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32d50d0f75
If the VUE map has slots at the end which the shader does not write,
then we'd "flush" (constructing an URB write) on the last output it
actually wrote. Then, we'd construct another SEND with EOT, but with
no actual payload data. That's not legal.
For example, SSO programs have clip distance slots allocated no matter
what, but the shader may not write them. If it doesn't write any user
defined varyings, then the clip distance slots will be the last ones.
Found while debugging
dEQP-VK.tessellation.shader_input_output.gl_position_vs_to_tcs_to_tes
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
(cherry picked from commit
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