It seems to me like the `pure_glow` example was broken sometime in april because of changes to feature flags. The text simply didn't show up which is due to missing fonts unless you figured out that you needed the `egui/default_fonts` feature flag. This change enforces the use of the `egui/default_fonts` feature flag in this example.
* Re-implement PaintCallbacks With Support for WGPU
This makes breaking changes to the PaintCallback system, but makes it
flexible enough to support both the WGPU and glow backends with custom
rendering.
Also adds a WGPU equivalent to the glow demo for custom painting.
* egui-winit: don't assume window available at init
On Android in particular we can only initialize render state once we
have a native window, after a 'Resumed' lifecycle event. It's still
practical to be able to initialize an egui_winit::State early on
so this adds setters for the max_texture_side and pixels_per_point
that can be called once we have a valid Window and have initialized
a graphics context.
On Wayland, where we need to access the Display for clipboard handling
we now get the Display from the event loop instead of a window.
* egui-wgpu: lazily initialize render + surface state
Enable the renderer and surface state initialization to be deferred
until we know that any winit window we created has a valid native window
and enable the surface state to be updated in case the native window
changes.
In particular these changes help with running on Android where winit
windows will only have a valid native window associated with them
between Resumed and Paused lifecycle events, and so surface creation
(and render state initialization) needs to wait until the first
Resumed event, and the surface needs to be dropped/recreated based on
Paused/Resumed events.
Based on https://github.com/hasenbanck/egui_wgpu_backend
`egui-wgpu` is now an official backend for `eframe` (opt-in).
Use the `wgpu` feature flag on `eframe` and the `NativeOptions::renderer` settings to pick it.
Co-authored-by: Nils Hasenbanck <nils@hasenbanck.de>
Co-authored-by: Sven Niederberger <niederberger@embotech.com>
Co-authored-by: Sven Niederberger <73159570+s-nie@users.noreply.github.com>
* Remove integration name (it is always eframe)
* Remove egui_web crate
* Move egui_web/CHANGELOG.md into eframe/CHANGELOG.md
* Remove all mentions of egui_web
* Remove epi crate and absorb into eframe
* egui_glow: only use puffin on native
* Remove WASM doc from CI (we don't generate it anyways!)
* Remove eframe::epi and improve eframe docs
* Move all epi-related code from egui_glow into eframe
* Move epi stuff from egui-winit into eframe
* Remove mention of epi in egui
* Remove mention of epi in egui_glium
* Remove trait epi::NativeTexture
* Remove confusing mentions of epi
* Refactor egui_web: break up into smaller files
* Clean up feature flags further, and update changelogs
* Clean up check.sh
* Small cleanup of egui_web/Cargo.toml
* Fix dependencies for pure_glow example
* Fix clippy false positive
* Update to rust 1.60.0
* Rename the feature `convert_bytemuck` to `bytemuck`
* Rename the feature `serialize` to `serde`.
* Make use of the "weak dependency" cargo feature
* Set rust-version = "1.60" for all crates
* egui_glow: clipboard, links, persistence & winit are now opt-in features
This can be used, for instance, to:
* Render things to offscreen buffers.
* Read the pixel buffer from the previous frame (glow::Context::read_pixels).
* Render things behind the egui windows.
The purpose of this is to expose `frame.storage()` and `frame.storage_mut()` so users can save/load app state from the `App::update` function, without having to add another parameter to that function.
Changes:
* Added `Frame::storage()` and `Frame::storage_mut()`
* `App::update` now takes a `&mut Frame` rather than just `&Frame`
* `Frame` is no longer `Clone` or `Sync` (doesn't have to be since https://github.com/emilk/egui/pull/1366)
* Rename AlphaImage to FontImage to discourage any other use for it
* Encode FontImage as f32 and postpone the alpha correction
* Interpret alpha coverage in a new, making dark text darker, improving contrast in bright mode
