[Bug] Headless Chrome - Cannot read property 'blendFuncSeparate' of null

[Atnaize]

Bug description

"Uncaught TypeError: Cannot read property 'blendFuncSeparate' of null" error when launching page with headless Chrome.
The page with the renderer works fine with a classic Chrome browser.

Steps to reproduce

Open a page with a renderer with an headless Chrome under a Debian 12 without GPU

Detailed Behavior

I used the following options

--window-size=1920,1080
--no-sandbox
--use-gl=egl
--enable-webgl
--enable-webgl-developer-extensions
--enable-webgl-draft-extensions
--enable-webgl-image-chromium
--ignore-gpu-blocklist
--enable-gpu-rasterization
--enable-zero-copy
--enable-webgpu-developer-features 
--enable-gpu-debugging
--enable-gpu-driver-debug-logging
--headless=new

I tried to disable some of them, but the end result is the same
I also tried

--use-angle=swiftshader
--use-gl=angle

As I saw this issue
But without different behavior

Expected Behavior

Page should render correctly

Environment

• vtk.js version: 24.19.2
• Browsers: ChromeDriver 121.0.6167.85
• OS: Debian GNU/Linux 12 (bookworm) without GPU

[daker]

Please attach the GPU report with --print-to-pdf=report.pdf chrome://gpu

[Atnaize]

Unfortunately this option isn't working. In the env I'm using
Probably because I don't have GPU at all

[daker]

I am not sure webgl will work without GPU unless you force the driver to use a software implementation

[Atnaize]

Hi @daker, I tried again with the same machine having a GPU now, but I still have the same issue

When I try to generate the PDF with --print-to-pdf parameter, I have this kind of error

[daker]

try with --use-angle=vulkan