The GL driver seems to be using Angle and Vulkan. For cached GL shaders, it looks like the only thing it's caching is the SPIRV of the shader.
Bug 1954587 Comment 1 Edit History
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The GL driver seems to be using Angle and Vulkan. For cached GL shaders, it looks like the only thing it's caching is the SPIRV of the shader. ([ANGLE code](https://github.com/google/angle/blob/ae71cc1cd4ca00ee43fdd2ceac99eccb5e04c96f/src/libANGLE/renderer/vulkan/ProgramExecutableVk.cpp#L568))