diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_draw.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_draw.c b/src/mesa/drivers/dri/i965/brw_draw.c index b818a0d77a3..ec4fe0b096f 100644 --- a/src/mesa/drivers/dri/i965/brw_draw.c +++ b/src/mesa/drivers/dri/i965/brw_draw.c @@ -872,6 +872,66 @@ brw_finish_drawing(struct gl_context *ctx) } } +/** + * Implement workarounds for preemption: + * - WaDisableMidObjectPreemptionForGSLineStripAdj + * - WaDisableMidObjectPreemptionForTrifanOrPolygon + * - WaDisableMidObjectPreemptionForLineLoop + * - WA#0798 + */ +static void +gen9_emit_preempt_wa(struct brw_context *brw, + const struct _mesa_prim *prim) +{ + bool object_preemption = true; + const struct gen_device_info *devinfo = &brw->screen->devinfo; + + /* Only apply these workarounds for gen9 */ + assert(devinfo->gen == 9); + + /* WaDisableMidObjectPreemptionForGSLineStripAdj + * + * WA: Disable mid-draw preemption when draw-call is a linestrip_adj and + * GS is enabled. + */ + if (brw->primitive == _3DPRIM_LINESTRIP_ADJ && brw->gs.enabled) + object_preemption = false; + + /* WaDisableMidObjectPreemptionForTrifanOrPolygon + * + * TriFan miscompare in Execlist Preemption test. Cut index that is on a + * previous context. End the previous, the resume another context with a + * tri-fan or polygon, and the vertex count is corrupted. If we prempt + * again we will cause corruption. + * + * WA: Disable mid-draw preemption when draw-call has a tri-fan. + */ + if (brw->primitive == _3DPRIM_TRIFAN) + object_preemption = false; + + /* WaDisableMidObjectPreemptionForLineLoop + * + * VF Stats Counters Missing a vertex when preemption enabled. + * + * WA: Disable mid-draw preemption when the draw uses a lineloop + * topology. + */ + if (brw->primitive == _3DPRIM_LINELOOP) + object_preemption = false; + + /* WA#0798 + * + * VF is corrupting GAFS data when preempted on an instance boundary and + * replayed with instancing enabled. + * + * WA: Disable preemption when using instanceing. + */ + if (prim->num_instances > 1) + object_preemption = false; + + brw_enable_obj_preemption(brw, object_preemption); +} + /* May fail if out of video memory for texture or vbo upload, or on * fallback conditions. */ @@ -987,6 +1047,9 @@ retry: brw_upload_render_state(brw); } + if (devinfo->gen == 9) + gen9_emit_preempt_wa(brw, prim); + brw_emit_prim(brw, prim, brw->primitive, xfb_obj, stream); brw->batch.no_wrap = false; |