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// 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::ResourceId;
use deno_core::ZeroCopyBuf;
use deno_core::{OpState, Resource};
use serde::Deserialize;
use std::borrow::Cow;
use super::error::WebGpuError;
pub(crate) struct WebGpuSampler(pub(crate) wgpu_core::id::SamplerId);
impl Resource for WebGpuSampler {
fn name(&self) -> Cow<str> {
"webGPUSampler".into()
}
}
fn serialize_address_mode(
address_mode: Option<String>,
) -> wgpu_types::AddressMode {
match address_mode {
Some(address_mode) => match address_mode.as_str() {
"clamp-to-edge" => wgpu_types::AddressMode::ClampToEdge,
"repeat" => wgpu_types::AddressMode::Repeat,
"mirror-repeat" => wgpu_types::AddressMode::MirrorRepeat,
_ => unreachable!(),
},
None => wgpu_types::AddressMode::ClampToEdge,
}
}
fn serialize_filter_mode(
filter_mode: Option<String>,
) -> wgpu_types::FilterMode {
match filter_mode {
Some(filter_mode) => match filter_mode.as_str() {
"nearest" => wgpu_types::FilterMode::Nearest,
"linear" => wgpu_types::FilterMode::Linear,
_ => unreachable!(),
},
None => wgpu_types::FilterMode::Nearest,
}
}
pub fn serialize_compare_function(
compare: &str,
) -> wgpu_types::CompareFunction {
match compare {
"never" => wgpu_types::CompareFunction::Never,
"less" => wgpu_types::CompareFunction::Less,
"equal" => wgpu_types::CompareFunction::Equal,
"less-equal" => wgpu_types::CompareFunction::LessEqual,
"greater" => wgpu_types::CompareFunction::Greater,
"not-equal" => wgpu_types::CompareFunction::NotEqual,
"greater-equal" => wgpu_types::CompareFunction::GreaterEqual,
"always" => wgpu_types::CompareFunction::Always,
_ => unreachable!(),
}
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct CreateSamplerArgs {
device_rid: ResourceId,
label: Option<String>,
address_mode_u: Option<String>,
address_mode_v: Option<String>,
address_mode_w: Option<String>,
mag_filter: Option<String>,
min_filter: Option<String>,
mipmap_filter: Option<String>,
lod_min_clamp: Option<f32>,
lod_max_clamp: Option<f32>,
compare: Option<String>,
max_anisotropy: Option<u8>,
}
pub fn op_webgpu_create_sampler(
state: &mut OpState,
args: CreateSamplerArgs,
_zero_copy: &mut [ZeroCopyBuf],
) -> Result<Value, AnyError> {
let instance = state.borrow::<super::Instance>();
let device_resource = state
.resource_table
.get::<super::WebGpuDevice>(args.device_rid)
.ok_or_else(bad_resource_id)?;
let device = device_resource.0;
let descriptor = wgpu_core::resource::SamplerDescriptor {
label: args.label.map(Cow::from),
address_modes: [
serialize_address_mode(args.address_mode_u),
serialize_address_mode(args.address_mode_v),
serialize_address_mode(args.address_mode_w),
],
mag_filter: serialize_filter_mode(args.mag_filter),
min_filter: serialize_filter_mode(args.min_filter),
mipmap_filter: serialize_filter_mode(args.mipmap_filter),
lod_min_clamp: args.lod_min_clamp.unwrap_or(0.0),
lod_max_clamp: args.lod_max_clamp.unwrap_or(
wgpu_core::resource::SamplerDescriptor::default().lod_max_clamp,
),
compare: args
.compare
.as_ref()
.map(|compare| serialize_compare_function(compare)),
anisotropy_clamp: std::num::NonZeroU8::new(
args.max_anisotropy.unwrap_or(0),
),
border_color: None, // native-only
};
let (sampler, maybe_err) = gfx_select!(device => instance.device_create_sampler(
device,
&descriptor,
std::marker::PhantomData
));
let rid = state.resource_table.add(WebGpuSampler(sampler));
Ok(json!({
"rid": rid,
"err": maybe_err.map(WebGpuError::from)
}))
}
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