Fix PushStyleVar aliasing the caller's ImVec2 into the style; fix DebugNodeFontGlyph crash

2026-10-08 09:27:57 -05:00
parent 1dd48be9b8
commit 3fca191b86
5 changed files with 61 additions and 7 deletions
@@ -0,0 +1,46 @@
+-- Scrolls the demo with everything open (run with --open) and asserts no style value changes
+local ReplicatedStorage = game:GetService("ReplicatedStorage")
+local RunService = game:GetService("RunService")
+local G = require(ReplicatedStorage:WaitForChild("ImGui"))
+local ImGui = G.ImGui
+ImGui.CreateContext()
+ImGui.GetIO().ConfigFlags = bit32.bor(ImGui.GetIO().ConfigFlags, G.ImGuiConfigFlags.NavEnableKeyboard, G.ImGuiConfigFlags.DockingEnable)
+G.ImGui_ImplRoblox.Init()
+local style = ImGui.GetStyle()
+local function snap()
+    local t = {}
+    for k, v in pairs(style) do
+        if type(v) == "number" then t[k] = tostring(v)
+        elseif type(v) == "table" and getmetatable(v) ~= nil and v.x ~= nil then t[k] = v.x .. "," .. v.y; t[k .. "#id"] = v end
+    end
+    return t
+end
+local ref
+local frame = 0
+RunService.Stepped:Connect(function()
+    frame += 1
+    G.ImGui_ImplRoblox.NewFrame()
+    local w0 = ImGui.FindWindowByName("ImGui Sincerely Demo")
+    if w0 and frame > 2 then
+        local io = ImGui.GetIO()
+        -- sweep the mouse over the window so hover-only paths (tooltips etc.) run
+        io:AddMousePosEvent(w0.Pos.x + 30 + (frame * 37) % math.max(1, w0.Size.x - 60), w0.Pos.y + 40 + (frame * 53) % math.max(1, w0.Size.y - 80))
+        io:AddMouseWheelEvent(0, -1)
+    end
+    ImGui.NewFrame()
+    ImGui.DockSpaceOverViewport(0, nil, G.ImGuiDockNodeFlags.PassthruCentralNode)
+    ImGui.ShowDemoWindow(true)
+    ImGui.Begin("Hello, world!"); ImGui.Checkbox("Demo Window", true); ImGui.SliderFloat("float", 0, 0, 1); ImGui.Button("Button"); ImGui.End()
+    ImGui.EndFrame()
+    local w = ImGui.FindWindowByName("ImGui Sincerely Demo")
+
+    ImGui.Render()
+    G.ImGui_ImplRoblox.RenderDrawData(ImGui.GetDrawData())
+    if frame == 2 then ref = snap() end
+    if frame > 2 and ref then
+        for k, v in pairs(snap()) do
+            if not rawequal(ref[k], v) then error(("style.%s changed %s -> %s at frame %d"):format(k, tostring(ref[k]), tostring(v), frame)) end
+        end
+    end
+    if frame == ARG_FRAMES then print("STYLE OK") end
+end)