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Dave Airlie authored
The previous fix worked when the second channel wasn't exposed, but a couple of piglit tests have inputs with just the y/z chans, no x/w. Partly Fixes piglit ext_transform_feedback-immediate-reuse-index-buffer with llvmpipe/nir Fixes: 5363cda5 ("gallivm: add swizzle support where one channel isn't defined.") Reviewed-by: Roland Scheidegger <sroland@vmware.com>
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