Loading the Intel Vulkan driver on Windows (igvk64.dll) crashes the process
with STATUS_ACCESS_VIOLATION (#4). The app leaves Vulkan out on Intel, but
the tests use wgpu's defaults, so on such a machine `cargo test` dies in the
first GPU test (ui-egui's background_redraw, adjust_preview_gpu, ...).
WGPU_BACKEND=dx12 avoids it for the kittest harnesses, but seven tests and
four benches built their instance with wgpu::Instance::default(), which takes
every backend and ignores the environment. They now use
InstanceDescriptor::new_without_display_handle_from_env(): the same defaults
with WGPU_BACKEND and friends applied, so nothing changes where it is unset.
Document the workaround in docs/development.md and the testkit driver notes.
Kushagra Sharma
2e716f93b2