Find why a shader is not supported on my GPU?

Hi,

I have a utility shader that does some calculations on the GPU. The shader works in the Editor with Graphics Emulation set to Shader Hardware Tier 3 and WebGL 1.0.

When I load the scene in the browser, I receive the error:

"Shader is not supported on this GPU (none of subshaders/fallbacks are suitable)"

While that is helpful, it would be more helpful to know why the shader is not supported. Where can I find out (e.g. via more verbose logging, etc) why the shader is not supported?

Sj

 

https://docs.unity3d.com/Manual/webgl-graphics.html has a checklist.

 

Thanks Hippocoder. That page is good but it would still be useful to have proper errors in the browser.

(In the end I just resorted to commenting out bits of the shader in a binary-search pattern and found the issue was with flow control - nothing mentioned by the WebGL page or that showed as an error in the Editor)

Not sure how else I would have found that. Next time I'll try WebGL inspector. I also wonder what the browser calls to compile the shaders, maybe we could do the same outside and get more detailed reports...