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[wgpu-hal] require a Surface to be passed to Instance.enumerate_adapters() on WebGL2

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Also makes wgpu's `enumerate_adapters()` native only.
This commit is contained in:
teoxoy 2024-07-03 13:25:29 +02:00 committed by Teodor Tanasoaia
parent 37f283688a
commit 7910fd8059
15 changed files with 79 additions and 52 deletions
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10
CHANGELOG.md
View File

@ -129,6 +129,16 @@ Platform support:
By @atlv24 in [#5383](https://github.com/gfx-rs/wgpu/pull/5383)
#### A compatible surface is now required for `request_adapter()` on WebGL2 + `enumerate_adapters()` is now native only.
When targeting WebGL2, it has always been the case that a surface had to be created before calling `request_adapter()`.
We now make this requirement explicit.
Calling `enumerate_adapters()` when targeting WebGPU used to return an empty `Vec` and since we now require users
to pass a compatible surface when targeting WebGL2, having `enumerate_adapters()` doesn't make sense.
By @teoxoy in [#5901](https://github.com/gfx-rs/wgpu/pull/5901)
### New features
#### Vulkan

19
tests/src/init.rs
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@ -41,15 +41,17 @@ pub fn initialize_instance() -> Instance {
pub async fn initialize_adapter(adapter_index: usize) -> (Instance, Adapter, Option<SurfaceGuard>) {
let instance = initialize_instance();
#[allow(unused_variables)]
let _surface: wgpu::Surface;
let surface: Option<wgpu::Surface>;
let surface_guard: Option<SurfaceGuard>;
// Create a canvas iff we need a WebGL2RenderingContext to have a working device.
#[allow(unused_assignments)]
// Create a canvas if we need a WebGL2RenderingContext to have a working device.
#[cfg(not(all(
target_arch = "wasm32",
any(target_os = "emscripten", feature = "webgl")
)))]
{
surface = None;
surface_guard = None;
}
#[cfg(all(
@ -60,15 +62,17 @@ pub async fn initialize_adapter(adapter_index: usize) -> (Instance, Adapter, Opt
// On wasm, append a canvas to the document body for initializing the adapter
let canvas = initialize_html_canvas();
_surface = instance
surface = Some(
instance
.create_surface(wgpu::SurfaceTarget::Canvas(canvas.clone()))
.expect("could not create surface from canvas");
.expect("could not create surface from canvas"),
);
surface_guard = Some(SurfaceGuard { canvas });
}
cfg_if::cfg_if! {
if #[cfg(any(not(target_arch = "wasm32"), feature = "webgl"))] {
if #[cfg(not(target_arch = "wasm32"))] {
let adapter_iter = instance.enumerate_adapters(wgpu::Backends::all());
let adapter_count = adapter_iter.len();
let adapter = adapter_iter.into_iter()
@ -76,7 +80,10 @@ pub async fn initialize_adapter(adapter_index: usize) -> (Instance, Adapter, Opt
.unwrap_or_else(|| panic!("Tried to get index {adapter_index} adapter, but adapter list was only {adapter_count} long. Is .gpuconfig out of date?"));
} else {
assert_eq!(adapter_index, 0);
let adapter = instance.request_adapter(&wgpu::RequestAdapterOptions::default()).await.unwrap();
let adapter = instance.request_adapter(&wgpu::RequestAdapterOptions {
compatible_surface: surface.as_ref(),
..Default::default()
}).await.unwrap();
}
}

6
wgpu-core/src/instance.rs
View File

@ -717,7 +717,7 @@ impl Global {
profiling::scope!("enumerating", &*format!("{:?}", A::VARIANT));
let hub = HalApi::hub(self);
let hal_adapters = unsafe { inst.enumerate_adapters() };
let hal_adapters = unsafe { inst.enumerate_adapters(None) };
for raw in hal_adapters {
let adapter = Adapter::new(raw);
log::info!("Adapter {:?} {:?}", A::VARIANT, adapter.raw.info);
@ -796,7 +796,9 @@ impl Global {
let id = inputs.find(A::VARIANT);
match (id, instance) {
(Some(id), Some(inst)) => {
let mut adapters = unsafe { inst.enumerate_adapters() };
let compatible_hal_surface =
compatible_surface.and_then(|surface| A::surface_as_hal(surface));
let mut adapters = unsafe { inst.enumerate_adapters(compatible_hal_surface) };
if force_software {
adapters.retain(|exposed| exposed.info.device_type == wgt::DeviceType::Cpu);
}

2
wgpu-hal/examples/halmark/main.rs
View File

@ -111,7 +111,7 @@ impl<A: hal::Api> Example<A> {
};
let (adapter, capabilities) = unsafe {
let mut adapters = instance.enumerate_adapters();
let mut adapters = instance.enumerate_adapters(Some(&surface));
if adapters.is_empty() {
return Err("no adapters found".into());
}

2
wgpu-hal/examples/ray-traced-triangle/main.rs
View File

@ -237,7 +237,7 @@ impl<A: hal::Api> Example<A> {
};
let (adapter, features) = unsafe {
let mut adapters = instance.enumerate_adapters();
let mut adapters = instance.enumerate_adapters(Some(&surface));
if adapters.is_empty() {
panic!("No adapters found");
}

5
wgpu-hal/src/dx12/instance.rs
View File

@ -147,7 +147,10 @@ impl crate::Instance for super::Instance {
// just drop
}
unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<super::Api>> {
unsafe fn enumerate_adapters(
&self,
_surface_hint: Option<&super::Surface>,
) -> Vec<crate::ExposedAdapter<super::Api>> {
let adapters = auxil::dxgi::factory::enumerate_adapters(self.factory.clone());
adapters

5
wgpu-hal/src/empty.rs
View File

@ -54,7 +54,10 @@ impl crate::Instance for Context {
Ok(Context)
}
unsafe fn destroy_surface(&self, surface: Context) {}
unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<Api>> {
unsafe fn enumerate_adapters(
&self,
_surface_hint: Option<&Context>,
) -> Vec<crate::ExposedAdapter<Api>> {
Vec::new()
}
}

5
wgpu-hal/src/gles/egl.rs
View File

@ -1001,7 +1001,10 @@ impl crate::Instance for Instance {
unsafe fn destroy_surface(&self, _surface: Surface) {}
unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<super::Api>> {
unsafe fn enumerate_adapters(
&self,
_surface_hint: Option<&Surface>,
) -> Vec<crate::ExposedAdapter<super::Api>> {
let inner = self.inner.lock();
inner.egl.make_current();

38
wgpu-hal/src/gles/web.rs
View File

@ -24,10 +24,7 @@ impl AdapterContext {
}
#[derive(Debug)]
pub struct Instance {
/// Set when a canvas is provided, and used to implement [`Instance::enumerate_adapters()`].
webgl2_context: Mutex<Option<web_sys::WebGl2RenderingContext>>,
}
pub struct Instance;
impl Instance {
pub fn create_surface_from_canvas(
@ -85,10 +82,6 @@ impl Instance {
.dyn_into()
.expect("canvas context is not a WebGl2RenderingContext");
// It is not inconsistent to overwrite an existing context, because the only thing that
// `self.webgl2_context` is used for is producing the response to `enumerate_adapters()`.
*self.webgl2_context.lock() = Some(webgl2_context.clone());
Ok(Surface {
canvas,
webgl2_context,
@ -121,21 +114,22 @@ impl crate::Instance for Instance {
unsafe fn init(_desc: &crate::InstanceDescriptor) -> Result<Self, crate::InstanceError> {
profiling::scope!("Init OpenGL (WebGL) Backend");
Ok(Instance {
webgl2_context: Mutex::new(None),
})
Ok(Instance)
}
unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<super::Api>> {
let context_guard = self.webgl2_context.lock();
let gl = match *context_guard {
Some(ref webgl2_context) => glow::Context::from_webgl2_context(webgl2_context.clone()),
None => return Vec::new(),
};
unsafe fn enumerate_adapters(
&self,
surface_hint: Option<&Surface>,
) -> Vec<crate::ExposedAdapter<super::Api>> {
if let Some(surface_hint) = surface_hint {
let gl = glow::Context::from_webgl2_context(surface_hint.webgl2_context.clone());
unsafe { super::Adapter::expose(AdapterContext { glow_context: gl }) }
.into_iter()
.collect()
} else {
Vec::new()
}
}
unsafe fn create_surface(
@ -172,15 +166,7 @@ impl crate::Instance for Instance {
self.create_surface_from_canvas(canvas)
}
unsafe fn destroy_surface(&self, surface: Surface) {
let mut context_option_ref = self.webgl2_context.lock();
if let Some(context) = context_option_ref.as_ref() {
if context == &surface.webgl2_context {
*context_option_ref = None;
}
}
}
unsafe fn destroy_surface(&self, _surface: Surface) {}
}
#[derive(Debug)]

5
wgpu-hal/src/gles/wgl.rs
View File

@ -558,7 +558,10 @@ impl crate::Instance for Instance {
}
unsafe fn destroy_surface(&self, _surface: Surface) {}
unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<super::Api>> {
unsafe fn enumerate_adapters(
&self,
_surface_hint: Option<&Surface>,
) -> Vec<crate::ExposedAdapter<super::Api>> {
unsafe {
super::Adapter::expose(AdapterContext {
inner: self.inner.clone(),

6
wgpu-hal/src/lib.rs
View File

@ -447,7 +447,11 @@ pub trait Instance: Sized + WasmNotSendSync {
window_handle: raw_window_handle::RawWindowHandle,
) -> Result<<Self::A as Api>::Surface, InstanceError>;
unsafe fn destroy_surface(&self, surface: <Self::A as Api>::Surface);
unsafe fn enumerate_adapters(&self) -> Vec<ExposedAdapter<Self::A>>;
/// `surface_hint` is only used by the GLES backend targeting WebGL2
unsafe fn enumerate_adapters(
&self,
surface_hint: Option<&<Self::A as Api>::Surface>,
) -> Vec<ExposedAdapter<Self::A>>;
}
pub trait Surface: WasmNotSendSync {

5
wgpu-hal/src/metal/mod.rs
View File

@ -121,7 +121,10 @@ impl crate::Instance for Instance {
unsafe { surface.dispose() };
}
unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<Api>> {
unsafe fn enumerate_adapters(
&self,
_surface_hint: Option<&Surface>,
) -> Vec<crate::ExposedAdapter<Api>> {
let devices = metal::Device::all();
let mut adapters: Vec<crate::ExposedAdapter<Api>> = devices
.into_iter()

5
wgpu-hal/src/vulkan/instance.rs
View File

@ -884,7 +884,10 @@ impl crate::Instance for super::Instance {
unsafe { surface.functor.destroy_surface(surface.raw, None) };
}
unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<super::Api>> {
unsafe fn enumerate_adapters(
&self,
_surface_hint: Option<&super::Surface>,
) -> Vec<crate::ExposedAdapter<super::Api>> {
use crate::auxil::db;
let raw_devices = match unsafe { self.shared.raw.enumerate_physical_devices() } {

1
wgpu/src/backend/wgpu_core.rs
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@ -61,6 +61,7 @@ impl ContextWgpuCore {
Self(unsafe { wgc::global::Global::from_instance(core_instance) })
}
#[cfg(native)]
pub fn enumerate_adapters(&self, backends: wgt::Backends) -> Vec<wgc::id::AdapterId> {
self.0
.enumerate_adapters(wgc::instance::AdapterInputs::Mask(backends, |_| None))

9
wgpu/src/lib.rs
View File

@ -2369,13 +2369,10 @@ impl Instance {
/// Retrieves all available [`Adapter`]s that match the given [`Backends`].
///
/// Always returns an empty vector if the instance decided upon creation to
/// target WebGPU since adapter creation is always async on WebGPU.
///
/// # Arguments
///
/// - `backends` - Backends from which to enumerate adapters.
#[cfg(wgpu_core)]
#[cfg(native)]
pub fn enumerate_adapters(&self, backends: Backends) -> Vec<Adapter> {
let context = Arc::clone(&self.context);
self.context
@ -2391,7 +2388,7 @@ impl Instance {
})
.collect()
})
.unwrap_or_default()
.unwrap()
}
/// Retrieves an [`Adapter`] which matches the given [`RequestAdapterOptions`].
@ -2399,6 +2396,8 @@ impl Instance {
/// Some options are "soft", so treated as non-mandatory. Others are "hard".
///
/// If no adapters are found that suffice all the "hard" options, `None` is returned.
///
/// A `compatible_surface` is required when targeting WebGL2.
pub fn request_adapter(
&self,
options: &RequestAdapterOptions<'_, '_>,