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/* 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/. */
use crate::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::codegen::Bindings::GPUComputePassEncoderBinding::GPUComputePassEncoderMethods;
use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::bindings::str::USVString;
use crate::dom::globalscope::GlobalScope;
use crate::dom::gpubindgroup::GPUBindGroup;
use crate::dom::gpubuffer::GPUBuffer;
use crate::dom::gpucommandencoder::{GPUCommandEncoder, GPUCommandEncoderState};
use crate::dom::gpucomputepipeline::GPUComputePipeline;
use dom_struct::dom_struct;
use webgpu::{
wgpu::command::{compute_ffi as wgpu_comp, ComputePass},
WebGPU, WebGPURequest,
};
#[dom_struct]
pub struct GPUComputePassEncoder {
reflector_: Reflector,
#[ignore_malloc_size_of = "defined in webgpu"]
#[no_trace]
channel: WebGPU,
label: DomRefCell<Option<USVString>>,
#[ignore_malloc_size_of = "defined in wgpu-core"]
#[no_trace]
compute_pass: DomRefCell<Option<ComputePass>>,
command_encoder: Dom<GPUCommandEncoder>,
}
impl GPUComputePassEncoder {
fn new_inherited(
channel: WebGPU,
parent: &GPUCommandEncoder,
compute_pass: Option<ComputePass>,
label: Option<USVString>,
) -> Self {
Self {
channel,
reflector_: Reflector::new(),
label: DomRefCell::new(label),
compute_pass: DomRefCell::new(compute_pass),
command_encoder: Dom::from_ref(parent),
}
}
pub fn new(
global: &GlobalScope,
channel: WebGPU,
parent: &GPUCommandEncoder,
compute_pass: Option<ComputePass>,
label: Option<USVString>,
) -> DomRoot<Self> {
reflect_dom_object(
Box::new(GPUComputePassEncoder::new_inherited(
channel,
parent,
compute_pass,
label,
)),
global,
)
}
}
impl GPUComputePassEncoderMethods for GPUComputePassEncoder {
/// https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label
fn GetLabel(&self) -> Option<USVString> {
self.label.borrow().clone()
}
/// https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label
fn SetLabel(&self, value: Option<USVString>) {
*self.label.borrow_mut() = value;
}
/// https://gpuweb.github.io/gpuweb/#dom-gpucomputepassencoder-dispatch
fn Dispatch(&self, x: u32, y: u32, z: u32) {
if let Some(compute_pass) = self.compute_pass.borrow_mut().as_mut() {
wgpu_comp::wgpu_compute_pass_dispatch(compute_pass, x, y, z);
}
}
/// https://gpuweb.github.io/gpuweb/#dom-gpucomputepassencoder-dispatchindirect
fn DispatchIndirect(&self, indirect_buffer: &GPUBuffer, indirect_offset: u64) {
if let Some(compute_pass) = self.compute_pass.borrow_mut().as_mut() {
wgpu_comp::wgpu_compute_pass_dispatch_indirect(
compute_pass,
indirect_buffer.id().0,
indirect_offset,
);
}
}
/// https://gpuweb.github.io/gpuweb/#dom-gpurenderpassencoder-endpass
fn EndPass(&self) {
let compute_pass = self.compute_pass.borrow_mut().take();
self.channel
.0
.send((
None,
WebGPURequest::RunComputePass {
command_encoder_id: self.command_encoder.id().0,
compute_pass,
},
))
.expect("Failed to send RunComputePass");
self.command_encoder.set_state(
GPUCommandEncoderState::Open,
GPUCommandEncoderState::EncodingComputePass,
);
}
/// https://gpuweb.github.io/gpuweb/#dom-gpuprogrammablepassencoder-setbindgroup
#[allow(unsafe_code)]
fn SetBindGroup(&self, index: u32, bind_group: &GPUBindGroup, dynamic_offsets: Vec<u32>) {
if let Some(compute_pass) = self.compute_pass.borrow_mut().as_mut() {
unsafe {
wgpu_comp::wgpu_compute_pass_set_bind_group(
compute_pass,
index,
bind_group.id().0,
dynamic_offsets.as_ptr(),
dynamic_offsets.len(),
)
};
}
}
/// https://gpuweb.github.io/gpuweb/#dom-gpucomputepassencoder-setpipeline
fn SetPipeline(&self, pipeline: &GPUComputePipeline) {
if let Some(compute_pass) = self.compute_pass.borrow_mut().as_mut() {
wgpu_comp::wgpu_compute_pass_set_pipeline(compute_pass, pipeline.id().0);
}
}
}
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