Add support for texture filters in WGPU backend

egui-wgpu/src/renderer.rs

@@ -416,10 +416,14 @@ impl RenderPass {
                 format: wgpu::TextureFormat::Rgba8UnormSrgb,
                 usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
             });
+            let filter = match image_delta.filter {
+                egui::TextureFilter::Nearest => wgpu::FilterMode::Nearest,
+                egui::TextureFilter::Linear => wgpu::FilterMode::Linear,
+            };
             let sampler = device.create_sampler(&wgpu::SamplerDescriptor {
                 label: None,
-                mag_filter: wgpu::FilterMode::Linear,
+                mag_filter: filter,
-                min_filter: wgpu::FilterMode::Linear,
+                min_filter: filter,
                 ..Default::default()
             });
             let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
@@ -488,11 +492,12 @@ impl RenderPass {
     /// The `Texture` must have the format `TextureFormat::Rgba8UnormSrgb` and usage
     /// `TextureUsage::SAMPLED`. Any compare function supplied in the `SamplerDescriptor` will be
     /// ignored.
+    #[allow(clippy::needless_pass_by_value)] // false positive
     pub fn register_native_texture_with_sampler_options(
         &mut self,
         device: &wgpu::Device,
         texture: &wgpu::TextureView,
-        sampler_descriptor: wgpu::SamplerDescriptor,
+        sampler_descriptor: wgpu::SamplerDescriptor<'_>,
     ) -> egui::TextureId {
         let sampler = device.create_sampler(&wgpu::SamplerDescriptor {
             compare: None,

egui/src/context.rs

@@ -697,7 +697,7 @@ impl Context {
     ///             ui.ctx().load_texture(
     ///                 "my-image",
     ///                 egui::ColorImage::example(),
-    ///                 egui::epaint::textures::TextureFilter::Linear
+    ///                 egui::TextureFilter::Linear
     ///             )
     ///         });
     ///

egui/src/lib.rs

@@ -327,7 +327,7 @@ pub use epaint::hex_color;
 pub use epaint::{
     color, mutex,
     text::{FontData, FontDefinitions, FontFamily, FontId, FontTweak},
-    textures::TexturesDelta,
+    textures::{TextureFilter, TexturesDelta},
     ClippedPrimitive, Color32, ColorImage, FontImage, ImageData, Mesh, PaintCallback,
     PaintCallbackInfo, Rgba, Rounding, Shape, Stroke, TextureHandle, TextureId,
 };

egui/src/ui.rs

@@ -1529,7 +1529,7 @@ impl Ui {
     ///             ui.ctx().load_texture(
     ///                 "my-image",
     ///                 egui::ColorImage::example(),
-    ///                 egui::epaint::textures::TextureFilter::Linear
+    ///                 egui::TextureFilter::Linear
     ///             )
     ///         });
     ///

egui/src/widgets/image.rs

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

egui_demo_lib/src/color_test.rs

@@ -1,4 +1,4 @@
-use egui::{color::*, epaint::textures::TextureFilter, widgets::color_picker::show_color, *};
+use egui::{color::*, widgets::color_picker::show_color, TextureFilter, *};
 use std::collections::HashMap;
 
 const GRADIENT_SIZE: Vec2 = vec2(256.0, 24.0);

egui_demo_lib/src/demo/plot_demo.rs

@@ -552,7 +552,7 @@ impl ItemsDemo {
             ui.ctx().load_texture(
                 "plot_demo",
                 egui::ColorImage::example(),
-                egui::epaint::textures::TextureFilter::Linear,
+                egui::TextureFilter::Linear,
             )
         });
         let image = PlotImage::new(

egui_demo_lib/src/demo/widget_gallery.rs

@@ -118,7 +118,7 @@ impl WidgetGallery {
             ui.ctx().load_texture(
                 "example",
                 egui::ColorImage::example(),
-                egui::epaint::textures::TextureFilter::Linear,
+                egui::TextureFilter::Linear,
             )
         });
 

egui_extras/src/image.rs

@@ -1,5 +1,5 @@
-use egui::epaint::textures::TextureFilter;
 use egui::mutex::Mutex;
+use egui::TextureFilter;
 
 /// An image to be shown in egui.
 ///

egui_glow/src/painter.rs

@@ -20,7 +20,7 @@ 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::epaint::textures::TextureFilter;
+pub type TextureFilter = egui::TextureFilter;
 
 trait TextureFilterExt {
     fn glow_code(&self) -> u32;