Skybox broken on Windows/Intel/OpenGL

[nmfisher]

Describe the bug
Skybox is only rendered in the top-right quadrant when running on Windows/Intel HD530 with the OpenGL backend on Filament v.1.50.4

To Reproduce
Steps to reproduce the behavior:

1. Run gltf_viewer on Windows.

Expected behavior
Skybox should be rendered across the entire viewport.

Screenshots
If applicable, add screenshots to help explain your problem.

Logs
C:\Users\Nick>G:\Downloads\filament-windows\bin\gltf_viewer.exe -a opengl -i G:\Downloads\filament-windows\bin\assets\ibl\lightroom_14b
FEngine (64 bits) created at 000002891BAD0E90 (threading is enabled)
FEngine resolved backend: OpenGL
Backend feature level: 3
FEngine feature level: 3

Desktop (please complete the following information):

• OS: Windows
• GPU: Intel HD530
• Backend: OpenGL

[pixelflinger]

out of curiosity, did you try the vulkan backend and did it work?

[nmfisher]

Sorry, I didn't mean to include Vulkan when I created the issue (erroneous copy-paste when I created the issue from the template), I've deleted it.

I can only test with the OpenGL backend because gltf_viewer has never worked with Vulkan on this machine, it's always crashed on startup (despite vulkaninfo showing that it is supported by the driver).

[liuwenbinscom]

I also encountered the same problem, and it happens to all programs

[liuwenbinscom]

Enable stereo eyes in the setup function, and set the number of stereo eyes to 1 in the configuration. It seems to be OK.

[liuwenbinscom]

setup { view->setStereoscopicOptions({ .enabled = true }); }

{ app.config.stereoscopicEyeCount = 1;
filamentApp.run(app.config, setup, cleanup, gui, preRender);}