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authorKenneth Graunke <kenneth@whitecape.org>2016-04-03 00:48:03 -0700
committerKenneth Graunke <kenneth@whitecape.org>2016-04-10 19:03:06 -0700
commit26c56e24e700d0ab4c6499fea28328045b5e4b32 (patch)
tree983001d652f07e5100e05b5630818d8652dd7083 /docs
parentce84a92df54c738d2c248716f0f673247d50e1a7 (diff)
glsl: Don't remove XFB-only varyings.
Consider the case of linking a program with both a vertex and fragment shader. The VS may compute output varyings that are intended for transform feedback, and not read by the fragment shader. In this case, var->data.is_unmatched_generic_inout will be true, but we still cannot eliminate the varyings. We need to also check !var->data.is_xfb_only. Fixes failures in ES31-CTS.gpu_shader5.fma_precision_*, which happen to use transform feedback in a way we apparently hadn't seen before. Cc: mesa-stable@lists.freedesktop.org Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
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