Replace fxhash with rustc-hash (#3502)

Co-authored-by: Connor Fitzgerald <connorwadefitzgerald@gmail.com>

CHANGELOG.md

@@ -73,6 +73,7 @@ By @teoxoy in [#3436](https://github.com/gfx-rs/wgpu/pull/3436)
 #### General
 
 - Change type of `mip_level_count` and `array_layer_count` (members of `TextureViewDescriptor` and `ImageSubresourceRange`) from `Option<NonZeroU32>` to `Option<u32>`. By @teoxoy in [#3445](https://github.com/gfx-rs/wgpu/pull/3445)
+- All `fxhash` dependencies have been replaced with `rustc-hash`. By @james7132 in [#3502](https://github.com/gfx-rs/wgpu/pull/3502)
 
 ### Changes
 

Cargo.lock

@@ -1008,15 +1008,6 @@ dependencies = [
  "slab",
 ]
 
-[[package]]
-name = "fxhash"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c31b6d751ae2c7f11320402d34e41349dd1016f8d5d45e48c4312bc8625af50c"
-dependencies = [
- "byteorder",
-]
-
 [[package]]
 name = "getrandom"
 version = "0.1.16"
@@ -3058,13 +3049,13 @@ dependencies = [
  "bit-vec",
  "bitflags",
  "codespan-reporting",
- "fxhash",
  "log",
  "naga",
  "parking_lot 0.12.1",
  "profiling",
  "raw-window-handle 0.5.0",
  "ron",
+ "rustc-hash",
  "serde",
  "smallvec",
  "thiserror",
@@ -3087,7 +3078,6 @@ dependencies = [
  "d3d12",
  "env_logger",
  "foreign-types 0.3.2",
- "fxhash",
  "glow",
  "glutin",
  "gpu-alloc",
@@ -3107,6 +3097,7 @@ dependencies = [
  "range-alloc",
  "raw-window-handle 0.5.0",
  "renderdoc-sys",
+ "rustc-hash",
  "smallvec",
  "thiserror",
  "wasm-bindgen",

Cargo.toml

@@ -58,7 +58,7 @@ codespan-reporting = "0.11"
 ddsfile = "0.5"
 env_logger = "0.10"
 futures-intrusive = "0.4"
-fxhash = "0.2.1"
+rustc-hash = "1.1.0"
 glam = "0.21.3"
 image = { version = "0.24", default-features = false, features = ["png"] }
 libloading = "0.7"

wgpu-core/Cargo.toml

@@ -54,7 +54,7 @@ arrayvec = "0.7"
 bitflags = "1"
 bit-vec = "0.6"
 codespan-reporting = "0.11"
-fxhash = "0.2.1"
+rustc-hash = "1.1"
 log = "0.4"
 # parking_lot 0.12 switches from `winapi` to `windows`; permit either
 parking_lot = ">=0.11,<0.13"

wgpu-core/src/lib.rs

@@ -388,9 +388,10 @@ macro_rules! gfx_select {
 
 /// Fast hash map used internally.
 type FastHashMap<K, V> =
-    std::collections::HashMap<K, V, std::hash::BuildHasherDefault<fxhash::FxHasher>>;
+    std::collections::HashMap<K, V, std::hash::BuildHasherDefault<rustc_hash::FxHasher>>;
 /// Fast hash set used internally.
-type FastHashSet<K> = std::collections::HashSet<K, std::hash::BuildHasherDefault<fxhash::FxHasher>>;
+type FastHashSet<K> =
+    std::collections::HashSet<K, std::hash::BuildHasherDefault<rustc_hash::FxHasher>>;
 
 #[inline]
 pub(crate) fn get_lowest_common_denom(a: u32, b: u32) -> u32 {

wgpu-hal/Cargo.toml

@@ -60,7 +60,7 @@ thiserror = "1"
 
 # backends common
 arrayvec = "0.7"
-fxhash = "0.2.1"
+rustc-hash = "1.1"
 log = "0.4"
 
 # backend: Gles

wgpu-hal/src/gles/device.rs

@@ -16,7 +16,7 @@ type ShaderStage<'a> = (
     naga::ShaderStage,
     &'a crate::ProgrammableStage<'a, super::Api>,
 );
-type NameBindingMap = fxhash::FxHashMap<String, (super::BindingRegister, u8)>;
+type NameBindingMap = rustc_hash::FxHashMap<String, (super::BindingRegister, u8)>;
 
 struct CompilationContext<'a> {
     layout: &'a super::PipelineLayout,

wgpu-hal/src/metal/mod.rs

@@ -762,7 +762,7 @@ struct CommandState {
     /// See [`device::CompiledShader::sized_bindings`] for more details.
     ///
     /// [`ResourceBinding`]: naga::ResourceBinding
-    storage_buffer_length_map: fxhash::FxHashMap<naga::ResourceBinding, wgt::BufferSize>,
+    storage_buffer_length_map: rustc_hash::FxHashMap<naga::ResourceBinding, wgt::BufferSize>,
 
     work_group_memory_sizes: Vec<u32>,
     push_constants: Vec<u32>,

wgpu-hal/src/vulkan/mod.rs

@@ -252,8 +252,8 @@ struct DeviceShared {
     downlevel_flags: wgt::DownlevelFlags,
     private_caps: PrivateCapabilities,
     workarounds: Workarounds,
-    render_passes: Mutex<fxhash::FxHashMap<RenderPassKey, vk::RenderPass>>,
-    framebuffers: Mutex<fxhash::FxHashMap<FramebufferKey, vk::Framebuffer>>,
+    render_passes: Mutex<rustc_hash::FxHashMap<RenderPassKey, vk::RenderPass>>,
+    framebuffers: Mutex<rustc_hash::FxHashMap<FramebufferKey, vk::Framebuffer>>,
 }
 
 pub struct Device {