Hi Andrey, Thanks for the report and all the analysis work on your side. I am on holidays at the momentand from tomorrow onwards I won't have reliable internet access but Samuel will be back fromhis vacaction next week and he might be be able to have a look at the problem and your patch. Thanks,Iago On Wed, 2018-08-15 at 18:26 +0300, andrey simiklit wrote: > Hi all, > > This workaround just helps me to avoid the graphical corruption on > SNB but > I not sure is it good idea. > Regards, > Andrii. > > On Wed, Aug 15, 2018 at 6:20 PM, <[email protected]> wrote: > > From: Andrii Simiklit <[email protected]> > > > > > > > > When the SVBI Payload Enable is false I guess the register R1.4 > > > > which contains the Maximum Streamed Vertex Buffer Index is filled > > by zero > > > > and GS stops to write transform feedback when the transform > > feedback > > > > is not active. > > > > > > > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107579 > > > > Signed-off-by: Andrii Simiklit <[email protected]> > > > > --- > > > > src/mesa/drivers/dri/i965/genX_state_upload.c | 2 +- > > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > > > diff --git a/src/mesa/drivers/dri/i965/genX_state_upload.c > > b/src/mesa/drivers/dri/i965/genX_state_upload.c > > > > index ea5ad55..0f82500 100644 > > > > --- a/src/mesa/drivers/dri/i965/genX_state_upload.c > > > > +++ b/src/mesa/drivers/dri/i965/genX_state_upload.c > > > > @@ -2806,7 +2806,7 @@ genX(upload_gs_state)(struct brw_context > > *brw) > > > > #if GEN_GEN < 7 > > > > gs.SOStatisticsEnable = true; > > > > if (gs_prog->info.has_transform_feedback_varyings) > > > > - gs.SVBIPayloadEnable = true; > > > > + gs.SVBIPayloadEnable = > > _mesa_is_xfb_active_and_unpaused(ctx); > > > > > > > > /* GEN6_GS_SPF_MODE and GEN6_GS_VECTOR_MASK_ENABLE are > > enabled as it > > > > * was previously done for gen6. > > > > -- > > > > 2.7.4 > > > > > >
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