[Mesa-dev] Pending issues of lollipop-x86

[Albert Freeman]

On 28 September 2015 at 20:25, Marek Olšák <maraeo at gmail.com> wrote:
> On Mon, Sep 28, 2015 at 10:19 PM, Chad Versace <chad.versace at intel.com> wrote:
>> On Fri 25 Sep 2015, Chih-Wei Huang wrote:
>>> CC to mesa-dev for help.
>>>
>>> 2015-09-25 22:12 GMT+08:00 Chih-Wei Huang <cwhuang at android-x86.org>:
>>> > 2015-09-25 16:21 GMT+08:00 Chih-Wei Huang <cwhuang at android-x86.org>:
>>> >> Actually I'm testing your mesa 11.0 branch
>>> >> to see if it is acceptable.
>>> >> The major issue I found is the
>>> >> Camera and Youtube crashing in mesa.
>>> >
>>> > OK, I can almost confirm this is a known issue
>>> > I reported to mesa devs before.
>>> > It is caused by this commit:
>>> >
>>> > commit c636284ee8ee95bb3f3ad31aaf26a9512ec5006c
>>> > Author: Chad Versace <chad.versace at intel.com>
>>> > Date:   Tue May 5 19:05:32 2015 -0700
>>> >
>>> >     i965/sync: Implement DRI2_Fence extension
>>> >
>>> > By reverting it the crashing is gone.
>>> >
>>> > However, I still hope we can find
>>> > a correct fix.
>>>
>>> After some debugging, it crashed in
>>> dri2_client_wait_sync() of
>>> ...src/egl/drivers/dri2/egl_dri2.c
>>> The ctx returned by _eglGetCurrentContext()
>>> is NULL.
>>>
>>> static EGLint
>>> dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
>>>                       EGLint flags, EGLTime timeout)
>>> {
>>>    _EGLContext *ctx = _eglGetCurrentContext();
>>>
>>> ==> ctx is NULL
>>>
>>>    if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,  <== OOPS!
>>>                                          dri2_sync->fence, wait_flags,
>>>                                          timeout))
>>>
>>>
>>> Why does _eglGetCurrentContext() return NULL?
>>> Any recommended fix?
>>
>> I don't know. Can provide a crashing test case for non-Android Linux? If
>> so, then I'll look into debugging it.
>
> Chad, you would be wasting your time. :) I'd already sent patches that
> fix this for libEGL and gallium and Emil sent an initial fix for i965
> which might work too.
>
> Marek
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Sorry, I misunderstood where the issue was.