delete("glua_patches/cvars.json")
+    end
+
+    local function CvarsOptimization()
+        SaveCvars()
+        ApplyCvars()
+    end
+
+    local function CvarsOptimizationRollback()
+        RestoreCvars()
+    end
+
+    hook.Add("Initialize", "GLuaPatches_CVars", function()
+        if cv_enable:GetBool() then
+            CvarsOptimization()
+        else
+            CvarsOptimizationRollback()
+        end
+    end)
+
+    cvars.AddChangeCallback("glua_patches_cvars_optimization", function(_, _, newValue)
+        if tobool(newValue) then
+            CvarsOptimization()
+        else
+            CvarsOptimizationRollback()
+        end
+    end, "GLuaPatches_CVars")
+
+end