WGPU update, improved window creation

.github/workflows/test.yml

@@ -71,7 +71,7 @@ jobs:
         toolchain: [stable]
         include:
           - os: ubuntu-latest
-            toolchain: "1.66.0"
+            toolchain: "1.67.0"
           - os: ubuntu-latest
             toolchain: beta
 

crates/kas-core/Cargo.toml

@@ -96,7 +96,7 @@ ron = { version = "0.8.0", package = "ron", optional = true }
 toml = { version = "0.8.2", package = "toml", optional = true }
 num_enum = "0.7.0"
 dark-light = { version = "1.0", optional = true }
-raw-window-handle = "0.5.0"
+raw-window-handle = "0.6.0"
 async-global-executor = { version = "2.3.1", optional = true }
 cfg-if = "1.0.0"
 smol_str = "0.2.0"
@@ -123,4 +123,4 @@ version = "0.5.0" # used in doc links
 version = "0.29.2"
 optional = true
 default-features = false
-features = ["rwh_05"]
+features = ["rwh_06"]

crates/kas-core/src/draw/draw_shared.rs

@@ -149,6 +149,9 @@ impl<DS: DrawSharedImpl> DrawShared for SharedState<DS> {
 pub trait DrawSharedImpl: Any {
     type Draw: DrawImpl;
 
+    /// Get the maximum 2D texture size
+    fn max_texture_dimension_2d(&self) -> u32;
+
     /// Set font raster config
     fn set_raster_config(&mut self, config: &RasterConfig);
 

crates/kas-core/src/shell/common.rs

@@ -10,6 +10,7 @@ use crate::draw::{color::Rgba, DrawIface, WindowCommon};
 use crate::geom::Size;
 use crate::theme::Theme;
 use raw_window_handle as raw;
+use std::time::Instant;
 use thiserror::Error;
 
 /// Possible failures from constructing a [`Shell`](super::Shell)
@@ -194,12 +195,11 @@ pub trait WindowSurface {
     type Shared: kas::draw::DrawSharedImpl;
 
     /// Construct an instance from a window handle
-    fn new<W: raw::HasRawWindowHandle + raw::HasRawDisplayHandle>(
-        shared: &mut Self::Shared,
-        size: Size,
-        window: W,
-    ) -> Result<Self>
+    ///
+    /// It is required to call [`WindowSurface::do_resize`] after this.
+    fn new<W>(shared: &mut Self::Shared, window: W) -> Result<Self>
     where
+        W: raw::HasWindowHandle + raw::HasDisplayHandle,
         Self: Sized;
 
     /// Get current surface size
@@ -220,5 +220,7 @@ pub trait WindowSurface {
     fn common_mut(&mut self) -> &mut WindowCommon;
 
     /// Present frame
-    fn present(&mut self, shared: &mut Self::Shared, clear_color: Rgba);
+    ///
+    /// Return time at which render finishes
+    fn present(&mut self, shared: &mut Self::Shared, clear_color: Rgba) -> Instant;
 }

crates/kas-core/src/shell/mod.rs

@@ -53,6 +53,7 @@ enum ProxyAction {
 #[cfg(test)]
 mod test {
     use super::*;
+    use std::time::Instant;
 
     struct Draw;
     impl crate::draw::DrawImpl for Draw {
@@ -152,6 +153,10 @@ mod test {
     impl crate::draw::DrawSharedImpl for DrawShared {
         type Draw = Draw;
 
+        fn max_texture_dimension_2d(&self) -> u32 {
+            todo!()
+        }
+
         fn set_raster_config(&mut self, _: &crate::theme::RasterConfig) {
             todo!()
         }
@@ -224,12 +229,9 @@ mod test {
     impl WindowSurface for Surface {
         type Shared = DrawShared;
 
-        fn new<W: raw_window_handle::HasRawWindowHandle + raw_window_handle::HasRawDisplayHandle>(
-            _: &mut Self::Shared,
-            _: crate::prelude::Size,
-            _: W,
-        ) -> Result<Self>
+        fn new<W>(_: &mut Self::Shared, _: W) -> Result<Self>
         where
+            W: raw_window_handle::HasRawWindowHandle + raw_window_handle::HasRawDisplayHandle,
             Self: Sized,
         {
             todo!()
@@ -254,7 +256,7 @@ mod test {
             todo!()
         }
 
-        fn present(&mut self, _: &mut Self::Shared, _: crate::draw::color::Rgba) {
+        fn present(&mut self, _: &mut Self::Shared, _: crate::draw::color::Rgba) -> Instant {
             todo!()
         }
     }

crates/kas-core/src/shell/shared.rs

@@ -39,7 +39,6 @@ pub(crate) struct SharedState<Data: AppData, S: WindowSurface, T: Theme<S::Share
     pub(super) shell: ShellShared<Data, S, T>,
     pub(super) data: Data,
     /// Estimated scale factor (from last window constructed or available screens)
-    pub(super) scale_factor: f64,
     options: Options,
 }
 
@@ -82,7 +81,6 @@ where
                 window_id: 0,
             },
             data,
-            scale_factor: pw.guess_scale_factor(),
             options,
         })
     }

crates/kas-core/src/shell/shell.rs

@@ -262,17 +262,6 @@ impl<'a> PlatformWrapper<'a> {
         // Otherwise platform is unsupported!
     }
 
-    /// Guess scale factor of first window
-    pub(super) fn guess_scale_factor(&self) -> f64 {
-        if let Some(mon) = self.0.primary_monitor() {
-            return mon.scale_factor();
-        }
-        if let Some(mon) = self.0.available_monitors().next() {
-            return mon.scale_factor();
-        }
-        1.0
-    }
-
     /// Create a waker
     ///
     /// This waker may be used by a [`Future`](std::future::Future) to revive

crates/kas-core/src/shell/window.rs

@@ -8,8 +8,8 @@
 use super::common::WindowSurface;
 use super::shared::{SharedState, ShellShared};
 use super::ProxyAction;
-use kas::cast::Cast;
-use kas::draw::{color::Rgba, AnimationState};
+use kas::cast::{Cast, Conv};
+use kas::draw::{color::Rgba, AnimationState, DrawSharedImpl};
 use kas::event::{config::WindowConfig, ConfigCx, CursorIcon, EventState};
 use kas::geom::{Coord, Rect, Size};
 use kas::layout::SolveCache;
@@ -76,19 +76,11 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
     ) -> super::Result<winit::window::WindowId> {
         let time = Instant::now();
 
-        // Wayland only supports windows constructed via logical size
-        let use_logical_size = shared.shell.platform.is_wayland();
-
-        let scale_factor = if use_logical_size {
-            1.0
-        } else {
-            shared.scale_factor as f32
-        };
-
-        let mut theme_window = shared.shell.theme.new_window(scale_factor);
+        // We cannot reliably determine the scale factor before window creation.
+        // A factor of 1.0 lets us estimate the size requirements (logical).
+        let mut theme_window = shared.shell.theme.new_window(1.0);
         let dpem = theme_window.size().dpem();
-
-        self.ev_state.update_config(scale_factor, dpem);
+        self.ev_state.update_config(1.0, dpem);
         self.ev_state.full_configure(
             theme_window.size(),
             self.window_id,
@@ -101,20 +93,18 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
         let mut solve_cache = SolveCache::find_constraints(node, sizer);
 
         // Opening a zero-size window causes a crash, so force at least 1x1:
-        let ideal = solve_cache.ideal(true).max(Size(1, 1));
-        let ideal = match use_logical_size {
-            false => ideal.as_physical(),
-            true => ideal.as_logical(),
-        };
+        let min_size = Size(1, 1);
+        let max_size = Size::splat(shared.shell.draw.draw.max_texture_dimension_2d().cast());
+
+        let ideal = solve_cache
+            .ideal(true)
+            .clamp(min_size, max_size)
+            .as_logical();
 
         let mut builder = WindowBuilder::new().with_inner_size(ideal);
         let (restrict_min, restrict_max) = self.widget.restrictions();
         if restrict_min {
-            let min = solve_cache.min(true);
-            let min = match use_logical_size {
-                false => min.as_physical(),
-                true => min.as_logical(),
-            };
+            let min = solve_cache.min(true).as_logical();
             builder = builder.with_min_inner_size(min);
         }
         if restrict_max {
@@ -125,40 +115,63 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
             .with_window_icon(self.widget.icon())
             .with_decorations(self.widget.decorations() == kas::Decorations::Server)
             .with_transparent(self.widget.transparent())
+            .with_visible(false)
             .build(elwt)?;
 
+        // Now that we have a scale factor, we may need to resize:
         let scale_factor = window.scale_factor();
-        shared.scale_factor = scale_factor;
+        let apply_size;
+        if scale_factor != 1.0 {
+            let sf32 = scale_factor as f32;
+            shared.shell.theme.update_window(&mut theme_window, sf32);
+            let dpem = theme_window.size().dpem();
+            self.ev_state.update_config(sf32, dpem);
+            let node = self.widget.as_node(&shared.data);
+            let sizer = SizeCx::new(theme_window.size());
+            solve_cache = SolveCache::find_constraints(node, sizer);
+
+            // NOTE: we would use .as_physical(), but we need to ensure rounding
+            // doesn't result in anything exceeding max_size which can happen
+            // otherwise (default rounding mode is to nearest, away from zero).
+            let ideal = solve_cache.ideal(true).max(min_size);
+            let ub = (f64::conv(max_size.0) / scale_factor).floor();
+            let w = ub.min(f64::conv(ideal.0) / scale_factor);
+            let h = ub.min(f64::conv(ideal.1) / scale_factor);
+            let ideal = winit::dpi::LogicalSize::new(w, h);
+
+            if let Some(size) = window.request_inner_size(ideal) {
+                debug_assert_eq!(size, window.inner_size());
+                apply_size = true;
+            } else {
+                // We will receive WindowEvent::Resized
+                apply_size = false;
+            }
+        } else {
+            apply_size = true;
+        }
+
         let size: Size = window.inner_size().cast();
         log::info!(
             "new: constructed with physical size {:?}, scale factor {}",
             size,
             scale_factor
         );
 
-        // Now that we have a scale factor, we may need to resize:
-        if use_logical_size && scale_factor != 1.0 {
-            let scale_factor = scale_factor as f32;
-            shared
-                .shell
-                .theme
-                .update_window(&mut theme_window, scale_factor);
-            let dpem = theme_window.size().dpem();
-            self.ev_state.update_config(scale_factor, dpem);
-            solve_cache.invalidate_rule_cache();
-        }
-
         #[cfg(all(wayland_platform, feature = "clipboard"))]
-        use raw_window_handle::{HasRawDisplayHandle, RawDisplayHandle, WaylandDisplayHandle};
+        use raw_window_handle::{HasDisplayHandle, RawDisplayHandle, WaylandDisplayHandle};
+        // TODO: this shouldn't unwrap
         #[cfg(all(wayland_platform, feature = "clipboard"))]
-        let wayland_clipboard = match window.raw_display_handle() {
+        let wayland_clipboard = match window.display_handle().unwrap().as_raw() {
             RawDisplayHandle::Wayland(WaylandDisplayHandle { display, .. }) => {
-                Some(unsafe { smithay_clipboard::Clipboard::new(display) })
+                Some(unsafe { smithay_clipboard::Clipboard::new(display.as_ptr()) })
             }
             _ => None,
         };
 
-        let surface = S::new(&mut shared.shell.draw.draw, size, &window)?;
+        let mut surface = S::new(&mut shared.shell.draw.draw, &window)?;
+        if apply_size {
+            surface.do_resize(&mut shared.shell.draw.draw, size);
+        }
 
         let winit_id = window.id();
 
@@ -176,7 +189,9 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
             queued_frame_time: Some(time),
         });
 
-        self.apply_size(shared, true);
+        if apply_size {
+            self.apply_size(shared, true);
+        }
 
         log::trace!(target: "kas_perf::wgpu::window", "resume: {}µs", time.elapsed().as_micros());
         Ok(winit_id)
@@ -202,7 +217,6 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
         match event {
             WindowEvent::Moved(_) | WindowEvent::Destroyed => false,
             WindowEvent::Resized(size) => {
-                // TODO: maybe enqueue to allow skipping of obsolete resizes
                 if window
                     .surface
                     .do_resize(&mut shared.shell.draw.draw, size.cast())
@@ -213,14 +227,16 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
             }
             WindowEvent::ScaleFactorChanged { scale_factor, .. } => {
                 // Note: API allows us to set new window size here.
-                shared.scale_factor = scale_factor;
                 let scale_factor = scale_factor as f32;
                 shared
                     .shell
                     .theme
                     .update_window(&mut window.theme_window, scale_factor);
                 let dpem = window.theme_window.size().dpem();
                 self.ev_state.update_config(scale_factor, dpem);
+
+                // NOTE: we could try resizing here in case the window is too
+                // small due to non-linear scaling, but it appears unnecessary.
                 window.solve_cache.invalidate_rule_cache();
                 false
             }
@@ -418,6 +434,7 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
         }
         self.widget.resize_popups(&mut cx, &shared.data);
 
+        // Size restrictions may have changed due to content or size (line wrapping)
         let (restrict_min, restrict_max) = self.widget.restrictions();
         if restrict_min {
             let min = window.solve_cache.min(true).as_physical();
@@ -428,6 +445,7 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
             window.set_max_inner_size(Some(ideal));
         };
 
+        window.set_visible(true);
         window.request_redraw();
         log::trace!(
             target: "kas_perf::wgpu::window",
@@ -477,18 +495,19 @@ impl<A: AppData, S: WindowSurface, T: Theme<S::Shared>> Window<A, S, T> {
         } else {
             shared.shell.theme.clear_color()
         };
-        window
+        let time3 = window
             .surface
             .present(&mut shared.shell.draw.draw, clear_color);
 
         let text_dur_micros = take(&mut window.surface.common_mut().dur_text);
         let end = Instant::now();
         log::trace!(
             target: "kas_perf::wgpu::window",
-            "do_draw: {}µs ({}μs widgets, {}µs text, {}µs render)",
+            "do_draw: {}μs ({}μs widgets, {}μs text, {}μs render, {}μs present)",
             (end - start).as_micros(),
             (time2 - start).as_micros(),
             text_dur_micros.as_micros(),
+            (time3 - time2).as_micros(),
             (end - time2).as_micros()
         );
 

crates/kas-resvg/src/svg.rs

@@ -285,6 +285,13 @@ impl_scope! {
                     State::Rendering(source) |
                     State::Ready(source, _) => State::Ready(source, pixmap),
                 };
+
+                let own_size: (u32, u32) = self.core.rect.size.cast();
+                if size != own_size {
+                    if let Some(fut) = self.inner.resize(size) {
+                        cx.push_spawn(self.id(), fut);
+                    }
+                }
             }
         }
     }

crates/kas-wgpu/Cargo.toml

@@ -29,7 +29,6 @@ raster = ["kas-text/raster"]
 bytemuck = "1.7.0"
 futures-lite = "1.12"
 log = "0.4"
-wgpu = { version = "0.17.0", features = ["spirv"] }
 thiserror = "1.0.23"
 guillotiere = "0.6.0"
 rustc-hash = "1.0"
@@ -43,5 +42,11 @@ path = "../kas-core"
 [dependencies.kas-text]
 version = "0.6.0"
 
+[dependencies.wgpu]
+version = "0.18.0"
+features = ["spirv"]
+git = "https://github.com/gfx-rs/wgpu.git"
+rev = "1dc5347b141f98392fa012ae3416901faf4249a5"
+
 [build-dependencies]
 glob = "0.3"