2b5519e865
Must be used at the end of a vertex shader that does NOT write any varyings, has rasterizer discard enabled, and is run only for its side effects. The encoding looks like st_var, but I don't know what this actually *does*. I just know that the GPU faults if this is omitted. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20446>