处理【隐形墨水特效】在不同像素密度下的边界情况

code/integration-and-debugging/wgpu_in_web/src/particle_ink.rs

@@ -48,14 +48,24 @@ impl ParticleInk {
     pub fn new(app: &AppSurface, gen: &ParticleGen) -> Self {
         let particle_count = gen.count as usize;
         let scale_factor = app.scale_factor;
-        let tex_size = gen.text_tex.size;
+
+        let surface_size = vec2(app.config.width as f32, app.config.height as f32);
+        let mut tex_size = vec2(
+            gen.text_tex.size.width as f32,
+            gen.text_tex.size.height as f32,
+        );
+        // 如果 tex_size 的 x 或 y 大于 surface_size，则等比缩放 tex_size
+        if tex_size.x > surface_size.x || tex_size.y > surface_size.y {
+            let scale_factor = (surface_size.x / tex_size.x).min(surface_size.y / tex_size.y);
+            tex_size *= scale_factor;
+        }
 
         // 视口位置与大小
         let viewport = Vec4::new(
-            (app.config.width as f32 - tex_size.width as f32) / 2.0,
-            (app.config.height as f32 - tex_size.height as f32) / 2.0,
-            tex_size.width as f32,
-            tex_size.height as f32,
+            (app.config.width as f32 - tex_size.x as f32) / 2.0,
+            (app.config.height as f32 - tex_size.y as f32) / 2.0,
+            tex_size.x,
+            tex_size.y,
         );
 
         // 粒子像素尺寸

code/utils/src/lib.rs

@@ -51,7 +51,7 @@ pub(crate) fn application_root_dir() -> String {
                 "/"
             }
     } else if host.contains("jinleili.github.io") {
-        href
+        String::from("https://jinleili.github.io/learn-wgpu-zh/")
     } else {
         String::from("https://cannot.access/")
     }

code/utils/src/load_texture.rs

@@ -14,7 +14,6 @@ pub struct AnyTexture {
 
 #[cfg(target_arch = "wasm32")]
 pub async fn get_web_img(img_name: &str) -> Result<Vec<u8>, reqwest::Error> {
-    log::info!("super::application_root_dir(): {}", super::application_root_dir());
     let url =
         reqwest::Url::parse(&format!("{}{}", super::application_root_dir(), img_name,)).unwrap();
     let data = reqwest::get(url).await?.bytes().await?.to_vec();