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https://github.com/ghostty-org/ghostty.git
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7db8346fca
Fixes #10406 ImGui_ImplOpenGL3_Shutdown() calls imgl3wShutdown() which dlcloses the GL library handles but does not zero out the imgl3w function pointer table (imgl3wProcs). When a GLArea is re-realized (e.g. during reparenting), ImGui_ImplOpenGL3_Init() calls ImGui_ImplOpenGL3_InitLoader() which checks "if (glGetIntegerv == nullptr)". Since the stale pointers are non-null, it skips re-initialization. The next GL call through a dangling function pointer causes a SIGSEGV. Fix this by introducing ImGui_ImplOpenGL3_ShutdownWithLoaderCleanup() which calls the normal shutdown and then zeroes the imgl3wProcs table, forcing the next Init to reload GL function pointers via imgl3wInit(). Also properly destroy the ImGui context and reset widget state in glAreaUnrealize so re-realize starts clean. This was extra but was probably leaking memory.
78 lines
4.5 KiB
Zig
78 lines
4.5 KiB
Zig
pub const build_options = @import("build_options");
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pub const c = @cImport({
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// This is set during the build so it also has to be set
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// during import time to get the right types. Without this
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// you get stack size mismatches on some structs.
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@cDefine("IMGUI_USE_WCHAR32", "1");
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@cDefine("IMGUI_HAS_DOCK", "1");
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@cInclude("dcimgui.h");
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});
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// OpenGL3 backend
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pub extern fn ImGui_ImplOpenGL3_Init(glsl_version: ?[*:0]const u8) callconv(.c) bool;
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pub extern fn ImGui_ImplOpenGL3_Shutdown() callconv(.c) void;
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pub extern fn ImGui_ImplOpenGL3_NewFrame() callconv(.c) void;
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pub extern fn ImGui_ImplOpenGL3_RenderDrawData(draw_data: *c.ImDrawData) callconv(.c) void;
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// Extension: shutdown the OpenGL3 backend and zero out the imgl3w function
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// pointer table so a subsequent Init can re-initialize the loader.
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pub extern fn ImGui_ImplOpenGL3_ShutdownWithLoaderCleanup() callconv(.c) void;
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// Metal backend
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pub extern fn ImGui_ImplMetal_Init(device: *anyopaque) callconv(.c) bool;
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pub extern fn ImGui_ImplMetal_Shutdown() callconv(.c) void;
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pub extern fn ImGui_ImplMetal_NewFrame(render_pass_descriptor: *anyopaque) callconv(.c) void;
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pub extern fn ImGui_ImplMetal_RenderDrawData(draw_data: *c.ImDrawData, command_buffer: *anyopaque, command_encoder: *anyopaque) callconv(.c) void;
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// OSX
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pub extern fn ImGui_ImplOSX_Init(*anyopaque) callconv(.c) bool;
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pub extern fn ImGui_ImplOSX_Shutdown() callconv(.c) void;
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pub extern fn ImGui_ImplOSX_NewFrame(*anyopaque) callconv(.c) void;
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// Internal API types and functions from dcimgui_internal.h
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// We declare these manually because the internal header contains bitfields
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// that Zig's cImport cannot translate.
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pub const ImGuiDockNodeFlagsPrivate = struct {
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pub const DockSpace: c.ImGuiDockNodeFlags = 1 << 10;
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pub const CentralNode: c.ImGuiDockNodeFlags = 1 << 11;
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pub const NoTabBar: c.ImGuiDockNodeFlags = 1 << 12;
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pub const HiddenTabBar: c.ImGuiDockNodeFlags = 1 << 13;
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pub const NoWindowMenuButton: c.ImGuiDockNodeFlags = 1 << 14;
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pub const NoCloseButton: c.ImGuiDockNodeFlags = 1 << 15;
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pub const NoResizeX: c.ImGuiDockNodeFlags = 1 << 16;
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pub const NoResizeY: c.ImGuiDockNodeFlags = 1 << 17;
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pub const DockedWindowsInFocusRoute: c.ImGuiDockNodeFlags = 1 << 18;
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pub const NoDockingSplitOther: c.ImGuiDockNodeFlags = 1 << 19;
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pub const NoDockingOverMe: c.ImGuiDockNodeFlags = 1 << 20;
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pub const NoDockingOverOther: c.ImGuiDockNodeFlags = 1 << 21;
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pub const NoDockingOverEmpty: c.ImGuiDockNodeFlags = 1 << 22;
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};
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pub extern fn ImGui_DockBuilderDockWindow(window_name: [*:0]const u8, node_id: c.ImGuiID) callconv(.c) void;
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pub extern fn ImGui_DockBuilderGetNode(node_id: c.ImGuiID) callconv(.c) ?*anyopaque;
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pub extern fn ImGui_DockBuilderGetCentralNode(node_id: c.ImGuiID) callconv(.c) ?*anyopaque;
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pub extern fn ImGui_DockBuilderAddNode() callconv(.c) c.ImGuiID;
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pub extern fn ImGui_DockBuilderAddNodeEx(node_id: c.ImGuiID, flags: c.ImGuiDockNodeFlags) callconv(.c) c.ImGuiID;
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pub extern fn ImGui_DockBuilderRemoveNode(node_id: c.ImGuiID) callconv(.c) void;
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pub extern fn ImGui_DockBuilderRemoveNodeDockedWindows(node_id: c.ImGuiID) callconv(.c) void;
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pub extern fn ImGui_DockBuilderRemoveNodeDockedWindowsEx(node_id: c.ImGuiID, clear_settings_refs: bool) callconv(.c) void;
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pub extern fn ImGui_DockBuilderRemoveNodeChildNodes(node_id: c.ImGuiID) callconv(.c) void;
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pub extern fn ImGui_DockBuilderSetNodePos(node_id: c.ImGuiID, pos: c.ImVec2) callconv(.c) void;
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pub extern fn ImGui_DockBuilderSetNodeSize(node_id: c.ImGuiID, size: c.ImVec2) callconv(.c) void;
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pub extern fn ImGui_DockBuilderSplitNode(node_id: c.ImGuiID, split_dir: c.ImGuiDir, size_ratio_for_node_at_dir: f32, out_id_at_dir: *c.ImGuiID, out_id_at_opposite_dir: *c.ImGuiID) callconv(.c) c.ImGuiID;
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pub extern fn ImGui_DockBuilderCopyDockSpace(src_dockspace_id: c.ImGuiID, dst_dockspace_id: c.ImGuiID, in_window_remap_pairs: *c.ImVector_const_charPtr) callconv(.c) void;
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pub extern fn ImGui_DockBuilderCopyNode(src_node_id: c.ImGuiID, dst_node_id: c.ImGuiID, out_node_remap_pairs: *c.ImVector_ImGuiID) callconv(.c) void;
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pub extern fn ImGui_DockBuilderCopyWindowSettings(src_name: [*:0]const u8, dst_name: [*:0]const u8) callconv(.c) void;
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pub extern fn ImGui_DockBuilderFinish(node_id: c.ImGuiID) callconv(.c) void;
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// Extension functions from ext.cpp
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pub const ext = struct {
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pub extern fn ImFontConfig_ImFontConfig(self: *c.ImFontConfig) callconv(.c) void;
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pub extern fn ImGuiStyle_ImGuiStyle(self: *c.ImGuiStyle) callconv(.c) void;
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};
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test {
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_ = c;
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}
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