From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Wed, 10 Jun 2020 23:28:28 +0000 (-0400)
Subject: panfrost: Add panfrost_streamout_offset helper
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e26ac2e165c0c313df74266763b3dd0755354a98;p=mesa.git

panfrost: Add panfrost_streamout_offset helper

Calculates the bias required for an xfb record in the src_offset field
to account for truncating the address to force alignment.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5423>
---

diff --git a/src/gallium/drivers/panfrost/pan_cmdstream.c b/src/gallium/drivers/panfrost/pan_cmdstream.c
index 5c0d7f4d0e9..af2cffcd2ce 100644
--- a/src/gallium/drivers/panfrost/pan_cmdstream.c
+++ b/src/gallium/drivers/panfrost/pan_cmdstream.c
@@ -1615,6 +1615,13 @@ panfrost_emit_varyings(struct panfrost_batch *batch, union mali_attr *slot,
         return transfer.gpu;
 }
 
+static unsigned
+panfrost_streamout_offset(unsigned stride, unsigned offset,
+                        struct pipe_stream_output_target *target)
+{
+        return (target->buffer_offset + (offset * stride * 4)) & 63;
+}
+
 static void
 panfrost_emit_streamout(struct panfrost_batch *batch, union mali_attr *slot,
                         unsigned stride, unsigned offset, unsigned count,