From 7cd14f97c9300357475e3e461fa57cbb7ec5bfec Mon Sep 17 00:00:00 2001
From: crowlKats <13135287+crowlKats@users.noreply.github.com>
Date: Mon, 1 Mar 2021 11:31:13 +0100
Subject: feat: WebGPU API (#7977)

Co-authored-by: Luca Casonato <lucacasonato@yahoo.com>
---
 op_crates/webgpu/queue.rs | 157 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 op_crates/webgpu/queue.rs

(limited to 'op_crates/webgpu/queue.rs')

diff --git a/op_crates/webgpu/queue.rs b/op_crates/webgpu/queue.rs
new file mode 100644
index 000000000..c141a3c45
--- /dev/null
+++ b/op_crates/webgpu/queue.rs
@@ -0,0 +1,157 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+
+use deno_core::error::bad_resource_id;
+use deno_core::error::AnyError;
+use deno_core::serde_json::json;
+use deno_core::serde_json::Value;
+use deno_core::OpState;
+use deno_core::ZeroCopyBuf;
+use serde::Deserialize;
+
+use super::error::WebGPUError;
+
+type WebGPUQueue = super::WebGPUDevice;
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct QueueSubmitArgs {
+  queue_rid: u32,
+  command_buffers: Vec<u32>,
+}
+
+pub fn op_webgpu_queue_submit(
+  state: &mut OpState,
+  args: QueueSubmitArgs,
+  _zero_copy: &mut [ZeroCopyBuf],
+) -> Result<Value, AnyError> {
+  let instance = state.borrow::<super::Instance>();
+  let queue_resource = state
+    .resource_table
+    .get::<WebGPUQueue>(args.queue_rid)
+    .ok_or_else(bad_resource_id)?;
+  let queue = queue_resource.0;
+
+  let mut ids = vec![];
+
+  for rid in args.command_buffers {
+    let buffer_resource = state
+      .resource_table
+      .get::<super::command_encoder::WebGPUCommandBuffer>(rid)
+      .ok_or_else(bad_resource_id)?;
+    ids.push(buffer_resource.0);
+  }
+
+  let maybe_err =
+    gfx_select!(queue => instance.queue_submit(queue, &ids)).err();
+
+  Ok(json!({ "err": maybe_err.map(WebGPUError::from) }))
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+struct GPUImageDataLayout {
+  offset: Option<u64>,
+  bytes_per_row: Option<u32>,
+  rows_per_image: Option<u32>,
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct QueueWriteBufferArgs {
+  queue_rid: u32,
+  buffer: u32,
+  buffer_offset: u64,
+  data_offset: usize,
+  size: Option<usize>,
+}
+
+pub fn op_webgpu_write_buffer(
+  state: &mut OpState,
+  args: QueueWriteBufferArgs,
+  zero_copy: &mut [ZeroCopyBuf],
+) -> Result<Value, AnyError> {
+  let instance = state.borrow::<super::Instance>();
+  let buffer_resource = state
+    .resource_table
+    .get::<super::buffer::WebGPUBuffer>(args.buffer)
+    .ok_or_else(bad_resource_id)?;
+  let buffer = buffer_resource.0;
+  let queue_resource = state
+    .resource_table
+    .get::<WebGPUQueue>(args.queue_rid)
+    .ok_or_else(bad_resource_id)?;
+  let queue = queue_resource.0;
+
+  let data = match args.size {
+    Some(size) => &zero_copy[0][args.data_offset..(args.data_offset + size)],
+    None => &zero_copy[0][args.data_offset..],
+  };
+  let maybe_err = gfx_select!(queue => instance.queue_write_buffer(
+    queue,
+    buffer,
+    args.buffer_offset,
+    data
+  ))
+  .err();
+
+  Ok(json!({ "err": maybe_err.map(WebGPUError::from) }))
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct QueueWriteTextureArgs {
+  queue_rid: u32,
+  destination: super::command_encoder::GPUImageCopyTexture,
+  data_layout: GPUImageDataLayout,
+  size: super::texture::GPUExtent3D,
+}
+
+pub fn op_webgpu_write_texture(
+  state: &mut OpState,
+  args: QueueWriteTextureArgs,
+  zero_copy: &mut [ZeroCopyBuf],
+) -> Result<Value, AnyError> {
+  let instance = state.borrow::<super::Instance>();
+  let texture_resource = state
+    .resource_table
+    .get::<super::texture::WebGPUTexture>(args.destination.texture)
+    .ok_or_else(bad_resource_id)?;
+  let queue_resource = state
+    .resource_table
+    .get::<WebGPUQueue>(args.queue_rid)
+    .ok_or_else(bad_resource_id)?;
+  let queue = queue_resource.0;
+
+  let destination = wgpu_core::command::TextureCopyView {
+    texture: texture_resource.0,
+    mip_level: args.destination.mip_level.unwrap_or(0),
+    origin: args
+      .destination
+      .origin
+      .map_or(Default::default(), |origin| wgpu_types::Origin3d {
+        x: origin.x.unwrap_or(0),
+        y: origin.y.unwrap_or(0),
+        z: origin.z.unwrap_or(0),
+      }),
+  };
+  let data_layout = wgpu_types::TextureDataLayout {
+    offset: args.data_layout.offset.unwrap_or(0),
+    bytes_per_row: args.data_layout.bytes_per_row.unwrap_or(0),
+    rows_per_image: args.data_layout.rows_per_image.unwrap_or(0),
+  };
+
+  let maybe_err = gfx_select!(queue => instance.queue_write_texture(
+    queue,
+    &destination,
+    &*zero_copy[0],
+    &data_layout,
+    &wgpu_types::Extent3d {
+      width: args.size.width.unwrap_or(1),
+      height: args.size.height.unwrap_or(1),
+      depth: args.size.depth.unwrap_or(1),
+    }
+  ))
+  .err();
+
+  Ok(json!({ "err": maybe_err.map(WebGPUError::from) }))
+}
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