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Add more logging to Instance::device_request_adapter. (#7786)

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Jim Blandy 2025-06-11 01:36:15 -07:00 committed by GitHub
parent 630905134b
commit 9046b439d7
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1 changed files with 10 additions and 1 deletions
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11
wgpu-core/src/instance.rs
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@ -446,14 +446,23 @@ impl Instance {
let mut backend_adapters =
unsafe { instance.enumerate_adapters(compatible_hal_surface) };
if backend_adapters.is_empty() {
log::debug!("enabled backend `{:?}` has no adapters", backend);
no_adapter_backends |= Backends::from(backend);
// by continuing, we avoid setting the further error bits below
continue;
}
if desc.force_fallback_adapter {
backend_adapters.retain(|exposed| exposed.info.device_type == wgt::DeviceType::Cpu);
log::debug!("Filtering `{backend:?}` for `force_fallback_adapter`");
backend_adapters.retain(|exposed| {
let keep = exposed.info.device_type == wgt::DeviceType::Cpu;
if !keep {
log::debug!("* Eliminating adapter `{}`", exposed.info.name);
}
keep
});
if backend_adapters.is_empty() {
log::debug!("* Backend `{:?}` has no fallback adapters", backend);
no_fallback_backends |= Backends::from(backend);
continue;
}