diff --git a/crates/egui_demo_lib/src/demo/demo_app_windows.rs b/crates/egui_demo_lib/src/demo/demo_app_windows.rs
index 929aec7b1b7..6a6becd599d 100644
--- a/crates/egui_demo_lib/src/demo/demo_app_windows.rs
+++ b/crates/egui_demo_lib/src/demo/demo_app_windows.rs
@@ -383,8 +383,6 @@ mod tests {
     use crate::demo::demo_app_windows::Demos;
     use egui::Vec2;
     use egui_kittest::kittest::Queryable;
-    use egui_kittest::try_image_snapshot;
-    use egui_kittest::wgpu::TestRenderer;
     use egui_kittest::Harness;
 
     #[test]
@@ -409,10 +407,6 @@ mod tests {
                 demo.show(ctx, &mut true);
             });
 
-            // We need to run the app for multiple frames before all windows have the right size
-            harness.run();
-            harness.run();
-
             let window = harness.node().children().next().unwrap();
             // TODO(lucasmerlin): Windows should probably have a label?
             //let window = harness.get_by_name(name);
@@ -420,12 +414,10 @@ mod tests {
             let size = window.raw_bounds().expect("window bounds").size();
             harness.set_size(Vec2::new(size.width as f32, size.height as f32));
 
-            // We need to run the app for some more frames...
-            harness.run();
+            // Run the app for some more frames...
             harness.run();
 
-            let image = TestRenderer::new().render(&harness);
-            let result = try_image_snapshot(&image, &format!("demos/{name}"));
+            let result = harness.try_wgpu_snapshot(&format!("demos/{name}"));
             if let Err(err) = result {
                 errors.push(err);
             }
diff --git a/crates/egui_demo_lib/src/demo/widget_gallery.rs b/crates/egui_demo_lib/src/demo/widget_gallery.rs
index e8851a34c02..60c9bccf0a9 100644
--- a/crates/egui_demo_lib/src/demo/widget_gallery.rs
+++ b/crates/egui_demo_lib/src/demo/widget_gallery.rs
@@ -291,8 +291,6 @@ mod tests {
     use super::*;
     use crate::View;
     use egui::{CentralPanel, Context, Vec2};
-    use egui_kittest::image_snapshot;
-    use egui_kittest::wgpu::TestRenderer;
     use egui_kittest::Harness;
 
     #[test]
@@ -307,16 +305,11 @@ mod tests {
                 demo.ui(ui);
             });
         };
-        let mut harness = Harness::builder()
+        let harness = Harness::builder()
             .with_size(Vec2::new(380.0, 550.0))
             .with_dpi(2.0)
             .build(app);
 
-        // The first and second frames are slightly different, so we take the second frame
-        harness.run();
-
-        let image = TestRenderer::new().render(&harness);
-
-        image_snapshot(&image, "widget_gallery");
+        harness.wgpu_snapshot("widget_gallery");
     }
 }
diff --git "a/crates/egui_demo_lib/tests/snapshots/demos/B\303\251zier Curve.png" "b/crates/egui_demo_lib/tests/snapshots/demos/B\303\251zier Curve.png"
index 34125f1bdad..ad7d9becfaa 100644
--- "a/crates/egui_demo_lib/tests/snapshots/demos/B\303\251zier Curve.png"	
+++ "b/crates/egui_demo_lib/tests/snapshots/demos/B\303\251zier Curve.png"	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 153413
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+size 31461
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Code Editor.png b/crates/egui_demo_lib/tests/snapshots/demos/Code Editor.png
index a472ee0ded8..252c7c8f205 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Code Editor.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Code Editor.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 88807
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+size 32761
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Code Example.png b/crates/egui_demo_lib/tests/snapshots/demos/Code Example.png
index 0c43a9e95ef..093b2c6a33b 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Code Example.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Code Example.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 97977
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+size 78318
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Context Menus.png b/crates/egui_demo_lib/tests/snapshots/demos/Context Menus.png
index 43dafee1cbf..c29267377b7 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Context Menus.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Context Menus.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:00d208432d86f03f9c3be94f4abf3810e8de367bedd13926f04f8e3762ed4f98
-size 25357
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+size 11574
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Dancing Strings.png b/crates/egui_demo_lib/tests/snapshots/demos/Dancing Strings.png
index 048bbdcfe4c..bdc4739c77f 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Dancing Strings.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Dancing Strings.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d6dad3634f4792d04351e2146e17f6aec3736d2ca11a6d3f524acba501114fe0
-size 144784
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+size 20543
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Drag and Drop.png b/crates/egui_demo_lib/tests/snapshots/demos/Drag and Drop.png
index dd0007e498c..035d4c13f7b 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Drag and Drop.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Drag and Drop.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:3ea0cad20d1e27e1a8119b72ae1e518b1f20c3a751502ff1fe98dd2d3187e6cd
-size 57699
+oid sha256:ff78748f2571c49638d8fe8fdc859aaa5181758aad65498b7217551350fb9138
+size 20672
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Extra Viewport.png b/crates/egui_demo_lib/tests/snapshots/demos/Extra Viewport.png
index 69f7165ce92..2d48a7e085f 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Extra Viewport.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Extra Viewport.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 20522
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+size 10610
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Font Book.png b/crates/egui_demo_lib/tests/snapshots/demos/Font Book.png
index d253b2c3d8c..69201f86154 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Font Book.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Font Book.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 153464
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+size 132349
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Frame.png b/crates/egui_demo_lib/tests/snapshots/demos/Frame.png
index f958a9ad942..ff4d08bafe8 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Frame.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Frame.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 52093
+oid sha256:08be378c01e376aab6e99ba3158519bbd7b301e815dc3447b57c9abab558977f
+size 24237
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Highlighting.png b/crates/egui_demo_lib/tests/snapshots/demos/Highlighting.png
index ea24aca8e58..a3cab2a3097 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Highlighting.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Highlighting.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:ca14bb1c6a95fd12d15442af9e9526d1afff224f4d16afee1d9ee0001a389154
-size 31294
+oid sha256:53097b2c26ebcba8b8ad657ed8e52ca40261155e96dbbfca1e8eb01fce25d290
+size 17586
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Interactive Container.png b/crates/egui_demo_lib/tests/snapshots/demos/Interactive Container.png
index 9983bc4a5f8..2bfbf20f91e 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Interactive Container.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Interactive Container.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:227a4b4acfe2f1eced25853268919e4e186277a44d4770be4940fcdbb28089e4
-size 36986
+oid sha256:d9c8395e6b4287b92d85a52ca2d47750f67abeb0ad88c6b42264bfe2e62fd09d
+size 22283
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Misc Demos.png b/crates/egui_demo_lib/tests/snapshots/demos/Misc Demos.png
index 7d90397e41d..80cb5b5a177 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Misc Demos.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Misc Demos.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:6a16afc76a9330b815d90c9b1d90b0f1672c6788d4bad35d5ced024d2e33b439
-size 75910
+oid sha256:38d21b6f8c364f86ad759e88ea1068649c23c58ded5d2953ba8ff1c83b46112f
+size 63884
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Multi Touch.png b/crates/egui_demo_lib/tests/snapshots/demos/Multi Touch.png
index bdb5081196e..23bad456c8c 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Multi Touch.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Multi Touch.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:3f9f1ef4f040bf66123ac1a4ab0c324cf77acfa9d75ac6f30409d50ade48db8e
-size 324417
+oid sha256:83162f8c496a55230375dbc4cc636cfacf63049c913904bea9d06bdb56e63da6
+size 36282
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Painting.png b/crates/egui_demo_lib/tests/snapshots/demos/Painting.png
index 3fba3df87fd..89a17e67406 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Painting.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Painting.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:0765fe7c99045c712ca61ff9041ad52d35a72e2a10906cb53c8ee2e1616345ce
-size 323299
+oid sha256:2537c681d1ffceb5cf4bf19d11295891525c96aea0b1422ab28f133021185be0
+size 17451
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Pan Zoom.png b/crates/egui_demo_lib/tests/snapshots/demos/Pan Zoom.png
index ab70a0ca0a1..7ba225feae8 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Pan Zoom.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Pan Zoom.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:9d0f2cb342d0d362cebd55efa2597379b54ebf30409139bfd1dfe50e9e01e086
-size 39949
+oid sha256:79ce1dbf7627579d4e10de6494e34d8fd9685506d7b35cb3c9148f90f8c01366
+size 25144
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Panels.png b/crates/egui_demo_lib/tests/snapshots/demos/Panels.png
index 4b8649140d3..585c126360c 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Panels.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Panels.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d620ae7b39e45eb2a8dbd983de981a3bb01c17c779794d1d7f7a664e5d01859b
-size 457277
+oid sha256:5068df8549ffc91028addfec6f851f12a4de80e208b50b39e4d44b6aa2c7240e
+size 261946
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Scrolling.png b/crates/egui_demo_lib/tests/snapshots/demos/Scrolling.png
index cd0098fb6aa..440a51f3871 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Scrolling.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Scrolling.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:65f868023382bae61ad9ce34ec0ef5d666e1d1058e72a406f917ebd12bd6e64a
-size 210361
+oid sha256:be2ac005fd5aafa293e21b162c22a09078e46d2d45b6208ce0f7841eeb05314a
+size 183934
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Sliders.png b/crates/egui_demo_lib/tests/snapshots/demos/Sliders.png
index 4bd15045151..e3a213176e9 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Sliders.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Sliders.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:1b48c83f6a0ed1eff52711b294f4a40f1b4b5f9b2738a29b4de37a3f748070c4
-size 138886
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diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Strip.png b/crates/egui_demo_lib/tests/snapshots/demos/Strip.png
index 1bc42553c70..69ec9e88230 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Strip.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Strip.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 123440
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diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Table.png b/crates/egui_demo_lib/tests/snapshots/demos/Table.png
index 71f81cc331c..9f3618ba039 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Table.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Table.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 95610
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+size 70230
diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Text Layout.png b/crates/egui_demo_lib/tests/snapshots/demos/Text Layout.png
index 25d5e6eaac7..ff972ae484c 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Text Layout.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Text Layout.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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diff --git a/crates/egui_demo_lib/tests/snapshots/demos/TextEdit.png b/crates/egui_demo_lib/tests/snapshots/demos/TextEdit.png
index ceeb5082b3d..7af3611b924 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/TextEdit.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/TextEdit.png
@@ -1,3 +1,3 @@
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diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Tooltips.png b/crates/egui_demo_lib/tests/snapshots/demos/Tooltips.png
index bda5aad0673..4e7d8a9230b 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Tooltips.png
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Tooltips.png
@@ -1,3 +1,3 @@
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diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Undo Redo.png b/crates/egui_demo_lib/tests/snapshots/demos/Undo Redo.png
index c441c93d104..a635cdfabd0 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Undo Redo.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Undo Redo.png	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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diff --git a/crates/egui_demo_lib/tests/snapshots/demos/Window Options.png b/crates/egui_demo_lib/tests/snapshots/demos/Window Options.png
index 83ac40c476c..f28774030aa 100644
--- a/crates/egui_demo_lib/tests/snapshots/demos/Window Options.png	
+++ b/crates/egui_demo_lib/tests/snapshots/demos/Window Options.png	
@@ -1,3 +1,3 @@
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diff --git a/crates/egui_demo_lib/tests/snapshots/widget_gallery.png b/crates/egui_demo_lib/tests/snapshots/widget_gallery.png
index 9c46e244fdf..273b85a6303 100644
--- a/crates/egui_demo_lib/tests/snapshots/widget_gallery.png
+++ b/crates/egui_demo_lib/tests/snapshots/widget_gallery.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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diff --git a/crates/egui_kittest/README.md b/crates/egui_kittest/README.md
index 78b46b662f6..86ccf551506 100644
--- a/crates/egui_kittest/README.md
+++ b/crates/egui_kittest/README.md
@@ -30,6 +30,6 @@ fn main() {
 
     // You can even render the ui and do image snapshot tests
     #[cfg(all(feature = "wgpu", feature = "snapshot"))]
-    egui_kittest::image_snapshot(&egui_kittest::wgpu::TestRenderer::new().render(&harness), "readme_example");
+    harness.wgpu_snapshot("readme_example");
 }
 ```
diff --git a/crates/egui_kittest/src/snapshot.rs b/crates/egui_kittest/src/snapshot.rs
index 679927f9983..62b5b6ba8e8 100644
--- a/crates/egui_kittest/src/snapshot.rs
+++ b/crates/egui_kittest/src/snapshot.rs
@@ -1,3 +1,4 @@
+use crate::Harness;
 use image::ImageError;
 use std::fmt::Display;
 use std::io::ErrorKind;
@@ -74,7 +75,8 @@ impl Display for SnapshotError {
 /// Image snapshot test.
 ///
 /// # Errors
-/// Returns a [`SnapshotError`] if the image does not match the snapshot.
+/// Returns a [`SnapshotError`] if the image does not match the snapshot or if there was an error
+/// reading or writing the snapshot.
 pub fn try_image_snapshot(current: &image::RgbaImage, name: &str) -> Result<(), SnapshotError> {
     let snapshots_path = Path::new("tests/snapshots");
 
@@ -163,7 +165,8 @@ fn maybe_update_snapshot(
 /// Image snapshot test.
 ///
 /// # Panics
-/// Panics if the image does not match the snapshot.
+/// Panics if the image does not match the snapshot or if there was an error reading or writing the
+/// snapshot.
 #[track_caller]
 pub fn image_snapshot(current: &image::RgbaImage, name: &str) {
     match try_image_snapshot(current, name) {
@@ -173,3 +176,32 @@ pub fn image_snapshot(current: &image::RgbaImage, name: &str) {
         }
     }
 }
+
+#[cfg(feature = "wgpu")]
+impl Harness<'_> {
+    /// Render a image using a default [`crate::wgpu::TestRenderer`] and compare it to the snapshot.
+    ///
+    /// # Errors
+    /// Returns a [`SnapshotError`] if the image does not match the snapshot or if there was an error
+    /// reading or writing the snapshot.
+    #[track_caller]
+    pub fn try_wgpu_snapshot(&self, name: &str) -> Result<(), SnapshotError> {
+        let image = crate::wgpu::TestRenderer::new().render(self);
+        try_image_snapshot(&image, name)
+    }
+
+    /// Render a image using a default [`crate::wgpu::TestRenderer`] and compare it to the snapshot.
+    ///
+    /// # Panics
+    /// Panics if the image does not match the snapshot or if there was an error reading or writing the
+    /// snapshot.
+    #[track_caller]
+    pub fn wgpu_snapshot(&self, name: &str) {
+        match self.try_wgpu_snapshot(name) {
+            Ok(_) => {}
+            Err(err) => {
+                panic!("{}", err);
+            }
+        }
+    }
+}
diff --git a/crates/egui_kittest/src/wgpu.rs b/crates/egui_kittest/src/wgpu.rs
index b6085aae815..e6a4c419379 100644
--- a/crates/egui_kittest/src/wgpu.rs
+++ b/crates/egui_kittest/src/wgpu.rs
@@ -7,9 +7,9 @@ use std::iter::once;
 use wgpu::Maintain;
 
 pub struct TestRenderer {
-    renderer: egui_wgpu::Renderer,
     device: wgpu::Device,
     queue: wgpu::Queue,
+    dithering: bool,
 }
 
 impl Default for TestRenderer {
@@ -36,20 +36,34 @@ impl TestRenderer {
         ))
         .expect("Failed to create device");
 
-        let renderer = egui_wgpu::Renderer::new(&device, TextureFormat::Rgba8Unorm, None, 1, true);
+        Self::create(device, queue)
+    }
 
+    pub fn create(device: wgpu::Device, queue: wgpu::Queue) -> Self {
         Self {
-            renderer,
             device,
             queue,
+            dithering: false,
         }
     }
 
+    pub fn with_dithering(mut self, dithering: bool) -> Self {
+        self.dithering = dithering;
+        self
+    }
+
     pub fn render(&mut self, harness: &Harness<'_>) -> RgbaImage {
+        let mut renderer = egui_wgpu::Renderer::new(
+            &self.device,
+            TextureFormat::Rgba8Unorm,
+            None,
+            1,
+            self.dithering,
+        );
+
         for delta in &harness.texture_deltas {
             for (id, image_delta) in &delta.set {
-                self.renderer
-                    .update_texture(&self.device, &self.queue, *id, image_delta);
+                renderer.update_texture(&self.device, &self.queue, *id, image_delta);
             }
         }
 
@@ -70,7 +84,7 @@ impl TestRenderer {
             harness.ctx.pixels_per_point(),
         );
 
-        let user_buffers = self.renderer.update_buffers(
+        let user_buffers = renderer.update_buffers(
             &self.device,
             &self.queue,
             &mut encoder,
@@ -113,7 +127,7 @@ impl TestRenderer {
                 })
                 .forget_lifetime();
 
-            self.renderer.render(&mut pass, &tessellated, &screen);
+            renderer.render(&mut pass, &tessellated, &screen);
         }
 
         self.queue