[Bug 21726] New: Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

Summary: Explicit access to and creation of front/back buffers
                    for DirectDraw interfaces prior to version 7 needed
           Product: Wine
           Version: unspecified
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P1
         Component: directx-ddraw
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

In DirectDraw, the interfaces prior to version 7 allow the explicit creation of
front and back buffers. In DirectDraw7, which is the last and latest ddraw
implementation, this was changed.

Currently, the WINE implementation of ddraw seems to use the same functions for
front/back buffer handling, function that seem to be based in the ddraw7
interface and prohibits explicit front and back buffers. This breaks a fair
amount of older games which rely on earlier ddraw interfaces.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

Michael  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |tasklist, winelib

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

Michael  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |9008, 9190

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

Vitaliy Margolen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P1                          |P2
              Alias|frontbackbuffers            |
           Severity|major                       |normal

--- Comment #1 from Vitaliy Margolen   2010-02-15 08:48:16 ---
Please provide example of the game, and the actual problem with that game. Of
course make sure to test with latest Wine version.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

Vitaliy Margolen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|tasklist, winelib           |
             Status|UNCONFIRMED                 |RESOLVED
             Blocks|9008, 9190                  |
         Resolution|                            |INVALID

--- Comment #2 from Vitaliy Margolen   2010-02-15 08:49:12 ---
Don't open beta bugs.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

Vitaliy Margolen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED
          Component|directx-ddraw               |-unknown

--- Comment #3 from Vitaliy Margolen   2010-02-15 08:49:26 ---
Closing

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #4 from Michael   2010-02-15 15:16:11 ---
(In reply to comment #2)
> Don't open beta bugs.

Sorry, I don't understand. Did I report it to the wrong version of WINE? What
is the procedure, should I reopen it for another version? I've never reported a
bug here before...

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #5 from Andrew Nguyen   2010-02-15 15:19:45 ---
Vitaliy meant to say metabug. In general, you should open bug reports for
specific issues in a particular application. The page
http://wiki.winehq.org/Bugs discusses some general guidelines for bug
reporting.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #6 from Vitaliy Margolen   2010-02-15 20:09:43 ---
Yes, meant "meta bugs". They don't help just add extra clutter and noise.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #7 from Michael   2010-02-16 02:07:39 ---
Ok, thank you for the help and pointers.

This kind of error, what is the proper forum to take them? I have located a
todo wiki page for DX (http://wiki.winehq.org/DirectX-ToDo) where I was
thinking of adding this, but if you know a better (or the correct) place, I'd
appreciate if you pointed me there.

Thanks for your kind assistance :)

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #8 from Dmitry Timoshkov   2010-02-16 03:47:35 ---
Do you have a specific application which doesn't work because of this problem?

Also please specify Wine version you have tested with.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #9 from Michael   2010-02-16 04:29:47 ---
(In reply to comment #8)
> Do you have a specific application which doesn't work because of this problem?
>
> Also please specify Wine version you have tested with.

I know of at least two games: Warhammer: Dark Omen (bug 9190), and Combat
Pillows (bug 9008). It is possible that Fate Axis (recently closed bug 8232,
game still not running, though) depends on this too.

Tested the two first games with WINE version 1.1.24 on Fedora.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

Dmitry Timoshkov  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unspecified                 |1.1.24

--- Comment #10 from Dmitry Timoshkov   2010-02-16 05:20:24 ---
(In reply to comment #9)
> I know of at least two games: Warhammer: Dark Omen (bug 9190), and Combat
> Pillows (bug 9008). It is possible that Fate Axis (recently closed bug 8232,
> game still not running, though) depends on this too.

Why do you think that the problems in that games are caused by this?
Are there bug reports for problems in that games?

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #11 from Michael   2010-02-16 14:36:24 ---
(In reply to comment #10)
> (In reply to comment #9)
> > I know of at least two games: Warhammer: Dark Omen (bug 9190), and Combat
> > Pillows (bug 9008). It is possible that Fate Axis (recently closed bug 8232,
> > game still not running, though) depends on this too.
>
> Why do you think that the problems in that games are caused by this?
> Are there bug reports for problems in that games?

Yes, both games have bug reports where the dumps indicate they need explicit
back and/or front buffers.

I remember coding games myself for DX5 and DX6 many years ago now, and I made
heavy use of explicit access to front and back buffers. In fact, for DX games <
v7 it was recommended practice for performance to create multiple back buffers
and fill them progressively to use CPU cycles efficiently. DX3 games often
blitted directly to the front buffer.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #12 from Dmitry Timoshkov   2010-02-16 23:48:31 ---
(In reply to comment #11)
> Yes, both games have bug reports where the dumps indicate they need explicit
> back and/or front buffers.

Then there is no need to create duplicate bug reports.

[Bug 21726] Explicit access to and creation of front/back buffers for DirectDraw interfaces prior to version 7 needed

http://bugs.winehq.org/show_bug.cgi?id=21726

--- Comment #13 from Michael   2010-02-17 02:50:13 ---
(In reply to comment #12)
> (In reply to comment #11)
> > Yes, both games have bug reports where the dumps indicate they need explicit
> > back and/or front buffers.
>
> Then there is no need to create duplicate bug reports.

Ok, procedure learned. Should we amend the bug report guidelines page with
this, since as far as I found it wasn't mentioned anywhere?

The reason this post was made was because I though is suitable to describe a
root cause, the fixing of which might hopefully solve a slew of other bugs.
Especially since the apps/games affected tend to be older and not receive much
attention.

But thank you for your time.