Specify deifferent minification and magnification filters (#2224)

* Specify deifferent minification and magnification filters

* Fixes

* Update changelogs

* Doctest fixes

* Add deprecation notice for RetainedImage::with_texture_filter

CHANGELOG.md

@@ -12,6 +12,7 @@ NOTE: [`epaint`](crates/epaint/CHANGELOG.md), [`eframe`](crates/eframe/CHANGELOG
 * Added `Context::os/Context::set_os` to query/set what operating system egui believes it is running on ([#2202](https://github.com/emilk/egui/pull/2202)).
 * Added `Button::shortcut_text` for showing keyboard shortcuts in menu buttons ([#2202](https://github.com/emilk/egui/pull/2202)).
 * Added `egui::KeyboardShortcut` for showing keyboard shortcuts in menu buttons ([#2202](https://github.com/emilk/egui/pull/2202)).
+* Texture loading now takes a `TexureOptions` with minification and magnification filters ([#2224](https://github.com/emilk/egui/pull/2224)).
 
 ### Fixed 🐛
 * ⚠️ BREAKING: Fix text being too small ([#2069](https://github.com/emilk/egui/pull/2069)).

crates/egui-wgpu/src/renderer.rs

@@ -136,7 +136,7 @@ pub struct Renderer {
     /// sampler.
     textures: HashMap<egui::TextureId, (Option<wgpu::Texture>, wgpu::BindGroup)>,
     next_user_texture_id: u64,
-    samplers: HashMap<egui::TextureFilter, wgpu::Sampler>,
+    samplers: HashMap<egui::TextureOptions, wgpu::Sampler>,
 
     /// Storage for use by [`egui::PaintCallback`]'s that need to store resources such as render
     /// pipelines that must have the lifetime of the renderpass.
@@ -530,8 +530,8 @@ impl Renderer {
             });
             let sampler = self
                 .samplers
-                .entry(image_delta.filter)
+                .entry(image_delta.options)
-                .or_insert_with(|| create_sampler(image_delta.filter, device));
+                .or_insert_with(|| create_sampler(image_delta.options, device));
             let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
                 label,
                 layout: &self.texture_bind_group_layout,
@@ -790,15 +790,22 @@ impl Renderer {
     }
 }
 
-fn create_sampler(filter: egui::TextureFilter, device: &wgpu::Device) -> wgpu::Sampler {
+fn create_sampler(options: egui::TextureOptions, device: &wgpu::Device) -> wgpu::Sampler {
-    let wgpu_filter = match filter {
+    let mag_filter = match options.magnification {
+        egui::TextureFilter::Nearest => wgpu::FilterMode::Nearest,
+        egui::TextureFilter::Linear => wgpu::FilterMode::Linear,
+    };
+    let min_filter = match options.minification {
         egui::TextureFilter::Nearest => wgpu::FilterMode::Nearest,
         egui::TextureFilter::Linear => wgpu::FilterMode::Linear,
     };
     device.create_sampler(&wgpu::SamplerDescriptor {
-        label: Some(&format!("egui sampler ({:?})", filter)),
+        label: Some(&format!(
-        mag_filter: wgpu_filter,
+            "egui sampler (mag: {:?}, min {:?})",
-        min_filter: wgpu_filter,
+            mag_filter, min_filter
+        )),
+        mag_filter,
+        min_filter,
         ..Default::default()
     })
 }

crates/egui/src/context.rs

@@ -6,7 +6,7 @@ use crate::{
     input_state::*, layers::GraphicLayers, memory::Options, os::OperatingSystem,
     output::FullOutput, TextureHandle, *,
 };
-use epaint::{mutex::*, stats::*, text::Fonts, textures::TextureFilter, TessellationOptions, *};
+use epaint::{mutex::*, stats::*, text::Fonts, TessellationOptions, *};
 
 // ----------------------------------------------------------------------------
 
@@ -800,7 +800,7 @@ impl Context {
     ///             ui.ctx().load_texture(
     ///                 "my-image",
     ///                 egui::ColorImage::example(),
-    ///                 egui::TextureFilter::Linear
+    ///                 Default::default()
     ///             )
     ///         });
     ///
@@ -815,7 +815,7 @@ impl Context {
         &self,
         name: impl Into<String>,
         image: impl Into<ImageData>,
-        filter: TextureFilter,
+        options: TextureOptions,
     ) -> TextureHandle {
         let name = name.into();
         let image = image.into();
@@ -829,7 +829,7 @@ impl Context {
             max_texture_side
         );
         let tex_mngr = self.tex_manager();
-        let tex_id = tex_mngr.write().alloc(name, image, filter);
+        let tex_id = tex_mngr.write().alloc(name, image, options);
         TextureHandle::new(tex_mngr, tex_id)
     }
 

crates/egui/src/lib.rs

@@ -332,7 +332,7 @@ pub use epaint::hex_color;
 pub use epaint::{
     color, mutex,
     text::{FontData, FontDefinitions, FontFamily, FontId, FontTweak},
-    textures::{TextureFilter, TexturesDelta},
+    textures::{TextureFilter, TextureOptions, TexturesDelta},
     ClippedPrimitive, Color32, ColorImage, FontImage, ImageData, Mesh, PaintCallback,
     PaintCallbackInfo, Rgba, Rounding, Shape, Stroke, TextureHandle, TextureId,
 };

crates/egui/src/ui.rs

@@ -1553,7 +1553,7 @@ impl Ui {
     ///             ui.ctx().load_texture(
     ///                 "my-image",
     ///                 egui::ColorImage::example(),
-    ///                 egui::TextureFilter::Linear
+    ///                 Default::default()
     ///             )
     ///         });
     ///

crates/egui/src/widgets/image.rs

@@ -18,7 +18,7 @@ use emath::Rot2;
 ///             ui.ctx().load_texture(
 ///                 "my-image",
 ///                 egui::ColorImage::example(),
-///                 egui::TextureFilter::Linear
+///                 Default::default()
 ///             )
 ///         });
 ///

crates/egui_demo_lib/src/color_test.rs

@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 
-use egui::{color::*, widgets::color_picker::show_color, TextureFilter, *};
+use egui::{color::*, widgets::color_picker::show_color, TextureOptions, *};
 
 const GRADIENT_SIZE: Vec2 = vec2(256.0, 18.0);
 
@@ -372,7 +372,7 @@ impl TextureManager {
                     size: [width, height],
                     pixels,
                 },
-                TextureFilter::Linear,
+                TextureOptions::LINEAR,
             )
         })
     }

crates/egui_demo_lib/src/demo/plot_demo.rs

@@ -596,11 +596,8 @@ impl ItemsDemo {
         };
 
         let texture: &egui::TextureHandle = self.texture.get_or_insert_with(|| {
-            ui.ctx().load_texture(
+            ui.ctx()
-                "plot_demo",
+                .load_texture("plot_demo", egui::ColorImage::example(), Default::default())
-                egui::ColorImage::example(),
-                egui::TextureFilter::Linear,
-            )
         });
         let image = PlotImage::new(
             texture,

crates/egui_demo_lib/src/demo/widget_gallery.rs

@@ -115,11 +115,8 @@ impl WidgetGallery {
         } = self;
 
         let texture: &egui::TextureHandle = texture.get_or_insert_with(|| {
-            ui.ctx().load_texture(
+            ui.ctx()
-                "example",
+                .load_texture("example", egui::ColorImage::example(), Default::default())
-                egui::ColorImage::example(),
-                egui::TextureFilter::Linear,
-            )
         });
 
         ui.add(doc_link_label("Label", "label,heading"));

crates/egui_extras/src/image.rs

@@ -1,5 +1,4 @@
-use egui::mutex::Mutex;
+use egui::{mutex::Mutex, TextureFilter, TextureOptions};
-use egui::TextureFilter;
 
 /// An image to be shown in egui.
 ///
@@ -13,7 +12,7 @@ pub struct RetainedImage {
     image: Mutex<egui::ColorImage>,
     /// Lazily loaded when we have an egui context.
     texture: Mutex<Option<egui::TextureHandle>>,
-    filter: TextureFilter,
+    options: TextureOptions,
 }
 
 impl RetainedImage {
@@ -23,7 +22,7 @@ impl RetainedImage {
             size: image.size,
             image: Mutex::new(image),
             texture: Default::default(),
-            filter: Default::default(),
+            options: Default::default(),
         }
     }
 
@@ -68,7 +67,7 @@ impl RetainedImage {
         Self::from_svg_bytes(debug_name, svg_str.as_bytes())
     }
 
-    /// Set the texture filter to use for the image.
+    /// Set the texture filters to use for the image.
     ///
     /// **Note:** If the texture has already been uploaded to the GPU, this will require
     /// re-uploading the texture with the updated filter.
@@ -76,7 +75,7 @@ impl RetainedImage {
     /// # Example
     /// ```rust
     /// # use egui_extras::RetainedImage;
-    /// # use egui::{Color32, epaint::{ColorImage, textures::TextureFilter}};
+    /// # use egui::{Color32, epaint::{ColorImage, textures::TextureOptions}};
     /// # let pixels = vec![Color32::BLACK];
     /// # let color_image = ColorImage {
     /// #   size: [1, 1],
@@ -85,10 +84,10 @@ impl RetainedImage {
     /// #
     /// // Upload a pixel art image without it getting blurry when resized
     /// let image = RetainedImage::from_color_image("my_image", color_image)
-    ///     .with_texture_filter(TextureFilter::Nearest);
+    ///     .with_options(TextureOptions::NEAREST);
     /// ```
-    pub fn with_texture_filter(mut self, filter: TextureFilter) -> Self {
+    pub fn with_options(mut self, options: TextureOptions) -> Self {
-        self.filter = filter;
+        self.options = options;
 
         // If the texture has already been uploaded, this will force it to be re-uploaded with the
         // updated filter.
@@ -97,6 +96,14 @@ impl RetainedImage {
         self
     }
 
+    #[deprecated = "Use with_options instead"]
+    pub fn with_texture_filter(self, filter: TextureFilter) -> Self {
+        self.with_options(TextureOptions {
+            magnification: filter,
+            minification: filter,
+        })
+    }
+
     /// The size of the image data (number of pixels wide/high).
     pub fn size(&self) -> [usize; 2] {
         self.size
@@ -130,7 +137,7 @@ impl RetainedImage {
             .get_or_insert_with(|| {
                 let image: &mut ColorImage = &mut self.image.lock();
                 let image = std::mem::take(image);
-                ctx.load_texture(&self.debug_name, image, self.filter)
+                ctx.load_texture(&self.debug_name, image, self.options)
             })
             .id()
     }

crates/egui_glium/examples/native_texture.rs

@@ -18,7 +18,7 @@ fn main() {
     // Allocate egui's texture id for GL texture
     let texture_id = egui_glium
         .painter
-        .register_native_texture(glium_texture, egui::TextureFilter::Linear);
+        .register_native_texture(glium_texture, Default::default());
     // Setup button image size for reasonable image size for button container.
     let button_image_size = egui::vec2(32_f32, 32_f32);
 

crates/egui_glium/src/painter.rs

@@ -1,7 +1,10 @@
 #![allow(deprecated)] // legacy implement_vertex macro
 #![allow(semicolon_in_expressions_from_macros)] // glium::program! macro
 
-use egui::{epaint::Primitive, TextureFilter};
+use egui::{
+    epaint::{textures::TextureFilter, Primitive},
+    TextureOptions,
+};
 
 use {
     egui::{emath::Rect, epaint::Mesh},
@@ -10,7 +13,7 @@ use {
         index::PrimitiveType,
         texture::{self, srgb_texture2d::SrgbTexture2d},
         uniform,
-        uniforms::{MagnifySamplerFilter, SamplerWrapFunction},
+        uniforms::{MagnifySamplerFilter, MinifySamplerFilter, SamplerWrapFunction},
     },
     std::rc::Rc,
 };
@@ -191,14 +194,25 @@ impl Painter {
 
         if let Some(texture) = self.texture(mesh.texture_id) {
             // The texture coordinates for text are so that both nearest and linear should work with the egui font texture.
-            let filter = match texture.filter {
+            let mag_filter = match texture.options.magnification {
                 TextureFilter::Nearest => MagnifySamplerFilter::Nearest,
                 TextureFilter::Linear => MagnifySamplerFilter::Linear,
             };
+            let min_filter = match texture.options.minification {
+                TextureFilter::Nearest => MinifySamplerFilter::Nearest,
+                TextureFilter::Linear => MinifySamplerFilter::Linear,
+            };
+
+            let sampler = texture
+                .glium_texture
+                .sampled()
+                .magnify_filter(mag_filter)
+                .minify_filter(min_filter)
+                .wrap_function(SamplerWrapFunction::Clamp);
 
             let uniforms = uniform! {
                 u_screen_size: [width_in_points, height_in_points],
-                u_sampler: texture.glium_texture.sampled().magnify_filter(filter).wrap_function(SamplerWrapFunction::Clamp),
+                u_sampler: sampler,
             };
 
             // egui outputs colors with premultiplied alpha:
@@ -309,13 +323,13 @@ impl Painter {
                     .main_level()
                     .write(rect, glium_image);
 
-                user_texture.filter = delta.filter;
+                user_texture.options = delta.options;
             }
         } else {
             let gl_texture =
                 SrgbTexture2d::with_format(facade, glium_image, format, mipmaps).unwrap();
 
-            let user_texture = EguiTexture::new(gl_texture.into(), delta.filter);
+            let user_texture = EguiTexture::new(gl_texture.into(), delta.options);
             self.textures.insert(tex_id, user_texture);
         }
     }
@@ -331,12 +345,12 @@ impl Painter {
     pub fn register_native_texture(
         &mut self,
         native: Rc<SrgbTexture2d>,
-        filter: TextureFilter,
+        options: TextureOptions,
     ) -> egui::TextureId {
         let id = egui::TextureId::User(self.next_native_tex_id);
         self.next_native_tex_id += 1;
 
-        let texture = EguiTexture::new(native, filter);
+        let texture = EguiTexture::new(native, options);
         self.textures.insert(id, texture);
         id
     }
@@ -345,23 +359,23 @@ impl Painter {
         &mut self,
         id: egui::TextureId,
         replacing: Rc<SrgbTexture2d>,
-        filter: TextureFilter,
+        options: TextureOptions,
     ) {
-        let texture = EguiTexture::new(replacing, filter);
+        let texture = EguiTexture::new(replacing, options);
         self.textures.insert(id, texture);
     }
 }
 
 struct EguiTexture {
     glium_texture: Rc<SrgbTexture2d>,
-    filter: TextureFilter,
+    options: TextureOptions,
 }
 
 impl EguiTexture {
-    fn new(glium_texture: Rc<SrgbTexture2d>, filter: TextureFilter) -> Self {
+    fn new(glium_texture: Rc<SrgbTexture2d>, options: TextureOptions) -> Self {
         Self {
             glium_texture,
-            filter,
+            options,
         }
     }
 }

crates/egui_glow/src/painter.rs

@@ -20,17 +20,15 @@ pub use glow::Context;
 const VERT_SRC: &str = include_str!("shader/vertex.glsl");
 const FRAG_SRC: &str = include_str!("shader/fragment.glsl");
 
-pub type TextureFilter = egui::TextureFilter;
-
 trait TextureFilterExt {
     fn glow_code(&self) -> u32;
 }
 
-impl TextureFilterExt for TextureFilter {
+impl TextureFilterExt for egui::TextureFilter {
     fn glow_code(&self) -> u32 {
         match self {
-            TextureFilter::Linear => glow::LINEAR,
+            egui::TextureFilter::Linear => glow::LINEAR,
-            TextureFilter::Nearest => glow::NEAREST,
+            egui::TextureFilter::Nearest => glow::NEAREST,
         }
     }
 }
@@ -469,7 +467,7 @@ impl Painter {
 
                 let data: &[u8] = bytemuck::cast_slice(image.pixels.as_ref());
 
-                self.upload_texture_srgb(delta.pos, image.size, delta.filter, data);
+                self.upload_texture_srgb(delta.pos, image.size, delta.options, data);
             }
             egui::ImageData::Font(image) => {
                 assert_eq!(
@@ -483,7 +481,7 @@ impl Painter {
                     .flat_map(|a| a.to_array())
                     .collect();
 
-                self.upload_texture_srgb(delta.pos, image.size, delta.filter, &data);
+                self.upload_texture_srgb(delta.pos, image.size, delta.options, &data);
             }
         };
     }
@@ -492,7 +490,7 @@ impl Painter {
         &mut self,
         pos: Option<[usize; 2]>,
         [w, h]: [usize; 2],
-        texture_filter: TextureFilter,
+        options: egui::TextureOptions,
         data: &[u8],
     ) {
         assert_eq!(data.len(), w * h * 4);
@@ -508,12 +506,12 @@ impl Painter {
             self.gl.tex_parameter_i32(
                 glow::TEXTURE_2D,
                 glow::TEXTURE_MAG_FILTER,
-                texture_filter.glow_code() as i32,
+                options.magnification.glow_code() as i32,
             );
             self.gl.tex_parameter_i32(
                 glow::TEXTURE_2D,
                 glow::TEXTURE_MIN_FILTER,
-                texture_filter.glow_code() as i32,
+                options.minification.glow_code() as i32,
             );
 
             self.gl.tex_parameter_i32(

crates/epaint/CHANGELOG.md

@@ -13,6 +13,7 @@ All notable changes to the epaint crate will be documented in this file.
 * Added `epaint::hex_color!` to create `Color32`'s from hex strings under the `color-hex` feature ([#1596](https://github.com/emilk/egui/pull/1596)).
 * Optimize tessellation of filled circles by 10x or more ([#1616](https://github.com/emilk/egui/pull/1616)).
 * Added opt-in feature `deadlock_detection` to detect double-lock of mutexes on the same thread ([#1619](https://github.com/emilk/egui/pull/1619)).
+* Texture loading now takes a `TexureOptions` with minification and magnification filters ([#2224](https://github.com/emilk/egui/pull/2224)).
 
 
 ## 0.18.1 - 2022-05-01

crates/epaint/src/image.rs

@@ -1,4 +1,4 @@
-use crate::{textures::TextureFilter, Color32};
+use crate::{textures::TextureOptions, Color32};
 
 /// An image stored in RAM.
 ///
@@ -291,7 +291,7 @@ pub struct ImageDelta {
     /// If [`Self::pos`] is `Some`, this describes a patch of the whole image starting at [`Self::pos`].
     pub image: ImageData,
 
-    pub filter: TextureFilter,
+    pub options: TextureOptions,
 
     /// If `None`, set the whole texture to [`Self::image`].
     ///
@@ -301,19 +301,19 @@ pub struct ImageDelta {
 
 impl ImageDelta {
     /// Update the whole texture.
-    pub fn full(image: impl Into<ImageData>, filter: TextureFilter) -> Self {
+    pub fn full(image: impl Into<ImageData>, options: TextureOptions) -> Self {
         Self {
             image: image.into(),
-            filter,
+            options,
             pos: None,
         }
     }
 
     /// Update a sub-region of an existing texture.
-    pub fn partial(pos: [usize; 2], image: impl Into<ImageData>, filter: TextureFilter) -> Self {
+    pub fn partial(pos: [usize; 2], image: impl Into<ImageData>, options: TextureOptions) -> Self {
         Self {
             image: image.into(),
-            filter,
+            options,
             pos: Some(pos),
         }
     }

crates/epaint/src/texture_atlas.rs

@@ -1,6 +1,6 @@
 use emath::{remap_clamp, Rect};
 
-use crate::{textures::TextureFilter, FontImage, ImageDelta};
+use crate::{FontImage, ImageDelta};
 
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 struct Rectu {
@@ -174,16 +174,18 @@ impl TextureAtlas {
 
     /// Call to get the change to the image since last call.
     pub fn take_delta(&mut self) -> Option<ImageDelta> {
+        let texture_options = crate::textures::TextureOptions::LINEAR;
+
         let dirty = std::mem::replace(&mut self.dirty, Rectu::NOTHING);
         if dirty == Rectu::NOTHING {
             None
         } else if dirty == Rectu::EVERYTHING {
-            Some(ImageDelta::full(self.image.clone(), TextureFilter::Linear))
+            Some(ImageDelta::full(self.image.clone(), texture_options))
         } else {
             let pos = [dirty.min_x, dirty.min_y];
             let size = [dirty.max_x - dirty.min_x, dirty.max_y - dirty.min_y];
             let region = self.image.region(pos, size);
-            Some(ImageDelta::partial(pos, region, TextureFilter::Linear))
+            Some(ImageDelta::partial(pos, region, texture_options))
         }
     }
 

crates/epaint/src/texture_handle.rs

@@ -1,7 +1,7 @@
 use std::sync::Arc;
 
 use crate::{
-    emath::NumExt, mutex::RwLock, textures::TextureFilter, ImageData, ImageDelta, TextureId,
+    emath::NumExt, mutex::RwLock, textures::TextureOptions, ImageData, ImageDelta, TextureId,
     TextureManager,
 };
 
@@ -66,10 +66,10 @@ impl TextureHandle {
     }
 
     /// Assign a new image to an existing texture.
-    pub fn set(&mut self, image: impl Into<ImageData>, filter: TextureFilter) {
+    pub fn set(&mut self, image: impl Into<ImageData>, options: TextureOptions) {
         self.tex_mngr
             .write()
-            .set(self.id, ImageDelta::full(image.into(), filter));
+            .set(self.id, ImageDelta::full(image.into(), options));
     }
 
     /// Assign a new image to a subregion of the whole texture.
@@ -77,11 +77,11 @@ impl TextureHandle {
         &mut self,
         pos: [usize; 2],
         image: impl Into<ImageData>,
-        filter: TextureFilter,
+        options: TextureOptions,
     ) {
         self.tex_mngr
             .write()
-            .set(self.id, ImageDelta::partial(pos, image.into(), filter));
+            .set(self.id, ImageDelta::partial(pos, image.into(), options));
     }
 
     /// width x height

crates/epaint/src/textures.rs

@@ -26,7 +26,7 @@ impl TextureManager {
     /// MUST have a white pixel at (0,0) ([`crate::WHITE_UV`]).
     ///
     /// The texture is given a retain-count of `1`, requiring one call to [`Self::free`] to free it.
-    pub fn alloc(&mut self, name: String, image: ImageData, filter: TextureFilter) -> TextureId {
+    pub fn alloc(&mut self, name: String, image: ImageData, options: TextureOptions) -> TextureId {
         let id = TextureId::Managed(self.next_id);
         self.next_id += 1;
 
@@ -35,10 +35,10 @@ impl TextureManager {
             size: image.size(),
             bytes_per_pixel: image.bytes_per_pixel(),
             retain_count: 1,
-            filter,
+            options,
         });
 
-        self.delta.set.push((id, ImageDelta::full(image, filter)));
+        self.delta.set.push((id, ImageDelta::full(image, options)));
         id
     }
 
@@ -131,8 +131,50 @@ pub struct TextureMeta {
     /// Free when this reaches zero.
     pub retain_count: usize,
 
-    /// The texture filtering mode to use when rendering
+    /// The texture filtering mode to use when rendering.
-    pub filter: TextureFilter,
+    pub options: TextureOptions,
+}
+
+impl TextureMeta {
+    /// Size in bytes.
+    /// width x height x [`Self::bytes_per_pixel`].
+    pub fn bytes_used(&self) -> usize {
+        self.size[0] * self.size[1] * self.bytes_per_pixel
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+/// How the texture texels are filtered.
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
+#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
+pub struct TextureOptions {
+    /// How to filter when magnifying (when texels are larger than pixels).
+    pub magnification: TextureFilter,
+
+    /// How to filter when minifying (when texels are smaller than pixels).
+    pub minification: TextureFilter,
+}
+
+impl TextureOptions {
+    /// Linear magnification and minification.
+    pub const LINEAR: Self = Self {
+        magnification: TextureFilter::Linear,
+        minification: TextureFilter::Linear,
+    };
+
+    /// Nearest magnification and minification.
+    pub const NEAREST: Self = Self {
+        magnification: TextureFilter::Nearest,
+        minification: TextureFilter::Nearest,
+    };
+}
+
+impl Default for TextureOptions {
+    /// The default is linear for both magnification and minification.
+    fn default() -> Self {
+        Self::LINEAR
+    }
 }
 
 /// How the texture texels are filtered.
@@ -146,25 +188,9 @@ pub enum TextureFilter {
     Nearest,
 
     /// Linearly interpolate the nearest neighbors, creating a smoother look when zooming in and out.
-    ///
-    /// This is the default.
     Linear,
 }
 
-impl Default for TextureFilter {
-    fn default() -> Self {
-        Self::Linear
-    }
-}
-
-impl TextureMeta {
-    /// Size in bytes.
-    /// width x height x [`Self::bytes_per_pixel`].
-    pub fn bytes_used(&self) -> usize {
-        self.size[0] * self.size[1] * self.bytes_per_pixel
-    }
-}
-
 // ----------------------------------------------------------------------------
 
 /// What has been allocated and freed during the last period.

examples/screenshot/src/main.rs

@@ -30,7 +30,7 @@ impl eframe::App for MyApp {
                 self.texture = Some(ui.ctx().load_texture(
                     "screenshot",
                     screenshot,
-                    egui::TextureFilter::Linear,
+                    Default::default(),
                 ));
             }