Remove epi backend from egui_glow (#1361)

Author: emilk

Cargo.lock

@@ -3,6 +3,8 @@ All notable changes to the `egui_glium` integration will be noted in this file.
 
 
 ## Unreleased
+* Remove "epi" feature ([#1361](https://github.com/emilk/egui/pull/1361)).
+* Remove need for `trait epi::NativeTexture` to use the `fn register_native_texture/replace_native_texture` ([#1361](https://github.com/emilk/egui/pull/1361)).
 
 
 ## 0.17.0 - 2022-02-22

egui_glium/CHANGELOG.md

@@ -38,13 +38,7 @@ default_fonts = ["egui/default_fonts"]
 links = ["egui-winit/links"]
 
 # enable persisting native window options and egui memory
-persistence = [
-  "egui-winit/persistence",
-  "egui/persistence",
-  "epi",                    # also implied by the lines below, see https://github.com/rust-lang/cargo/issues/8832
-  "epi/file_storage",
-  "epi/persistence",
-]
+persistence = ["egui-winit/persistence", "egui/persistence"]
 
 # experimental support for a screen reader
 screen_reader = ["egui-winit/screen_reader"]
@@ -55,10 +49,7 @@ egui = { version = "0.17.0", path = "../egui", default-features = false, feature
   "convert_bytemuck",
   "single_threaded",
 ] }
-egui-winit = { version = "0.17.0", path = "../egui-winit", default-features = false, features = [
-  "epi",
-] }
-epi = { version = "0.17.0", path = "../epi", optional = true }
+egui-winit = { version = "0.17.0", path = "../egui-winit", default-features = false }
 
 ahash = "0.7"
 bytemuck = "1.7"

egui_glium/Cargo.toml

@@ -2,7 +2,6 @@
 
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
 
-use epi::NativeTexture;
 use glium::glutin;
 
 fn create_display(event_loop: &glutin::event_loop::EventLoop<()>) -> glium::Display {

egui_glium/examples/native_texture.rs

@@ -90,11 +90,6 @@
 mod painter;
 pub use painter::Painter;
 
-#[cfg(feature = "epi")]
-mod epi_backend;
-#[cfg(feature = "epi")]
-pub use epi_backend::{run, NativeOptions};
-
 pub use egui_winit;
 
 // ----------------------------------------------------------------------------

egui_glium/src/epi_backend.rs

@@ -21,7 +21,6 @@ pub struct Painter {
 
     textures: AHashMap<egui::TextureId, Rc<SrgbTexture2d>>,
 
-    #[cfg(feature = "epi")]
     /// [`egui::TextureId::User`] index
     next_native_tex_id: u64,
 }
@@ -56,7 +55,6 @@ impl Painter {
             max_texture_side,
             program,
             textures: Default::default(),
-            #[cfg(feature = "epi")]
             next_native_tex_id: 0,
         }
     }
@@ -266,20 +264,15 @@ impl Painter {
     fn get_texture(&self, texture_id: egui::TextureId) -> Option<&SrgbTexture2d> {
         self.textures.get(&texture_id).map(|rc| rc.as_ref())
     }
-}
-
-#[cfg(feature = "epi")]
-impl epi::NativeTexture for Painter {
-    type Texture = Rc<SrgbTexture2d>;
 
-    fn register_native_texture(&mut self, native: Self::Texture) -> egui::TextureId {
+    pub fn register_native_texture(&mut self, native: Rc<SrgbTexture2d>) -> egui::TextureId {
         let id = egui::TextureId::User(self.next_native_tex_id);
         self.next_native_tex_id += 1;
         self.textures.insert(id, native);
         id
     }
 
-    fn replace_native_texture(&mut self, id: egui::TextureId, replacing: Self::Texture) {
+    pub fn replace_native_texture(&mut self, id: egui::TextureId, replacing: Rc<SrgbTexture2d>) {
         self.textures.insert(id, replacing);
     }
 }