Properly check for hardware float support

[Am0g-us]

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cargo run --release
Finished release profile [optimized] target(s) in 0.79s
Running target/release/brush_bin
"sparse/0/cameras.bin" "sparse/0/images.bin"
[2024-10-26T16:15:28Z ERROR wgpu_core::device::global] Device::create_shader_module error:
Shader validation error:

[2024-10-26T16:15:28Z ERROR wgpu::backend::wgpu_core] Handling wgpu errors as fatal by default
thread 'async-std/runtime' panicked at /home/amongus/.cargo/git/checkouts/wgpu-f9afa33caa1e84c9/ffb4852/wgpu/src/backend/wgpu_core.rs:3411:5:
wgpu error: Validation Error

Caused by:
In Device::create_shader_module

Shader validation error:

  Type [12] '' is invalid
    Capability Capabilities(SHADER_FLT32_ATOMIC) is required

note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
"sparse/0/cameras.bin" "sparse/0/images.bin"
[2024-10-26T16:15:52Z ERROR wgpu_core::device::global] Device::create_shader_module error:
Shader validation error:

[2024-10-26T16:15:52Z ERROR wgpu::backend::wgpu_core] Handling wgpu errors as fatal by default
thread 'async-std/runtime' panicked at /home/amongus/.cargo/git/checkouts/wgpu-f9afa33caa1e84c9/ffb4852/wgpu/src/backend/wgpu_core.rs:3411:5:
wgpu error: Validation Error

Caused by:
In Device::create_shader_module

Shader validation error:

  Type [12] '' is invalid
    Capability Capabilities(SHADER_FLT32_ATOMIC) is required

---

My gpu is amd 6900 xt. Installed latest rocm and mesa drivers.

[ArthurBrussee]

Ah yes - I think that's the same as #6!

I've disabled hardware atomic floats for now, but should re-enable them soon with proper detection whether they are supported! Will leave this issue open until that's done.

[AsherJingkongChen]

I guess that it hardly works on AMD GPUs.
The Vulkan extension was originally contributed by NVIDIA's developers.

Accessibility issues of float atomic operations can be solved by atomic CAS loop on integer types. This can be handled in wgpu internals or by checking WgpuDeivce enabled features in runtime.

See gfx-rs/wgpu#6234