28c4abe57c
`eevee_shadow_page_tile_store` shader uses `VIEWPORT_INDEX` and `LAYER`. Both use an optional extension in OpenGL and Vulkan. When the extension isn't available a geometry shader is injected to emulate the extension. The generated geometry shader requires `instance_name` to be set. This wasn't the case for `eevee_shadow_page_tile_store` shader. This PR also adds a detection for incompatible shader infos. - Shaders that use `VIEWPORT_INDEX` or `LAYER` cannot have a geometry stage. This check is done in debug and release builds. - Shaders that use a fallback shader should have instance names set in the stage interfaces. This check is only done in debug builds. Pull Request: https://projects.blender.org/blender/blender/pulls/113649
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