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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/. */
//! Error scopes and GPUError types
use std::fmt;
use serde::{Deserialize, Serialize};
use wgpu_core::device::DeviceError;
/// <https://www.w3.org/TR/webgpu/#gpu-error-scope>
#[derive(Clone, Debug, Eq, Hash, PartialEq)]
pub struct ErrorScope {
pub errors: Vec<Error>,
pub filter: ErrorFilter,
}
impl ErrorScope {
pub fn new(filter: ErrorFilter) -> Self {
Self {
filter,
errors: Vec::new(),
}
}
}
/// <https://www.w3.org/TR/webgpu/#enumdef-gpuerrorfilter>
#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
pub enum ErrorFilter {
Validation,
OutOfMemory,
Internal,
}
/// <https://www.w3.org/TR/webgpu/#gpuerror>
#[derive(Clone, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
pub enum Error {
Validation(String),
OutOfMemory(String),
Internal(String),
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
None
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str(self.message())
}
}
impl Error {
pub fn filter(&self) -> ErrorFilter {
match self {
Error::Validation(_) => ErrorFilter::Validation,
Error::OutOfMemory(_) => ErrorFilter::OutOfMemory,
Error::Internal(_) => ErrorFilter::Internal,
}
}
pub fn message(&self) -> &str {
match self {
Error::Validation(m) => m,
Error::OutOfMemory(m) => m,
Error::Internal(m) => m,
}
}
// TODO: labels
// based on https://github.com/gfx-rs/wgpu/blob/trunk/wgpu/src/backend/wgpu_core.rs#L289
pub fn from_error<E: std::error::Error + 'static>(error: E) -> Self {
let mut source_opt: Option<&(dyn std::error::Error + 'static)> = Some(&error);
while let Some(source) = source_opt {
if let Some(DeviceError::OutOfMemory) = source.downcast_ref::<DeviceError>() {
return Self::OutOfMemory(error.to_string());
}
source_opt = source.source();
}
// TODO: This hack is needed because there are
// multiple OutOfMemory error variant in wgpu-core
// and even upstream does not handle them correctly
if format!("{error:?}").contains("OutOfMemory") {
return Self::OutOfMemory(error.to_string());
}
Self::Validation(error.to_string())
}
}
#[derive(Clone, Copy, Debug, Deserialize, Serialize)]
pub enum PopError {
Lost,
Empty,
}
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