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https://github.com/gfx-rs/wgpu.git
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fbe005f11a
This will help users determine whether the problem is: * a backend is not statically enabled * a backend is not dynamically enabled * no drivers or physical adapters are present for that backend (further distinction would be useful here) * no adapters met the required criteria There are deficiencies in the reporting of WebGPU vs. WebGL support. Those would best be fixed by also fixing the mutual exclusion of those backends.
81 lines
2.6 KiB
Rust
81 lines
2.6 KiB
Rust
mod request_adapter_error {
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fn id(backends: wgpu::Backends) -> wgpu::InstanceDescriptor {
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wgpu::InstanceDescriptor {
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backends,
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flags: wgpu::InstanceFlags::default(),
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backend_options: wgpu::BackendOptions::default(),
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}
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}
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fn adapter_error(desc: &wgpu::InstanceDescriptor) -> String {
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let instance = wgpu::Instance::new(desc);
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pollster::block_on(instance.request_adapter(&wgpu::RequestAdapterOptions {
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power_preference: wgpu::PowerPreference::default(),
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force_fallback_adapter: false,
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compatible_surface: None,
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}))
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.unwrap_err()
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.to_string()
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}
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#[test]
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fn no_backends_requested() {
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assert_eq!(
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adapter_error(&id(wgpu::Backends::empty())),
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"No suitable graphics adapter found; \
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noop not requested, \
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vulkan not requested, \
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metal not requested, \
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dx12 not requested, \
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gl not requested, \
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webgpu not requested"
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);
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}
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/// This test nominally tests the noop backend, but it also exercises the logic for other backends
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/// that fail to return any adapter.
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#[test]
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fn noop_not_enabled() {
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assert_eq!(
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adapter_error(&id(wgpu::Backends::NOOP)),
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"No suitable graphics adapter found; \
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noop not explicitly enabled, \
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vulkan not requested, \
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metal not requested, \
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dx12 not requested, \
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gl not requested, \
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webgpu not requested"
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);
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}
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#[test]
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fn no_compiled_support() {
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// Whichever platform we are on, try asking for a backend that definitely will be
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// cfged out regardless of feature flags. (Not that these tests run on wasm at all yet.)
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#[cfg(target_family = "wasm")]
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assert_eq!(
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adapter_error(&id(wgpu::Backends::METAL)),
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"No suitable graphics adapter found; \
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noop not requested, \
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vulkan not requested, \
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metal support not compiled in, \
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dx12 not requested, \
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gl not requested, \
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webgpu not requested"
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);
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#[cfg(not(target_family = "wasm"))]
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assert_eq!(
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adapter_error(&id(wgpu::Backends::BROWSER_WEBGPU)),
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"No suitable graphics adapter found; \
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noop not requested, \
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vulkan not requested, \
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metal not requested, \
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dx12 not requested, \
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gl not requested, \
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webgpu support not compiled in"
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);
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}
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}
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