Mesa (master): panfrost: Disable point sprites on Bifrost

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Module: Mesa
Branch: master
Commit: 828c7e76267b6bccd284aa4de4d518d87393780f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=828c7e76267b6bccd284aa4de4d518d87393780f

Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date:   Sat Oct 31 10:25:07 2020 -0400

panfrost: Disable point sprites on Bifrost

It doesn't look like the lowering in !6473 will land before the branch
point. Let's nop out point sprites in the backend to avoid MMU faults
from creating invalid Midgard-style varyings.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7408>

---

 src/gallium/drivers/panfrost/pan_cmdstream.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/gallium/drivers/panfrost/pan_cmdstream.c b/src/gallium/drivers/panfrost/pan_cmdstream.c
index 645047fb816..0653db31c2b 100644
--- a/src/gallium/drivers/panfrost/pan_cmdstream.c
+++ b/src/gallium/drivers/panfrost/pan_cmdstream.c
@@ -1720,6 +1720,11 @@ panfrost_emit_varying_descriptor(struct panfrost_batch *batch,
 
         struct pipe_stream_output_info *so = &vs->stream_output;
         uint16_t point_coord_mask = ctx->rasterizer->base.sprite_coord_enable;
+
+        /* TODO: point sprites need lowering on Bifrost */
+        if (dev->quirks & IS_BIFROST)
+                point_coord_mask =  0;
+
         unsigned present = pan_varying_present(vs, fs, dev->quirks, point_coord_mask);
 
         /* Check if this varying is linked by us. This is the case for