prepare for 0.4.1 release

(probably some misuse on my side, need to investigate more)

.github/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
     - name: Build
       run: cargo build --release --verbose
     - name: Upload artifact
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: uw8-${{ matrix.build }}
         path: target/release/${{ matrix.exe }}

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "uw8"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -28,4 +28,4 @@ tokio-stream = { version = "0.1.15", features = ["sync"], optional = true }
 webbrowser = { version = "0.8.13", optional = true }
 ansi_term = "0.12.1"
 cpal = { version = "0.15.3", optional = true }
-rubato = { version = "0.15.0", optional = true }
+rubato = { version = "0.12.0", optional = true }

README.md

@@ -15,9 +15,9 @@ See [here](https://exoticorn.github.io/microw8/) for more information and docs.
 
 ## Downloads
 
-* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.4.0/microw8-0.4.0-linux.tgz)
-* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.4.0/microw8-0.4.0-macos.tgz)
-* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.4.0/microw8-0.4.0-windows.zip)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-windows.zip)
 
 The download includes
 

site/content/_index.md

@@ -31,19 +31,19 @@ Examplers for older versions:
 
 ## Versions
 
-### v0.4.0
+### v0.4.1
 
-* [Web runtime](../v0.4.0)
-* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.4.0/microw8-0.4.0-linux.tgz)
-* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.4.0/microw8-0.4.0-macos.tgz)
-* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.4.0/microw8-0.4.0-windows.zip)
+* [Web runtime](../v0.4.1)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-windows.zip)
 
 Changes:
 
-* add support for sound on mono- and surround-only devices
-* update wasmtime dependency to fix performance regression in 0.3.0
-* add frame counter since module start at location 72
-* add 6 and 7 parameter function types to base module
+* Windows: fix bad/inconsistent frame rate
+* fix choppy sound on devices with sample rates != 44100 kHz
+* add scale mode 'fill' option
+
 
 ### Older versions
 

site/content/docs.md

@@ -468,6 +468,7 @@ when using the native runtime:
 * `--no-gpu`:  Force old cpu-only window code
 * `--filter FILTER`:  Select an upscale filter at startup
 * `--fullscreen`:  Start in fullscreen mode
+* `--scale-fill`:  Scale to fill whole screen, potentially cropping parts of the frame buffer.
 
 Note that the cpu-only window does not support fullscreen nor upscale filters.
 
@@ -484,7 +485,7 @@ The upscale filter options are:
 5, auto_crt (default)   : ss_crt below 960x720, chromatic_crt otherwise
 ```
 
-You can switch the upscale filter at any time using the keys 1-5. You can toggle fullscreen with F.
+You can switch the upscale filter at any time using the keys 1-5. You can toggle fullscreen with F. You can toggle between scale modes 'fit' and 'fill' with M.
 
 ## `uw8 pack`
 

site/content/versions.md

@@ -2,6 +2,19 @@
 description = "Versions"
 +++
 
+### v0.4.1
+
+* [Web runtime](../v0.4.1)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.4.1/microw8-0.4.1-windows.zip)
+
+Changes:
+
+* Windows: fix bad/inconsistent frame rate
+* fix choppy sound on devices with sample rates != 44100 kHz
+* add scale mode 'fill' option
+
 ### v0.4.0
 
 * [Web runtime](../v0.4.0)

site/templates/index.html

@@ -4,7 +4,7 @@
         <section>
             <h1 class="text-center heading-text">A WebAssembly based fantasy console</h1>
         </section>
-        <a href="v0.4.0">
+        <a href="v0.4.1">
             <img class="demonstration-gif" style="width:640px;height:480px;image-rendering:pixelated" src="img/technotunnel.png"></img>
         </a>
     </div>

src/run_native.rs

@@ -395,8 +395,8 @@ fn init_sound(
         None
     } else {
         let rs = rubato::FftFixedIn::new(44100, sample_rate, 128, 1, 2)?;
-        let input_buffers = rs.input_buffer_allocate(true);
-        let output_buffers = rs.output_buffer_allocate(true);
+        let input_buffers = rs.input_buffer_allocate();
+        let output_buffers = rs.output_buffer_allocate();
         Some(Resampler {
             resampler: rs,
             input_buffers,

uw8-window/Cargo.toml

@@ -6,11 +6,11 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-winit = "0.29.15"
 env_logger = "0.11.3"
+winit = "0.28.6"
 log = "0.4"
 pico-args = "0.5"
-wgpu = "0.19.3"
+wgpu = "0.17"
 pollster = "0.3.0"
 bytemuck = { version = "1.15", features = [ "derive" ] }
 anyhow = "1"

uw8-window/src/gpu/crt.rs

@@ -1,7 +1,7 @@
 use wgpu::util::DeviceExt;
 use winit::dpi::PhysicalSize;
 
-use super::Filter;
+use super::{scale_mode::ScaleMode, Filter};
 
 pub struct CrtFilter {
     uniform_buffer: wgpu::Buffer,
@@ -15,9 +15,10 @@ impl CrtFilter {
         screen: &wgpu::TextureView,
         resolution: PhysicalSize<u32>,
         surface_format: wgpu::TextureFormat,
+        scale_mode: ScaleMode,
     ) -> CrtFilter {
         let uniforms = Uniforms {
-            texture_scale: texture_scale_from_resolution(resolution),
+            texture_scale: scale_mode.texture_scale_from_resolution(resolution),
         };
 
         let uniform_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
@@ -112,9 +113,9 @@ impl CrtFilter {
 }
 
 impl Filter for CrtFilter {
-    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>, scale_mode: ScaleMode) {
         let uniforms = Uniforms {
-            texture_scale: texture_scale_from_resolution(new_size),
+            texture_scale: scale_mode.texture_scale_from_resolution(new_size),
         };
         queue.write_buffer(&self.uniform_buffer, 0, bytemuck::cast_slice(&[uniforms]));
     }
@@ -126,16 +127,6 @@ impl Filter for CrtFilter {
     }
 }
 
-fn texture_scale_from_resolution(res: PhysicalSize<u32>) -> [f32; 4] {
-    let scale = ((res.width as f32) / 160.0).min((res.height as f32) / 120.0);
-    [
-        res.width as f32 / scale,
-        res.height as f32 / scale,
-        2.0 / scale,
-        0.0,
-    ]
-}
-
 #[repr(C)]
 #[derive(Debug, Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
 struct Uniforms {

uw8-window/src/gpu/crt.wgsl

@@ -17,7 +17,7 @@ fn vs_main(
     let i = in_vertex_index / 3u + in_vertex_index % 3u;
     let x = -1.0 + f32(i % 2u) * 322.0;
     let y = -1.0 + f32(i / 2u) * 242.0;
-    out.clip_position = vec4<f32>((vec2<f32>(x, y) - vec2<f32>(160.0, 120.0)) / uniforms.texture_scale.xy, 0.0, 1.0);
+    out.clip_position = vec4<f32>((vec2<f32>(x, y) - vec2<f32>(160.0, 120.0)) * uniforms.texture_scale.xy, 0.0, 1.0);
     out.tex_coords = vec2<f32>(x, y);
     return out;
 }

uw8-window/src/gpu/fast_crt.rs

@@ -1,7 +1,7 @@
 use wgpu::util::DeviceExt;
 use winit::dpi::PhysicalSize;
 
-use super::Filter;
+use super::{scale_mode::ScaleMode, Filter};
 
 pub struct FastCrtFilter {
     uniform_buffer: wgpu::Buffer,
@@ -16,9 +16,10 @@ impl FastCrtFilter {
         resolution: PhysicalSize<u32>,
         surface_format: wgpu::TextureFormat,
         chromatic: bool,
+        scale_mode: ScaleMode,
     ) -> FastCrtFilter {
         let uniforms = Uniforms {
-            texture_scale: texture_scale_from_resolution(resolution),
+            texture_scale: scale_mode.texture_scale_from_resolution(resolution),
         };
 
         let uniform_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
@@ -131,9 +132,9 @@ impl FastCrtFilter {
 }
 
 impl Filter for FastCrtFilter {
-    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>, scale_mode: ScaleMode) {
         let uniforms = Uniforms {
-            texture_scale: texture_scale_from_resolution(new_size),
+            texture_scale: scale_mode.texture_scale_from_resolution(new_size),
         };
         queue.write_buffer(&self.uniform_buffer, 0, bytemuck::cast_slice(&[uniforms]));
     }
@@ -145,16 +146,6 @@ impl Filter for FastCrtFilter {
     }
 }
 
-fn texture_scale_from_resolution(res: PhysicalSize<u32>) -> [f32; 4] {
-    let scale = ((res.width as f32) / 160.0).min((res.height as f32) / 120.0);
-    [
-        scale / res.width as f32,
-        scale / res.height as f32,
-        2.0 / scale,
-        0.0,
-    ]
-}
-
 #[repr(C)]
 #[derive(Debug, Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
 struct Uniforms {

uw8-window/src/gpu/mod.rs

@@ -1,18 +1,20 @@
 use crate::{Input, WindowConfig, WindowImpl};
 use anyhow::{anyhow, Result};
-use std::{sync::Arc, time::Instant};
+use scale_mode::ScaleMode;
+use std::time::Instant;
 
 use winit::{
     dpi::PhysicalSize,
-    event::{Event, WindowEvent},
+    event::{Event, VirtualKeyCode, WindowEvent},
     event_loop::{ControlFlow, EventLoop},
-    keyboard::{Key, KeyCode, NamedKey, PhysicalKey},
-    platform::pump_events::{EventLoopExtPumpEvents, PumpStatus},
     window::{Fullscreen, WindowBuilder},
 };
 
+use winit::platform::run_return::EventLoopExtRunReturn;
+
 mod crt;
 mod fast_crt;
+pub mod scale_mode;
 mod square;
 
 use crt::CrtFilter;
@@ -21,7 +23,7 @@ use square::SquareFilter;
 
 pub struct Window {
     _instance: wgpu::Instance,
-    surface: wgpu::Surface<'static>,
+    surface: wgpu::Surface,
     _adapter: wgpu::Adapter,
     device: wgpu::Device,
     queue: wgpu::Queue,
@@ -29,17 +31,18 @@ pub struct Window {
     surface_config: wgpu::SurfaceConfiguration,
     filter: Box<dyn Filter>,
     event_loop: EventLoop<()>,
-    window: Arc<winit::window::Window>,
+    window: winit::window::Window,
     gamepads: [u8; 4],
     next_frame: Instant,
     is_fullscreen: bool,
     is_open: bool,
+    scale_mode: ScaleMode,
 }
 
 impl Window {
     pub fn new(window_config: WindowConfig) -> Result<Window> {
         async fn create(window_config: WindowConfig) -> Result<Window> {
-            let event_loop = EventLoop::new()?;
+            let event_loop = EventLoop::new();
             let window = WindowBuilder::new()
                 .with_inner_size(PhysicalSize::new(
                     (320. * window_config.scale).round() as u32,
@@ -56,10 +59,8 @@ impl Window {
 
             window.set_cursor_visible(false);
 
-            let window = Arc::new(window);
-
             let instance = wgpu::Instance::new(Default::default());
-            let surface = instance.create_surface(window.clone())?;
+            let surface = unsafe { instance.create_surface(&window) }?;
             let adapter = instance
                 .request_adapter(&wgpu::RequestAdapterOptions {
                     power_preference: wgpu::PowerPreference::LowPower,
@@ -92,6 +93,7 @@ impl Window {
                 window.inner_size(),
                 surface_config.format,
                 window_config.filter,
+                window_config.scale_mode,
             );
 
             surface.configure(&device, &surface_config);
@@ -111,6 +113,7 @@ impl Window {
                 next_frame: Instant::now(),
                 is_fullscreen: window_config.fullscreen,
                 is_open: true,
+                scale_mode: window_config.scale_mode,
             })
         }
 
@@ -121,93 +124,103 @@ impl Window {
 impl WindowImpl for Window {
     fn begin_frame(&mut self) -> Input {
         let mut reset = false;
-        self.event_loop
-            .set_control_flow(ControlFlow::WaitUntil(self.next_frame));
-        while self.is_open {
-            let timeout = self.next_frame.saturating_duration_since(Instant::now());
-            let status = self.event_loop.pump_events(Some(timeout), |event, elwt| {
-                let mut new_filter = None;
-                match event {
-                    Event::WindowEvent { event, .. } => match event {
-                        WindowEvent::Resized(new_size) => {
-                            self.surface_config.width = new_size.width;
-                            self.surface_config.height = new_size.height;
-                            self.surface.configure(&self.device, &self.surface_config);
-                            self.filter.resize(&self.queue, new_size);
-                        }
-                        WindowEvent::CloseRequested => {
-                            elwt.exit();
-                        }
-                        WindowEvent::KeyboardInput { event, .. } => {
-                            fn gamepad_button(input: &winit::event::KeyEvent) -> u8 {
-                                match input.physical_key {
-                                    PhysicalKey::Code(KeyCode::KeyZ) => 16,
-                                    PhysicalKey::Code(KeyCode::KeyX) => 32,
-                                    PhysicalKey::Code(KeyCode::KeyA) => 64,
-                                    PhysicalKey::Code(KeyCode::KeyS) => 128,
-                                    _ => match input.logical_key {
-                                        Key::Named(NamedKey::ArrowUp) => 1,
-                                        Key::Named(NamedKey::ArrowDown) => 2,
-                                        Key::Named(NamedKey::ArrowLeft) => 4,
-                                        Key::Named(NamedKey::ArrowRight) => 8,
-                                        _ => 0,
-                                    },
-                                }
+        self.event_loop.run_return(|event, _, control_flow| {
+            *control_flow = ControlFlow::WaitUntil(self.next_frame);
+            let mut new_filter = None;
+            match event {
+                Event::WindowEvent { event, .. } => match event {
+                    WindowEvent::Resized(new_size) => {
+                        self.surface_config.width = new_size.width;
+                        self.surface_config.height = new_size.height;
+                        self.surface.configure(&self.device, &self.surface_config);
+                        self.filter.resize(&self.queue, new_size, self.scale_mode);
+                    }
+                    WindowEvent::CloseRequested => {
+                        self.is_open = false;
+                        *control_flow = ControlFlow::Exit;
+                    }
+                    WindowEvent::KeyboardInput { input, .. } => {
+                        fn gamepad_button(input: &winit::event::KeyboardInput) -> u8 {
+                            match input.scancode {
+                                44 => 16,
+                                45 => 32,
+                                30 => 64,
+                                31 => 128,
+                                _ => match input.virtual_keycode {
+                                    Some(VirtualKeyCode::Up) => 1,
+                                    Some(VirtualKeyCode::Down) => 2,
+                                    Some(VirtualKeyCode::Left) => 4,
+                                    Some(VirtualKeyCode::Right) => 8,
+                                    _ => 0,
+                                },
                             }
-                            if event.state == winit::event::ElementState::Pressed {
-                                match event.logical_key {
-                                    Key::Named(NamedKey::Escape) => {
-                                        elwt.exit();
-                                    }
-                                    Key::Character(ref c) => match c.as_str() {
-                                        "f" => {
-                                            let fullscreen = if self.window.fullscreen().is_some() {
-                                                None
-                                            } else {
-                                                Some(Fullscreen::Borderless(None))
-                                            };
-                                            self.is_fullscreen = fullscreen.is_some();
-                                            self.window.set_fullscreen(fullscreen);
-                                        }
-                                        "r" => reset = true,
-                                        "1" => new_filter = Some(1),
-                                        "2" => new_filter = Some(2),
-                                        "3" => new_filter = Some(3),
-                                        "4" => new_filter = Some(4),
-                                        "5" => new_filter = Some(5),
-                                        _ => (),
-                                    },
-                                    _ => (),
+                        }
+                        if input.state == winit::event::ElementState::Pressed {
+                            match input.virtual_keycode {
+                                Some(VirtualKeyCode::Escape) => {
+                                    self.is_open = false;
+                                    *control_flow = ControlFlow::Exit;
                                 }
+                                Some(VirtualKeyCode::F) => {
+                                    let fullscreen = if self.window.fullscreen().is_some() {
+                                        None
+                                    } else {
+                                        Some(Fullscreen::Borderless(None))
+                                    };
+                                    self.is_fullscreen = fullscreen.is_some();
+                                    self.window.set_fullscreen(fullscreen);
+                                }
+                                Some(VirtualKeyCode::M) => {
+                                    self.scale_mode = match self.scale_mode {
+                                        ScaleMode::Fit => ScaleMode::Fill,
+                                        ScaleMode::Fill => ScaleMode::Fit,
+                                    };
+                                    self.filter.resize(
+                                        &self.queue,
+                                        PhysicalSize {
+                                            width: self.surface_config.width,
+                                            height: self.surface_config.height,
+                                        },
+                                        self.scale_mode,
+                                    );
+                                }
+                                Some(VirtualKeyCode::R) => reset = true,
+                                Some(VirtualKeyCode::Key1) => new_filter = Some(1),
+                                Some(VirtualKeyCode::Key2) => new_filter = Some(2),
+                                Some(VirtualKeyCode::Key3) => new_filter = Some(3),
+                                Some(VirtualKeyCode::Key4) => new_filter = Some(4),
+                                Some(VirtualKeyCode::Key5) => new_filter = Some(5),
+                                _ => (),
+                            }
 
-                                self.gamepads[0] |= gamepad_button(&event);
-                            } else {
-                                self.gamepads[0] &= !gamepad_button(&event);
-                            }
+                            self.gamepads[0] |= gamepad_button(&input);
+                        } else {
+                            self.gamepads[0] &= !gamepad_button(&input);
                         }
-                        _ => (),
-                    },
+                    }
                     _ => (),
+                },
+                Event::RedrawEventsCleared => {
+                    if Instant::now() >= self.next_frame
+                        // workaround needed on Wayland until the next winit release
+                        && self.window.fullscreen().is_some() == self.is_fullscreen
+                    {
+                        *control_flow = ControlFlow::Exit
+                    }
                 }
-                if let Some(new_filter) = new_filter {
-                    self.filter = create_filter(
-                        &self.device,
-                        &self.palette_screen_mode.screen_view,
-                        self.window.inner_size(),
-                        self.surface_config.format,
-                        new_filter,
-                    );
-                }
-            });
-            match status {
-                PumpStatus::Exit(_) => self.is_open = false,
                 _ => (),
             }
-
-            if Instant::now() >= self.next_frame {
-                break;
+            if let Some(new_filter) = new_filter {
+                self.filter = create_filter(
+                    &self.device,
+                    &self.palette_screen_mode.screen_view,
+                    self.window.inner_size(),
+                    self.surface_config.format,
+                    new_filter,
+                    self.scale_mode,
+                );
             }
-        }
+        });
         Input {
             gamepads: self.gamepads,
             reset,
@@ -243,12 +256,10 @@ impl WindowImpl for Window {
                             b: 0.0,
                             a: 1.0,
                         }),
-                        store: wgpu::StoreOp::Store,
+                        store: true,
                     },
                 })],
                 depth_stencil_attachment: None,
-                timestamp_writes: None,
-                occlusion_query_set: None,
             });
 
             self.filter.render(&mut render_pass);
@@ -269,6 +280,7 @@ fn create_filter(
     window_size: PhysicalSize<u32>,
     surface_format: wgpu::TextureFormat,
     filter: u32,
+    scale_mode: ScaleMode,
 ) -> Box<dyn Filter> {
     match filter {
         1 => Box::new(SquareFilter::new(
@@ -276,6 +288,7 @@ fn create_filter(
             screen_texture,
             window_size,
             surface_format,
+            scale_mode,
         )),
         2 => Box::new(FastCrtFilter::new(
             device,
@@ -283,12 +296,14 @@ fn create_filter(
             window_size,
             surface_format,
             false,
+            scale_mode,
         )),
         3 => Box::new(CrtFilter::new(
             device,
             screen_texture,
             window_size,
             surface_format,
+            scale_mode,
         )),
         4 => Box::new(FastCrtFilter::new(
             device,
@@ -296,18 +311,20 @@ fn create_filter(
             window_size,
             surface_format,
             true,
+            scale_mode,
         )),
         _ => Box::new(AutoCrtFilter::new(
             device,
             screen_texture,
             window_size,
             surface_format,
+            scale_mode,
         )),
     }
 }
 
 trait Filter {
-    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>);
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>, scale_mode: ScaleMode);
     fn render<'a>(&'a self, render_pass: &mut wgpu::RenderPass<'a>);
 }
 
@@ -323,9 +340,11 @@ impl AutoCrtFilter {
         screen: &wgpu::TextureView,
         resolution: PhysicalSize<u32>,
         surface_format: wgpu::TextureFormat,
+        scale_mode: ScaleMode,
     ) -> AutoCrtFilter {
-        let small = CrtFilter::new(device, screen, resolution, surface_format);
-        let large = FastCrtFilter::new(device, screen, resolution, surface_format, true);
+        let small = CrtFilter::new(device, screen, resolution, surface_format, scale_mode);
+        let large =
+            FastCrtFilter::new(device, screen, resolution, surface_format, true, scale_mode);
         AutoCrtFilter {
             small,
             large,
@@ -335,9 +354,9 @@ impl AutoCrtFilter {
 }
 
 impl Filter for AutoCrtFilter {
-    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
-        self.small.resize(queue, new_size);
-        self.large.resize(queue, new_size);
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>, scale_mode: ScaleMode) {
+        self.small.resize(queue, new_size, scale_mode);
+        self.large.resize(queue, new_size, scale_mode);
         self.resolution = new_size;
     }
 
@@ -550,12 +569,10 @@ impl PaletteScreenMode {
                 resolve_target: None,
                 ops: wgpu::Operations {
                     load: wgpu::LoadOp::Load,
-                    store: wgpu::StoreOp::Store,
+                    store: true,
                 },
             })],
             depth_stencil_attachment: None,
-            timestamp_writes: None,
-            occlusion_query_set: None,
         });
 
         render_pass.set_pipeline(&self.pipeline);

uw8-window/src/gpu/scale_mode.rs

@@ -0,0 +1,28 @@
+use winit::dpi::PhysicalSize;
+
+#[derive(Debug, Copy, Clone)]
+pub enum ScaleMode {
+    Fit,
+    Fill,
+}
+
+impl Default for ScaleMode {
+    fn default() -> ScaleMode {
+        ScaleMode::Fit
+    }
+}
+
+impl ScaleMode {
+    pub fn texture_scale_from_resolution(&self, res: PhysicalSize<u32>) -> [f32; 4] {
+        let scale = match self {
+            ScaleMode::Fit => ((res.width as f32) / 160.0).min((res.height as f32) / 120.0),
+            ScaleMode::Fill => ((res.width as f32) / 160.0).max((res.height as f32) / 120.0),
+        };
+        [
+            scale / res.width as f32,
+            scale / res.height as f32,
+            2.0 / scale,
+            0.0,
+        ]
+    }
+}

uw8-window/src/gpu/square.rs

@@ -1,7 +1,7 @@
 use wgpu::util::DeviceExt;
 use winit::dpi::PhysicalSize;
 
-use super::Filter;
+use super::{scale_mode::ScaleMode, Filter};
 
 pub struct SquareFilter {
     uniform_buffer: wgpu::Buffer,
@@ -15,9 +15,10 @@ impl SquareFilter {
         screen: &wgpu::TextureView,
         resolution: PhysicalSize<u32>,
         surface_format: wgpu::TextureFormat,
+        scale_mode: ScaleMode,
     ) -> SquareFilter {
         let uniforms = Uniforms {
-            texture_scale: texture_scale_from_resolution(resolution),
+            texture_scale: scale_mode.texture_scale_from_resolution(resolution),
         };
 
         let uniform_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
@@ -126,9 +127,9 @@ impl SquareFilter {
 }
 
 impl Filter for SquareFilter {
-    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>, scale_mode: ScaleMode) {
         let uniforms = Uniforms {
-            texture_scale: texture_scale_from_resolution(new_size),
+            texture_scale: scale_mode.texture_scale_from_resolution(new_size),
         };
         queue.write_buffer(&self.uniform_buffer, 0, bytemuck::cast_slice(&[uniforms]));
     }
@@ -140,16 +141,6 @@ impl Filter for SquareFilter {
     }
 }
 
-fn texture_scale_from_resolution(res: PhysicalSize<u32>) -> [f32; 4] {
-    let scale = ((res.width as f32) / 160.0).min((res.height as f32) / 120.0);
-    [
-        scale / res.width as f32,
-        scale / res.height as f32,
-        2.0 / scale,
-        0.0,
-    ]
-}
-
 #[repr(C)]
 #[derive(Debug, Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
 struct Uniforms {

uw8-window/src/lib.rs

@@ -1,4 +1,5 @@
 use anyhow::Result;
+use gpu::scale_mode::ScaleMode;
 use std::time::Instant;
 
 mod cpu;
@@ -73,6 +74,7 @@ pub struct WindowConfig {
     fullscreen: bool,
     fps_counter: bool,
     scale: f32,
+    scale_mode: ScaleMode,
 }
 
 impl Default for WindowConfig {
@@ -83,6 +85,7 @@ impl Default for WindowConfig {
             fullscreen: false,
             fps_counter: false,
             scale: 2.,
+            scale_mode: ScaleMode::Fit,
         }
     }
 }
@@ -109,6 +112,9 @@ impl WindowConfig {
             .opt_value_from_str("--scale")
             .unwrap()
             .unwrap_or(self.scale);
+        if args.contains("--scale-fill") {
+            self.scale_mode = ScaleMode::Fill;
+        }
     }
 }
 

web/src/index.html

@@ -10,7 +10,7 @@
     </head>
     <body>
         <div id="uw8">
-            <a href="https://exoticorn.github.io/microw8">MicroW8</a> 0.4.0
+            <a href="https://exoticorn.github.io/microw8">MicroW8</a> 0.4.1
         </div>
         <div id="centered">
             <canvas class="screen" id="screen" width="320" height="240">