webgpu: Divide message code into separate files (#32700)

* Spilt webgpu ipc messages even more

* Add license to mod.rs

* file docs

components/webgpu/ipc_messages/mod.rs

@@ -0,0 +1,7 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+pub mod recv;
+pub mod to_dom;
+pub mod to_script;

components/webgpu/ipc_messages/recv.rs

@@ -2,7 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-//! IPC massages that are send/received from GPU DOM objects.
+//! IPC messages that are received in wgpu thread
+//! (usually from script thread more specifically from dom objects)
 
 use std::borrow::Cow;
 
@@ -26,77 +27,11 @@ use wgc::resource::{
     BufferDescriptor, SamplerDescriptor, TextureDescriptor, TextureViewDescriptor,
 };
 use wgpu_core::command::{RenderPassColorAttachment, RenderPassDepthStencilAttachment};
-use wgpu_core::pipeline::CreateShaderModuleError;
 pub use {wgpu_core as wgc, wgpu_types as wgt};
 
 use crate::identity::*;
 use crate::render_commands::RenderCommand;
-use crate::{Error, ErrorFilter, PopError, WebGPU, PRESENTATION_BUFFER_COUNT};
+use crate::{Error, ErrorFilter, WebGPUResponseResult, PRESENTATION_BUFFER_COUNT};
-
-#[derive(Clone, Debug, Default, Deserialize, Serialize)]
-pub struct ShaderCompilationInfo {
-    pub line_number: u64,
-    pub line_pos: u64,
-    pub offset: u64,
-    pub length: u64,
-    pub message: String,
-}
-
-impl ShaderCompilationInfo {
-    pub fn from(error: &CreateShaderModuleError, source: &str) -> Self {
-        let location = match error {
-            CreateShaderModuleError::Parsing(e) => e.inner.location(source),
-            CreateShaderModuleError::Validation(e) => e.inner.location(source),
-            _ => None,
-        };
-
-        if let Some(location) = location {
-            // Naga reports locations in UTF-8 code units, but spec requires location in UTF-16 code units
-            // Based on https://searchfox.org/mozilla-central/rev/5b037d9c6ecdb0729f39ad519f0b867d80a92aad/gfx/wgpu_bindings/src/server.rs#353
-            fn len_utf16(s: &str) -> u64 {
-                s.chars().map(|c| c.len_utf16() as u64).sum()
-            }
-            let start = location.offset as usize;
-            let end = start + location.length as usize;
-            let line_start = source[0..start].rfind('\n').map(|pos| pos + 1).unwrap_or(0);
-            Self {
-                line_number: location.line_number as u64,
-                line_pos: len_utf16(&source[line_start..start]) + 1,
-                offset: len_utf16(&source[0..start]),
-                length: len_utf16(&source[start..end]),
-                message: error.to_string(),
-            }
-        } else {
-            Self {
-                message: error.to_string(),
-                ..Default::default()
-            }
-        }
-    }
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[allow(clippy::large_enum_variant)]
-pub enum WebGPUResponse {
-    RequestAdapter {
-        adapter_info: wgt::AdapterInfo,
-        adapter_id: WebGPUAdapter,
-        features: wgt::Features,
-        limits: wgt::Limits,
-        channel: WebGPU,
-    },
-    RequestDevice {
-        device_id: WebGPUDevice,
-        queue_id: WebGPUQueue,
-        descriptor: wgt::DeviceDescriptor<Option<String>>,
-    },
-    BufferMapAsync(IpcSharedMemory),
-    SubmittedWorkDone,
-    PoppedErrorScope(Result<Option<Error>, PopError>),
-    CompilationInfo(Option<ShaderCompilationInfo>),
-}
-
-pub type WebGPUResponseResult = Result<WebGPUResponse, String>;
 
 #[derive(Debug, Deserialize, Serialize)]
 pub enum WebGPURequest {

components/webgpu/ipc_messages/to_dom.rs

@@ -0,0 +1,78 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+//! IPC messages that are send to WebGPU DOM objects.
+
+use ipc_channel::ipc::IpcSharedMemory;
+use serde::{Deserialize, Serialize};
+use wgc::pipeline::CreateShaderModuleError;
+pub use {wgpu_core as wgc, wgpu_types as wgt};
+
+use crate::identity::*;
+use crate::{Error, PopError, WebGPU};
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+pub struct ShaderCompilationInfo {
+    pub line_number: u64,
+    pub line_pos: u64,
+    pub offset: u64,
+    pub length: u64,
+    pub message: String,
+}
+
+impl ShaderCompilationInfo {
+    pub fn from(error: &CreateShaderModuleError, source: &str) -> Self {
+        let location = match error {
+            CreateShaderModuleError::Parsing(e) => e.inner.location(source),
+            CreateShaderModuleError::Validation(e) => e.inner.location(source),
+            _ => None,
+        };
+
+        if let Some(location) = location {
+            // Naga reports locations in UTF-8 code units, but spec requires location in UTF-16 code units
+            // Based on https://searchfox.org/mozilla-central/rev/5b037d9c6ecdb0729f39ad519f0b867d80a92aad/gfx/wgpu_bindings/src/server.rs#353
+            fn len_utf16(s: &str) -> u64 {
+                s.chars().map(|c| c.len_utf16() as u64).sum()
+            }
+            let start = location.offset as usize;
+            let end = start + location.length as usize;
+            let line_start = source[0..start].rfind('\n').map(|pos| pos + 1).unwrap_or(0);
+            Self {
+                line_number: location.line_number as u64,
+                line_pos: len_utf16(&source[line_start..start]) + 1,
+                offset: len_utf16(&source[0..start]),
+                length: len_utf16(&source[start..end]),
+                message: error.to_string(),
+            }
+        } else {
+            Self {
+                message: error.to_string(),
+                ..Default::default()
+            }
+        }
+    }
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[allow(clippy::large_enum_variant)]
+pub enum WebGPUResponse {
+    RequestAdapter {
+        adapter_info: wgt::AdapterInfo,
+        adapter_id: WebGPUAdapter,
+        features: wgt::Features,
+        limits: wgt::Limits,
+        channel: WebGPU,
+    },
+    RequestDevice {
+        device_id: WebGPUDevice,
+        queue_id: WebGPUQueue,
+        descriptor: wgt::DeviceDescriptor<Option<String>>,
+    },
+    BufferMapAsync(IpcSharedMemory),
+    SubmittedWorkDone,
+    PoppedErrorScope(Result<Option<Error>, PopError>),
+    CompilationInfo(Option<ShaderCompilationInfo>),
+}
+
+pub type WebGPUResponseResult = Result<WebGPUResponse, String>;

components/webgpu/ipc_messages/to_script.rs

@@ -2,7 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-//! IPC massages that are send to script thread (global scope).
+//! IPC messages that are send to script thread.
 
 use base::id::PipelineId;
 use serde::{Deserialize, Serialize};

components/webgpu/lib.rs

@@ -28,13 +28,13 @@ use webrender_traits::{
 };
 use wgc::id;
 
-mod dom_messages;
 mod gpu_error;
+mod ipc_messages;
 mod render_commands;
-mod script_messages;
-pub use dom_messages::*;
 pub use identity::*;
-pub use script_messages::*;
+pub use ipc_messages::recv::*;
+pub use ipc_messages::to_dom::*;
+pub use ipc_messages::to_script::*;
 pub use wgpu_thread::PRESENTATION_BUFFER_COUNT;
 
 #[derive(Clone, Debug, Deserialize, Serialize)]