https://bugs.freedesktop.org/show_bug.cgi?id=92946
Bug ID: 92946
Summary: [softpipe] piglit fcc-front-buffer-distraction
regression
Product: Mesa
Version: git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Keywords: bisected, regression
Severity: normal
Priority: medium
Component: Mesa core
Assignee: mesa-dev@lists.freedesktop.org
Reporter: v...@freedesktop.org
QA Contact: mesa-dev@lists.freedesktop.org
CC: airl...@freedesktop.org
mesa: 3694d58e6c4a39bd84e8aef0d8e67c3ae9447f33 (maser 11.1.0-devel)
$ ./bin/fcc-front-buffer-distraction -auto
Probe color at (0,0)
Expected: 1.000000 0.000000 0.000000 1.000000
Observed: 1.000000 0.000000 0.000000 0.000000
PIGLIT: {"result": "fail" }
2b676570960277d47477822ffeccc672613f9142 is the first bad commit
commit 2b676570960277d47477822ffeccc672613f9142
Author: Dave Airlie <airl...@redhat.com>
Date: Fri Oct 9 01:38:08 2015 +0100
gallium/swrast: fix front buffer blitting. (v2)
So I've known this was broken before, cogl has a workaround
for it from what I know, but with the gallium based swrast
drivers BlitFramebuffer from back to front or vice-versa
was pretty broken.
The legacy swrast driver tracks when a front buffer is used
and does the get/put images when it is mapped/unmapped,
so this patch attempts to add the same functionality to the
gallium drivers.
It creates a new context interface to denote when a front
buffer is being created, and passes a private pointer to it,
this pointer is then used to decide on map/unmap if the
contents should be updated from the real frontbuffer using
get/put image.
This is primarily to make gtk's gl code work, the only
thing I've tested so far is the glarea test from
https://github.com/ebassi/glarea-example.git
v2: bump extension version,
check extension version before calling get image. (Ian)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91930
Cc: <mesa-sta...@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airl...@redhat.com>
:040000 040000 1726a5f7f01d9ae1fc76de431bb24cce16cf69ee
75f18ded95766bac58d0c37c96ffa071a4a32071 M include
:040000 040000 ee333146b90c837460ceab252445e3b38fc528d5
dc0656326c3fb9750fda1f6d3e75aeed99003bc6 M src
bisect run success
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