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i965: Properly flush in hsw_pause_transform_feedback().

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Fixes a number of transform feedback tests when run with Linux 4.8,
which allows us to use the MI_LOAD_REGISTER_REG command, at which point
we started using this new broken path.

ES3-CTS.functional.transform_feedback.array_element.interleaved.lines.*
and Piglit's arb_transform_feedback2/draw-auto are both fixed by this
patch, for example.

Thanks to Chris Wilson for catching this mistake!

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99030
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
This commit is contained in:
Kenneth Graunke 2017-01-06 00:09:53 -08:00
parent 4295af646f
commit 2138347a45
1 changed files with 3 additions and 0 deletions
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3
src/mesa/drivers/dri/i965/hsw_sol.c
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@ -201,6 +201,9 @@ hsw_pause_transform_feedback(struct gl_context *ctx,
(struct brw_transform_feedback_object *) obj;
if (brw->is_haswell) {
/* Flush any drawing so that the counters have the right values. */
brw_emit_mi_flush(brw);
/* Save the SOL buffer offset register values. */
for (int i = 0; i < BRW_MAX_XFB_STREAMS; i++) {
BEGIN_BATCH(3);