Each transform feedback target should have a separate buffer
for an offset from which to resume, instead of just having
one buffer per binding point. Otherwise, if transform feedback
is paused and other tf object is bound - the offset of the
previous tf object would be lost.
Fixes Piglit tests:
arb_transform_feedback2-change-objects-while-paused
arb_transform_feedback2-change-objects-while-paused_gles3
ext_transform_feedback-alignment 4
ext_transform_feedback-alignment 8
ext_transform_feedback-alignment 12
ext_transform_feedback-change-size offset-grow
ext_transform_feedback-change-size offset-shrink
ext_transform_feedback-change-size range-grow
ext_transform_feedback-change-size range-shrink
ext_transform_feedback-immediate-reuse-uniform-buffer
ext_transform_feedback-position *
Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8281>
These bring a whole lot of new coverage to these drivers, since dEQP is
bad at desktop GL feature coverage around early GL 3.x. piglit also gets
at a lot of MSAA, fast clearing, and texture layout issues that dEQP
doesn't do much with.
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7370>
Danylo Piliaiev
Eric Anholt