rt(wgpu): don't use rayon on wasm32

doesn't build on wasm32 because missing glslang but that should be the only snag now

librashader-runtime-wgpu/Cargo.toml

@@ -24,10 +24,12 @@ wgpu = { version = "0.19.0", features = ["spirv"] }
 rustc-hash = "1.1.0"
 image = "0.24.7"
 thiserror = "1.0.50"
-rayon = "1.8.0"
 bytemuck = { version = "1.14.0", features = ["derive"] }
 array-concat = "0.5.2"
 
+[target.'cfg(not(target_arch="wasm32"))'.dependencies]
+rayon = "1.8.1"
+
 [dev-dependencies]
 config = { version = "0.13.4", features = [] }
 env_logger = "0.10.1"

librashader-runtime-wgpu/src/filter_chain.rs

@@ -9,6 +9,8 @@ use librashader_runtime::binding::BindingUtil;
 use librashader_runtime::image::{Image, ImageError, UVDirection};
 use librashader_runtime::quad::QuadType;
 use librashader_runtime::uniforms::UniformStorage;
+#[cfg(not(target_arch = "wasm32"))]
+use rayon::prelude::*;
 use rustc_hash::FxHashMap;
 use std::collections::VecDeque;
 use std::path::Path;
@@ -22,7 +24,6 @@ use librashader_reflect::back::wgsl::WgslCompileOptions;
 use librashader_runtime::framebuffer::FramebufferInit;
 use librashader_runtime::render_target::RenderTarget;
 use librashader_runtime::scaling::ScaleFramebuffer;
-use rayon::prelude::*;
 use wgpu::{Device, TextureFormat};
 
 use crate::error;
@@ -213,8 +214,14 @@ impl FilterChainWgpu {
         textures: &[TextureConfig],
     ) -> error::Result<FxHashMap<usize, LutTexture>> {
         let mut luts = FxHashMap::default();
-        let images = textures
-            .par_iter()
+
+        #[cfg(not(target_arch = "wasm32"))]
+        let images_iter = textures.par_iter();
+
+        #[cfg(target_arch = "wasm32")]
+        let images_iter = textures.iter();
+
+        let images = images_iter
             .map(|texture| Image::load(&texture.path, UVDirection::TopLeft))
             .collect::<Result<Vec<Image>, ImageError>>()?;
         for (index, (texture, image)) in textures.iter().zip(images).enumerate() {
@@ -251,8 +258,12 @@ impl FilterChainWgpu {
         passes: Vec<ShaderPassMeta>,
         semantics: &ShaderSemantics,
     ) -> error::Result<Box<[FilterPass]>> {
-        let filters: Vec<error::Result<FilterPass>> = passes
-            .into_par_iter()
+        #[cfg(not(target_arch = "wasm32"))]
+        let passes_iter = passes.into_par_iter();
+        #[cfg(target_arch = "wasm32")]
+        let passes_iter = passes.into_iter();
+
+        let filters: Vec<error::Result<FilterPass>> = passes_iter
             .enumerate()
             .map(|(index, (config, source, mut reflect))| {
                 let reflection = reflect.reflect(index, semantics)?;

librashader-runtime-wgpu/tests/hello_triangle.rs

@@ -1,8 +1,6 @@
 use std::sync::Arc;
-use wgpu::Maintain;
 use winit::{
     event::*,
-    event_loop::{ControlFlow, EventLoop},
     window::{Window, WindowBuilder},
 };
 
@@ -11,7 +9,6 @@ use librashader_presets::ShaderPreset;
 use librashader_runtime_wgpu::FilterChainWgpu;
 use wgpu::util::DeviceExt;
 use winit::event_loop::EventLoopBuilder;
-use winit::keyboard::{Key, KeyCode, PhysicalKey};
 use winit::platform::windows::EventLoopBuilderExtWindows;
 
 #[cfg(target_arch = "wasm32")]
@@ -107,7 +104,7 @@ impl<'a> State<'a> {
         let swapchain_capabilities = surface.get_capabilities(&adapter);
         let swapchain_format = swapchain_capabilities.formats[0];
 
-        let mut config = wgpu::SurfaceConfiguration {
+        let config = wgpu::SurfaceConfiguration {
             usage: wgpu::TextureUsages::RENDER_ATTACHMENT | wgpu::TextureUsages::COPY_DST,
             format: swapchain_format,
             width: size.width,
@@ -212,7 +209,7 @@ impl<'a> State<'a> {
             self.surface.configure(&self.device, &self.config);
         }
     }
-    fn input(&mut self, event: &WindowEvent) -> bool {
+    fn input(&mut self, _event: &WindowEvent) -> bool {
         false
     }
     fn update(&mut self) {}