Black screen when using the Vulkan backend

[omer681]

The example works with WGPU_BACKEND=dx12, but shows a black screen when it uses Vulkan (which is the default for my system) on Windows.

Log:

ImageInfo {
    pixel_format: Rgb8,
    size: UVec2(
        553,
        289,
    ),
    stride: UVec2(
        3,
        1659,
    ),
}
[2022-10-14T16:58:13Z INFO  wgpu_core::instance] Adapter Vulkan AdapterInfo { name: "NVIDIA GeForce RTX 3070", vendor: 4318, device: 9348, device_type: DiscreteGpu, backend: Vulkan }
[2022-10-14T16:58:13Z INFO  wgpu_hal::vulkan::adapter] Private capabilities: PrivateCapabilities { flip_y_requires_shift: true, imageless_framebuffers: true, image_view_usage: true, timeline_semaphores: true, texture_d24: true, texture_d24_s8: true, can_present: true, non_coherent_map_mask: 63, robust_buffer_access: 
true, robust_image_access: true }
[2022-10-14T16:58:13Z INFO  naga::front::spv] Generated by 524298 version 10000
[2022-10-14T16:58:13Z WARN  naga::front::spv] Unknown decoration Block
[2022-10-14T16:58:13Z WARN  naga::front::spv] Unknown decoration Block
[2022-10-14T16:58:13Z INFO  naga::front::spv] Patching...
[2022-10-14T16:58:13Z INFO  naga::front::spv] Generated by 524298 version 10000
[2022-10-14T16:58:13Z WARN  naga::front::spv] Unknown decoration Block
[2022-10-14T16:58:13Z INFO  naga::front::spv] Patching...
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Created render pipeline Valid((0, 1, Vulkan)) with RenderPipelineDescriptor { label: Some("show-image-pipeline"), layout: Some((0, 1, Vulkan)), vertex: VertexState { stage: ProgrammableStageDescriptor { module: (0, 1, Vulkan), entry_point: "main" }, buffers: [] }, primitive: PrimitiveState { topology: TriangleList, strip_index_format: None, front_face: Cw, cull_mode: Some(Back), unclipped_depth: false, polygon_mode: Fill, conservative: false }, depth_stencil: None, multisample: MultisampleState { count: 1, mask: 18446744073709551615, alpha_to_coverage_enabled: false }, fragment: Some(FragmentState { stage: ProgrammableStageDescriptor { module: (1, 1, Vulkan), entry_point: "main" }, targets: [Some(ColorTargetState { format: Bgra8Unorm, blend: Some(BlendState { color: BlendComponent { src_factor: SrcAlpha, dst_factor: OneMinusSrcAlpha, operation: Add }, alpha: BlendComponent { src_factor: One, dst_factor: OneMinusSrcAlpha, operation: Add } }), write_mask: RED | GREEN | BLUE | ALPHA | COLOR | ALL })] }), multiview: None }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] configuring surface with SurfaceConfiguration { usage: RENDER_ATTACHMENT, format: Bgra8Unorm, width: 800, height: 600, present_mode: AutoVsync }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Automatically choosing presentation mode by rule AutoVsync. Chose Fifo
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Created buffer Valid((0, 1, Vulkan)) with BufferDescriptor { label: None, size: 64, usage: COPY_DST | UNIFORM, mapped_at_creation: true }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] configuring surface with SurfaceConfiguration { usage: RENDER_ATTACHMENT, format: Bgra8Unorm, width: 1858, height: 1020, present_mode: AutoVsync }
[2022-10-14T16:58:13Z WARN  wgpu_core::device] Requested size 1858x1020 is outside of the supported range: Extent3d { width: 800, height: 600, depth_or_array_layers: 1 }..=Extent3d { width: 800, height: 600, depth_or_array_layers: 1 }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Automatically choosing presentation mode by rule AutoVsync. Chose Fifo
[2022-10-14T16:58:13Z INFO  wgpu_core::device] configuring surface with SurfaceConfiguration { usage: RENDER_ATTACHMENT, format: Bgra8Unorm, width: 800, height: 600, present_mode: AutoVsync }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Automatically choosing presentation mode by rule AutoVsync. Chose Fifo
[2022-10-14T16:58:13Z INFO  wgpu_core::device] configuring surface with SurfaceConfiguration { usage: RENDER_ATTACHMENT, format: Bgra8Unorm, width: 800, height: 600, present_mode: AutoVsync }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Automatically choosing presentation mode by rule AutoVsync. Chose Fifo
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Created buffer Valid((1, 1, Vulkan)) with BufferDescriptor { label: Some("Untitled_uniforms_buffer"), size: 20, 
usage: UNIFORM, mapped_at_creation: true }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Created buffer Valid((2, 1, Vulkan)) with BufferDescriptor { label: Some("Untitled_image_buffer"), size: 479452, usage: STORAGE, mapped_at_creation: true }
[2022-10-14T16:58:13Z INFO  wgpu_core::device] Created buffer Valid((3, 1, Vulkan)) with BufferDescriptor { label: None, size: 64, usage: COPY_SRC, mapped_at_creation: true }