[Mesa-dev] [PATCH] st/nir: Disable varying packing when doing transform feedback.
t_arceri at yahoo.com.au
Tue Jul 3 10:10:58 UTC 2018
On 03/07/18 05:51, Eric Anholt wrote:
> Eric Anholt <eric at anholt.net> writes:
>> [ Unknown signature status ]
>> Timothy Arceri <tarceri at itsqueeze.com> writes:
>>> nir_compact_varyings() is meant to skip over varyings used by xfb:
>>> /* We can't repack xfb varyings. */
>>> if (var->data.always_active_io)
>>> Any idea why that isn't working in this case?
>> Looks like GLSL IR has that flag wrong. points.7 has v_var6,7,8,9
>> transform feedback output, but the IR says:
> Any feedback on this? This is my remaining TF issue for V3D.
Hmm. I think this still gets messed up because if packing the non-xfb
varyings results in freeing up a location then st_nir_assign_var_locations()
will end up assigning a new location for the xfb varyings.
I think your patch to disable for xfb is the easiest way to work around
this for now. I still hope we might one day have a full NIR GLSL linker
to replace GLSL IR but my hopes of ever seeing one are slowly fading.
Anyway for this patch:
Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>
More information about the mesa-dev