Rustfmt stable pass

rustfmt.toml

@@ -1,4 +0,0 @@
-newline_style = "Native"
-blank_lines_upper_bound = 2
-spaces_around_ranges = true
-imports_layout = "HorizontalVertical"

wgpu-core/src/binding_model.rs

@@ -4,16 +4,13 @@
 
 use crate::{
     id::{BindGroupLayoutId, BufferId, DeviceId, SamplerId, TextureViewId},
-    track::{DUMMY_SELECTOR, TrackerSet},
-    FastHashMap,
-    LifeGuard,
-    RefCount,
-    Stored,
+    track::{TrackerSet, DUMMY_SELECTOR},
+    FastHashMap, LifeGuard, RefCount, Stored,
 };
 
-use wgt::{BufferAddress, TextureComponentType};
 use arrayvec::ArrayVec;
 use gfx_descriptor::{DescriptorCounts, DescriptorSet};
+use wgt::{BufferAddress, TextureComponentType};
 
 #[cfg(feature = "serde")]
 use serde_crate::{Deserialize, Serialize};
@@ -21,7 +18,11 @@ use std::borrow::Borrow;
 
 #[repr(C)]
 #[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub enum BindingType {
     UniformBuffer = 0,
     StorageBuffer = 1,
@@ -35,7 +36,11 @@ pub enum BindingType {
 
 #[repr(C)]
 #[derive(Clone, Debug, Hash, PartialEq)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub struct BindGroupLayoutEntry {
     pub binding: u32,
     pub visibility: wgt::ShaderStage,
@@ -80,7 +85,11 @@ pub struct PipelineLayout<B: hal::Backend> {
 
 #[repr(C)]
 #[derive(Debug)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub struct BufferBinding {
     pub buffer: BufferId,
     pub offset: BufferAddress,
@@ -89,7 +98,11 @@ pub struct BufferBinding {
 
 #[repr(C)]
 #[derive(Debug)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub enum BindingResource {
     Buffer(BufferBinding),
     Sampler(SamplerId),
@@ -98,7 +111,11 @@ pub enum BindingResource {
 
 #[repr(C)]
 #[derive(Debug)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub struct BindGroupEntry {
     pub binding: u32,
     pub resource: BindingResource,

wgpu-core/src/command/allocator.rs

@@ -4,13 +4,7 @@
 
 use super::CommandBuffer;
 use crate::{
-    hub::GfxBackend,
-    id::DeviceId,
-    track::TrackerSet,
-    Features,
-    LifeGuard,
-    Stored,
-    SubmissionIndex,
+    hub::GfxBackend, id::DeviceId, track::TrackerSet, Features, LifeGuard, Stored, SubmissionIndex,
 };
 
 use hal::{command::CommandBuffer as _, device::Device as _, pool::CommandPool as _};
@@ -27,7 +21,7 @@ struct CommandPool<B: hal::Backend> {
 
 impl<B: hal::Backend> CommandPool<B> {
     fn maintain(&mut self, lowest_active_index: SubmissionIndex) {
-        for i in (0 .. self.pending.len()).rev() {
+        for i in (0..self.pending.len()).rev() {
             let index = self.pending[i]
                 .life_guard
                 .submission_index
@@ -55,7 +49,10 @@ impl<B: hal::Backend> CommandPool<B> {
 
     fn allocate(&mut self) -> B::CommandBuffer {
         if self.available.is_empty() {
-            unsafe { self.raw.allocate(20, hal::command::Level::Primary, &mut self.available) };
+            unsafe {
+                self.raw
+                    .allocate(20, hal::command::Level::Primary, &mut self.available)
+            };
         }
         self.available.pop().unwrap()
     }
@@ -131,7 +128,10 @@ impl<B: hal::Backend> CommandAllocator<B> {
         let pool = inner.pools.get_mut(&cmd_buf.recorded_thread_id).unwrap();
 
         if pool.available.is_empty() {
-            unsafe { pool.raw.allocate(20, hal::command::Level::Primary, &mut pool.available) };
+            unsafe {
+                pool.raw
+                    .allocate(20, hal::command::Level::Primary, &mut pool.available)
+            };
         }
 
         pool.available.pop().unwrap()

wgpu-core/src/command/bind.rs

@@ -10,8 +10,8 @@ use crate::{
 };
 
 use smallvec::{smallvec, SmallVec};
-use wgt::DynamicOffset;
 use std::slice;
+use wgt::DynamicOffset;
 
 pub const DEFAULT_BIND_GROUPS: usize = 4;
 type BindGroupMask = u8;
@@ -44,12 +44,7 @@ impl<'a> Iterator for FollowUpIter<'a> {
     fn next(&mut self) -> Option<Self::Item> {
         self.iter
             .next()
-            .and_then(|entry| {
-                Some((
-                    entry.actual_value()?,
-                    entry.dynamic_offsets.as_slice(),
-                ))
-            })
+            .and_then(|entry| Some((entry.actual_value()?, entry.dynamic_offsets.as_slice())))
     }
 }
 
@@ -151,7 +146,7 @@ impl Binder {
     }
 
     pub(crate) fn reset_expectations(&mut self, length: usize) {
-        for entry in self.entries[length ..].iter_mut() {
+        for entry in self.entries[length..].iter_mut() {
             entry.expected_layout_id = None;
         }
     }
@@ -185,8 +180,8 @@ impl Binder {
                     Some((
                         self.pipeline_layout_id?,
                         FollowUpIter {
-                            iter: self.entries[index + 1 .. end].iter(),
-                        }
+                            iter: self.entries[index + 1..end].iter(),
+                        },
                     ))
                 } else {
                     log::trace!("\t\tskipping above compatible {}", compatible_count);

wgpu-core/src/command/compute.rs

@@ -5,17 +5,16 @@
 use crate::{
     command::{
         bind::{Binder, LayoutChange},
-        CommandBuffer,
-        PhantomSlice,
+        CommandBuffer, PhantomSlice,
     },
     device::all_buffer_stages,
     hub::{GfxBackend, Global, GlobalIdentityHandlerFactory, Token},
     id,
 };
 
-use wgt::{BufferAddress, BufferUsage, DynamicOffset, BIND_BUFFER_ALIGNMENT};
 use hal::command::CommandBuffer as _;
 use peek_poke::{Peek, PeekPoke, Poke};
+use wgt::{BufferAddress, BufferUsage, DynamicOffset, BIND_BUFFER_ALIGNMENT};
 
 use std::iter;
 
@@ -90,17 +89,24 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let mut pipeline_state = PipelineState::Required;
 
         let mut peeker = raw_data.as_ptr();
-        let raw_data_end = unsafe {
-            raw_data.as_ptr().add(raw_data.len())
-        };
+        let raw_data_end = unsafe { raw_data.as_ptr().add(raw_data.len()) };
         let mut command = ComputeCommand::Dispatch([0; 3]); // dummy
         loop {
             assert!(unsafe { peeker.add(ComputeCommand::max_size()) } <= raw_data_end);
             peeker = unsafe { ComputeCommand::peek_from(peeker, &mut command) };
             match command {
-                ComputeCommand::SetBindGroup { index, num_dynamic_offsets, bind_group_id, phantom_offsets } => {
+                ComputeCommand::SetBindGroup {
+                    index,
+                    num_dynamic_offsets,
+                    bind_group_id,
+                    phantom_offsets,
+                } => {
                     let (new_peeker, offsets) = unsafe {
-                        phantom_offsets.decode_unaligned(peeker, num_dynamic_offsets as usize, raw_data_end)
+                        phantom_offsets.decode_unaligned(
+                            peeker,
+                            num_dynamic_offsets as usize,
+                            raw_data_end,
+                        )
                     };
                     peeker = new_peeker;
 
@@ -136,11 +142,14 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         &*texture_guard,
                     );
 
-                    if let Some((pipeline_layout_id, follow_ups)) = binder
-                        .provide_entry(index as usize, bind_group_id, bind_group, offsets)
+                    if let Some((pipeline_layout_id, follow_ups)) =
+                        binder.provide_entry(index as usize, bind_group_id, bind_group, offsets)
                     {
-                        let bind_groups = iter::once(bind_group.raw.raw())
-                            .chain(follow_ups.clone().map(|(bg_id, _)| bind_group_guard[bg_id].raw.raw()));
+                        let bind_groups = iter::once(bind_group.raw.raw()).chain(
+                            follow_ups
+                                .clone()
+                                .map(|(bg_id, _)| bind_group_guard[bg_id].raw.raw()),
+                        );
                         unsafe {
                             raw.bind_compute_descriptor_sets(
                                 &pipeline_layout_guard[pipeline_layout_id].raw,
@@ -156,7 +165,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 }
                 ComputeCommand::SetPipeline(pipeline_id) => {
                     pipeline_state = PipelineState::Set;
-                    let pipeline = cmb.trackers
+                    let pipeline = cmb
+                        .trackers
                         .compute_pipes
                         .use_extend(&*pipeline_guard, pipeline_id, (), ())
                         .unwrap();
@@ -169,8 +179,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     if binder.pipeline_layout_id != Some(pipeline.layout_id) {
                         let pipeline_layout = &pipeline_layout_guard[pipeline.layout_id];
                         binder.pipeline_layout_id = Some(pipeline.layout_id);
-                        binder
-                            .reset_expectations(pipeline_layout.bind_group_layout_ids.len());
+                        binder.reset_expectations(pipeline_layout.bind_group_layout_ids.len());
                         let mut is_compatible = true;
 
                         for (index, (entry, &bgl_id)) in binder
@@ -200,13 +209,21 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     }
                 }
                 ComputeCommand::Dispatch(groups) => {
-                    assert_eq!(pipeline_state, PipelineState::Set, "Dispatch error: Pipeline is missing");
+                    assert_eq!(
+                        pipeline_state,
+                        PipelineState::Set,
+                        "Dispatch error: Pipeline is missing"
+                    );
                     unsafe {
                         raw.dispatch(groups);
                     }
                 }
                 ComputeCommand::DispatchIndirect { buffer_id, offset } => {
-                    assert_eq!(pipeline_state, PipelineState::Set, "Dispatch error: Pipeline is missing");
+                    assert_eq!(
+                        pipeline_state,
+                        PipelineState::Set,
+                        "Dispatch error: Pipeline is missing"
+                    );
                     let (src_buffer, src_pending) = cmb.trackers.buffers.use_replace(
                         &*buffer_guard,
                         buffer_id,
@@ -219,7 +236,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
                     unsafe {
                         raw.pipeline_barrier(
-                            all_buffer_stages() .. all_buffer_stages(),
+                            all_buffer_stages()..all_buffer_stages(),
                             hal::memory::Dependencies::empty(),
                             barriers,
                         );
@@ -234,15 +251,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
 pub mod compute_ffi {
     use super::{
-        ComputeCommand,
         super::{PhantomSlice, RawPass},
+        ComputeCommand,
     };
-    use crate::{
-        id,
-        RawString,
-    };
-use wgt::{BufferAddress, DynamicOffset};
+    use crate::{id, RawString};
     use std::{convert::TryInto, slice};
+    use wgt::{BufferAddress, DynamicOffset};
 
     /// # Safety
     ///
@@ -264,9 +278,7 @@ use wgt::{BufferAddress, DynamicOffset};
             bind_group_id,
             phantom_offsets: PhantomSlice::default(),
         });
-        pass.encode_slice(
-            slice::from_raw_parts(offsets, offset_length),
-        );
+        pass.encode_slice(slice::from_raw_parts(offsets, offset_length));
     }
 
     #[no_mangle]
@@ -293,24 +305,16 @@ use wgt::{BufferAddress, DynamicOffset};
         buffer_id: id::BufferId,
         offset: BufferAddress,
     ) {
-        pass.encode(&ComputeCommand::DispatchIndirect {
-            buffer_id,
-            offset,
-        });
+        pass.encode(&ComputeCommand::DispatchIndirect { buffer_id, offset });
     }
 
     #[no_mangle]
-    pub extern "C" fn wgpu_compute_pass_push_debug_group(
-        _pass: &mut RawPass,
-        _label: RawString,
-    ) {
+    pub extern "C" fn wgpu_compute_pass_push_debug_group(_pass: &mut RawPass, _label: RawString) {
         //TODO
     }
 
     #[no_mangle]
-    pub extern "C" fn wgpu_compute_pass_pop_debug_group(
-        _pass: &mut RawPass,
-    ) {
+    pub extern "C" fn wgpu_compute_pass_pop_debug_group(_pass: &mut RawPass) {
         //TODO
     }
 

wgpu-core/src/command/mod.rs

@@ -14,30 +14,17 @@ pub use self::render::*;
 pub use self::transfer::*;
 
 use crate::{
-    device::{
-        MAX_COLOR_TARGETS,
-        all_buffer_stages,
-        all_image_stages,
-    },
+    device::{all_buffer_stages, all_image_stages, MAX_COLOR_TARGETS},
     hub::{GfxBackend, Global, GlobalIdentityHandlerFactory, Storage, Token},
     id,
     resource::{Buffer, Texture},
     track::TrackerSet,
-    Features,
-    LifeGuard,
-    Stored,
+    Features, LifeGuard, Stored,
 };
 
 use peek_poke::PeekPoke;
 
-use std::{
-    marker::PhantomData,
-    mem,
-    ptr,
-    slice,
-    thread::ThreadId,
-};
-
+use std::{marker::PhantomData, mem, ptr, slice, thread::ThreadId};
 
 #[derive(Clone, Copy, Debug, PeekPoke)]
 struct PhantomSlice<T>(PhantomData<T>);
@@ -50,7 +37,10 @@ impl<T> Default for PhantomSlice<T> {
 
 impl<T> PhantomSlice<T> {
     unsafe fn decode_unaligned<'a>(
-        self, pointer: *const u8, count: usize, bound: *const u8
+        self,
+        pointer: *const u8,
+        count: usize,
+        bound: *const u8,
     ) -> (*const u8, &'a [T]) {
         let align_offset = pointer.align_offset(mem::align_of::<T>());
         let aligned = pointer.add(align_offset);
@@ -70,10 +60,7 @@ pub struct RawPass {
 }
 
 impl RawPass {
-    fn from_vec<T>(
-        mut vec: Vec<T>,
-        encoder_id: id::CommandEncoderId,
-    ) -> Self {
+    fn from_vec<T>(mut vec: Vec<T>, encoder_id: id::CommandEncoderId) -> Self {
         let ptr = vec.as_mut_ptr() as *mut u8;
         let capacity = vec.capacity() * mem::size_of::<T>();
         mem::forget(vec);
@@ -89,9 +76,7 @@ impl RawPass {
     ///
     /// The last command is provided, yet the encoder
     /// is guaranteed to have exactly `C::max_size()` space for it.
-    unsafe fn finish<C: peek_poke::Poke>(
-        &mut self, command: C
-    ) {
+    unsafe fn finish<C: peek_poke::Poke>(&mut self, command: C) {
         self.ensure_extra_size(C::max_size());
         let extended_end = self.data.add(C::max_size());
         let end = command.poke_into(self.data);
@@ -169,30 +154,26 @@ impl<B: GfxBackend> CommandBuffer<B> {
         debug_assert_eq!(B::VARIANT, base.backend());
         debug_assert_eq!(B::VARIANT, head.backend());
 
-        let buffer_barriers = base
-            .buffers
-            .merge_replace(&head.buffers)
-            .map(|pending| {
-                let buf = &buffer_guard[pending.id];
-                pending.into_hal(buf)
-            });
-        let texture_barriers = base
-            .textures
-            .merge_replace(&head.textures)
-            .map(|pending| {
-                let tex = &texture_guard[pending.id];
-                pending.into_hal(tex)
-            });
+        let buffer_barriers = base.buffers.merge_replace(&head.buffers).map(|pending| {
+            let buf = &buffer_guard[pending.id];
+            pending.into_hal(buf)
+        });
+        let texture_barriers = base.textures.merge_replace(&head.textures).map(|pending| {
+            let tex = &texture_guard[pending.id];
+            pending.into_hal(tex)
+        });
         base.views.merge_extend(&head.views).unwrap();
         base.bind_groups.merge_extend(&head.bind_groups).unwrap();
         base.samplers.merge_extend(&head.samplers).unwrap();
-        base.compute_pipes.merge_extend(&head.compute_pipes).unwrap();
+        base.compute_pipes
+            .merge_extend(&head.compute_pipes)
+            .unwrap();
         base.render_pipes.merge_extend(&head.render_pipes).unwrap();
 
         let stages = all_buffer_stages() | all_image_stages();
         unsafe {
             raw.pipeline_barrier(
-                stages .. stages,
+                stages..stages,
                 hal::memory::Dependencies::empty(),
                 buffer_barriers.chain(texture_barriers),
             );
@@ -258,7 +239,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         comb.is_recording = false;
         // stop tracking the swapchain image, if used
         if let Some((ref sc_id, _)) = comb.used_swap_chain {
-            let view_id = swap_chain_guard[sc_id.value].acquired_view_id
+            let view_id = swap_chain_guard[sc_id.value]
+                .acquired_view_id
                 .as_ref()
                 .expect("Used swap chain frame has already presented");
             comb.trackers.views.remove(view_id.value);

wgpu-core/src/command/render.rs

@@ -5,19 +5,12 @@
 use crate::{
     command::{
         bind::{Binder, LayoutChange},
-        PassComponent,
-        PhantomSlice,
-        RawRenderPassColorAttachmentDescriptor,
-        RawRenderPassDepthStencilAttachmentDescriptor,
-        RawRenderTargets,
+        PassComponent, PhantomSlice, RawRenderPassColorAttachmentDescriptor,
+        RawRenderPassDepthStencilAttachmentDescriptor, RawRenderTargets,
     },
     conv,
     device::{
-        FramebufferKey,
-        RenderPassContext,
-        RenderPassKey,
-        MAX_VERTEX_BUFFERS,
-        MAX_COLOR_TARGETS,
+        FramebufferKey, RenderPassContext, RenderPassKey, MAX_COLOR_TARGETS, MAX_VERTEX_BUFFERS,
     },
     hub::{GfxBackend, Global, GlobalIdentityHandlerFactory, Token},
     id,
@@ -27,31 +20,17 @@ use crate::{
     Stored,
 };
 
-use wgt::{
-    BufferAddress,
-    BufferUsage,
-    Color,
-    DynamicOffset,
-    IndexFormat,
-    InputStepMode,
-    LoadOp,
-    RenderPassColorAttachmentDescriptorBase,
-    RenderPassDepthStencilAttachmentDescriptorBase,
-    TextureUsage,
-    BIND_BUFFER_ALIGNMENT
-};
 use arrayvec::ArrayVec;
 use hal::command::CommandBuffer as _;
 use peek_poke::{Peek, PeekPoke, Poke};
+use wgt::{
+    BufferAddress, BufferUsage, Color, DynamicOffset, IndexFormat, InputStepMode, LoadOp,
+    RenderPassColorAttachmentDescriptorBase, RenderPassDepthStencilAttachmentDescriptorBase,
+    TextureUsage, BIND_BUFFER_ALIGNMENT,
+};
 
 use std::{
-    borrow::Borrow,
-    collections::hash_map::Entry,
-    iter,
-    marker::PhantomData,
-    mem,
-    ops::Range,
-    slice,
+    borrow::Borrow, collections::hash_map::Entry, iter, marker::PhantomData, mem, ops::Range, slice,
 };
 
 pub type RenderPassColorAttachmentDescriptor =
@@ -156,10 +135,10 @@ impl super::RawPass {
             };
         }
 
-        for (color, at) in targets.colors
-            .iter_mut()
-            .zip(slice::from_raw_parts(desc.color_attachments, desc.color_attachments_length))
-        {
+        for (color, at) in targets.colors.iter_mut().zip(slice::from_raw_parts(
+            desc.color_attachments,
+            desc.color_attachments_length,
+        )) {
             *color = RawRenderPassColorAttachmentDescriptor {
                 attachment: at.attachment.into_raw(),
                 resolve_target: at.resolve_target.map_or(0, |id| id.into_raw()),
@@ -335,25 +314,22 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let (view_guard, _) = hub.texture_views.read(&mut token);
 
         let mut peeker = raw_data.as_ptr();
-        let raw_data_end = unsafe {
-            raw_data.as_ptr().add(raw_data.len())
-        };
+        let raw_data_end = unsafe { raw_data.as_ptr().add(raw_data.len()) };
 
         let mut targets: RawRenderTargets = unsafe { mem::zeroed() };
         assert!(unsafe { peeker.add(RawRenderTargets::max_size()) <= raw_data_end });
         peeker = unsafe { RawRenderTargets::peek_from(peeker, &mut targets) };
 
-        let color_attachments = targets.colors
+        let color_attachments = targets
+            .colors
             .iter()
             .take_while(|at| at.attachment != 0)
-            .map(|at| {
-                RenderPassColorAttachmentDescriptor {
-                    attachment: id::TextureViewId::from_raw(at.attachment).unwrap(),
-                    resolve_target: id::TextureViewId::from_raw(at.resolve_target),
-                    load_op: at.component.load_op,
-                    store_op: at.component.store_op,
-                    clear_color: at.component.clear_value,
-                }
+            .map(|at| RenderPassColorAttachmentDescriptor {
+                attachment: id::TextureViewId::from_raw(at.attachment).unwrap(),
+                resolve_target: id::TextureViewId::from_raw(at.resolve_target),
+                load_op: at.component.load_op,
+                store_op: at.component.store_op,
+                clear_color: at.component.clear_value,
             })
             .collect::<ArrayVec<[_; MAX_COLOR_TARGETS]>>();
         let depth_stencil_attachment_body;
@@ -401,7 +377,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 &'a hal::image::SubresourceRange,
                 Option<TextureUsage>,
             );
-            let mut output_attachments = ArrayVec::<[OutputAttachment; MAX_TOTAL_ATTACHMENTS]>::new();
+            let mut output_attachments =
+                ArrayVec::<[OutputAttachment; MAX_TOTAL_ATTACHMENTS]>::new();
 
             log::trace!(
                 "Encoding render pass begin in command buffer {:?}",
@@ -427,17 +404,19 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         };
 
                         // Using render pass for transition.
-                        let consistent_usage = base_trackers.textures.query(
-                            source_id.value,
-                            view.range.clone(),
-                        );
+                        let consistent_usage = base_trackers
+                            .textures
+                            .query(source_id.value, view.range.clone());
                         output_attachments.push((source_id, &view.range, consistent_usage));
 
                         let old_layout = match consistent_usage {
-                            Some(usage) => conv::map_texture_state(
-                                usage,
-                                hal::format::Aspects::DEPTH | hal::format::Aspects::STENCIL,
-                            ).1,
+                            Some(usage) => {
+                                conv::map_texture_state(
+                                    usage,
+                                    hal::format::Aspects::DEPTH | hal::format::Aspects::STENCIL,
+                                )
+                                .1
+                            }
                             None => hal::image::Layout::DepthStencilAttachmentOptimal,
                         };
 
@@ -449,7 +428,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                                 at.stencil_load_op,
                                 at.stencil_store_op,
                             ),
-                            layouts: old_layout .. hal::image::Layout::DepthStencilAttachmentOptimal,
+                            layouts: old_layout..hal::image::Layout::DepthStencilAttachmentOptimal,
                         })
                     }
                     None => None,
@@ -469,25 +448,25 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         view.samples, sample_count,
                         "All attachments must have the same sample_count"
                     );
-                    let first_use = trackers.views.init(
-                        at.attachment,
-                        view.life_guard.add_ref(),
-                        PhantomData,
-                    ).is_ok();
+                    let first_use = trackers
+                        .views
+                        .init(at.attachment, view.life_guard.add_ref(), PhantomData)
+                        .is_ok();
 
                     let layouts = match view.inner {
                         TextureViewInner::Native { ref source_id, .. } => {
-                            let consistent_usage = base_trackers.textures.query(
-                                source_id.value,
-                                view.range.clone(),
-                            );
+                            let consistent_usage = base_trackers
+                                .textures
+                                .query(source_id.value, view.range.clone());
                             output_attachments.push((source_id, &view.range, consistent_usage));
 
                             let old_layout = match consistent_usage {
-                                Some(usage) => conv::map_texture_state(usage, hal::format::Aspects::COLOR).1,
+                                Some(usage) => {
+                                    conv::map_texture_state(usage, hal::format::Aspects::COLOR).1
+                                }
                                 None => hal::image::Layout::ColorAttachmentOptimal,
                             };
-                            old_layout .. hal::image::Layout::ColorAttachmentOptimal
+                            old_layout..hal::image::Layout::ColorAttachmentOptimal
                         }
                         TextureViewInner::SwapChain { ref source_id, .. } => {
                             if let Some((ref sc_id, _)) = cmb.used_swap_chain {
@@ -503,7 +482,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                             } else {
                                 end
                             };
-                            start .. end
+                            start..end
                         }
                     };
 
@@ -516,35 +495,32 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     });
                 }
 
-                for resolve_target in color_attachments
-                    .iter()
-                    .flat_map(|at| at.resolve_target)
-                {
+                for resolve_target in color_attachments.iter().flat_map(|at| at.resolve_target) {
                     let view = &view_guard[resolve_target];
                     assert_eq!(extent, Some(view.extent));
                     assert_eq!(
                         view.samples, 1,
                         "All resolve_targets must have a sample_count of 1"
                     );
-                    let first_use = trackers.views.init(
-                        resolve_target,
-                        view.life_guard.add_ref(),
-                        PhantomData,
-                    ).is_ok();
+                    let first_use = trackers
+                        .views
+                        .init(resolve_target, view.life_guard.add_ref(), PhantomData)
+                        .is_ok();
 
                     let layouts = match view.inner {
                         TextureViewInner::Native { ref source_id, .. } => {
-                            let consistent_usage = base_trackers.textures.query(
-                                source_id.value,
-                                view.range.clone(),
-                            );
+                            let consistent_usage = base_trackers
+                                .textures
+                                .query(source_id.value, view.range.clone());
                             output_attachments.push((source_id, &view.range, consistent_usage));
 
                             let old_layout = match consistent_usage {
-                                Some(usage) => conv::map_texture_state(usage, hal::format::Aspects::COLOR).1,
+                                Some(usage) => {
+                                    conv::map_texture_state(usage, hal::format::Aspects::COLOR).1
+                                }
                                 None => hal::image::Layout::ColorAttachmentOptimal,
                             };
-                            old_layout .. hal::image::Layout::ColorAttachmentOptimal
+                            old_layout..hal::image::Layout::ColorAttachmentOptimal
                         }
                         TextureViewInner::SwapChain { ref source_id, .. } => {
                             if let Some((ref sc_id, _)) = cmb.used_swap_chain {
@@ -560,7 +536,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                             } else {
                                 end
                             };
-                            start .. end
+                            start..end
                         }
                     };
 
@@ -650,7 +626,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     );
 
                     let subpass = hal::pass::SubpassDesc {
-                        colors: &color_ids[.. color_attachments.len()],
+                        colors: &color_ids[..color_attachments.len()],
                         resolves: &resolve_ids,
                         depth_stencil: depth_stencil_attachment.map(|_| &depth_id),
                         inputs: &[],
@@ -791,7 +767,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     0,
                     iter::once(hal::pso::Viewport {
                         rect,
-                        depth: 0.0 .. 1.0,
+                        depth: 0.0..1.0,
                     }),
                 );
             }
@@ -838,9 +814,18 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             assert!(unsafe { peeker.add(RenderCommand::max_size()) } <= raw_data_end);
             peeker = unsafe { RenderCommand::peek_from(peeker, &mut command) };
             match command {
-                RenderCommand::SetBindGroup { index, num_dynamic_offsets, bind_group_id, phantom_offsets } => {
+                RenderCommand::SetBindGroup {
+                    index,
+                    num_dynamic_offsets,
+                    bind_group_id,
+                    phantom_offsets,
+                } => {
                     let (new_peeker, offsets) = unsafe {
-                        phantom_offsets.decode_unaligned(peeker, num_dynamic_offsets as usize, raw_data_end)
+                        phantom_offsets.decode_unaligned(
+                            peeker,
+                            num_dynamic_offsets as usize,
+                            raw_data_end,
+                        )
                     };
                     peeker = new_peeker;
 
@@ -864,11 +849,17 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
                     trackers.merge_extend(&bind_group.used);
 
-                    if let Some((pipeline_layout_id, follow_ups)) = state.binder
-                        .provide_entry(index as usize, bind_group_id, bind_group, offsets)
-                    {
-                        let bind_groups = iter::once(bind_group.raw.raw())
-                            .chain(follow_ups.clone().map(|(bg_id, _)| bind_group_guard[bg_id].raw.raw()));
+                    if let Some((pipeline_layout_id, follow_ups)) = state.binder.provide_entry(
+                        index as usize,
+                        bind_group_id,
+                        bind_group,
+                        offsets,
+                    ) {
+                        let bind_groups = iter::once(bind_group.raw.raw()).chain(
+                            follow_ups
+                                .clone()
+                                .map(|(bg_id, _)| bind_group_guard[bg_id].raw.raw()),
+                        );
                         unsafe {
                             raw.bind_graphics_descriptor_sets(
                                 &&pipeline_layout_guard[pipeline_layout_id].raw,
@@ -877,7 +868,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                                 offsets
                                     .iter()
                                     .chain(follow_ups.flat_map(|(_, offsets)| offsets))
-                                    .cloned()
+                                    .cloned(),
                             );
                         }
                     };
@@ -898,9 +889,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         "The render pipeline and renderpass have mismatching sample_count"
                     );
 
-                    state.blend_color
+                    state
+                        .blend_color
                         .require(pipeline.flags.contains(PipelineFlags::BLEND_COLOR));
-                    state.stencil_reference
+                    state
+                        .stencil_reference
                         .require(pipeline.flags.contains(PipelineFlags::STENCIL_REFERENCE));
 
                     unsafe {
@@ -911,7 +904,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     if state.binder.pipeline_layout_id != Some(pipeline.layout_id) {
                         let pipeline_layout = &pipeline_layout_guard[pipeline.layout_id];
                         state.binder.pipeline_layout_id = Some(pipeline.layout_id);
-                        state.binder
+                        state
+                            .binder
                             .reset_expectations(pipeline_layout.bind_group_layout_ids.len());
                         let mut is_compatible = true;
 
@@ -968,30 +962,35 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         }
                     }
                     // Update vertex buffer limits
-                    for (vbs, &(stride, rate)) in state
-                        .vertex
-                        .inputs
-                        .iter_mut()
-                        .zip(&pipeline.vertex_strides)
+                    for (vbs, &(stride, rate)) in
+                        state.vertex.inputs.iter_mut().zip(&pipeline.vertex_strides)
                     {
                         vbs.stride = stride;
                         vbs.rate = rate;
                     }
-                    for vbs in state.vertex.inputs[pipeline.vertex_strides.len() ..].iter_mut() {
+                    for vbs in state.vertex.inputs[pipeline.vertex_strides.len()..].iter_mut() {
                         vbs.stride = 0;
                         vbs.rate = InputStepMode::Vertex;
                     }
                     state.vertex.update_limits();
                 }
-                RenderCommand::SetIndexBuffer { buffer_id, offset, size } => {
+                RenderCommand::SetIndexBuffer {
+                    buffer_id,
+                    offset,
+                    size,
+                } => {
                     let buffer = trackers
                         .buffers
                         .use_extend(&*buffer_guard, buffer_id, (), BufferUsage::INDEX)
                         .unwrap();
                     assert!(buffer.usage.contains(BufferUsage::INDEX));
 
-                    let end = if size != 0 { offset + size } else { buffer.size };
-                    state.index.bound_buffer_view = Some((buffer_id, offset .. end));
+                    let end = if size != 0 {
+                        offset + size
+                    } else {
+                        buffer.size
+                    };
+                    state.index.bound_buffer_view = Some((buffer_id, offset..end));
                     state.index.update_limit();
 
                     let view = hal::buffer::IndexBufferView {
@@ -1007,7 +1006,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         raw.bind_index_buffer(view);
                     }
                 }
-                RenderCommand::SetVertexBuffer { slot, buffer_id, offset, size } => {
+                RenderCommand::SetVertexBuffer {
+                    slot,
+                    buffer_id,
+                    offset,
+                    size,
+                } => {
                     let buffer = trackers
                         .buffers
                         .use_extend(&*buffer_guard, buffer_id, (), BufferUsage::VERTEX)
@@ -1040,7 +1044,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         raw.set_stencil_reference(hal::pso::Face::all(), value);
                     }
                 }
-                RenderCommand::SetViewport { ref rect, depth_min, depth_max } => {
+                RenderCommand::SetViewport {
+                    ref rect,
+                    depth_min,
+                    depth_max,
+                } => {
                     use std::{convert::TryFrom, i16};
                     let r = hal::pso::Rect {
                         x: i16::try_from(rect.x.round() as i64).unwrap_or(0),
@@ -1053,7 +1061,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                             0,
                             iter::once(hal::pso::Viewport {
                                 rect: r,
-                                depth: depth_min .. depth_max,
+                                depth: depth_min..depth_max,
                             }),
                         );
                     }
@@ -1067,13 +1075,15 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         h: i16::try_from(rect.h).unwrap_or(i16::MAX),
                     };
                     unsafe {
-                        raw.set_scissors(
-                            0,
-                            iter::once(r),
-                        );
+                        raw.set_scissors(0, iter::once(r));
                     }
                 }
-                RenderCommand::Draw { vertex_count, instance_count, first_vertex, first_instance } => {
+                RenderCommand::Draw {
+                    vertex_count,
+                    instance_count,
+                    first_vertex,
+                    first_instance,
+                } => {
                     state.is_ready().unwrap();
                     assert!(
                         first_vertex + vertex_count <= state.vertex.vertex_limit,
@@ -1086,12 +1096,18 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
                     unsafe {
                         raw.draw(
-                            first_vertex .. first_vertex + vertex_count,
-                            first_instance .. first_instance + instance_count,
+                            first_vertex..first_vertex + vertex_count,
+                            first_instance..first_instance + instance_count,
                         );
                     }
                 }
-                RenderCommand::DrawIndexed { index_count, instance_count, first_index, base_vertex, first_instance } => {
+                RenderCommand::DrawIndexed {
+                    index_count,
+                    instance_count,
+                    first_index,
+                    base_vertex,
+                    first_instance,
+                } => {
                     state.is_ready().unwrap();
 
                     //TODO: validate that base_vertex + max_index() is within the provided range
@@ -1106,9 +1122,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
                     unsafe {
                         raw.draw_indexed(
-                            first_index .. first_index + index_count,
+                            first_index..first_index + index_count,
                             base_vertex,
-                            first_instance .. first_instance + instance_count,
+                            first_instance..first_instance + instance_count,
                         );
                     }
                 }
@@ -1117,12 +1133,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
                     let buffer = trackers
                         .buffers
-                        .use_extend(
-                            &*buffer_guard,
-                            buffer_id,
-                            (),
-                            BufferUsage::INDIRECT,
-                        )
+                        .use_extend(&*buffer_guard, buffer_id, (), BufferUsage::INDIRECT)
                         .unwrap();
                     assert!(buffer.usage.contains(BufferUsage::INDIRECT));
 
@@ -1135,12 +1146,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
                     let buffer = trackers
                         .buffers
-                        .use_extend(
-                            &*buffer_guard,
-                            buffer_id,
-                            (),
-                            BufferUsage::INDIRECT,
-                        )
+                        .use_extend(&*buffer_guard, buffer_id, (), BufferUsage::INDIRECT)
                         .unwrap();
                     assert!(buffer.usage.contains(BufferUsage::INDIRECT));
 
@@ -1169,15 +1175,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
 pub mod render_ffi {
     use super::{
-        RenderCommand,
         super::{PhantomSlice, RawPass, Rect},
+        RenderCommand,
     };
-    use crate::{
-        id,
-        RawString,
-    };
-    use wgt::{BufferAddress, Color, DynamicOffset};
+    use crate::{id, RawString};
     use std::{convert::TryInto, slice};
+    use wgt::{BufferAddress, Color, DynamicOffset};
 
     /// # Safety
     ///
@@ -1199,9 +1202,7 @@ pub mod render_ffi {
             bind_group_id,
             phantom_offsets: PhantomSlice::default(),
         });
-        pass.encode_slice(
-            slice::from_raw_parts(offsets, offset_length),
-        );
+        pass.encode_slice(slice::from_raw_parts(offsets, offset_length));
     }
 
     #[no_mangle]
@@ -1243,10 +1244,7 @@ pub mod render_ffi {
     }
 
     #[no_mangle]
-    pub unsafe extern "C" fn wgpu_render_pass_set_blend_color(
-        pass: &mut RawPass,
-        color: &Color,
-    ) {
+    pub unsafe extern "C" fn wgpu_render_pass_set_blend_color(pass: &mut RawPass, color: &Color) {
         pass.encode(&RenderCommand::SetBlendColor(*color));
     }
 
@@ -1326,10 +1324,7 @@ pub mod render_ffi {
         buffer_id: id::BufferId,
         offset: BufferAddress,
     ) {
-        pass.encode(&RenderCommand::DrawIndirect {
-            buffer_id,
-            offset,
-        });
+        pass.encode(&RenderCommand::DrawIndirect { buffer_id, offset });
     }
 
     #[no_mangle]
@@ -1338,10 +1333,7 @@ pub mod render_ffi {
         buffer_id: id::BufferId,
         offset: BufferAddress,
     ) {
-        pass.encode(&RenderCommand::DrawIndexedIndirect {
-            buffer_id,
-            offset,
-        });
+        pass.encode(&RenderCommand::DrawIndexedIndirect { buffer_id, offset });
     }
 
     #[no_mangle]
@@ -1354,25 +1346,17 @@ pub mod render_ffi {
     }
 
     #[no_mangle]
-    pub extern "C" fn wgpu_render_pass_push_debug_group(
-        _pass: &mut RawPass,
-        _label: RawString,
-    ) {
+    pub extern "C" fn wgpu_render_pass_push_debug_group(_pass: &mut RawPass, _label: RawString) {
         //TODO
     }
 
     #[no_mangle]
-    pub extern "C" fn wgpu_render_pass_pop_debug_group(
-        _pass: &mut RawPass,
-    ) {
+    pub extern "C" fn wgpu_render_pass_pop_debug_group(_pass: &mut RawPass) {
         //TODO
     }
 
     #[no_mangle]
-    pub extern "C" fn wgpu_render_pass_insert_debug_marker(
-        _pass: &mut RawPass,
-        _label: RawString,
-    ) {
+    pub extern "C" fn wgpu_render_pass_insert_debug_marker(_pass: &mut RawPass, _label: RawString) {
         //TODO
     }
 

wgpu-core/src/command/transfer.rs

@@ -9,8 +9,8 @@ use crate::{
     id::{BufferId, CommandEncoderId, TextureId},
 };
 
-use wgt::{BufferAddress, BufferUsage, Extent3d, Origin3d, TextureUsage};
 use hal::command::CommandBuffer as _;
+use wgt::{BufferAddress, BufferUsage, Extent3d, Origin3d, TextureUsage};
 
 use std::iter;
 
@@ -47,8 +47,8 @@ impl TextureCopyView {
         {
             hal::image::SubresourceRange {
                 aspects,
-                levels: level .. level + 1,
-                layers: layer .. layer + 1,
+                levels: level..level + 1,
+                layers: layer..layer + 1,
             }
         }
     }
@@ -63,7 +63,7 @@ impl TextureCopyView {
             hal::image::SubresourceLayers {
                 aspects,
                 level: self.mip_level as hal::image::Level,
-                layers: layer .. layer + 1,
+                layers: layer..layer + 1,
             }
         }
     }
@@ -113,7 +113,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let cmb_raw = cmb.raw.last_mut().unwrap();
         unsafe {
             cmb_raw.pipeline_barrier(
-                all_buffer_stages() .. all_buffer_stages(),
+                all_buffer_stages()..all_buffer_stages(),
                 hal::memory::Dependencies::empty(),
                 barriers,
             );
@@ -172,7 +172,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let stages = all_buffer_stages() | all_image_stages();
         unsafe {
             cmb_raw.pipeline_barrier(
-                stages .. stages,
+                stages..stages,
                 hal::memory::Dependencies::empty(),
                 src_barriers.chain(dst_barriers),
             );
@@ -236,7 +236,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let stages = all_buffer_stages() | all_image_stages();
         unsafe {
             cmb_raw.pipeline_barrier(
-                stages .. stages,
+                stages..stages,
                 hal::memory::Dependencies::empty(),
                 src_barriers.chain(dst_barrier),
             );
@@ -297,7 +297,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let cmb_raw = cmb.raw.last_mut().unwrap();
         unsafe {
             cmb_raw.pipeline_barrier(
-                all_image_stages() .. all_image_stages(),
+                all_image_stages()..all_image_stages(),
                 hal::memory::Dependencies::empty(),
                 barriers,
             );

wgpu-core/src/conv.rs

@@ -4,32 +4,16 @@
 
 use crate::{binding_model, Features};
 use wgt::{
-    BlendDescriptor,
-    BlendFactor,
-    Color,
-    ColorStateDescriptor,
-    ColorWrite,
-    CompareFunction,
-    CullMode,
-    DepthStencilStateDescriptor,
-    Extent3d,
-    FrontFace,
-    IndexFormat,
-    Origin3d,
-    PrimitiveTopology,
-    RasterizationStateDescriptor,
-    StencilOperation,
-    StencilStateFaceDescriptor,
-    TextureFormat,
-    VertexFormat,
+    BlendDescriptor, BlendFactor, Color, ColorStateDescriptor, ColorWrite, CompareFunction,
+    CullMode, DepthStencilStateDescriptor, Extent3d, FrontFace, IndexFormat, Origin3d,
+    PrimitiveTopology, RasterizationStateDescriptor, StencilOperation, StencilStateFaceDescriptor,
+    TextureFormat, VertexFormat,
 };
 
-pub fn map_buffer_usage(
-    usage: wgt::BufferUsage,
-) -> (hal::buffer::Usage, hal::memory::Properties) {
-    use wgt::BufferUsage as W;
+pub fn map_buffer_usage(usage: wgt::BufferUsage) -> (hal::buffer::Usage, hal::memory::Properties) {
     use hal::buffer::Usage as U;
     use hal::memory::Properties as P;
+    use wgt::BufferUsage as W;
 
     let mut hal_memory = P::empty();
     if usage.contains(W::MAP_READ) {
@@ -69,8 +53,8 @@ pub fn map_texture_usage(
     usage: wgt::TextureUsage,
     aspects: hal::format::Aspects,
 ) -> hal::image::Usage {
-    use wgt::TextureUsage as W;
     use hal::image::Usage as U;
+    use wgt::TextureUsage as W;
 
     let mut value = U::empty();
     if usage.contains(W::COPY_SRC) {
@@ -97,73 +81,46 @@ pub fn map_texture_usage(
     value
 }
 
-pub fn map_binding_type(
-    binding: &binding_model::BindGroupLayoutEntry,
-) -> hal::pso::DescriptorType {
+pub fn map_binding_type(binding: &binding_model::BindGroupLayoutEntry) -> hal::pso::DescriptorType {
     use crate::binding_model::BindingType as Bt;
     use hal::pso;
     match binding.ty {
-        Bt::UniformBuffer => {
-            pso::DescriptorType::Buffer {
-                ty: pso::BufferDescriptorType::Uniform,
-                format: pso::BufferDescriptorFormat::Structured {
-                    dynamic_offset: binding.has_dynamic_offset,
-                },
-            }
-        }
-        Bt::StorageBuffer => {
-            pso::DescriptorType::Buffer {
-                ty: pso::BufferDescriptorType::Storage {
-                    read_only: false,
-                },
-                format: pso::BufferDescriptorFormat::Structured {
-                    dynamic_offset: binding.has_dynamic_offset,
-                },
-            }
-        }
-        Bt::ReadonlyStorageBuffer => {
-            pso::DescriptorType::Buffer {
-                ty: pso::BufferDescriptorType::Storage {
-                    read_only: false,
-                },
-                format: pso::BufferDescriptorFormat::Structured {
-                    dynamic_offset: binding.has_dynamic_offset,
-                },
-            }
-        }
-        Bt::Sampler |
-        Bt::ComparisonSampler => {
-            pso::DescriptorType::Sampler
-        }
-        Bt::SampledTexture => {
-            pso::DescriptorType::Image {
-                ty: pso::ImageDescriptorType::Sampled {
-                    with_sampler: false,
-                },
-            }
-        }
-        Bt::ReadonlyStorageTexture => {
-            pso::DescriptorType::Image {
-                ty: pso::ImageDescriptorType::Storage {
-                    read_only: false,
-                },
-            }
-        }
-        Bt::WriteonlyStorageTexture => {
-            pso::DescriptorType::Image {
-                ty: pso::ImageDescriptorType::Storage {
-                    read_only: true,
-                },
-            }
-        }
+        Bt::UniformBuffer => pso::DescriptorType::Buffer {
+            ty: pso::BufferDescriptorType::Uniform,
+            format: pso::BufferDescriptorFormat::Structured {
+                dynamic_offset: binding.has_dynamic_offset,
+            },
+        },
+        Bt::StorageBuffer => pso::DescriptorType::Buffer {
+            ty: pso::BufferDescriptorType::Storage { read_only: false },
+            format: pso::BufferDescriptorFormat::Structured {
+                dynamic_offset: binding.has_dynamic_offset,
+            },
+        },
+        Bt::ReadonlyStorageBuffer => pso::DescriptorType::Buffer {
+            ty: pso::BufferDescriptorType::Storage { read_only: false },
+            format: pso::BufferDescriptorFormat::Structured {
+                dynamic_offset: binding.has_dynamic_offset,
+            },
+        },
+        Bt::Sampler | Bt::ComparisonSampler => pso::DescriptorType::Sampler,
+        Bt::SampledTexture => pso::DescriptorType::Image {
+            ty: pso::ImageDescriptorType::Sampled {
+                with_sampler: false,
+            },
+        },
+        Bt::ReadonlyStorageTexture => pso::DescriptorType::Image {
+            ty: pso::ImageDescriptorType::Storage { read_only: false },
+        },
+        Bt::WriteonlyStorageTexture => pso::DescriptorType::Image {
+            ty: pso::ImageDescriptorType::Storage { read_only: true },
+        },
     }
 }
 
-pub fn map_shader_stage_flags(
-    shader_stage_flags: wgt::ShaderStage,
-) -> hal::pso::ShaderStageFlags {
-    use wgt::ShaderStage as Ss;
+pub fn map_shader_stage_flags(shader_stage_flags: wgt::ShaderStage) -> hal::pso::ShaderStageFlags {
     use hal::pso::ShaderStageFlags as H;
+    use wgt::ShaderStage as Ss;
 
     let mut value = H::empty();
     if shader_stage_flags.contains(Ss::VERTEX) {
@@ -194,11 +151,9 @@ pub fn map_extent(extent: Extent3d) -> hal::image::Extent {
     }
 }
 
-pub fn map_primitive_topology(
-    primitive_topology: PrimitiveTopology,
-) -> hal::pso::Primitive {
-    use wgt::PrimitiveTopology as Pt;
+pub fn map_primitive_topology(primitive_topology: PrimitiveTopology) -> hal::pso::Primitive {
     use hal::pso::Primitive as H;
+    use wgt::PrimitiveTopology as Pt;
     match primitive_topology {
         Pt::PointList => H::PointList,
         Pt::LineList => H::LineList,
@@ -208,9 +163,7 @@ pub fn map_primitive_topology(
     }
 }
 
-pub fn map_color_state_descriptor(
-    desc: &ColorStateDescriptor,
-) -> hal::pso::ColorBlendDesc {
+pub fn map_color_state_descriptor(desc: &ColorStateDescriptor) -> hal::pso::ColorBlendDesc {
     let color_mask = desc.write_mask;
     let blend_state = if desc.color_blend != BlendDescriptor::REPLACE
         || desc.alpha_blend != BlendDescriptor::REPLACE
@@ -229,8 +182,8 @@ pub fn map_color_state_descriptor(
 }
 
 fn map_color_write_flags(flags: ColorWrite) -> hal::pso::ColorMask {
-    use wgt::ColorWrite as Cw;
     use hal::pso::ColorMask as H;
+    use wgt::ColorWrite as Cw;
 
     let mut value = H::empty();
     if flags.contains(Cw::RED) {
@@ -249,8 +202,8 @@ fn map_color_write_flags(flags: ColorWrite) -> hal::pso::ColorMask {
 }
 
 fn map_blend_descriptor(blend_desc: &BlendDescriptor) -> hal::pso::BlendOp {
-    use wgt::BlendOperation as Bo;
     use hal::pso::BlendOp as H;
+    use wgt::BlendOperation as Bo;
     match blend_desc.operation {
         Bo::Add => H::Add {
             src: map_blend_factor(blend_desc.src_factor),
@@ -270,8 +223,8 @@ fn map_blend_descriptor(blend_desc: &BlendDescriptor) -> hal::pso::BlendOp {
 }
 
 fn map_blend_factor(blend_factor: BlendFactor) -> hal::pso::Factor {
-    use wgt::BlendFactor as Bf;
     use hal::pso::Factor as H;
+    use wgt::BlendFactor as Bf;
     match blend_factor {
         Bf::Zero => H::Zero,
         Bf::One => H::One,
@@ -293,11 +246,10 @@ pub fn map_depth_stencil_state_descriptor(
     desc: &DepthStencilStateDescriptor,
 ) -> hal::pso::DepthStencilDesc {
     hal::pso::DepthStencilDesc {
-        depth: if desc.depth_write_enabled
-            || desc.depth_compare != CompareFunction::Always
-        {
+        depth: if desc.depth_write_enabled || desc.depth_compare != CompareFunction::Always {
             Some(hal::pso::DepthTest {
-                fun: map_compare_function(desc.depth_compare).expect("DepthStencilStateDescriptor has undefined compare function"),
+                fun: map_compare_function(desc.depth_compare)
+                    .expect("DepthStencilStateDescriptor has undefined compare function"),
                 write: desc.depth_write_enabled,
             })
         } else {
@@ -328,11 +280,10 @@ pub fn map_depth_stencil_state_descriptor(
     }
 }
 
-fn map_stencil_face(
-    stencil_state_face_desc: &StencilStateFaceDescriptor,
-) -> hal::pso::StencilFace {
+fn map_stencil_face(stencil_state_face_desc: &StencilStateFaceDescriptor) -> hal::pso::StencilFace {
     hal::pso::StencilFace {
-        fun: map_compare_function(stencil_state_face_desc.compare).expect("StencilStateFaceDescriptor has undefined compare function"),
+        fun: map_compare_function(stencil_state_face_desc.compare)
+            .expect("StencilStateFaceDescriptor has undefined compare function"),
         op_fail: map_stencil_operation(stencil_state_face_desc.fail_op),
         op_depth_fail: map_stencil_operation(stencil_state_face_desc.depth_fail_op),
         op_pass: map_stencil_operation(stencil_state_face_desc.pass_op),
@@ -340,8 +291,8 @@ fn map_stencil_face(
 }
 
 pub fn map_compare_function(compare_function: CompareFunction) -> Option<hal::pso::Comparison> {
-    use wgt::CompareFunction as Cf;
     use hal::pso::Comparison as H;
+    use wgt::CompareFunction as Cf;
     match compare_function {
         Cf::Undefined => None,
         Cf::Never => Some(H::Never),
@@ -356,8 +307,8 @@ pub fn map_compare_function(compare_function: CompareFunction) -> Option<hal::ps
 }
 
 fn map_stencil_operation(stencil_operation: StencilOperation) -> hal::pso::StencilOp {
-    use wgt::StencilOperation as So;
     use hal::pso::StencilOp as H;
+    use wgt::StencilOperation as So;
     match stencil_operation {
         So::Keep => H::Keep,
         So::Zero => H::Zero,
@@ -374,8 +325,8 @@ pub(crate) fn map_texture_format(
     texture_format: TextureFormat,
     features: Features,
 ) -> hal::format::Format {
-    use wgt::TextureFormat as Tf;
     use hal::format::Format as H;
+    use wgt::TextureFormat as Tf;
     match texture_format {
         // Normal 8 bit formats
         Tf::R8Unorm => H::R8Unorm,
@@ -444,8 +395,8 @@ pub(crate) fn map_texture_format(
 }
 
 pub fn map_vertex_format(vertex_format: VertexFormat) -> hal::format::Format {
-    use wgt::VertexFormat as Vf;
     use hal::format::Format as H;
+    use wgt::VertexFormat as Vf;
     match vertex_format {
         Vf::Uchar2 => H::Rg8Uint,
         Vf::Uchar4 => H::Rgba8Uint,
@@ -495,8 +446,8 @@ pub fn map_texture_dimension_size(
     array_size: u32,
     sample_size: u32,
 ) -> hal::image::Kind {
-    use wgt::TextureDimension::*;
     use hal::image::Kind as H;
+    use wgt::TextureDimension::*;
     match dimension {
         D1 => {
             assert_eq!(height, 1);
@@ -531,11 +482,9 @@ pub fn map_texture_dimension_size(
     }
 }
 
-pub fn map_texture_view_dimension(
-    dimension: wgt::TextureViewDimension,
-) -> hal::image::ViewKind {
-    use wgt::TextureViewDimension::*;
+pub fn map_texture_view_dimension(dimension: wgt::TextureViewDimension) -> hal::image::ViewKind {
     use hal::image::ViewKind as H;
+    use wgt::TextureViewDimension::*;
     match dimension {
         D1 => H::D1,
         D2 => H::D2,
@@ -547,8 +496,8 @@ pub fn map_texture_view_dimension(
 }
 
 pub fn map_buffer_state(usage: wgt::BufferUsage) -> hal::buffer::State {
-    use wgt::BufferUsage as W;
     use hal::buffer::Access as A;
+    use wgt::BufferUsage as W;
 
     let mut access = A::empty();
     if usage.contains(W::COPY_SRC) {
@@ -580,8 +529,8 @@ pub fn map_texture_state(
     usage: wgt::TextureUsage,
     aspects: hal::format::Aspects,
 ) -> hal::image::State {
-    use wgt::TextureUsage as W;
     use hal::image::{Access as A, Layout as L};
+    use wgt::TextureUsage as W;
 
     let is_color = aspects.contains(hal::format::Aspects::COLOR);
     let layout = match usage {
@@ -619,10 +568,7 @@ pub fn map_texture_state(
     (access, layout)
 }
 
-pub fn map_load_store_ops(
-    load: wgt::LoadOp,
-    store: wgt::StoreOp,
-) -> hal::pass::AttachmentOps {
+pub fn map_load_store_ops(load: wgt::LoadOp, store: wgt::StoreOp) -> hal::pass::AttachmentOps {
     hal::pass::AttachmentOps {
         load: match load {
             wgt::LoadOp::Clear => hal::pass::AttachmentLoadOp::Clear,
@@ -668,8 +614,8 @@ pub fn map_filter(filter: wgt::FilterMode) -> hal::image::Filter {
 }
 
 pub fn map_wrap(address: wgt::AddressMode) -> hal::image::WrapMode {
-    use wgt::AddressMode as Am;
     use hal::image::WrapMode as W;
+    use wgt::AddressMode as Am;
     match address {
         Am::ClampToEdge => W::Clamp,
         Am::Repeat => W::Tile,

wgpu-core/src/device/life.rs

@@ -4,25 +4,18 @@
 
 use crate::{
     hub::{GfxBackend, Global, GlobalIdentityHandlerFactory, Token},
-    id,
-    resource,
+    id, resource,
     track::TrackerSet,
-    FastHashMap,
-    Stored,
-    RefCount,
-    SubmissionIndex,
+    FastHashMap, RefCount, Stored, SubmissionIndex,
 };
 
 use copyless::VecHelper as _;
-use hal::device::Device as _;
-use parking_lot::Mutex;
 use gfx_descriptor::{DescriptorAllocator, DescriptorSet};
 use gfx_memory::{Heaps, MemoryBlock};
+use hal::device::Device as _;
+use parking_lot::Mutex;
 
-use std::{
-    sync::atomic::Ordering,
-};
-
+use std::sync::atomic::Ordering;
 
 const CLEANUP_WAIT_MS: u64 = 5000;
 
@@ -55,8 +48,10 @@ impl SuspectedResources {
         self.texture_views.extend_from_slice(&other.texture_views);
         self.samplers.extend_from_slice(&other.samplers);
         self.bind_groups.extend_from_slice(&other.bind_groups);
-        self.compute_pipelines.extend_from_slice(&other.compute_pipelines);
-        self.render_pipelines.extend_from_slice(&other.render_pipelines);
+        self.compute_pipelines
+            .extend_from_slice(&other.compute_pipelines);
+        self.render_pipelines
+            .extend_from_slice(&other.render_pipelines);
     }
 }
 
@@ -197,14 +192,12 @@ impl<B: hal::Backend> LifetimeTracker<B> {
         new_suspects: &SuspectedResources,
     ) {
         self.suspected_resources.extend(new_suspects);
-        self.active
-            .alloc()
-            .init(ActiveSubmission {
-                index,
-                fence,
-                last_resources: NonReferencedResources::new(),
-                mapped: Vec::new(),
-            });
+        self.active.alloc().init(ActiveSubmission {
+            index,
+            fence,
+            last_resources: NonReferencedResources::new(),
+            mapped: Vec::new(),
+        });
     }
 
     pub fn map(&mut self, buffer: id::BufferId, ref_count: RefCount) {
@@ -238,11 +231,7 @@ impl<B: hal::Backend> LifetimeTracker<B> {
     }
 
     /// Returns the last submission index that is done.
-    pub fn triage_submissions(
-        &mut self,
-        device: &B::Device,
-        force_wait: bool,
-    ) -> SubmissionIndex {
+    pub fn triage_submissions(&mut self, device: &B::Device, force_wait: bool) -> SubmissionIndex {
         if force_wait {
             self.wait_idle(device);
         }
@@ -259,7 +248,7 @@ impl<B: hal::Backend> LifetimeTracker<B> {
             return 0;
         };
 
-        for a in self.active.drain(.. done_count) {
+        for a in self.active.drain(..done_count) {
             log::trace!("Active submission {} is done", a.index);
             self.free_resources.extend(a.last_resources);
             self.ready_to_map.extend(a.mapped);
@@ -278,14 +267,9 @@ impl<B: hal::Backend> LifetimeTracker<B> {
         descriptor_allocator_mutex: &Mutex<DescriptorAllocator<B>>,
     ) {
         unsafe {
-            self.free_resources.clean(
-                device,
-                heaps_mutex,
-                descriptor_allocator_mutex,
-            );
-            descriptor_allocator_mutex
-                .lock()
-                .cleanup(device);
+            self.free_resources
+                .clean(device, heaps_mutex, descriptor_allocator_mutex);
+            descriptor_allocator_mutex.lock().cleanup(device);
         }
     }
 }
@@ -309,17 +293,26 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                     let res = guard.remove(id).unwrap();
 
                     assert!(res.used.bind_groups.is_empty());
-                    self.suspected_resources.buffers.extend(res.used.buffers.used());
-                    self.suspected_resources.textures.extend(res.used.textures.used());
-                    self.suspected_resources.texture_views.extend(res.used.views.used());
-                    self.suspected_resources.samplers.extend(res.used.samplers.used());
+                    self.suspected_resources
+                        .buffers
+                        .extend(res.used.buffers.used());
+                    self.suspected_resources
+                        .textures
+                        .extend(res.used.textures.used());
+                    self.suspected_resources
+                        .texture_views
+                        .extend(res.used.views.used());
+                    self.suspected_resources
+                        .samplers
+                        .extend(res.used.samplers.used());
 
                     let submit_index = res.life_guard.submission_index.load(Ordering::Acquire);
                     self.active
                         .iter_mut()
                         .find(|a| a.index == submit_index)
                         .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                        .desc_sets.push(res.raw);
+                        .desc_sets
+                        .push(res.raw);
                 }
             }
         }
@@ -346,7 +339,8 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                         .iter_mut()
                         .find(|a| a.index == submit_index)
                         .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                        .image_views.push((id, raw));
+                        .image_views
+                        .push((id, raw));
                 }
             }
         }
@@ -365,7 +359,8 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                         .iter_mut()
                         .find(|a| a.index == submit_index)
                         .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                        .images.push((res.raw, res.memory));
+                        .images
+                        .push((res.raw, res.memory));
                 }
             }
         }
@@ -384,7 +379,8 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                         .iter_mut()
                         .find(|a| a.index == submit_index)
                         .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                        .samplers.push(res.raw);
+                        .samplers
+                        .push(res.raw);
                 }
             }
         }
@@ -404,7 +400,8 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                         .iter_mut()
                         .find(|a| a.index == submit_index)
                         .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                        .buffers.push((res.raw, res.memory));
+                        .buffers
+                        .push((res.raw, res.memory));
                 }
             }
         }
@@ -423,7 +420,8 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                         .iter_mut()
                         .find(|a| a.index == submit_index)
                         .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                        .compute_pipes.push(res.raw);
+                        .compute_pipes
+                        .push(res.raw);
                 }
             }
         }
@@ -442,7 +440,8 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                         .iter_mut()
                         .find(|a| a.index == submit_index)
                         .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                        .graphics_pipes.push(res.raw);
+                        .graphics_pipes
+                        .push(res.raw);
                 }
             }
         }
@@ -517,7 +516,9 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                     // Between all attachments, we need the smallest index, because that's the last
                     // time this framebuffer is still valid
                     if let Some(attachment_last_submit) = attachment_last_submit {
-                        let min = last_submit.unwrap_or(std::usize::MAX).min(attachment_last_submit);
+                        let min = last_submit
+                            .unwrap_or(std::usize::MAX)
+                            .min(attachment_last_submit);
                         last_submit = Some(min);
                     }
                 }
@@ -537,7 +538,8 @@ impl<B: GfxBackend> LifetimeTracker<B> {
                 .iter_mut()
                 .find(|a| a.index == submit_index)
                 .map_or(&mut self.free_resources, |a| &mut a.last_resources)
-                .framebuffers.push(framebuffer);
+                .framebuffers
+                .push(framebuffer);
         }
     }
 
@@ -553,18 +555,25 @@ impl<B: GfxBackend> LifetimeTracker<B> {
         }
         let hub = B::hub(global);
         let (mut buffer_guard, _) = B::hub(global).buffers.write(token);
-        let mut pending_callbacks: Vec<super::BufferMapPendingCallback> = Vec::with_capacity(self.ready_to_map.len());
+        let mut pending_callbacks: Vec<super::BufferMapPendingCallback> =
+            Vec::with_capacity(self.ready_to_map.len());
         let mut trackers = trackers.lock();
         for buffer_id in self.ready_to_map.drain(..) {
             let buffer = &mut buffer_guard[buffer_id];
-            if buffer.life_guard.ref_count.is_none() && trackers.buffers.remove_abandoned(buffer_id) {
+            if buffer.life_guard.ref_count.is_none() && trackers.buffers.remove_abandoned(buffer_id)
+            {
                 buffer.map_state = resource::BufferMapState::Idle;
                 log::debug!("Mapping request is dropped because the buffer is destroyed.");
                 hub.buffers.free_id(buffer_id);
                 let buffer = buffer_guard.remove(buffer_id).unwrap();
-                self.free_resources.buffers.push((buffer.raw, buffer.memory));
+                self.free_resources
+                    .buffers
+                    .push((buffer.raw, buffer.memory));
             } else {
-                let mapping = match std::mem::replace(&mut buffer.map_state, resource::BufferMapState::Active) {
+                let mapping = match std::mem::replace(
+                    &mut buffer.map_state,
+                    resource::BufferMapState::Active,
+                ) {
                     resource::BufferMapState::Waiting(pending_mapping) => pending_mapping,
                     _ => panic!("No pending mapping."),
                 };

wgpu-core/src/device/mod.rs

@@ -3,22 +3,13 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use crate::{
-    binding_model,
-    command,
-    conv,
+    binding_model, command, conv,
     hub::{GfxBackend, Global, GlobalIdentityHandlerFactory, Input, Token},
-    id,
-    pipeline,
-    resource,
-    swap_chain,
+    id, pipeline, resource, swap_chain,
     track::{BufferState, TextureState, TrackerSet},
-    FastHashMap,
-    Features,
-    LifeGuard,
-    Stored,
+    FastHashMap, Features, LifeGuard, Stored,
 };
 
-use wgt::{BufferAddress, InputStepMode, TextureDimension, TextureFormat, BIND_BUFFER_ALIGNMENT};
 use arrayvec::ArrayVec;
 use copyless::VecHelper as _;
 use gfx_descriptor::DescriptorAllocator;
@@ -32,14 +23,10 @@ use hal::{
 };
 use parking_lot::{Mutex, MutexGuard};
 use smallvec::SmallVec;
+use wgt::{BufferAddress, InputStepMode, TextureDimension, TextureFormat, BIND_BUFFER_ALIGNMENT};
 
 use std::{
-    collections::hash_map::Entry,
-    ffi,
-    iter,
-    marker::PhantomData,
-    ptr,
-    slice,
+    collections::hash_map::Entry, ffi, iter, marker::PhantomData, ptr, slice,
     sync::atomic::Ordering,
 };
 
@@ -108,8 +95,11 @@ type RawBufferMut = *mut u8;
 type BufferMapResult = Result<RawBufferMut, hal::device::MapError>;
 type BufferMapPendingCallback = (resource::BufferMapOperation, BufferMapResult);
 
-pub type BufferMapReadCallback =
-    unsafe extern "C" fn(status: resource::BufferMapAsyncStatus, data: *const u8, userdata: *mut u8);
+pub type BufferMapReadCallback = unsafe extern "C" fn(
+    status: resource::BufferMapAsyncStatus,
+    data: *const u8,
+    userdata: *mut u8,
+);
 pub type BufferMapWriteCallback =
     unsafe extern "C" fn(status: resource::BufferMapAsyncStatus, data: *mut u8, userdata: *mut u8);
 
@@ -140,11 +130,8 @@ fn map_buffer<B: hal::Backend>(
         };
         match kind {
             HostMap::Read => unsafe {
-                raw.invalidate_mapped_memory_ranges(iter::once((
-                    buffer.memory.memory(),
-                    segment,
-                )))
-                .unwrap();
+                raw.invalidate_mapped_memory_ranges(iter::once((buffer.memory.memory(), segment)))
+                    .unwrap();
             },
             HostMap::Write => {
                 buffer.mapped_write_segments.push(segment);
@@ -154,28 +141,24 @@ fn map_buffer<B: hal::Backend>(
     Ok(ptr.as_ptr())
 }
 
-fn unmap_buffer<B: hal::Backend>(
-    raw: &B::Device,
-    buffer: &mut resource::Buffer<B>,
-) {
+fn unmap_buffer<B: hal::Backend>(raw: &B::Device, buffer: &mut resource::Buffer<B>) {
     match buffer.map_state {
         resource::BufferMapState::Idle => {
             log::error!("Buffer already unmapped");
             return;
-        },
+        }
         _ => buffer.map_state = resource::BufferMapState::Idle,
     }
 
     if !buffer.mapped_write_segments.is_empty() {
         unsafe {
-            raw
-                .flush_mapped_memory_ranges(
-                    buffer
-                        .mapped_write_segments
-                        .iter()
-                        .map(|r| (buffer.memory.memory(), r.clone())),
-                )
-                .unwrap()
+            raw.flush_mapped_memory_ranges(
+                buffer
+                    .mapped_write_segments
+                    .iter()
+                    .map(|r| (buffer.memory.memory(), r.clone())),
+            )
+            .unwrap()
         };
         buffer.mapped_write_segments.clear();
     }
@@ -195,15 +178,14 @@ fn fire_map_callbacks<I: IntoIterator<Item = BufferMapPendingCallback>>(callback
         match operation {
             resource::BufferMapOperation::Read { callback, userdata } => unsafe {
                 callback(status, ptr, userdata)
-            }
+            },
             resource::BufferMapOperation::Write { callback, userdata } => unsafe {
                 callback(status, ptr, userdata)
-            }
+            },
         }
     }
 }
 
-
 #[derive(Debug)]
 pub struct Device<B: hal::Backend> {
     pub(crate) raw: B::Device,
@@ -272,7 +254,8 @@ impl<B: GfxBackend> Device<B> {
     }
 
     fn lock_life<'a>(
-        &'a self, _token: &mut Token<'a, Self>
+        &'a self,
+        _token: &mut Token<'a, Self>,
     ) -> MutexGuard<'a, life::LifetimeTracker<B>> {
         self.life_tracker.lock()
     }
@@ -290,11 +273,7 @@ impl<B: GfxBackend> Device<B> {
         life_tracker.triage_framebuffers(global, &mut *self.framebuffers.lock(), token);
         let _last_done = life_tracker.triage_submissions(&self.raw, force_wait);
         let callbacks = life_tracker.handle_mapping(global, &self.raw, &self.trackers, token);
-        life_tracker.cleanup(
-            &self.raw,
-            &self.mem_allocator,
-            &self.desc_allocator,
-        );
+        life_tracker.cleanup(&self.raw, &self.mem_allocator, &self.desc_allocator);
         callbacks
     }
 
@@ -317,7 +296,12 @@ impl<B: GfxBackend> Device<B> {
             } else if (Bu::MAP_READ | Bu::COPY_DST).contains(desc.usage) {
                 (Kind::Linear, MemoryUsage::Staging { read_back: true })
             } else {
-                (Kind::General, MemoryUsage::Dynamic { sparse_updates: false })
+                (
+                    Kind::General,
+                    MemoryUsage::Dynamic {
+                        sparse_updates: false,
+                    },
+                )
             }
         };
 
@@ -344,11 +328,7 @@ impl<B: GfxBackend> Device<B> {
 
         unsafe {
             self.raw
-                .bind_buffer_memory(
-                    memory.memory(),
-                    memory.segment().offset,
-                    &mut buffer,
-                )
+                .bind_buffer_memory(memory.memory(), memory.segment().offset, &mut buffer)
                 .unwrap()
         };
 
@@ -378,9 +358,9 @@ impl<B: GfxBackend> Device<B> {
         // Ensure `D24Plus` textures cannot be copied
         match desc.format {
             TextureFormat::Depth24Plus | TextureFormat::Depth24PlusStencil8 => {
-                assert!(!desc.usage.intersects(
-                    wgt::TextureUsage::COPY_SRC | wgt::TextureUsage::COPY_DST
-                ));
+                assert!(!desc
+                    .usage
+                    .intersects(wgt::TextureUsage::COPY_SRC | wgt::TextureUsage::COPY_DST));
             }
             _ => {}
         }
@@ -407,14 +387,17 @@ impl<B: GfxBackend> Device<B> {
         // TODO: 2D arrays, cubemap arrays
 
         let mut image = unsafe {
-            let mut image = self.raw.create_image(
-                kind,
-                desc.mip_level_count as hal::image::Level,
-                format,
-                hal::image::Tiling::Optimal,
-                usage,
-                view_capabilities,
-            ).unwrap();
+            let mut image = self
+                .raw
+                .create_image(
+                    kind,
+                    desc.mip_level_count as hal::image::Level,
+                    format,
+                    hal::image::Tiling::Optimal,
+                    usage,
+                    view_capabilities,
+                )
+                .unwrap();
             if !desc.label.is_null() {
                 let label = ffi::CStr::from_ptr(desc.label).to_string_lossy();
                 self.raw.set_image_name(&mut image, &label);
@@ -438,11 +421,7 @@ impl<B: GfxBackend> Device<B> {
 
         unsafe {
             self.raw
-                .bind_image_memory(
-                    memory.memory(),
-                    memory.segment().offset,
-                    &mut image,
-                )
+                .bind_image_memory(memory.memory(), memory.segment().offset, &mut image)
                 .unwrap()
         };
 
@@ -457,8 +436,8 @@ impl<B: GfxBackend> Device<B> {
             format: desc.format,
             full_range: hal::image::SubresourceRange {
                 aspects,
-                levels: 0 .. desc.mip_level_count as hal::image::Level,
-                layers: 0 .. desc.array_layer_count as hal::image::Layer,
+                levels: 0..desc.mip_level_count as hal::image::Level,
+                layers: 0..desc.array_layer_count as hal::image::Layer,
             },
             memory,
             life_guard: LifeGuard::new(),
@@ -489,11 +468,9 @@ impl<B: hal::Backend> Device<B> {
 
     pub(crate) fn dispose(self) {
         self.life_tracker.lock().triage_submissions(&self.raw, true);
-        self.life_tracker.lock().cleanup(
-            &self.raw,
-            &self.mem_allocator,
-            &self.desc_allocator,
-        );
+        self.life_tracker
+            .lock()
+            .cleanup(&self.raw, &self.mem_allocator, &self.desc_allocator);
         self.com_allocator.destroy(&self.raw);
         let mut desc_alloc = self.desc_allocator.into_inner();
         let mut mem_alloc = self.mem_allocator.into_inner();
@@ -510,7 +487,6 @@ impl<B: hal::Backend> Device<B> {
     }
 }
 
-
 impl<G: GlobalIdentityHandlerFactory> Global<G> {
     pub fn device_create_buffer<B: GfxBackend>(
         &self,
@@ -568,7 +544,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             Ok(ptr) => {
                 buffer.map_state = resource::BufferMapState::Active;
                 ptr
-            },
+            }
             Err(e) => {
                 log::error!("failed to create buffer in a mapped state: {:?}", e);
                 ptr::null_mut()
@@ -577,9 +553,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
         let id = hub.buffers.register_identity(id_in, buffer, &mut token);
         log::info!("Created mapped buffer {:?} with {:?}", id, desc);
-        device.trackers
+        device
+            .trackers
             .lock()
-            .buffers.init(
+            .buffers
+            .init(
                 id,
                 ref_count,
                 BufferState::with_usage(wgt::BufferUsage::MAP_WRITE),
@@ -609,7 +587,10 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         match map_buffer(
             &device.raw,
             &mut buffer,
-            hal::buffer::SubRange { offset, size: Some(data.len() as BufferAddress) },
+            hal::buffer::SubRange {
+                offset,
+                size: Some(data.len() as BufferAddress),
+            },
             HostMap::Write,
         ) {
             Ok(ptr) => unsafe {
@@ -644,7 +625,10 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         match map_buffer(
             &device.raw,
             &mut buffer,
-            hal::buffer::SubRange { offset, size: Some(data.len() as BufferAddress) },
+            hal::buffer::SubRange {
+                offset,
+                size: Some(data.len() as BufferAddress),
+            },
             HostMap::Read,
         ) {
             Ok(ptr) => unsafe {
@@ -674,7 +658,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let (device_guard, mut token) = hub.devices.read(&mut token);
         device_guard[device_id]
             .lock_life(&mut token)
-            .suspected_resources.buffers.push(buffer_id);
+            .suspected_resources
+            .buffers
+            .push(buffer_id);
     }
 
     pub fn device_create_texture<B: GfxBackend>(
@@ -693,13 +679,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let ref_count = texture.life_guard.add_ref();
 
         let id = hub.textures.register_identity(id_in, texture, &mut token);
-        device.trackers
+        device
+            .trackers
             .lock()
-            .textures.init(
-                id,
-                ref_count,
-                TextureState::with_range(&range),
-            )
+            .textures
+            .init(id, ref_count, TextureState::with_range(&range))
             .unwrap();
         id
     }
@@ -718,7 +702,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let (device_guard, mut token) = hub.devices.read(&mut token);
         device_guard[device_id]
             .lock_life(&mut token)
-            .suspected_resources.textures.push(texture_id);
+            .suspected_resources
+            .textures
+            .push(texture_id);
     }
 
     pub fn texture_create_view<B: GfxBackend>(
@@ -750,8 +736,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 };
                 let range = hal::image::SubresourceRange {
                     aspects: texture.full_range.aspects,
-                    levels: desc.base_mip_level as u8 .. end_level,
-                    layers: desc.base_array_layer as u16 .. end_layer,
+                    levels: desc.base_mip_level as u8..end_level,
+                    layers: desc.base_array_layer as u16..end_layer,
                 };
                 (desc.format, kind, range)
             }
@@ -797,9 +783,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let ref_count = view.life_guard.add_ref();
 
         let id = hub.texture_views.register_identity(id_in, view, &mut token);
-        device.trackers
+        device
+            .trackers
             .lock()
-            .views.init(id, ref_count, PhantomData)
+            .views
+            .init(id, ref_count, PhantomData)
             .unwrap();
         id
     }
@@ -827,7 +815,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let (device_guard, mut token) = hub.devices.read(&mut token);
         device_guard[device_id]
             .lock_life(&mut token)
-            .suspected_resources.texture_views.push(texture_view_id);
+            .suspected_resources
+            .texture_views
+            .push(texture_view_id);
     }
 
     pub fn device_create_sampler<B: GfxBackend>(
@@ -851,7 +841,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 conv::map_wrap(desc.address_mode_w),
             ),
             lod_bias: hal::image::Lod(0.0),
-            lod_range: hal::image::Lod(desc.lod_min_clamp) .. hal::image::Lod(desc.lod_max_clamp),
+            lod_range: hal::image::Lod(desc.lod_min_clamp)..hal::image::Lod(desc.lod_max_clamp),
             comparison: conv::map_compare_function(desc.compare),
             border: hal::image::PackedColor(0),
             normalized: true,
@@ -869,9 +859,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let ref_count = sampler.life_guard.add_ref();
 
         let id = hub.samplers.register_identity(id_in, sampler, &mut token);
-        device.trackers
+        device
+            .trackers
             .lock()
-            .samplers.init(id, ref_count, PhantomData)
+            .samplers
+            .init(id, ref_count, PhantomData)
             .unwrap();
         id
     }
@@ -890,7 +882,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let (device_guard, mut token) = hub.devices.read(&mut token);
         device_guard[device_id]
             .lock_life(&mut token)
-            .suspected_resources.samplers.push(sampler_id);
+            .suspected_resources
+            .samplers
+            .push(sampler_id);
     }
 
     pub fn device_create_bind_group_layout<B: GfxBackend>(
@@ -902,11 +896,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let mut token = Token::root();
         let hub = B::hub(self);
         let entries = unsafe { slice::from_raw_parts(desc.entries, desc.entries_length) };
-        let entry_map: FastHashMap<_, _> = entries
-            .iter()
-            .cloned()
-            .map(|b| (b.binding, b))
-            .collect();
+        let entry_map: FastHashMap<_, _> =
+            entries.iter().cloned().map(|b| (b.binding, b)).collect();
 
         // TODO: deduplicate the bind group layouts at some level.
         // We can't do it right here, because in the remote scenario
@@ -942,7 +933,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 .unwrap();
             if !desc.label.is_null() {
                 let label = ffi::CStr::from_ptr(desc.label).to_string_lossy();
-                device.raw.set_descriptor_set_layout_name(&mut raw_layout, &label);
+                device
+                    .raw
+                    .set_descriptor_set_layout_name(&mut raw_layout, &label);
             }
             raw_layout
         };
@@ -962,13 +955,20 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             .register_identity(id_in, layout, &mut token)
     }
 
-    pub fn bind_group_layout_destroy<B: GfxBackend>(&self, bind_group_layout_id: id::BindGroupLayoutId) {
+    pub fn bind_group_layout_destroy<B: GfxBackend>(
+        &self,
+        bind_group_layout_id: id::BindGroupLayoutId,
+    ) {
         let hub = B::hub(self);
         let mut token = Token::root();
         let (device_guard, mut token) = hub.devices.read(&mut token);
-        let (bgl, _) = hub.bind_group_layouts.unregister(bind_group_layout_id, &mut token);
+        let (bgl, _) = hub
+            .bind_group_layouts
+            .unregister(bind_group_layout_id, &mut token);
         unsafe {
-            device_guard[bgl.device_id.value].raw.destroy_descriptor_set_layout(bgl.raw);
+            device_guard[bgl.device_id.value]
+                .raw
+                .destroy_descriptor_set_layout(bgl.raw);
         }
     }
 
@@ -1020,9 +1020,13 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let hub = B::hub(self);
         let mut token = Token::root();
         let (device_guard, mut token) = hub.devices.read(&mut token);
-        let (pipeline_layout, _) = hub.pipeline_layouts.unregister(pipeline_layout_id, &mut token);
+        let (pipeline_layout, _) = hub
+            .pipeline_layouts
+            .unregister(pipeline_layout_id, &mut token);
         unsafe {
-            device_guard[pipeline_layout.device_id.value].raw.destroy_pipeline_layout(pipeline_layout.raw);
+            device_guard[pipeline_layout.device_id.value]
+                .raw
+                .destroy_pipeline_layout(pipeline_layout.raw);
         }
     }
 
@@ -1039,8 +1043,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let device = &device_guard[device_id];
         let (bind_group_layout_guard, mut token) = hub.bind_group_layouts.read(&mut token);
         let bind_group_layout = &bind_group_layout_guard[desc.layout];
-        let entries =
-            unsafe { slice::from_raw_parts(desc.entries, desc.entries_length) };
+        let entries = unsafe { slice::from_raw_parts(desc.entries, desc.entries_length) };
         assert_eq!(entries.len(), bind_group_layout.entries.len());
 
         let desc_set = unsafe {
@@ -1078,7 +1081,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             //TODO: group writes into contiguous sections
             let mut writes = Vec::new();
             for b in entries.iter() {
-                let decl = bind_group_layout.entries.get(&b.binding)
+                let decl = bind_group_layout
+                    .entries
+                    .get(&b.binding)
                     .expect("Failed to find binding declaration for binding");
                 let descriptor = match b.resource {
                     binding_model::BindingResource::Buffer(ref bb) => {
@@ -1092,11 +1097,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                             binding_model::BindingType::ReadonlyStorageBuffer => {
                                 (BIND_BUFFER_ALIGNMENT, wgt::BufferUsage::STORAGE_READ)
                             }
-                            binding_model::BindingType::Sampler |
-                            binding_model::BindingType::ComparisonSampler |
-                            binding_model::BindingType::SampledTexture |
-                            binding_model::BindingType::ReadonlyStorageTexture |
-                            binding_model::BindingType::WriteonlyStorageTexture => {
+                            binding_model::BindingType::Sampler
+                            | binding_model::BindingType::ComparisonSampler
+                            | binding_model::BindingType::SampledTexture
+                            | binding_model::BindingType::ReadonlyStorageTexture
+                            | binding_model::BindingType::WriteonlyStorageTexture => {
                                 panic!("Mismatched buffer binding for {:?}", decl)
                             }
                         };
@@ -1118,12 +1123,14 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
                         let sub_range = hal::buffer::SubRange {
                             offset: bb.offset,
-                            size: if bb.size == 0 { None } else {
+                            size: if bb.size == 0 {
+                                None
+                            } else {
                                 let end = bb.offset + bb.size;
                                 assert!(
                                     end <= buffer.size,
                                     "Bound buffer range {:?} does not fit in buffer size {}",
-                                    bb.offset .. end,
+                                    bb.offset..end,
                                     buffer.size
                                 );
                                 Some(bb.size)
@@ -1133,8 +1140,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     }
                     binding_model::BindingResource::Sampler(id) => {
                         match decl.ty {
-                            binding_model::BindingType::Sampler |
-                            binding_model::BindingType::ComparisonSampler => {}
+                            binding_model::BindingType::Sampler
+                            | binding_model::BindingType::ComparisonSampler => {}
                             _ => panic!("Wrong binding type for a sampler: {:?}", decl.ty),
                         }
                         let sampler = used
@@ -1149,8 +1156,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                                 wgt::TextureUsage::SAMPLED,
                                 hal::image::Layout::ShaderReadOnlyOptimal,
                             ),
-                            binding_model::BindingType::ReadonlyStorageTexture |
-                            binding_model::BindingType::WriteonlyStorageTexture => {
+                            binding_model::BindingType::ReadonlyStorageTexture
+                            | binding_model::BindingType::WriteonlyStorageTexture => {
                                 (wgt::TextureUsage::STORAGE, hal::image::Layout::General)
                             }
                             _ => panic!("Mismatched texture binding for {:?}", decl),
@@ -1211,12 +1218,14 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         };
         let ref_count = bind_group.life_guard.add_ref();
 
-
         let id = hub
             .bind_groups
             .register_identity(id_in, bind_group, &mut token);
-        log::debug!("Bind group {:?} {:#?}",
-            id, hub.bind_groups.read(&mut token).0[id].used);
+        log::debug!(
+            "Bind group {:?} {:#?}",
+            id,
+            hub.bind_groups.read(&mut token).0[id].used
+        );
 
         device
             .trackers
@@ -1241,7 +1250,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let (device_guard, mut token) = hub.devices.read(&mut token);
         device_guard[device_id]
             .lock_life(&mut token)
-            .suspected_resources.bind_groups.push(bind_group_id);
+            .suspected_resources
+            .bind_groups
+            .push(bind_group_id);
     }
 
     pub fn device_create_shader_module<B: GfxBackend>(
@@ -1256,12 +1267,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let device = &device_guard[device_id];
 
         let spv = unsafe { slice::from_raw_parts(desc.code.bytes, desc.code.length) };
-        let raw = unsafe {
-            device
-                .raw
-                .create_shader_module(spv)
-                .unwrap()
-        };
+        let raw = unsafe { device.raw.create_shader_module(spv).unwrap() };
         let shader = pipeline::ShaderModule {
             raw,
             device_id: Stored {
@@ -1280,7 +1286,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let (device_guard, mut token) = hub.devices.read(&mut token);
         let (module, _) = hub.shader_modules.unregister(shader_module_id, &mut token);
         unsafe {
-            device_guard[module.device_id.value].raw.destroy_shader_module(module.raw);
+            device_guard[module.device_id.value]
+                .raw
+                .destroy_shader_module(module.raw);
         }
     }
 
@@ -1301,31 +1309,30 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             ref_count: device.life_guard.add_ref(),
         };
 
-        let lowest_active_index = device
-            .lock_life(&mut token)
-            .lowest_active_submission();
+        let lowest_active_index = device.lock_life(&mut token).lowest_active_submission();
 
-        let mut command_buffer = device
-            .com_allocator
-            .allocate(dev_stored, &device.raw, device.features, lowest_active_index);
+        let mut command_buffer = device.com_allocator.allocate(
+            dev_stored,
+            &device.raw,
+            device.features,
+            lowest_active_index,
+        );
         unsafe {
             let raw_command_buffer = command_buffer.raw.last_mut().unwrap();
             if !desc.label.is_null() {
                 let label = ffi::CStr::from_ptr(desc.label).to_string_lossy();
-                device.raw.set_command_buffer_name(raw_command_buffer, &label);
+                device
+                    .raw
+                    .set_command_buffer_name(raw_command_buffer, &label);
             }
-            raw_command_buffer.begin_primary(
-                hal::command::CommandBufferFlags::ONE_TIME_SUBMIT,
-            );
+            raw_command_buffer.begin_primary(hal::command::CommandBufferFlags::ONE_TIME_SUBMIT);
         }
 
         hub.command_buffers
             .register_identity(id_in, command_buffer, &mut token)
     }
 
-    pub fn command_encoder_destroy<B: GfxBackend>(
-        &self, command_encoder_id: id::CommandEncoderId
-    ) {
+    pub fn command_encoder_destroy<B: GfxBackend>(&self, command_encoder_id: id::CommandEncoderId) {
         let hub = B::hub(self);
         let mut token = Token::root();
 
@@ -1387,13 +1394,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
         device
             .lock_life(&mut token)
-            .suspected_resources.extend(&device.temp_suspected);
+            .suspected_resources
+            .extend(&device.temp_suspected);
         device.com_allocator.discard(comb);
     }
 
-    pub fn command_buffer_destroy<B: GfxBackend>(
-        &self, command_buffer_id: id::CommandBufferId
-    ) {
+    pub fn command_buffer_destroy<B: GfxBackend>(&self, command_buffer_id: id::CommandBufferId) {
         self.command_encoder_destroy::<B>(command_buffer_id)
     }
 
@@ -1497,9 +1503,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 // execute resource transitions
                 let mut transit = device.com_allocator.extend(comb);
                 unsafe {
-                    transit.begin_primary(
-                        hal::command::CommandBufferFlags::ONE_TIME_SUBMIT,
-                    );
+                    transit.begin_primary(hal::command::CommandBufferFlags::ONE_TIME_SUBMIT);
                 }
                 log::trace!("Stitching command buffer {:?} before submission", cmb_id);
                 command::CommandBuffer::insert_barriers(
@@ -1530,7 +1534,6 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 signal_semaphores: signal_swapchain_semaphores
                     .into_iter()
                     .map(|sc_id| &swap_chain_guard[sc_id].semaphore),
-
             };
 
             unsafe {
@@ -1547,9 +1550,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             let device = &device_guard[queue_id];
 
             let callbacks = device.maintain(self, false, &mut token);
-            device
-                .lock_life(&mut token)
-                .track_submission(submit_index, fence, &device.temp_suspected);
+            device.lock_life(&mut token).track_submission(
+                submit_index,
+                fence,
+                &device.temp_suspected,
+            );
 
             // finally, return the command buffers to the allocator
             for &cmb_id in command_buffer_ids {
@@ -1681,7 +1686,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                         samples: sc,
                         ops: hal::pass::AttachmentOps::PRESERVE,
                         stencil_ops: hal::pass::AttachmentOps::DONT_CARE,
-                        layouts: hal::image::Layout::General .. hal::image::Layout::General,
+                        layouts: hal::image::Layout::General..hal::image::Layout::General,
                     })
                     .collect(),
                 // We can ignore the resolves as the vulkan specs says:
@@ -1694,7 +1699,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     samples: sc,
                     ops: hal::pass::AttachmentOps::PRESERVE,
                     stencil_ops: hal::pass::AttachmentOps::PRESERVE,
-                    layouts: hal::image::Layout::General .. hal::image::Layout::General,
+                    layouts: hal::image::Layout::General..hal::image::Layout::General,
                 }),
             };
 
@@ -1715,7 +1720,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     );
 
                     let subpass = hal::pass::SubpassDesc {
-                        colors: &color_ids[.. desc.color_states_length],
+                        colors: &color_ids[..desc.color_states_length],
                         depth_stencil: depth_stencil_state.map(|_| &depth_id),
                         inputs: &[],
                         resolves: &[],
@@ -1844,7 +1849,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
         device_guard[device_id]
             .lock_life(&mut token)
-            .suspected_resources.render_pipelines.push(render_pipeline_id);
+            .suspected_resources
+            .render_pipelines
+            .push(render_pipeline_id);
     }
 
     pub fn device_create_compute_pipeline<B: GfxBackend>(
@@ -1906,7 +1913,10 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             .register_identity(id_in, pipeline, &mut token)
     }
 
-    pub fn compute_pipeline_destroy<B: GfxBackend>(&self, compute_pipeline_id: id::ComputePipelineId) {
+    pub fn compute_pipeline_destroy<B: GfxBackend>(
+        &self,
+        compute_pipeline_id: id::ComputePipelineId,
+    ) {
         let hub = B::hub(self);
         let mut token = Token::root();
         let (device_guard, mut token) = hub.devices.read(&mut token);
@@ -1920,8 +1930,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
 
         device_guard[device_id]
             .lock_life(&mut token)
-            .suspected_resources.compute_pipelines.push(compute_pipeline_id);
-
+            .suspected_resources
+            .compute_pipelines
+            .push(compute_pipeline_id);
     }
 
     pub fn device_create_swap_chain<B: GfxBackend>(
@@ -1980,7 +1991,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let num_frames = swap_chain::DESIRED_NUM_FRAMES
             .max(*caps.image_count.start())
             .min(*caps.image_count.end());
-        let mut config = swap_chain::swap_chain_descriptor_to_hal(&desc, num_frames, device.features);
+        let mut config =
+            swap_chain::swap_chain_descriptor_to_hal(&desc, num_frames, device.features);
         if let Some(formats) = formats {
             assert!(
                 formats.contains(&config.format),
@@ -2100,14 +2112,16 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     operation.call_error();
                     return;
                 }
-                resource::BufferMapState::Idle => resource::BufferMapState::Waiting(resource::BufferPendingMapping {
-                    sub_range: hal::buffer::SubRange {
-                        offset: range.start,
-                        size: Some(range.end - range.start),
-                    },
-                    op: operation,
-                    parent_ref_count: buffer.life_guard.add_ref(),
-                }),
+                resource::BufferMapState::Idle => {
+                    resource::BufferMapState::Waiting(resource::BufferPendingMapping {
+                        sub_range: hal::buffer::SubRange {
+                            offset: range.start,
+                            size: Some(range.end - range.start),
+                        },
+                        op: operation,
+                        parent_ref_count: buffer.life_guard.add_ref(),
+                    })
+                }
             };
             log::debug!("Buffer {:?} map state -> Waiting", buffer_id);
 
@@ -2122,9 +2136,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             .buffers
             .change_replace(buffer_id, &ref_count, (), usage);
 
-        device
-            .lock_life(&mut token)
-            .map(buffer_id, ref_count);
+        device.lock_life(&mut token).map(buffer_id, ref_count);
     }
 
     pub fn buffer_unmap<B: GfxBackend>(&self, buffer_id: id::BufferId) {
@@ -2136,9 +2148,6 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let buffer = &mut buffer_guard[buffer_id];
 
         log::debug!("Buffer {:?} map state -> Idle", buffer_id);
-        unmap_buffer(
-            &device_guard[buffer.device_id.value].raw,
-            buffer,
-        );
+        unmap_buffer(&device_guard[buffer.device_id.value].raw, buffer);
     }
 }

wgpu-core/src/hub.rs

@@ -8,40 +8,25 @@ use crate::{
     command::CommandBuffer,
     device::Device,
     id::{
-        AdapterId,
-        BindGroupId,
-        BindGroupLayoutId,
-        BufferId,
-        CommandBufferId,
-        ComputePipelineId,
-        DeviceId,
-        PipelineLayoutId,
-        RenderPipelineId,
-        SamplerId,
-        ShaderModuleId,
-        SurfaceId,
-        SwapChainId,
-        TextureId,
-        TextureViewId,
-        TypedId,
+        AdapterId, BindGroupId, BindGroupLayoutId, BufferId, CommandBufferId, ComputePipelineId,
+        DeviceId, PipelineLayoutId, RenderPipelineId, SamplerId, ShaderModuleId, SurfaceId,
+        SwapChainId, TextureId, TextureViewId, TypedId,
     },
     instance::{Adapter, Instance, Surface},
     pipeline::{ComputePipeline, RenderPipeline, ShaderModule},
     resource::{Buffer, Sampler, Texture, TextureView},
     swap_chain::SwapChain,
-    Epoch,
-    Index,
+    Epoch, Index,
 };
 
-use wgt::Backend;
 use parking_lot::{Mutex, RwLock, RwLockReadGuard, RwLockWriteGuard};
 use vec_map::VecMap;
+use wgt::Backend;
 
 #[cfg(debug_assertions)]
 use std::cell::Cell;
 use std::{fmt::Debug, iter, marker::PhantomData, ops};
 
-
 /// A simple structure to manage identities of objects.
 #[derive(Debug)]
 pub struct IdentityManager {
@@ -136,11 +121,9 @@ impl<T, I: TypedId> Storage<T, I> {
     }
 
     pub fn iter(&self, backend: Backend) -> impl Iterator<Item = (I, &T)> {
-        self.map
-            .iter()
-            .map(move |(index, (value, storage_epoch))| {
-                (I::zip(index as Index, *storage_epoch, backend), value)
-            })
+        self.map.iter().map(move |(index, (value, storage_epoch))| {
+            (I::zip(index as Index, *storage_epoch, backend), value)
+        })
     }
 }
 
@@ -252,7 +235,6 @@ impl<'a, T> Drop for Token<'a, T> {
     }
 }
 
-
 pub trait IdentityHandler<I>: Debug {
     type Input: Clone + Debug;
     fn process(&self, id: Self::Input, backend: Backend) -> I;
@@ -281,35 +263,35 @@ impl<I: TypedId + Debug> IdentityHandlerFactory<I> for IdentityManagerFactory {
     type Filter = Mutex<IdentityManager>;
     fn spawn(&self, min_index: Index) -> Self::Filter {
         let mut man = IdentityManager::default();
-        man.free.extend(0 .. min_index);
+        man.free.extend(0..min_index);
         man.epochs.extend(iter::repeat(1).take(min_index as usize));
         Mutex::new(man)
     }
 }
 
 pub trait GlobalIdentityHandlerFactory:
-    IdentityHandlerFactory<AdapterId> +
-    IdentityHandlerFactory<DeviceId> +
-    IdentityHandlerFactory<SwapChainId> +
-    IdentityHandlerFactory<PipelineLayoutId> +
-    IdentityHandlerFactory<ShaderModuleId> +
-    IdentityHandlerFactory<BindGroupLayoutId> +
-    IdentityHandlerFactory<BindGroupId> +
-    IdentityHandlerFactory<CommandBufferId> +
-    IdentityHandlerFactory<RenderPipelineId> +
-    IdentityHandlerFactory<ComputePipelineId> +
-    IdentityHandlerFactory<BufferId> +
-    IdentityHandlerFactory<TextureId> +
-    IdentityHandlerFactory<TextureViewId> +
-    IdentityHandlerFactory<SamplerId> +
-    IdentityHandlerFactory<SurfaceId>
-{}
+    IdentityHandlerFactory<AdapterId>
+    + IdentityHandlerFactory<DeviceId>
+    + IdentityHandlerFactory<SwapChainId>
+    + IdentityHandlerFactory<PipelineLayoutId>
+    + IdentityHandlerFactory<ShaderModuleId>
+    + IdentityHandlerFactory<BindGroupLayoutId>
+    + IdentityHandlerFactory<BindGroupId>
+    + IdentityHandlerFactory<CommandBufferId>
+    + IdentityHandlerFactory<RenderPipelineId>
+    + IdentityHandlerFactory<ComputePipelineId>
+    + IdentityHandlerFactory<BufferId>
+    + IdentityHandlerFactory<TextureId>
+    + IdentityHandlerFactory<TextureViewId>
+    + IdentityHandlerFactory<SamplerId>
+    + IdentityHandlerFactory<SurfaceId>
+{
+}
 
 impl GlobalIdentityHandlerFactory for IdentityManagerFactory {}
 
 pub type Input<G, I> = <<G as IdentityHandlerFactory<I>>::Filter as IdentityHandler<I>>::Input;
 
-
 #[derive(Debug)]
 pub struct Registry<T, I: TypedId, F: IdentityHandlerFactory<I>> {
     identity: F::Filter,

wgpu-core/src/id.rs

@@ -5,15 +5,19 @@
 use crate::{Epoch, Index};
 #[cfg(feature = "serde")]
 use serde_crate::{Deserialize, Serialize};
-use wgt::Backend;
 use std::{fmt, marker::PhantomData, mem, num::NonZeroU64};
+use wgt::Backend;
 
 const BACKEND_BITS: usize = 3;
 const EPOCH_MASK: u32 = (1 << (32 - BACKEND_BITS)) - 1;
 type Dummy = crate::backend::Empty;
 
 #[repr(transparent)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub struct Id<T>(NonZeroU64, PhantomData<T>);
 
 // required for PeekPoke
@@ -75,7 +79,7 @@ impl<T> Eq for Id<T> {}
 
 unsafe impl<T> peek_poke::Poke for Id<T> {
     fn max_size() -> usize {
-         mem::size_of::<u64>()
+        mem::size_of::<u64>()
     }
     unsafe fn poke_into(&self, data: *mut u8) -> *mut u8 {
         self.0.get().poke_into(data)
@@ -112,7 +116,6 @@ impl<T> TypedId for Id<T> {
     }
 }
 
-
 pub type AdapterId = Id<crate::instance::Adapter<Dummy>>;
 pub type SurfaceId = Id<crate::instance::Surface>;
 // Device

wgpu-core/src/instance.rs

@@ -17,20 +17,19 @@ use serde_crate::{Deserialize, Serialize};
 
 use hal::{
     self,
-    adapter::{
-        AdapterInfo as HalAdapterInfo,
-        DeviceType as HalDeviceType,
-        PhysicalDevice as _,
-    },
+    adapter::{AdapterInfo as HalAdapterInfo, DeviceType as HalDeviceType, PhysicalDevice as _},
     queue::QueueFamily as _,
     window::Surface as _,
     Instance as _,
 };
 
-
 #[repr(C)]
 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub struct RequestAdapterOptions {
     pub power_preference: PowerPreference,
     pub compatible_surface: Option<SurfaceId>,
@@ -125,7 +124,11 @@ pub struct Adapter<B: hal::Backend> {
 
 /// Metadata about a backend adapter.
 #[derive(Clone, Debug, PartialEq)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub struct AdapterInfo {
     /// Adapter name
     pub name: String,
@@ -160,7 +163,11 @@ impl AdapterInfo {
 
 /// Supported physical device types
 #[derive(Clone, Debug, PartialEq)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(crate="serde_crate"))]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(crate = "serde_crate")
+)]
 pub enum DeviceType {
     /// Other
     Other,
@@ -300,13 +307,17 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let mut adapters_vk = match instance.vulkan {
             Some(ref inst) if id_vulkan.is_some() => {
                 let mut adapters = inst.enumerate_adapters();
-                if let Some(&Surface { vulkan: Some(ref surface), .. }) = compatible_surface {
-                    adapters.retain(|a|
+                if let Some(&Surface {
+                    vulkan: Some(ref surface),
+                    ..
+                }) = compatible_surface
+                {
+                    adapters.retain(|a| {
                         a.queue_families
                             .iter()
                             .find(|qf| qf.queue_type().supports_graphics())
                             .map_or(false, |qf| surface.supports_queue_family(qf))
-                    );
+                    });
                 }
                 device_types.extend(adapters.iter().map(|ad| ad.info.device_type.clone()));
                 adapters
@@ -317,12 +328,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let mut adapters_mtl = if id_metal.is_some() {
             let mut adapters = instance.metal.enumerate_adapters();
             if let Some(surface) = compatible_surface {
-                adapters.retain(|a|
+                adapters.retain(|a| {
                     a.queue_families
                         .iter()
                         .find(|qf| qf.queue_type().supports_graphics())
                         .map_or(false, |qf| surface.metal.supports_queue_family(qf))
-                );
+                });
             }
             device_types.extend(adapters.iter().map(|ad| ad.info.device_type.clone()));
             adapters
@@ -333,13 +344,17 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let mut adapters_dx12 = match instance.dx12 {
             Some(ref inst) if id_dx12.is_some() => {
                 let mut adapters = inst.enumerate_adapters();
-                if let Some(&Surface { dx12: Some(ref surface), .. }) = compatible_surface {
-                    adapters.retain(|a|
+                if let Some(&Surface {
+                    dx12: Some(ref surface),
+                    ..
+                }) = compatible_surface
+                {
+                    adapters.retain(|a| {
                         a.queue_families
                             .iter()
                             .find(|qf| qf.queue_type().supports_graphics())
                             .map_or(false, |qf| surface.supports_queue_family(qf))
-                    );
+                    });
                 }
                 device_types.extend(adapters.iter().map(|ad| ad.info.device_type.clone()));
                 adapters
@@ -350,12 +365,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let mut adapters_dx11 = if id_dx11.is_some() {
             let mut adapters = instance.dx11.enumerate_adapters();
             if let Some(surface) = compatible_surface {
-                adapters.retain(|a|
+                adapters.retain(|a| {
                     a.queue_families
                         .iter()
                         .find(|qf| qf.queue_type().supports_graphics())
                         .map_or(false, |qf| surface.dx11.supports_queue_family(qf))
-                );
+                });
             }
             device_types.extend(adapters.iter().map(|ad| ad.info.device_type.clone()));
             adapters
@@ -388,14 +403,15 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         }
 
         let preferred_gpu = match desc.power_preference {
-            PowerPreference::Default => {
-                match power::is_battery_discharging() {
-                    Ok(false) => discrete.or(integrated).or(other).or(virt),
-                    Ok(true) => integrated.or(discrete).or(other).or(virt),
-                    Err(err) => {
-                        log::debug!("Power info unavailable, preferring integrated gpu ({})", err);
-                        integrated.or(discrete).or(other).or(virt)
-                    }
+            PowerPreference::Default => match power::is_battery_discharging() {
+                Ok(false) => discrete.or(integrated).or(other).or(virt),
+                Ok(true) => integrated.or(discrete).or(other).or(virt),
+                Err(err) => {
+                    log::debug!(
+                        "Power info unavailable, preferring integrated gpu ({})",
+                        err
+                    );
+                    integrated.or(discrete).or(other).or(virt)
                 }
             },
             PowerPreference::LowPower => integrated.or(other).or(discrete).or(virt),
@@ -500,13 +516,15 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
         let device = {
             let (adapter_guard, _) = hub.adapters.read(&mut token);
             let adapter = &adapter_guard[adapter_id].raw;
-            let wishful_features =
-                hal::Features::VERTEX_STORES_AND_ATOMICS |
-                hal::Features::FRAGMENT_STORES_AND_ATOMICS |
-                hal::Features::NDC_Y_UP;
+            let wishful_features = hal::Features::VERTEX_STORES_AND_ATOMICS
+                | hal::Features::FRAGMENT_STORES_AND_ATOMICS
+                | hal::Features::NDC_Y_UP;
             let enabled_features = adapter.physical_device.features() & wishful_features;
             if enabled_features != wishful_features {
-                log::warn!("Missing features: {:?}", wishful_features - enabled_features);
+                log::warn!(
+                    "Missing features: {:?}",
+                    wishful_features - enabled_features
+                );
             }
 
             let family = adapter

wgpu-core/src/lib.rs

@@ -103,8 +103,7 @@ impl LifeGuard {
 
     /// Returns `true` if the resource is still needed by the user.
     fn use_at(&self, submit_index: SubmissionIndex) -> bool {
-        self.submission_index
-            .store(submit_index, Ordering::Release);
+        self.submission_index.store(submit_index, Ordering::Release);
         self.ref_count.is_some()
     }
 }

wgpu-core/src/pipeline.rs

@@ -5,14 +5,13 @@
 use crate::{
     device::RenderPassContext,
     id::{DeviceId, PipelineLayoutId, ShaderModuleId},
-    LifeGuard,
-    RawString,
-    RefCount,
-    Stored,
-    U32Array
+    LifeGuard, RawString, RefCount, Stored, U32Array,
 };
-use wgt::{BufferAddress, ColorStateDescriptor, DepthStencilStateDescriptor, IndexFormat, InputStepMode, PrimitiveTopology, RasterizationStateDescriptor, VertexAttributeDescriptor};
 use std::borrow::Borrow;
+use wgt::{
+    BufferAddress, ColorStateDescriptor, DepthStencilStateDescriptor, IndexFormat, InputStepMode,
+    PrimitiveTopology, RasterizationStateDescriptor, VertexAttributeDescriptor,
+};
 
 #[repr(C)]
 #[derive(Debug)]
@@ -40,7 +39,7 @@ pub struct ShaderModuleDescriptor {
 #[derive(Debug)]
 pub struct ShaderModule<B: hal::Backend> {
     pub(crate) raw: B::ShaderModule,
-    pub(crate) device_id: Stored<DeviceId>
+    pub(crate) device_id: Stored<DeviceId>,
 }
 
 #[repr(C)]

wgpu-core/src/power.rs

@@ -19,13 +19,16 @@ impl fmt::Display for Error {
     }
 }
 
-#[cfg(all(feature = "battery", any(
-    target_os = "linux",
-    target_os = "macos",
-    target_os = "windows",
-    target_os = "dragonfly",
-    target_os = "freebsd"
-)))]
+#[cfg(all(
+    feature = "battery",
+    any(
+        target_os = "linux",
+        target_os = "macos",
+        target_os = "windows",
+        target_os = "dragonfly",
+        target_os = "freebsd"
+    )
+))]
 mod platform {
     use super::Error;
     use battery::{self, Manager, State};
@@ -49,13 +52,16 @@ mod platform {
     }
 }
 
-#[cfg(any(not(feature = "battery"), not(any(
-    target_os = "linux",
-    target_os = "macos",
-    target_os = "windows",
-    target_os = "dragonfly",
-    target_os = "freebsd"
-))))]
+#[cfg(any(
+    not(feature = "battery"),
+    not(any(
+        target_os = "linux",
+        target_os = "macos",
+        target_os = "windows",
+        target_os = "dragonfly",
+        target_os = "freebsd"
+    ))
+))]
 mod platform {
     use super::Error;
 

wgpu-core/src/resource.rs

@@ -5,18 +5,11 @@
 use crate::{
     id::{DeviceId, SwapChainId, TextureId},
     track::DUMMY_SELECTOR,
-    LifeGuard,
-    RefCount,
-    Stored,
+    LifeGuard, RefCount, Stored,
 };
 
-use wgt::{
-    BufferAddress,
-    BufferUsage,
-    TextureFormat,
-    TextureUsage,
-};
 use gfx_memory::MemoryBlock;
+use wgt::{BufferAddress, BufferUsage, TextureFormat, TextureUsage};
 
 use std::{borrow::Borrow, fmt};
 
@@ -47,7 +40,7 @@ pub enum BufferMapOperation {
     Write {
         callback: crate::device::BufferMapWriteCallback,
         userdata: *mut u8,
-    }
+    },
 }
 
 //TODO: clarify if/why this is needed here
@@ -69,11 +62,15 @@ impl BufferMapOperation {
         match self {
             BufferMapOperation::Read { callback, userdata } => {
                 log::error!("wgpu_buffer_map_read_async failed: buffer mapping is pending");
-                unsafe { callback(BufferMapAsyncStatus::Error, std::ptr::null(), userdata); }
+                unsafe {
+                    callback(BufferMapAsyncStatus::Error, std::ptr::null(), userdata);
+                }
             }
             BufferMapOperation::Write { callback, userdata } => {
                 log::error!("wgpu_buffer_map_write_async failed: buffer mapping is pending");
-                unsafe { callback(BufferMapAsyncStatus::Error, std::ptr::null_mut(), userdata); }
+                unsafe {
+                    callback(BufferMapAsyncStatus::Error, std::ptr::null_mut(), userdata);
+                }
             }
         }
     }

wgpu-core/src/swap_chain.rs

@@ -36,15 +36,11 @@ use crate::{
     conv,
     hub::{GfxBackend, Global, GlobalIdentityHandlerFactory, Input, Token},
     id::{DeviceId, SwapChainId, TextureViewId},
-    resource,
-    Features,
-    LifeGuard,
-    Stored,
+    resource, Features, LifeGuard, Stored,
 };
 
-use wgt::SwapChainDescriptor;
 use hal::{self, device::Device as _, queue::CommandQueue as _, window::PresentationSurface as _};
-
+use wgt::SwapChainDescriptor;
 
 const FRAME_TIMEOUT_MS: u64 = 1000;
 pub const DESIRED_NUM_FRAMES: u32 = 3;
@@ -118,7 +114,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 }
                 Err(e) => {
                     log::warn!("acquire_image() failed ({:?}), reconfiguring swapchain", e);
-                    let desc = swap_chain_descriptor_to_hal(&sc.desc, sc.num_frames, device.features);
+                    let desc =
+                        swap_chain_descriptor_to_hal(&sc.desc, sc.num_frames, device.features);
                     unsafe {
                         suf.configure_swapchain(&device.raw, desc).unwrap();
                         suf.acquire_image(FRAME_TIMEOUT_MS * 1_000_000).unwrap()
@@ -144,8 +141,8 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             samples: 1,
             range: hal::image::SubresourceRange {
                 aspects: hal::format::Aspects::COLOR,
-                layers: 0 .. 1,
-                levels: 0 .. 1,
+                layers: 0..1,
+                levels: 0..1,
             },
             life_guard: LifeGuard::new(),
         };

wgpu-core/src/track/buffer.rs

@@ -59,7 +59,7 @@ impl ResourceState for BufferState {
             let pending = PendingTransition {
                 id,
                 selector: (),
-                usage: old .. usage,
+                usage: old..usage,
             };
             self.last = match output {
                 None => pending.collapse()?,
@@ -92,7 +92,7 @@ impl ResourceState for BufferState {
             let pending = PendingTransition {
                 id,
                 selector: (),
-                usage: old .. new,
+                usage: old..new,
             };
             match output {
                 None => pending.collapse()?,
@@ -114,7 +114,7 @@ impl ResourceState for BufferState {
 #[cfg(test)]
 mod test {
     use super::*;
-    use crate::{id::TypedId};
+    use crate::id::TypedId;
 
     #[test]
     fn change() {

wgpu-core/src/track/mod.rs

@@ -10,26 +10,16 @@ use crate::{
     conv,
     hub::Storage,
     id::{self, TypedId},
-    resource,
-    Epoch,
-    FastHashMap,
-    Index,
-    RefCount,
+    resource, Epoch, FastHashMap, Index, RefCount,
 };
 
 use std::{
-    borrow::Borrow,
-    collections::hash_map::Entry,
-    fmt,
-    marker::PhantomData,
-    ops,
-    vec::Drain,
+    borrow::Borrow, collections::hash_map::Entry, fmt, marker::PhantomData, ops, vec::Drain,
 };
 
 pub use buffer::BufferState;
 pub use texture::TextureState;
 
-
 /// A single unit of state tracking. It keeps an initial
 /// usage as well as the last/current one, similar to `Range`.
 #[derive(Clone, Copy, Debug, PartialEq)]
@@ -136,7 +126,8 @@ impl PendingTransition<BufferState> {
     ) -> hal::memory::Barrier<'a, B> {
         log::trace!("\tbuffer -> {:?}", self);
         hal::memory::Barrier::Buffer {
-            states: conv::map_buffer_state(self.usage.start) .. conv::map_buffer_state(self.usage.end),
+            states: conv::map_buffer_state(self.usage.start)
+                ..conv::map_buffer_state(self.usage.end),
             target: &buf.raw,
             range: hal::buffer::SubRange::WHOLE,
             families: None,
@@ -154,11 +145,11 @@ impl PendingTransition<TextureState> {
         let aspects = tex.full_range.aspects;
         hal::memory::Barrier::Image {
             states: conv::map_texture_state(self.usage.start, aspects)
-                .. conv::map_texture_state(self.usage.end, aspects),
+                ..conv::map_texture_state(self.usage.end, aspects),
             target: &tex.raw,
             range: hal::image::SubresourceRange {
                 aspects,
-                .. self.selector
+                ..self.selector
             },
             families: None,
         }
@@ -179,9 +170,7 @@ impl<S: ResourceState + fmt::Debug> fmt::Debug for ResourceTracker<S> {
     fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
         self.map
             .iter()
-            .map(|(&index, res)| {
-                ((index, res.epoch), &res.state)
-            })
+            .map(|(&index, res)| ((index, res.epoch), &res.state))
             .collect::<FastHashMap<_, _>>()
             .fmt(formatter)
     }
@@ -256,12 +245,7 @@ impl<S: ResourceState> ResourceTracker<S> {
     /// Initialize a resource to be used.
     ///
     /// Returns false if the resource is already registered.
-    pub fn init(
-        &mut self,
-        id: S::Id,
-        ref_count: RefCount,
-        state: S,
-    ) -> Result<(), &S> {
+    pub fn init(&mut self, id: S::Id, ref_count: RefCount, state: S) -> Result<(), &S> {
         let (index, epoch, backend) = id.unzip();
         debug_assert_eq!(backend, self.backend);
         match self.map.entry(index) {
@@ -273,9 +257,7 @@ impl<S: ResourceState> ResourceTracker<S> {
                 });
                 Ok(())
             }
-            Entry::Occupied(e) => {
-                Err(&e.into_mut().state)
-            }
+            Entry::Occupied(e) => Err(&e.into_mut().state),
         }
     }
 
@@ -356,9 +338,7 @@ impl<S: ResourceState> ResourceTracker<S> {
                 Entry::Occupied(e) => {
                     assert_eq!(e.get().epoch, new.epoch);
                     let id = S::Id::zip(index, new.epoch, self.backend);
-                    e.into_mut()
-                        .state
-                        .merge(id, &new.state, None)?;
+                    e.into_mut().state.merge(id, &new.state, None)?;
                 }
             }
         }
@@ -367,10 +347,7 @@ impl<S: ResourceState> ResourceTracker<S> {
 
     /// Merge another tracker, adding it's transitions to `self`.
     /// Transitions the current usage to the new one.
-    pub fn merge_replace<'a>(
-        &'a mut self,
-        other: &'a Self,
-    ) -> Drain<PendingTransition<S>> {
+    pub fn merge_replace<'a>(&'a mut self, other: &'a Self) -> Drain<PendingTransition<S>> {
         for (&index, new) in other.map.iter() {
             match self.map.entry(index) {
                 Entry::Vacant(e) => {
@@ -424,7 +401,6 @@ impl<S: ResourceState> ResourceTracker<S> {
     }
 }
 
-
 impl<I: Copy + fmt::Debug + TypedId> ResourceState for PhantomData<I> {
     type Id = I;
     type Selector = ();
@@ -458,7 +434,6 @@ impl<I: Copy + fmt::Debug + TypedId> ResourceState for PhantomData<I> {
 
 pub const DUMMY_SELECTOR: () = ();
 
-
 /// A set of trackers for all relevant resources.
 #[derive(Debug)]
 pub struct TrackerSet {
@@ -515,7 +490,9 @@ impl TrackerSet {
         self.views.merge_extend(&other.views).unwrap();
         self.bind_groups.merge_extend(&other.bind_groups).unwrap();
         self.samplers.merge_extend(&other.samplers).unwrap();
-        self.compute_pipes.merge_extend(&other.compute_pipes).unwrap();
+        self.compute_pipes
+            .merge_extend(&other.compute_pipes)
+            .unwrap();
         self.render_pipes.merge_extend(&other.render_pipes).unwrap();
     }
 

wgpu-core/src/track/range.rs

@@ -4,13 +4,7 @@
 
 use smallvec::SmallVec;
 
-use std::{
-    cmp::Ordering,
-    fmt::Debug,
-    iter,
-    ops::Range,
-    slice::Iter,
-};
+use std::{cmp::Ordering, fmt::Debug, iter, ops::Range, slice::Iter};
 
 /// Structure that keeps track of a I -> T mapping,
 /// optimized for a case where keys of the same values
@@ -66,7 +60,7 @@ impl<I: Copy + PartialOrd, T: Copy + PartialEq> RangedStates<I, T> {
         for a in self.ranges.iter() {
             assert!(a.0.start < a.0.end);
         }
-        for (a, b) in self.ranges.iter().zip(self.ranges[1 ..].iter()) {
+        for (a, b) in self.ranges.iter().zip(self.ranges[1..].iter()) {
             assert!(a.0.end <= b.0.start);
         }
     }
@@ -128,7 +122,7 @@ impl<I: Copy + PartialOrd, T: Copy + PartialEq> RangedStates<I, T> {
             None => {
                 let pos = self.ranges.len();
                 self.ranges.push((index.clone(), default));
-                return &mut self.ranges[pos ..];
+                return &mut self.ranges[pos..];
             }
         };
 
@@ -137,7 +131,7 @@ impl<I: Copy + PartialOrd, T: Copy + PartialEq> RangedStates<I, T> {
             if range.start < index.start {
                 self.ranges[start_pos].0.start = index.start;
                 self.ranges
-                    .insert(start_pos, (range.start .. index.start, value));
+                    .insert(start_pos, (range.start..index.start, value));
                 start_pos += 1;
             }
         }
@@ -146,19 +140,19 @@ impl<I: Copy + PartialOrd, T: Copy + PartialEq> RangedStates<I, T> {
         loop {
             let (range, value) = self.ranges[pos].clone();
             if range.start >= index.end {
-                self.ranges.insert(pos, (range_pos .. index.end, default));
+                self.ranges.insert(pos, (range_pos..index.end, default));
                 pos += 1;
                 break;
             }
             if range.start > range_pos {
-                self.ranges.insert(pos, (range_pos .. range.start, default));
+                self.ranges.insert(pos, (range_pos..range.start, default));
                 pos += 1;
                 range_pos = range.start;
             }
             if range.end >= index.end {
                 if range.end != index.end {
                     self.ranges[pos].0.start = index.end;
-                    self.ranges.insert(pos, (range_pos .. index.end, value));
+                    self.ranges.insert(pos, (range_pos..index.end, value));
                 }
                 pos += 1;
                 break;
@@ -166,16 +160,15 @@ impl<I: Copy + PartialOrd, T: Copy + PartialEq> RangedStates<I, T> {
             pos += 1;
             range_pos = range.end;
             if pos == self.ranges.len() {
-                self.ranges.push((range_pos .. index.end, default));
+                self.ranges.push((range_pos..index.end, default));
                 pos += 1;
                 break;
             }
         }
 
-        &mut self.ranges[start_pos .. pos]
+        &mut self.ranges[start_pos..pos]
     }
 
-
     /// Helper method for isolation that checks the sanity of the results.
     #[cfg(test)]
     pub fn sanely_isolated(&self, index: Range<I>, default: T) -> Vec<(Range<I>, T)> {
@@ -198,7 +191,6 @@ impl<I: Copy + PartialOrd, T: Copy + PartialEq> RangedStates<I, T> {
     }
 }
 
-
 /// A custom iterator that goes through two `RangedStates` and process a merge.
 #[derive(Debug)]
 pub struct Merge<'a, I, T> {
@@ -218,32 +210,32 @@ impl<'a, I: Copy + Debug + Ord, T: Copy + Debug> Iterator for Merge<'a, I, T> {
                     if self.base == rb.start {
                         // right stream is starting
                         debug_assert!(self.base < ra.end);
-                        (self.base .. ra.end.min(rb.end), Some(*va) .. Some(*vb))
+                        (self.base..ra.end.min(rb.end), Some(*va)..Some(*vb))
                     } else {
                         // right hasn't started yet
                         debug_assert!(self.base < rb.start);
-                        (self.base .. rb.start, Some(*va) .. None)
+                        (self.base..rb.start, Some(*va)..None)
                     }
                 } else if rb.start < self.base {
                     // in the middle of the right stream
                     if self.base == ra.start {
                         // left stream is starting
                         debug_assert!(self.base < rb.end);
-                        (self.base .. ra.end.min(rb.end), Some(*va) .. Some(*vb))
+                        (self.base..ra.end.min(rb.end), Some(*va)..Some(*vb))
                     } else {
                         // left hasn't started yet
                         debug_assert!(self.base < ra.start);
-                        (self.base .. ra.start, None .. Some(*vb))
+                        (self.base..ra.start, None..Some(*vb))
                     }
                 } else {
                     // no active streams
                     match ra.start.cmp(&rb.start) {
                         // both are starting
-                        Ordering::Equal => (ra.start .. ra.end.min(rb.end), Some(*va) .. Some(*vb)),
+                        Ordering::Equal => (ra.start..ra.end.min(rb.end), Some(*va)..Some(*vb)),
                         // only left is starting
-                        Ordering::Less => (ra.start .. rb.start.min(ra.end), Some(*va) .. None),
+                        Ordering::Less => (ra.start..rb.start.min(ra.end), Some(*va)..None),
                         // only right is starting
-                        Ordering::Greater => (rb.start .. ra.start.min(rb.end), None .. Some(*vb)),
+                        Ordering::Greater => (rb.start..ra.start.min(rb.end), None..Some(*vb)),
                     }
                 };
                 self.base = range.end;
@@ -257,17 +249,17 @@ impl<'a, I: Copy + Debug + Ord, T: Copy + Debug> Iterator for Merge<'a, I, T> {
             }
             // only right stream
             (None, Some(&(ref rb, vb))) => {
-                let range = self.base.max(rb.start) .. rb.end;
+                let range = self.base.max(rb.start)..rb.end;
                 self.base = rb.end;
                 let _ = self.sb.next();
-                Some((range, None .. Some(*vb)))
+                Some((range, None..Some(*vb)))
             }
             // only left stream
             (Some(&(ref ra, va)), None) => {
-                let range = self.base.max(ra.start) .. ra.end;
+                let range = self.base.max(ra.start)..ra.end;
                 self.base = ra.end;
                 let _ = self.sa.next();
-                Some((range, Some(*va) .. None))
+                Some((range, Some(*va)..None))
             }
             // done
             (None, None) => None,
@@ -292,104 +284,83 @@ mod test {
 
     #[test]
     fn sane_good() {
-        let rs = RangedStates::from_slice(
-            &[(1 .. 4, 9u8), (4 .. 5, 9)],
-        );
+        let rs = RangedStates::from_slice(&[(1..4, 9u8), (4..5, 9)]);
         rs.check_sanity();
     }
 
     #[test]
     #[should_panic]
     fn sane_empty() {
-        let rs = RangedStates::from_slice(
-            &[(1 .. 4, 9u8), (5 .. 5, 9)],
-        );
+        let rs = RangedStates::from_slice(&[(1..4, 9u8), (5..5, 9)]);
         rs.check_sanity();
     }
 
     #[test]
     #[should_panic]
     fn sane_intersect() {
-        let rs = RangedStates::from_slice(
-            &[(1 .. 4, 9u8), (3 .. 5, 9)],
-        );
+        let rs = RangedStates::from_slice(&[(1..4, 9u8), (3..5, 9)]);
         rs.check_sanity();
     }
 
     #[test]
     fn coalesce() {
-        let mut rs = RangedStates::from_slice(
-            &[(1 .. 4, 9u8), (4 .. 5, 9), (5 .. 7, 1), (8 .. 9, 1)],
-        );
+        let mut rs = RangedStates::from_slice(&[(1..4, 9u8), (4..5, 9), (5..7, 1), (8..9, 1)]);
         rs.coalesce();
         rs.check_sanity();
-        assert_eq!(
-            rs.ranges.as_slice(),
-            &[(1 .. 5, 9), (5 .. 7, 1), (8 .. 9, 1),]
-        );
+        assert_eq!(rs.ranges.as_slice(), &[(1..5, 9), (5..7, 1), (8..9, 1),]);
     }
 
     #[test]
     fn query() {
-        let rs = RangedStates::from_slice(
-            &[(1 .. 4, 1u8), (5 .. 7, 2)],
-        );
-        assert_eq!(rs.query(&(0 .. 1), |v| *v), None);
-        assert_eq!(rs.query(&(1 .. 3), |v| *v), Some(Ok(1)));
-        assert_eq!(rs.query(&(1 .. 6), |v| *v), Some(Err(())));
+        let rs = RangedStates::from_slice(&[(1..4, 1u8), (5..7, 2)]);
+        assert_eq!(rs.query(&(0..1), |v| *v), None);
+        assert_eq!(rs.query(&(1..3), |v| *v), Some(Ok(1)));
+        assert_eq!(rs.query(&(1..6), |v| *v), Some(Err(())));
     }
 
     #[test]
     fn isolate() {
-        let rs = RangedStates::from_slice(
-            &[(1 .. 4, 9u8), (4 .. 5, 9), (5 .. 7, 1), (8 .. 9, 1)],
-        );
-        assert_eq!(&rs.sanely_isolated(4 .. 5, 0), &[(4 .. 5, 9u8),]);
+        let rs = RangedStates::from_slice(&[(1..4, 9u8), (4..5, 9), (5..7, 1), (8..9, 1)]);
+        assert_eq!(&rs.sanely_isolated(4..5, 0), &[(4..5, 9u8),]);
         assert_eq!(
-            &rs.sanely_isolated(0 .. 6, 0),
-            &[(0 .. 1, 0), (1 .. 4, 9u8), (4 .. 5, 9), (5 .. 6, 1),]
+            &rs.sanely_isolated(0..6, 0),
+            &[(0..1, 0), (1..4, 9u8), (4..5, 9), (5..6, 1),]
         );
+        assert_eq!(&rs.sanely_isolated(8..10, 1), &[(8..9, 1), (9..10, 1),]);
         assert_eq!(
-            &rs.sanely_isolated(8 .. 10, 1),
-            &[(8 .. 9, 1), (9 .. 10, 1),]
-        );
-        assert_eq!(
-            &rs.sanely_isolated(6 .. 9, 0),
-            &[(6 .. 7, 1), (7 .. 8, 0), (8 .. 9, 1),]
+            &rs.sanely_isolated(6..9, 0),
+            &[(6..7, 1), (7..8, 0), (8..9, 1),]
         );
     }
 
     #[test]
     fn merge_same() {
         assert_eq!(
-            &easy_merge(&[(1 .. 4, 0u8),], &[(1 .. 4, 2u8),],),
-            &[(1 .. 4, Some(0) .. Some(2)),]
+            &easy_merge(&[(1..4, 0u8),], &[(1..4, 2u8),],),
+            &[(1..4, Some(0)..Some(2)),]
         );
     }
 
     #[test]
     fn merge_empty() {
         assert_eq!(
-            &easy_merge(&[(1 .. 2, 0u8),], &[],),
-            &[(1 .. 2, Some(0) .. None),]
+            &easy_merge(&[(1..2, 0u8),], &[],),
+            &[(1..2, Some(0)..None),]
         );
         assert_eq!(
-            &easy_merge(&[], &[(3 .. 4, 1u8),],),
-            &[(3 .. 4, None .. Some(1)),]
+            &easy_merge(&[], &[(3..4, 1u8),],),
+            &[(3..4, None..Some(1)),]
         );
     }
 
     #[test]
     fn merge_separate() {
         assert_eq!(
-            &easy_merge(
-                &[(1 .. 2, 0u8), (5 .. 6, 1u8),],
-                &[(2 .. 4, 2u8),],
-            ),
+            &easy_merge(&[(1..2, 0u8), (5..6, 1u8),], &[(2..4, 2u8),],),
             &[
-                (1 .. 2, Some(0) .. None),
-                (2 .. 4, None .. Some(2)),
-                (5 .. 6, Some(1) .. None),
+                (1..2, Some(0)..None),
+                (2..4, None..Some(2)),
+                (5..6, Some(1)..None),
             ]
         );
     }
@@ -397,37 +368,31 @@ mod test {
     #[test]
     fn merge_subset() {
         assert_eq!(
-            &easy_merge(
-                &[(1 .. 6, 0u8),],
-                &[(2 .. 4, 2u8),],
-            ),
+            &easy_merge(&[(1..6, 0u8),], &[(2..4, 2u8),],),
             &[
-                (1 .. 2, Some(0) .. None),
-                (2 .. 4, Some(0) .. Some(2)),
-                (4 .. 6, Some(0) .. None),
+                (1..2, Some(0)..None),
+                (2..4, Some(0)..Some(2)),
+                (4..6, Some(0)..None),
             ]
         );
         assert_eq!(
-            &easy_merge(&[(2 .. 4, 0u8),], &[(1 .. 4, 2u8),],),
-            &[(1 .. 2, None .. Some(2)), (2 .. 4, Some(0) .. Some(2)),]
+            &easy_merge(&[(2..4, 0u8),], &[(1..4, 2u8),],),
+            &[(1..2, None..Some(2)), (2..4, Some(0)..Some(2)),]
         );
     }
 
     #[test]
     fn merge_all() {
         assert_eq!(
-            &easy_merge(
-                &[(1 .. 4, 0u8), (5 .. 8, 1u8),],
-                &[(2 .. 6, 2u8), (7 .. 9, 3u8),],
-            ),
+            &easy_merge(&[(1..4, 0u8), (5..8, 1u8),], &[(2..6, 2u8), (7..9, 3u8),],),
             &[
-                (1 .. 2, Some(0) .. None),
-                (2 .. 4, Some(0) .. Some(2)),
-                (4 .. 5, None .. Some(2)),
-                (5 .. 6, Some(1) .. Some(2)),
-                (6 .. 7, Some(1) .. None),
-                (7 .. 8, Some(1) .. Some(3)),
-                (8 .. 9, None .. Some(3)),
+                (1..2, Some(0)..None),
+                (2..4, Some(0)..Some(2)),
+                (4..5, None..Some(2)),
+                (5..6, Some(1)..Some(2)),
+                (6..7, Some(1)..None),
+                (7..8, Some(1)..Some(3)),
+                (8..9, None..Some(3)),
             ]
         );
     }

wgpu-core/src/track/texture.rs

@@ -5,12 +5,11 @@
 use super::{range::RangedStates, PendingTransition, ResourceState, Unit};
 use crate::{device::MAX_MIP_LEVELS, id::TextureId};
 
-use wgt::TextureUsage;
 use arrayvec::ArrayVec;
+use wgt::TextureUsage;
 
 use std::{iter, ops::Range};
 
-
 //TODO: store `hal::image::State` here to avoid extra conversions
 type PlaneStates = RangedStates<hal::image::Layer, Unit<TextureUsage>>;
 
@@ -40,13 +39,10 @@ impl TextureState {
         debug_assert_eq!(range.levels.start, 0);
         TextureState {
             mips: iter::repeat_with(|| {
-                    PlaneStates::from_range(
-                        0 .. range.layers.end,
-                        Unit::new(TextureUsage::UNINITIALIZED),
-                    )
-                })
-                .take(range.levels.end as usize)
-                .collect(),
+                PlaneStates::from_range(0..range.layers.end, Unit::new(TextureUsage::UNINITIALIZED))
+            })
+            .take(range.levels.end as usize)
+            .collect(),
             full: true,
         }
     }
@@ -69,7 +65,7 @@ impl ResourceState for TextureState {
         }
         let mip_start = num_levels.min(selector.levels.start as usize);
         let mip_end = num_levels.min(selector.levels.end as usize);
-        for mip in self.mips[mip_start .. mip_end].iter() {
+        for mip in self.mips[mip_start..mip_end].iter() {
             match mip.query(&selector.layers, |unit| unit.last) {
                 None => {}
                 Some(Ok(usage)) if result == Some(usage) => {}
@@ -96,8 +92,7 @@ impl ResourceState for TextureState {
                 self.mips.push(PlaneStates::empty());
             }
         }
-        for (mip_id, mip) in self.mips
-            [selector.levels.start as usize .. selector.levels.end as usize]
+        for (mip_id, mip) in self.mips[selector.levels.start as usize..selector.levels.end as usize]
             .iter_mut()
             .enumerate()
         {
@@ -115,10 +110,10 @@ impl ResourceState for TextureState {
                     id,
                     selector: hal::image::SubresourceRange {
                         aspects: hal::format::Aspects::empty(),
-                        levels: level .. level + 1,
+                        levels: level..level + 1,
                         layers: range.clone(),
                     },
-                    usage: unit.last .. usage,
+                    usage: unit.last..usage,
                 };
 
                 unit.last = match output {
@@ -175,9 +170,7 @@ impl ResourceState for TextureState {
                         end: Some(end),
                     } => {
                         let to_usage = end.port();
-                        if start.last == to_usage
-                            && TextureUsage::ORDERED.contains(to_usage)
-                        {
+                        if start.last == to_usage && TextureUsage::ORDERED.contains(to_usage) {
                             Unit {
                                 first: start.first,
                                 last: end.last,
@@ -191,19 +184,17 @@ impl ResourceState for TextureState {
                                 id,
                                 selector: hal::image::SubresourceRange {
                                     aspects: hal::format::Aspects::empty(),
-                                    levels: level .. level + 1,
+                                    levels: level..level + 1,
                                     layers: layers.clone(),
                                 },
-                                usage: start.last .. to_usage,
+                                usage: start.last..to_usage,
                             };
 
                             match output {
-                                None => {
-                                    Unit {
-                                        first: start.first,
-                                        last: pending.collapse()?,
-                                    }
-                                }
+                                None => Unit {
+                                    first: start.first,
+                                    last: pending.collapse()?,
+                                },
                                 Some(ref mut out) => {
                                     out.push(pending);
                                     Unit {
@@ -229,7 +220,6 @@ impl ResourceState for TextureState {
     }
 }
 
-
 #[cfg(test)]
 mod test {
     //TODO: change() and merge() tests
@@ -242,16 +232,16 @@ mod test {
         let mut ts = TextureState::default();
         ts.mips.push(PlaneStates::empty());
         ts.mips.push(PlaneStates::from_slice(&[
-            (1 .. 3, Unit::new(TextureUsage::SAMPLED)),
-            (3 .. 5, Unit::new(TextureUsage::SAMPLED)),
-            (5 .. 6, Unit::new(TextureUsage::STORAGE)),
+            (1..3, Unit::new(TextureUsage::SAMPLED)),
+            (3..5, Unit::new(TextureUsage::SAMPLED)),
+            (5..6, Unit::new(TextureUsage::STORAGE)),
         ]));
 
         assert_eq!(
             ts.query(SubresourceRange {
                 aspects: Aspects::COLOR,
-                levels: 1 .. 2,
-                layers: 2 .. 5,
+                levels: 1..2,
+                layers: 2..5,
             }),
             // level 1 matches
             Some(TextureUsage::SAMPLED),
@@ -259,8 +249,8 @@ mod test {
         assert_eq!(
             ts.query(SubresourceRange {
                 aspects: Aspects::COLOR,
-                levels: 0 .. 2,
-                layers: 2 .. 5,
+                levels: 0..2,
+                layers: 2..5,
             }),
             // level 0 is empty, level 1 matches
             Some(TextureUsage::SAMPLED),
@@ -268,8 +258,8 @@ mod test {
         assert_eq!(
             ts.query(SubresourceRange {
                 aspects: Aspects::COLOR,
-                levels: 1 .. 2,
-                layers: 1 .. 5,
+                levels: 1..2,
+                layers: 1..5,
             }),
             // level 1 matches with gaps
             Some(TextureUsage::SAMPLED),
@@ -277,8 +267,8 @@ mod test {
         assert_eq!(
             ts.query(SubresourceRange {
                 aspects: Aspects::COLOR,
-                levels: 1 .. 2,
-                layers: 4 .. 6,
+                levels: 1..2,
+                layers: 4..6,
             }),
             // level 1 doesn't match
             None,

wgpu-native/src/command.rs

@@ -4,14 +4,10 @@
 
 use crate::GLOBAL;
 
-pub use core::command::{
-    compute_ffi::*,
-    render_ffi::*,
-};
+pub use core::command::{compute_ffi::*, render_ffi::*};
 
 use core::{gfx_select, id};
 
-
 #[no_mangle]
 pub extern "C" fn wgpu_command_encoder_finish(
     encoder_id: id::CommandEncoderId,
@@ -80,7 +76,6 @@ pub extern "C" fn wgpu_command_encoder_copy_texture_to_texture(
         copy_size))
 }
 
-
 /// # Safety
 ///
 /// This function is unsafe because improper use may lead to memory

wgpu-native/src/device.rs

@@ -4,8 +4,8 @@
 
 use crate::GLOBAL;
 
-use wgt::{BackendBit, DeviceDescriptor, Limits};
 use core::{gfx_select, hub::Token, id};
+use wgt::{BackendBit, DeviceDescriptor, Limits};
 
 use std::{marker::PhantomData, slice};
 
@@ -30,13 +30,12 @@ pub fn wgpu_create_surface(raw_handle: raw_window_handle::RawWindowHandle) -> id
         },
         #[cfg(target_os = "macos")]
         Rwh::MacOS(h) => {
-            let ns_view =
-                if h.ns_view.is_null() {
-                    let ns_window = h.ns_window as *mut Object;
-                    unsafe { msg_send![ns_window, contentView] }
-                } else {
-                    h.ns_view
-                };
+            let ns_view = if h.ns_view.is_null() {
+                let ns_window = h.ns_window as *mut Object;
+                unsafe { msg_send![ns_window, contentView] }
+            } else {
+                h.ns_view
+            };
             core::instance::Surface {
                 #[cfg(feature = "vulkan-portability")]
                 vulkan: instance
@@ -47,7 +46,7 @@ pub fn wgpu_create_surface(raw_handle: raw_window_handle::RawWindowHandle) -> id
                     .metal
                     .create_surface_from_nsview(ns_view, cfg!(debug_assertions)),
             }
-        },
+        }
         #[cfg(all(unix, not(target_os = "ios"), not(target_os = "macos")))]
         Rwh::Xlib(h) => core::instance::Surface {
             vulkan: instance
@@ -105,7 +104,8 @@ pub extern "C" fn wgpu_create_surface_from_wayland(
 ) -> id::SurfaceId {
     use raw_window_handle::unix::WaylandHandle;
     wgpu_create_surface(raw_window_handle::RawWindowHandle::Wayland(WaylandHandle {
-        surface, display,
+        surface,
+        display,
         ..WaylandHandle::empty()
     }))
 }
@@ -184,10 +184,7 @@ pub extern "C" fn wgpu_adapter_destroy(adapter_id: id::AdapterId) {
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_device_get_limits(
-    _device_id: id::DeviceId,
-    limits: &mut Limits,
-) {
+pub extern "C" fn wgpu_device_get_limits(_device_id: id::DeviceId, limits: &mut Limits) {
     *limits = Limits::default(); // TODO
 }
 
@@ -209,7 +206,8 @@ pub unsafe extern "C" fn wgpu_device_create_buffer_mapped(
     desc: &wgt::BufferDescriptor,
     mapped_ptr_out: *mut *mut u8,
 ) -> id::BufferId {
-    let (id, ptr) = gfx_select!(device_id => GLOBAL.device_create_buffer_mapped(device_id, desc, PhantomData));
+    let (id, ptr) =
+        gfx_select!(device_id => GLOBAL.device_create_buffer_mapped(device_id, desc, PhantomData));
     *mapped_ptr_out = ptr;
     id
 }
@@ -329,8 +327,7 @@ pub unsafe extern "C" fn wgpu_queue_submit(
     command_buffers: *const id::CommandBufferId,
     command_buffers_length: usize,
 ) {
-    let command_buffer_ids =
-        slice::from_raw_parts(command_buffers, command_buffers_length);
+    let command_buffer_ids = slice::from_raw_parts(command_buffers, command_buffers_length);
     gfx_select!(queue_id => GLOBAL.queue_submit(queue_id, command_buffer_ids))
 }
 
@@ -377,10 +374,7 @@ pub extern "C" fn wgpu_buffer_map_read_async(
     callback: core::device::BufferMapReadCallback,
     userdata: *mut u8,
 ) {
-    let operation = core::resource::BufferMapOperation::Read {
-        callback,
-        userdata,
-    };
+    let operation = core::resource::BufferMapOperation::Read { callback, userdata };
 
     gfx_select!(buffer_id => GLOBAL.buffer_map_async(buffer_id, wgt::BufferUsage::MAP_READ, start .. start + size, operation))
 }
@@ -393,10 +387,7 @@ pub extern "C" fn wgpu_buffer_map_write_async(
     callback: core::device::BufferMapWriteCallback,
     userdata: *mut u8,
 ) {
-    let operation = core::resource::BufferMapOperation::Write {
-        callback,
-        userdata,
-    };
+    let operation = core::resource::BufferMapOperation::Write { callback, userdata };
 
     gfx_select!(buffer_id => GLOBAL.buffer_map_async(buffer_id, wgt::BufferUsage::MAP_WRITE, start .. start + size, operation))
 }
@@ -411,9 +402,7 @@ pub extern "C" fn wgpu_swap_chain_get_next_texture(
     swap_chain_id: id::SwapChainId,
 ) -> core::swap_chain::SwapChainOutput {
     gfx_select!(swap_chain_id => GLOBAL.swap_chain_get_next_texture(swap_chain_id, PhantomData))
-        .unwrap_or(core::swap_chain::SwapChainOutput {
-            view_id: None,
-        })
+        .unwrap_or(core::swap_chain::SwapChainOutput { view_id: None })
 }
 
 #[no_mangle]

wgpu-remote/src/identity.rs

@@ -4,7 +4,6 @@
 
 use core::id;
 
-
 pub type FactoryParam = *mut std::ffi::c_void;
 
 #[derive(Debug)]
@@ -14,7 +13,9 @@ pub struct IdentityRecycler<I> {
     kind: &'static str,
 }
 
-impl<I: id::TypedId + Clone + std::fmt::Debug> core::hub::IdentityHandler<I> for IdentityRecycler<I> {
+impl<I: id::TypedId + Clone + std::fmt::Debug> core::hub::IdentityHandler<I>
+    for IdentityRecycler<I>
+{
     type Input = I;
     fn process(&self, id: I, _backend: wgt::Backend) -> I {
         log::debug!("process {} {:?}", self.kind, id);

wgpu-remote/src/lib.rs

@@ -2,17 +2,11 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use core::{
-    hub::IdentityManager,
-    id,
-};
+use core::{hub::IdentityManager, id};
 
 use wgt::Backend;
 
-pub use core::command::{
-    compute_ffi::*,
-    render_ffi::*,
-};
+pub use core::command::{compute_ffi::*, render_ffi::*};
 
 use parking_lot::Mutex;
 
@@ -21,7 +15,6 @@ use std::{ptr, slice};
 pub mod identity;
 pub mod server;
 
-
 #[derive(Debug, Default)]
 struct IdentityHub {
     adapters: IdentityManager,
@@ -136,7 +129,10 @@ pub extern "C" fn wgpu_client_kill_adapter_id(client: &Client, id: id::AdapterId
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_make_device_id(client: &Client, adapter_id: id::AdapterId) -> id::DeviceId {
+pub extern "C" fn wgpu_client_make_device_id(
+    client: &Client,
+    adapter_id: id::AdapterId,
+) -> id::DeviceId {
     let backend = adapter_id.backend();
     client
         .identities
@@ -157,7 +153,10 @@ pub extern "C" fn wgpu_client_kill_device_id(client: &Client, id: id::DeviceId)
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_make_buffer_id(client: &Client, device_id: id::DeviceId) -> id::BufferId {
+pub extern "C" fn wgpu_client_make_buffer_id(
+    client: &Client,
+    device_id: id::DeviceId,
+) -> id::BufferId {
     let backend = device_id.backend();
     client
         .identities
@@ -178,7 +177,10 @@ pub extern "C" fn wgpu_client_kill_buffer_id(client: &Client, id: id::BufferId)
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_make_texture_id(client: &Client, device_id: id::DeviceId) -> id::TextureId {
+pub extern "C" fn wgpu_client_make_texture_id(
+    client: &Client,
+    device_id: id::DeviceId,
+) -> id::TextureId {
     let backend = device_id.backend();
     client
         .identities
@@ -189,10 +191,7 @@ pub extern "C" fn wgpu_client_make_texture_id(client: &Client, device_id: id::De
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_texture_id(
-    client: &Client,
-    id: id::TextureId,
-) {
+pub extern "C" fn wgpu_client_kill_texture_id(client: &Client, id: id::TextureId) {
     client
         .identities
         .lock()
@@ -201,9 +200,11 @@ pub extern "C" fn wgpu_client_kill_texture_id(
         .free(id)
 }
 
-
 #[no_mangle]
-pub extern "C" fn wgpu_client_make_texture_view_id(client: &Client, device_id: id::DeviceId) -> id::TextureViewId {
+pub extern "C" fn wgpu_client_make_texture_view_id(
+    client: &Client,
+    device_id: id::DeviceId,
+) -> id::TextureViewId {
     let backend = device_id.backend();
     client
         .identities
@@ -214,10 +215,7 @@ pub extern "C" fn wgpu_client_make_texture_view_id(client: &Client, device_id: i
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_texture_view_id(
-    client: &Client,
-    id: id::TextureViewId,
-) {
+pub extern "C" fn wgpu_client_kill_texture_view_id(client: &Client, id: id::TextureViewId) {
     client
         .identities
         .lock()
@@ -227,7 +225,10 @@ pub extern "C" fn wgpu_client_kill_texture_view_id(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_make_sampler_id(client: &Client, device_id: id::DeviceId) -> id::SamplerId {
+pub extern "C" fn wgpu_client_make_sampler_id(
+    client: &Client,
+    device_id: id::DeviceId,
+) -> id::SamplerId {
     let backend = device_id.backend();
     client
         .identities
@@ -238,10 +239,7 @@ pub extern "C" fn wgpu_client_make_sampler_id(client: &Client, device_id: id::De
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_sampler_id(
-    client: &Client,
-    id: id::SamplerId,
-) {
+pub extern "C" fn wgpu_client_kill_sampler_id(client: &Client, id: id::SamplerId) {
     client
         .identities
         .lock()
@@ -265,10 +263,7 @@ pub extern "C" fn wgpu_client_make_encoder_id(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_encoder_id(
-    client: &Client,
-    id: id::CommandEncoderId,
-) {
+pub extern "C" fn wgpu_client_kill_encoder_id(client: &Client, id: id::CommandEncoderId) {
     client
         .identities
         .lock()
@@ -345,10 +340,7 @@ pub extern "C" fn wgpu_client_make_pipeline_layout_id(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_pipeline_layout_id(
-    client: &Client,
-    id: id::PipelineLayoutId,
-) {
+pub extern "C" fn wgpu_client_kill_pipeline_layout_id(client: &Client, id: id::PipelineLayoutId) {
     client
         .identities
         .lock()
@@ -372,10 +364,7 @@ pub extern "C" fn wgpu_client_make_bind_group_id(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_bind_group_id(
-    client: &Client,
-    id: id::BindGroupId,
-) {
+pub extern "C" fn wgpu_client_kill_bind_group_id(client: &Client, id: id::BindGroupId) {
     client
         .identities
         .lock()
@@ -399,10 +388,7 @@ pub extern "C" fn wgpu_client_make_shader_module_id(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_shader_module_id(
-    client: &Client,
-    id: id::ShaderModuleId,
-) {
+pub extern "C" fn wgpu_client_kill_shader_module_id(client: &Client, id: id::ShaderModuleId) {
     client
         .identities
         .lock()
@@ -426,10 +412,7 @@ pub extern "C" fn wgpu_client_make_compute_pipeline_id(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_compute_pipeline_id(
-    client: &Client,
-    id: id::ComputePipelineId,
-) {
+pub extern "C" fn wgpu_client_kill_compute_pipeline_id(client: &Client, id: id::ComputePipelineId) {
     client
         .identities
         .lock()
@@ -453,10 +436,7 @@ pub extern "C" fn wgpu_client_make_render_pipeline_id(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_client_kill_render_pipeline_id(
-    client: &Client,
-    id: id::RenderPipelineId,
-) {
+pub extern "C" fn wgpu_client_kill_render_pipeline_id(client: &Client, id: id::RenderPipelineId) {
     client
         .identities
         .lock()

wgpu-remote/src/server.rs

@@ -8,7 +8,6 @@ use core::{gfx_select, id};
 
 use std::slice;
 
-
 pub type Global = core::hub::Global<IdentityRecyclerFactory>;
 
 #[no_mangle]
@@ -71,10 +70,7 @@ pub extern "C" fn wgpu_server_adapter_request_device(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_server_adapter_destroy(
-    global: &Global,
-    adapter_id: id::AdapterId,
-) {
+pub extern "C" fn wgpu_server_adapter_destroy(global: &Global, adapter_id: id::AdapterId) {
     gfx_select!(adapter_id => global.adapter_destroy(adapter_id))
 }
 
@@ -123,11 +119,8 @@ pub extern "C" fn wgpu_server_buffer_map_read(
     callback: core::device::BufferMapReadCallback,
     userdata: *mut u8,
 ) {
-    let operation = core::resource::BufferMapOperation::Read {
-        callback,
-        userdata,   
-    };
-    
+    let operation = core::resource::BufferMapOperation::Read { callback, userdata };
+
     gfx_select!(buffer_id => global.buffer_map_async(
         buffer_id,
         wgt::BufferUsage::MAP_READ,
@@ -161,10 +154,7 @@ pub extern "C" fn wgpu_server_encoder_finish(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_server_encoder_destroy(
-    global: &Global,
-    self_id: id::CommandEncoderId,
-) {
+pub extern "C" fn wgpu_server_encoder_destroy(global: &Global, self_id: id::CommandEncoderId) {
     gfx_select!(self_id => global.command_encoder_destroy(self_id));
 }
 
@@ -320,10 +310,7 @@ pub extern "C" fn wgpu_server_device_create_bind_group(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_server_bind_group_destroy(
-    global: &Global,
-    self_id: id::BindGroupId,
-) {
+pub extern "C" fn wgpu_server_bind_group_destroy(global: &Global, self_id: id::BindGroupId) {
     gfx_select!(self_id => global.bind_group_destroy(self_id));
 }
 
@@ -338,10 +325,7 @@ pub extern "C" fn wgpu_server_device_create_shader_module(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_server_shader_module_destroy(
-    global: &Global,
-    self_id: id::ShaderModuleId,
-) {
+pub extern "C" fn wgpu_server_shader_module_destroy(global: &Global, self_id: id::ShaderModuleId) {
     gfx_select!(self_id => global.shader_module_destroy(self_id));
 }
 
@@ -402,18 +386,12 @@ pub extern "C" fn wgpu_server_texture_create_view(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_server_texture_destroy(
-    global: &Global,
-    self_id: id::TextureId,
-) {
+pub extern "C" fn wgpu_server_texture_destroy(global: &Global, self_id: id::TextureId) {
     gfx_select!(self_id => global.texture_destroy(self_id));
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_server_texture_view_destroy(
-    global: &Global,
-    self_id: id::TextureViewId,
-) {
+pub extern "C" fn wgpu_server_texture_view_destroy(global: &Global, self_id: id::TextureViewId) {
     gfx_select!(self_id => global.texture_view_destroy(self_id));
 }
 
@@ -428,9 +406,6 @@ pub extern "C" fn wgpu_server_device_create_sampler(
 }
 
 #[no_mangle]
-pub extern "C" fn wgpu_server_sampler_destroy(
-    global: &Global,
-    self_id: id::SamplerId,
-) {
+pub extern "C" fn wgpu_server_sampler_destroy(global: &Global, self_id: id::SamplerId) {
     gfx_select!(self_id => global.sampler_destroy(self_id));
 }

wgpu-types/src/lib.rs

@@ -2,11 +2,11 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use std::{io, slice, ptr};
-#[cfg(feature = "serde")]
-use serde::{Serialize, Deserialize};
 #[cfg(feature = "peek-poke")]
-use peek_poke::{PeekPoke};
+use peek_poke::PeekPoke;
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+use std::{io, ptr, slice};
 
 #[repr(u8)]
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
@@ -557,9 +557,7 @@ pub struct CommandEncoderDescriptor {
 
 impl Default for CommandEncoderDescriptor {
     fn default() -> CommandEncoderDescriptor {
-        CommandEncoderDescriptor {
-            label: ptr::null(),
-        }
+        CommandEncoderDescriptor { label: ptr::null() }
     }
 }
 
@@ -731,11 +729,7 @@ pub struct Origin3d {
 }
 
 impl Origin3d {
-    pub const ZERO: Self = Origin3d {
-        x: 0,
-        y: 0,
-        z: 0,
-    };
+    pub const ZERO: Self = Origin3d { x: 0, y: 0, z: 0 };
 }
 
 impl Default for Origin3d {