use dom_struct::dom_struct;
use webgpu::wgpu::command::{render_ffi as wgpu_render, RenderPass};
use webgpu::{wgt, WebGPU, WebGPURequest};
use super::bindings::codegen::Bindings::WebGPUBinding::GPUIndexFormat;
use super::bindings::error::Fallible;
use crate::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::codegen::Bindings::WebGPUBinding::{
GPUColor, GPURenderPassEncoderMethods,
};
use crate::dom::bindings::num::Finite;
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::gpurenderbundle::GPURenderBundle;
use crate::dom::gpurenderpipeline::GPURenderPipeline;
#[dom_struct]
pub struct GPURenderPassEncoder {
reflector_: Reflector,
#[ignore_malloc_size_of = "defined in webgpu"]
#[no_trace]
channel: WebGPU,
label: DomRefCell<USVString>,
#[ignore_malloc_size_of = "defined in wgpu-core"]
#[no_trace]
render_pass: DomRefCell<Option<RenderPass>>,
command_encoder: Dom<GPUCommandEncoder>,
}
impl GPURenderPassEncoder {
fn new_inherited(
channel: WebGPU,
render_pass: Option<RenderPass>,
parent: &GPUCommandEncoder,
label: USVString,
) -> Self {
Self {
channel,
reflector_: Reflector::new(),
label: DomRefCell::new(label),
render_pass: DomRefCell::new(render_pass),
command_encoder: Dom::from_ref(parent),
}
}
pub fn new(
global: &GlobalScope,
channel: WebGPU,
render_pass: Option<RenderPass>,
parent: &GPUCommandEncoder,
label: USVString,
) -> DomRoot<Self> {
reflect_dom_object(
Box::new(GPURenderPassEncoder::new_inherited(
channel,
render_pass,
parent,
label,
)),
global,
)
}
}
impl GPURenderPassEncoderMethods for GPURenderPassEncoder {
fn Label(&self) -> USVString {
self.label.borrow().clone()
}
fn SetLabel(&self, value: USVString) {
*self.label.borrow_mut() = value;
}
#[allow(unsafe_code)]
fn SetBindGroup(&self, index: u32, bind_group: &GPUBindGroup, dynamic_offsets: Vec<u32>) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
unsafe {
wgpu_render::wgpu_render_pass_set_bind_group(
render_pass,
index,
bind_group.id().0,
dynamic_offsets.as_ptr(),
dynamic_offsets.len(),
)
};
}
}
fn SetViewport(
&self,
x: Finite<f32>,
y: Finite<f32>,
width: Finite<f32>,
height: Finite<f32>,
min_depth: Finite<f32>,
max_depth: Finite<f32>,
) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_set_viewport(
render_pass,
*x,
*y,
*width,
*height,
*min_depth,
*max_depth,
);
}
}
fn SetScissorRect(&self, x: u32, y: u32, width: u32, height: u32) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_set_scissor_rect(render_pass, x, y, width, height);
}
}
fn SetBlendConstant(&self, color: GPUColor) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
let colors = match color {
GPUColor::GPUColorDict(d) => wgt::Color {
r: *d.r,
g: *d.g,
b: *d.b,
a: *d.a,
},
GPUColor::DoubleSequence(mut s) => {
if s.len() < 3 {
s.resize(3, Finite::wrap(0.0f64));
}
s.resize(4, Finite::wrap(1.0f64));
wgt::Color {
r: *s[0],
g: *s[1],
b: *s[2],
a: *s[3],
}
},
};
wgpu_render::wgpu_render_pass_set_blend_constant(render_pass, &colors);
}
}
fn SetStencilReference(&self, reference: u32) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_set_stencil_reference(render_pass, reference);
}
}
fn End(&self) -> Fallible<()> {
let render_pass = self.render_pass.borrow_mut().take();
self.channel
.0
.send((
None,
WebGPURequest::RunRenderPass {
command_encoder_id: self.command_encoder.id().0,
render_pass,
},
))
.expect("Failed to send RunRenderPass");
self.command_encoder.set_state(
GPUCommandEncoderState::Open,
GPUCommandEncoderState::EncodingRenderPass,
);
Ok(())
}
fn SetPipeline(&self, pipeline: &GPURenderPipeline) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_set_pipeline(render_pass, pipeline.id().0);
}
}
fn SetIndexBuffer(
&self,
buffer: &GPUBuffer,
index_format: GPUIndexFormat,
offset: u64,
size: u64,
) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_set_index_buffer(
render_pass,
buffer.id().0,
match index_format {
GPUIndexFormat::Uint16 => wgt::IndexFormat::Uint16,
GPUIndexFormat::Uint32 => wgt::IndexFormat::Uint32,
},
offset,
wgt::BufferSize::new(size),
);
}
}
fn SetVertexBuffer(&self, slot: u32, buffer: &GPUBuffer, offset: u64, size: u64) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_set_vertex_buffer(
render_pass,
slot,
buffer.id().0,
offset,
wgt::BufferSize::new(size),
);
}
}
fn Draw(&self, vertex_count: u32, instance_count: u32, first_vertex: u32, first_instance: u32) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_draw(
render_pass,
vertex_count,
instance_count,
first_vertex,
first_instance,
);
}
}
fn DrawIndexed(
&self,
index_count: u32,
instance_count: u32,
first_index: u32,
base_vertex: i32,
first_instance: u32,
) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_draw_indexed(
render_pass,
index_count,
instance_count,
first_index,
base_vertex,
first_instance,
);
}
}
fn DrawIndirect(&self, indirect_buffer: &GPUBuffer, indirect_offset: u64) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_draw_indirect(
render_pass,
indirect_buffer.id().0,
indirect_offset,
);
}
}
fn DrawIndexedIndirect(&self, indirect_buffer: &GPUBuffer, indirect_offset: u64) {
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
wgpu_render::wgpu_render_pass_draw_indexed_indirect(
render_pass,
indirect_buffer.id().0,
indirect_offset,
);
}
}
#[allow(unsafe_code)]
fn ExecuteBundles(&self, bundles: Vec<DomRoot<GPURenderBundle>>) {
let bundle_ids = bundles.iter().map(|b| b.id().0).collect::<Vec<_>>();
if let Some(render_pass) = self.render_pass.borrow_mut().as_mut() {
unsafe {
wgpu_render::wgpu_render_pass_execute_bundles(
render_pass,
bundle_ids.as_ptr(),
bundle_ids.len(),
)
};
}
}
}