Rx shows black screen on i3

[SoptikHa2]

I installed rx with --features vulkan. After start, I get:

[2019-10-01T17:19:38Z WARN  rx::platform::backend] glfw: content scale isn't uniform: 0.7791411 x 0.7807377

The only thing I see is a black screen that I can't interact with (the -vv log is on pastebin).

I tried to interact with Rx nonetheless, following ReadMe instructions in hope that I'll be able to save a file to test if it works, but I get OutOfMemory before I get chance to do :w test.png.

I use i3, dual GPU intel/nvidia. Installed vulkan packages are

vulkan-icd-loader 1.1.121-1
vulkan-mesa-layer 19.1.7-1

Do you have any idea how to work around this?

[cloudhead]

Strange. Can you try enabling vsync in rx?

set vsync = on

In your ~/.config/rx/init.rx config file.

[cloudhead]

It's also strange that your content scale is < 1.0 - that could be the problem, I've never seen this before. You could try to set scale = 2.0 also inside your config file and see if that changes anything.

[SoptikHa2]

set vsync = on didn't do any difference, or at least I didn't notice anything. set scale = 2.0 changed it a bit. Instead of black screen, the screen isn't painted at all in the place where the application window is, the last thing I had opened in that space (eg terminal that I launched rx from) is drawn in there.

Also changing scale doesn't change the warn message that content scale isn't uniform, it still displays the 0.77... x 0.78..., not sure if it should've changed.

[cloudhead]

Can you check if with vsync on, the out of memory issue is gone when you try to save?

Also can you try running vulkaninfo and also installing vulkan-utils?

The only other thing I could propose is to build from source with the winit backend to see if it makes any difference.

[cloudhead]

Another question, is your OOM issue this: https://github.com/cloudhead/rx/issues/1 ? If not, can you post the output?

[SoptikHa2]

I don't think so, or at least it looks like it failed at different location. I was fast enough and managed to save the image, but it crashed almost immediately afterwards. I had vsync = on and I got this:

[2019-10-02T18:14:13Z WARN  rx::platform::backend] glfw: content scale isn't uniform: 0.7791411 x 0.7807377
[2019-10-02T18:14:13Z INFO  rx::session] rx v0.2.0
[2019-10-02T18:14:24Z INFO  rx::session] "test.png" 4096 pixels written
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: OutOfMemory(OutOfHostMemory)', src/libcore/result.rs:1084:5
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:47
   3: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:36
   4: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:200
   5: std::panicking::default_hook
             at src/libstd/panicking.rs:214
   6: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:477
   7: std::panicking::continue_panic_fmt
             at src/libstd/panicking.rs:384
   8: rust_begin_unwind
             at src/libstd/panicking.rs:311
   9: core::panicking::panic_fmt
             at src/libcore/panicking.rs:85
  10: core::result::unwrap_failed
             at src/libcore/result.rs:1084
  11: wgpu_native::device::device_create_swap_chain
  12: wgpu_swap_chain_get_next_texture
  13: wgpu::SwapChain::get_next_texture
  14: rgx::core::SwapChain::next
  15: rx::renderer::Renderer::frame
  16: rx::timer::FrameTimer::run
  17: rx::init::{{closure}}
  18: rx::platform::run
  19: rx::init
  20: rx::main
  21: std::rt::lang_start::{{closure}}
  22: std::rt::lang_start_internal::{{closure}}
             at src/libstd/rt.rs:49
  23: std::panicking::try::do_call
             at src/libstd/panicking.rs:296
  24: __rust_maybe_catch_panic
             at src/libpanic_unwind/lib.rs:80
  25: std::panicking::try
             at src/libstd/panicking.rs:275
  26: std::panic::catch_unwind
             at src/libstd/panic.rs:394
  27: std::rt::lang_start_internal
             at src/libstd/rt.rs:48
  28: main
  29: __libc_start_main
  30: _start
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

However compiling with winit,vulkan fixed it. Thanks!

[cloudhead]

Ok great. The winit backend is not as well supported, so let me know if anything isn't working there.

[seletskiy]

@cloudhead I'm experiencing same problem. Recompiling with --features winit help, though.