update pixels backend api

gb-emu/build.rs

@@ -1,9 +1,9 @@
-const SHADER_SRC_DIR: &str = "src/renderer/vulkan/shaders";
-const SHADER_OUT_DIR: &str = "shaders";
-
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     #[cfg(feature = "vulkan")]
     {
+        const SHADER_SRC_DIR: &str = "src/renderer/vulkan/shaders";
+        const SHADER_OUT_DIR: &str = "shaders";
+
         println!("cargo:rerun-if-changed={}", SHADER_SRC_DIR);
         std::fs::create_dir_all(SHADER_OUT_DIR)?;
 

gb-emu/src/renderer/pixels.rs

@@ -1,22 +1,38 @@
+use std::sync::Arc;
+
 use pixels::{Pixels, SurfaceTexture};
 use winit::window::Window;
-pub struct Renderer {
+
+use super::ResolutionData;
+
+pub struct RendererBackendManager {}
+
+impl RendererBackendManager {
+    pub(super) fn new() -> Self {
+        Self {}
+    }
+}
+
+pub struct WindowOptions {}
+
+pub struct RendererBackend {
     pub pixels: Pixels,
 }
 
-impl Renderer {
-    pub fn new(factor: u32, window: &Window) -> Self {
-        let pixels = {
-            let window_size = window.inner_size();
-            let width = window_size.width / factor;
-            let height = window_size.height / factor;
-            new_pixels(width, height, factor, window)
-        };
-        Self { pixels }
+impl RendererBackend {
+    pub fn new(
+        resolutions: ResolutionData,
+        window: &Window,
+        _: WindowOptions,
+        _: Arc<RendererBackendManager>,
+    ) -> Self {
+        Self {
+            pixels: new_pixels(resolutions, window),
+        }
     }
 
-    pub fn resize(&mut self, width: u32, height: u32, factor: u32, window: &Window) {
-        self.pixels = new_pixels(width, height, factor, window);
+    pub fn resize(&mut self, resolutions: ResolutionData, window: &Window) {
+        self.pixels = new_pixels(resolutions, window);
     }
 
     pub fn new_frame(&mut self, buffer: &[[u8; 4]]) {
@@ -25,19 +41,23 @@ impl Renderer {
             .copy_from_slice(bytemuck::cast_slice(buffer));
     }
 
-    pub fn render(&mut self) {
+    pub fn render(&mut self, _: ResolutionData, _: &RendererBackendManager) {
         self.pixels.render().unwrap();
     }
 }
 
-fn new_pixels(width: u32, height: u32, scaling: u32, window: &Window) -> Pixels {
+fn new_pixels(resolutions: ResolutionData, window: &Window) -> Pixels {
     let surface_texture: SurfaceTexture<'_, Window> =
-        SurfaceTexture::new(width * scaling, height * scaling, window);
-    pixels::PixelsBuilder::new(width, height, surface_texture)
-        .request_adapter_options(pixels::wgpu::RequestAdapterOptionsBase {
-            power_preference: pixels::wgpu::PowerPreference::HighPerformance,
-            ..pixels::wgpu::RequestAdapterOptionsBase::default()
-        })
-        .build()
-        .unwrap()
+        SurfaceTexture::new(resolutions.real_width, resolutions.real_height, window);
+    pixels::PixelsBuilder::new(
+        resolutions.scaled_width,
+        resolutions.scaled_height,
+        surface_texture,
+    )
+    .request_adapter_options(pixels::wgpu::RequestAdapterOptionsBase {
+        power_preference: pixels::wgpu::PowerPreference::HighPerformance,
+        ..pixels::wgpu::RequestAdapterOptionsBase::default()
+    })
+    .build()
+    .unwrap()
 }

gb-emu/src/window.rs

@@ -8,6 +8,7 @@ use gilrs::{
     ff::{BaseEffect, BaseEffectType, EffectBuilder, Replay, Ticks},
     Button, Gilrs,
 };
+#[cfg(feature = "vulkan")]
 use raw_window_handle::HasRawDisplayHandle;
 use winit::{
     dpi::PhysicalSize,
@@ -157,11 +158,14 @@ impl WindowRenderer {
             scaled_height: inner_size.height / real_factor,
         };
 
+        #[cfg(feature = "vulkan")]
         let options = WindowOptions {
             shader_path: std::path::PathBuf::from(
                 "./test-roms/shaders/slang-shaders/bilinear.slangp",
             ),
         };
+        #[cfg(feature = "pixels")]
+        let options = WindowOptions {};
 
         let renderer = Mutex::new(RendererBackend::new(resolutions, &window, options, manager));
         let id = window.id();