Crate egor 

Egor

A dead simple cross-platform 2D graphics engine

Why Egor?

Egor is dead simple, lightweight and cross-platform. The same code runs on native and web (WASM) with minimal boilerplate. It’s built from small, composable crates on top of modern graphics and windowing abstractions

Egor gives you the essentials for 2D apps and games:

• Efficient 2D rendering (shapes, textures, text)
• Keyboard & mouse input
• Camera & world-space transforms
• Optional egui integration for tools and UIs
• Optional hot-reload during development

Start Here

These are the main types Egor users interact with:

• app::App - application lifecycle and main loop
• render::Graphics - high-level 2D drawing API
• time::FrameTimer - frame timing and delta time
• input::Input - keyboard and mouse state

Minimal Example: Draw a Rectangle

use egor::{app::{App, FrameContext}, render::Graphics};
App::new().run(|FrameContext { gfx, .. }| {
    // start building a rectangle with some defaults
    // draws automatically on `Drop` without an explicit `build()`
    gfx.rect();
});

Crate Layout

egor is a meta crate that re-exports egor_* crates for convenience:

• egor_render - WGPU-based 2D rendering
• egor_app - windowing, input, & event loop
• egor_glue - opinionated layer over egor crates

Cargo Features

Feature	Description	Default
log	Enable logging via egor_app/log	opt-in
hot_reload	Hot-reload support via egor_glue/hot_reload	opt-in
ui	Enable egui integration via egor_glue/ui	opt-in
webgl	WebGL backend for egor_render	opt-in
angle	ANGLE backend for egor_render	opt-in
gles	OpenGL ES backend for egor_render	opt-in
vulkan	Vulkan backend for egor_render	Linux default/opt-in

Notes:

• Windows builds use DX12 by default, Linux builds use Vulkan by default, etc
• Optional backends can be enabled to override defaults or for cross-platform targeting

Modules

app

input

math

render

time