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This was useful for emulating GL 3.2 in virgl on a GLES3 host renderer, before GL_EXT_depth_clamp introduced the ability for hardware drivers to expose the feature on GLES. Now that we have that, the desktop-GL-capable HW that virgl cares about can expose desktop GL even on its GLES renderer on the host without this emulation. I don't think anyone particularly cares about hitting higher GL versions on actually-core-GLES hosts with virgl. Reviewed-by: Marek Olšák <marek.olsak@amd.com> Acked-by: Gert Wollny <gert.wollny@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13729>