From 1b0df8a46020cc88afeaa4decb42a782ab168afb Mon Sep 17 00:00:00 2001 From: Andrii Simiklit Date: Wed, 15 Aug 2018 18:20:32 +0300 Subject: [PATCH] i965/gen6/xfb: handle case where transform feedback is not active MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Samuel Iglesias Gonsálvez --- 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 c051848985f..ca24394aa7d 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. -- 2.30.2