ErrLookup › emilk/egui

emilk/egui

egui: an easy-to-use immediate mode GUI in Rust that runs on both web and native · Rust · 311 source files

Analyzed at 8fb03c9ae9 on 2026-09-19. 68 documented errors.

Code / Message	Type	Severity	Tags
Tried to update user texture.	panic	error	wgpu, textures, panic, egui
The surface isn't supported by this adapter	panic	critical	wgpu, gpu, surface-configuration, adapter-compatibility
install_surface called before render_state initialization	panic	error	wgpu, winit, initialization-order, panic
winit window doesn't exist	panic	error	panic, viewport, winit, egui, window-lifecycle
Single-use AppCreator has unexpectedly already been taken	panic	error	panic, eframe, app-creator, initialization, single-use
We should always find the root	panic	error	egui, ui, menu, panic
Invalid hex color length: expected 3 (RGB) or 4 (RGBA) bytes	panic	error	macro, hex-color, invalid-argument-format, compile-time
Your app must implement `as_any_mut`, but it doesn't	panic	error	panic, eframe, downcast, app-trait, wasm
Could not create Date	panic	error	date, panic, internal-state, egui
Failed to read	panic	error	rust, filesystem, config, permissions, panic
Multiple SnapshotResults were dropped without being…	panic	error	snapshot-testing, panic, rust, testing
ERROR	console	warning	logging, wasm, web, eframe
Failed to create render state	panic	critical	wgpu, gpu, rendering, panic, testing
Failed to get window handle	panic	error	eframe, glutin, winit, raw-window-handle, panic
failed to spawn thread	panic	error	threading, resources, panic, loader
Tried to update a texture that has not been allocated yet.	panic	error	wgpu, textures, api-misuse, panic
Failed to create image	panic	error	gpu, wgpu, image, panic, testing
viewport doesn't exist	panic	error	eframe, egui, viewport, panic, lifecycle
{}	panic	error	snapshot-testing, panic, rust, testing
Context::root_ui was called while the root Ui was already…	panic	error	egui, gui, borrow-checker, immediate-mode, panic
LayoutJob has no sections	panic	error	text, layout, panic, empty-collection, egui
failed to get current context to resize surface	panic	error	panic, opengl, resize, egui, gl-context
{err}	panic	error	rust, testing, snapshot, image, panic
failed to fit multisamples option of native_options into u8	panic	error	eframe, glutin, config, integer-overflow, panic
No fonts loaded	panic	error	egui, fonts, tessellation, panic
Failed to create staging buffer for index data. Index count	panic	critical	wgpu, gpu, buffer-allocation, panic
Failed to get display handle	panic	error	eframe, glutin, raw-window-handle, surface, panic
app_mut got the wrong type of App	panic	error	rust, downcast, panic, eframe
Failed to query about WebGL2 context	panic	error	wasm, webgl, graphics, browser-environment
Shape::Callback passed to Tessellator	panic	critical	panic, rendering, tessellation, rust
Failed to save screenshot to	panic	error	io, screenshot, file-write-failed, panic
Window did not show	panic	error	viewport, window, ui-state, panic
Error parsing TTF/OTF font file	panic	critical	fonts, panic, parsing, rust
Failed to create staging buffer for vertex data. Vertex…	panic	critical	wgpu, gpu, buffer-allocation, panic
Window was collapsed	panic	error	viewport, window, ui-state, panic
Failed to find in Style::text_styles. Available styles	panic	error	style, fonts, lookup-failed, panic
You must call .update_buffers() before .render()	panic	error	wgpu, rendering, api-misuse, panic
A style should be set for	panic	error	theme, style, missing-initialization, panic
`NotFound` kittest.toml not found	error_code	error	io, configuration, testing, rust
Unsupported value for UPDATE_SNAPSHOTS	panic	error	rust, environment-variable, testing, snapshot, panic
Harness::ui_id is only available for harnesses built with a…	panic	error	rust, testing, gui, egui, panic
Plugin of type not found	panic	error	plugins, missing-registration, panic, lookup-failed
No fonts available until first call to Context::run()	panic	error	egui, fonts, initialization, panic
Pos2 index out of bounds	panic	error	panic, index-out-of-bounds, rust, math
Failed to parse	panic	error	toml, config, parsing, panic
No font data found for	panic	critical	fonts, panic, configuration, rust
should have a Performance	panic	error	wasm, web, browser-environment, panic
should have a Window	panic	error	wasm, web, browser-environment, panic
Vec2b index out of bounds	panic	error	rust, panic, emath, index-out-of-bounds, boolean-vector
Failed to find current viewport in egui RawInput. This is…	panic	error
run_ui should only be called with AppKind::Ui or…	panic	error
failed to construct C string from string for gl proc address	panic	error
failed to spawn egui_inspection connection thread	panic	error
FontFamily:: is not bound to any fonts	panic	error
PluginHandle: plugin is not of the expected type	panic	error
Memory broken: no area for the current viewport	panic	error
No font data found for	panic	error
Should only be called after `col`	panic	error
Vec2 index out of bounds	panic	error
axis must be 0 or 1, got	panic	error
Failed to create temp file	panic	error
Failed to get mapped range	panic	error
Invalid variation axis tag	panic	error
Failed to get interaction	panic	error
Stopwatch is not running	panic	error
Failed to poll device	panic	error
Id must be non-zero.	panic	error
Nonexistent font ID	panic	error