Application crash after selecting "io.ConfigFlags: ViewportsEnable" checkbox from inside Dear ImGui Demo > Configuration > Configuration #5371
Description
From Config/build Information
Dear ImGui 1.88 WIP (18724)
Branch https://github.com/ocornut/imgui/tree/7b5a8e4f2bbc06eac3b913a7f7df67edff99c538
(Sorry I don't know how to link branches properly)
--------------------------------
sizeof(size_t): 8, sizeof(ImDrawIdx): 2, sizeof(ImDrawVert): 20
define: __cplusplus=199711
define: _WIN32
define: _WIN64
define: _MSC_VER=1932
define: _MSVC_LANG=201402
define: IMGUI_HAS_VIEWPORT
define: IMGUI_HAS_DOCK
--------------------------------
io.BackendPlatformName: imgui_impl_glfw
io.BackendRendererName: imgui_impl_opengl3
io.ConfigFlags: 0x00000000
io.ConfigViewportsNoDecoration
io.ConfigInputTextCursorBlink
io.ConfigWindowsResizeFromEdges
io.ConfigMemoryCompactTimer = 60.0
io.BackendFlags: 0x00001C0E
HasMouseCursors
HasSetMousePos
PlatformHasViewports
HasMouseHoveredViewport
RendererHasVtxOffset
RendererHasViewports
--------------------------------
io.Fonts: 1 fonts, Flags: 0x00000000, TexSize: 512,64
io.DisplaySize: 1280.00,720.00
io.DisplayFramebufferScale: 1.00,1.00
--------------------------------
style.WindowPadding: 8.00,8.00
style.WindowBorderSize: 1.00
style.FramePadding: 4.00,3.00
style.FrameRounding: 0.00
style.FrameBorderSize: 0.00
style.ItemSpacing: 8.00,4.00
style.ItemInnerSpacing: 4.00,4.00
My Issue/Question:
After checking out the latest docking branch, I was exploring the demo window, after checking the "io.ConfigFlags: ViewportsEnable" checkbox inside Configuration>Configuration of the demo window., the program crashes.
All other checkboxs in the configuration menu work as intended.
This is the error that gets printed:
Assertion failed: (g.FrameCount == 0 || g.FrameCount == g.FrameCountPlatformEnded) && "Forgot to call UpdatePlatformWindows() in main loop after EndFrame()? Check examples/ applications for reference.", file ~\imgui.cpp, line 8617
Screenshots/Video
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Standalone, minimal, complete and verifiable example:
I haven't actually writtten any code, this bug happened while using ImGui::ShowDemoWindow(), below is all of the imgui code I used in my project
/* Dear ImGui Setup */
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//Setup Dear ImGui style
ImGui::StyleColorsDark();
//Setup platform/renderer backends
ImGui_ImplGlfw_InitForOpenGL(window, true);
ImGui_ImplOpenGL3_Init("#version 330");
while(!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(0.23, 0.2f, 0.45f, 1.0);
//ImGui Frame start point
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
ImGui::ShowDemoWindow();
//Render ImGui Stuff
ImGui::Render();
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
glfwSwapBuffers(window);
glfwPollEvents();
}
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
This is my first time submitting a bug report on github so I hope I've done everything right