Attachment 141439 Details for Bug 107757 – loader/dri3: Only wait for fence when necessary in dri3_get_buffer

[patch] loader/dri3: Only wait for fence when necessary in dri3_get_buffer

0001-loader-dri3-Only-wait-for-fence-when-necessary-in-dr.patch (text/plain), 1.68 KB, created by Michel Dänzer on 2018-09-04 10:20:53 UTC

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Creator: Michel Dänzer

Created: 2018-09-04 10:20:53 UTC

Size: 1.68 KB

patch

obsolete

>From a7780eccbb9919df652e97960918a56f048ece1d Mon Sep 17 00:00:00 2001
>From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>
>Date: Tue, 4 Sep 2018 12:18:19 +0200
>Subject: [PATCH] loader/dri3: Only wait for fence when necessary in
> dri3_get_buffer
>MIME-Version: 1.0
>Content-Type: text/plain; charset=UTF-8
>Content-Transfer-Encoding: 8bit
>
>We only need to wait for the fence before drawing to a buffer, not
>before reading from it. Also, we don't need to wait before drawing to
>the fake front buffer, as front buffer rendering by definition is
>allowed to produce artifacts.
>
>Fixes hangs in some cases with front buffer rendering.
>
>Bugzilla: https://bugs.freedesktop.org/106404
>---
> src/loader/loader_dri3_helper.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
>diff --git a/src/loader/loader_dri3_helper.c b/src/loader/loader_dri3_helper.c
>index 91bad86afd8..c173a61ba06 100644
>--- a/src/loader/loader_dri3_helper.c
>+++ b/src/loader/loader_dri3_helper.c
>@@ -1778,7 +1778,6 @@ dri3_get_buffer(__DRIdrawable *driDrawable,
>           && buffer) {
> 
>          /* Fill the new buffer with data from an old buffer */
>-         dri3_fence_await(draw->conn, draw, buffer);
>          if (!loader_dri3_blit_image(draw,
>                                      new_buffer->image,
>                                      buffer->image,
>@@ -1819,7 +1818,9 @@ dri3_get_buffer(__DRIdrawable *driDrawable,
>       buffer = new_buffer;
>       draw->buffers[buf_id] = buffer;
>    }
>-   dri3_fence_await(draw->conn, draw, buffer);
>+
>+   if (buffer_type == loader_dri3_buffer_back)
>+      dri3_fence_await(draw->conn, draw, buffer);
> 
>    /*
>     * Do we need to preserve the content of a previous buffer?
>-- 
>2.19.0.rc1
>

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Attachments on bug 107757: 141381 | 141439

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