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Move adapter selection into separate function

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This commit is contained in:
Joshua Groves 2019-11-07 21:36:48 -06:00
parent 2b1ce5d6d9
commit 7f25b8c318
1 changed files with 25 additions and 20 deletions
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45
wgpu-native/src/instance.rs
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@ -312,6 +312,15 @@ pub fn request_adapter_async(
callback: RequestAdapterCallback,
userdata: *mut c_void,
) {
let adapter = pick_adapter(global, desc, input_ids);
callback(adapter.as_ref().map_or(&AdapterId::ERROR, |x| x as *const _), userdata);
}
fn pick_adapter(
global: &Global,
desc: &RequestAdapterOptions,
input_ids: &[Input<AdapterId>],
) -> Option<AdapterId> {
let instance = &global.instance;
let mut device_types = Vec::new();
@ -326,16 +335,6 @@ pub fn request_adapter_async(
None
}
};
#[cfg(not(feature = "local"))]
let pick = |_output, input_maybe: Option<AdapterId>| {
let adapter = input_maybe.as_ref();
callback(adapter.map_or(&AdapterId::ERROR, |x| x as *const _), userdata);
};
#[cfg(feature = "local")]
let pick = |output: Option<AdapterId>, _input_maybe| {
let adapter = output.as_ref();
callback(adapter.map_or(&AdapterId::ERROR, |x| x as *const _), userdata);
};
let id_vulkan = find_input(Backend::Vulkan);
let id_metal = find_input(Backend::Metal);
@ -382,8 +381,7 @@ pub fn request_adapter_async(
if device_types.is_empty() {
log::warn!("No adapters are available!");
pick(None, None);
return;
return None;
}
let (mut integrated, mut discrete, mut virt, mut other) = (None, None, None, None);
@ -410,6 +408,16 @@ pub fn request_adapter_async(
PowerPreference::LowPower => integrated.or(other).or(discrete).or(virt),
PowerPreference::HighPerformance => discrete.or(other).or(integrated).or(virt),
};
#[allow(unused_variables)]
let local_or_remote_id = |local_id, remote_id| {
#[cfg(not(feature = "local"))]
let id = remote_id;
#[cfg(feature = "local")]
let id = Some(local_id);
id
};
let mut token = Token::root();
let mut selected = preferred_gpu.unwrap_or(0);
@ -428,8 +436,7 @@ pub fn request_adapter_async(
adapter,
&mut token,
);
pick(Some(id_out), id_vulkan);
return;
return local_or_remote_id(id_out, id_vulkan);
}
selected -= adapters_vk.len();
}
@ -445,8 +452,7 @@ pub fn request_adapter_async(
adapter,
&mut token,
);
pick(Some(id_out), id_metal);
return;
return local_or_remote_id(id_out, id_metal);
}
selected -= adapters_mtl.len();
}
@ -462,8 +468,7 @@ pub fn request_adapter_async(
adapter,
&mut token,
);
pick(Some(id_out), id_dx12);
return;
return local_or_remote_id(id_out, id_dx12);
}
selected -= adapters_dx12.len();
if selected < adapters_dx11.len() {
@ -476,11 +481,11 @@ pub fn request_adapter_async(
adapter,
&mut token,
);
pick(Some(id_out), id_dx11);
return;
return local_or_remote_id(id_out, id_dx11);
}
selected -= adapters_dx11.len();
}
let _ = (selected, id_vulkan, id_metal, id_dx12, id_dx11);
unreachable!()
}