From 718eec4b89d9904845f002fb1be38c7448a7663e Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emilernerfeldt@gmail.com>
Date: Sun, 17 Jan 2021 11:53:55 +0100
Subject: [PATCH] [egui_glium] Fix set_window_size for non-native
 pixels_per_point

---
 egui_glium/CHANGELOG.md   |  1 +
 egui_glium/src/backend.rs | 14 +++++++-------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/egui_glium/CHANGELOG.md b/egui_glium/CHANGELOG.md
index 07121da7..395c1de6 100644
--- a/egui_glium/CHANGELOG.md
+++ b/egui_glium/CHANGELOG.md
@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Fixed 🐛
 
 * Fix a bug where key releases weren't sent to Egui
+* Fix `set_window_size` for non-native `pixels_per_point`.
 
 
 ## 0.7.0 - 2021-01-04
diff --git a/egui_glium/src/backend.rs b/egui_glium/src/backend.rs
index 651ca3ab..f4e27e70 100644
--- a/egui_glium/src/backend.rs
+++ b/egui_glium/src/backend.rs
@@ -237,13 +237,13 @@ pub fn run(mut app: Box<dyn epi::App>) -> ! {
                 }
 
                 if let Some(window_size) = window_size {
-                    display
-                        .gl_window()
-                        .window()
-                        .set_inner_size(glutin::dpi::LogicalSize {
-                            width: window_size.x,
-                            height: window_size.y,
-                        });
+                    display.gl_window().window().set_inner_size(
+                        glutin::dpi::PhysicalSize {
+                            width: (ctx.pixels_per_point() * window_size.x).round(),
+                            height: (ctx.pixels_per_point() * window_size.y).round(),
+                        }
+                        .to_logical::<f32>(native_pixels_per_point(&display) as f64),
+                    );
                 }
 
                 *control_flow = if quit {