[Bug 25117] Antialising does not work in portal.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=25117

Alexey Loukianov <mooroon2 at mail.ru> changed:

           What    |Removed                     |Added
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                 CC|                            |mooroon2 at mail.ru

--- Comment #5 from Alexey Loukianov <mooroon2 at mail.ru> 2011-09-11 05:25:12 CDT ---
1. Stock Wine prefix configuration prior to 1.3.27 had multisampling support
disabled due to incompatibilities between Wine's MSAA implementation and
rendering paths of modern apps (rendering into textures instead of backbuffer,
e.t.c.). It was possible to enable MSAA support through registry setting (or
simply by using "winetricks multisampling=enabled" in you've got winetricks
installed), but one should expect rendering errors with some shaders, shadows,
e.t.c. Some of this problems can be fixed using backbuffer as targer for
offscreen rendering (winetricks orm=backbuffer) instead of framebuffer objects,
but this would broke a number of other things (huge slowdowns when some shaders
being used, effects rendered upside-down due to a bug #25150 in Wine versions
from 1.3.4 up to 1.3.27) and for AA to work one would have to not only enable
it in game menu but also force it from driver control panel. Also it might be
required to play with enabling/disabling GLSL support as results may vary from
app to app and between different Wine versions ("winetricks glsl=enabled" or
"winetricks glsl=disabled").

2. In Wine 1.3.27 there was a new multisampling implementation introduced and
multisampling support had been turned on by default. In case you're using same
WINEPREFIX you were using with earlier Wine versions it might be required to
reset settings to reasonable values in order to benefit from new code:
"winetricks glsl=enabled orm=fbo miltisampling=enabled".

3. Low performance in "King`s Bounty: The Legend" had been caused by other
reasons (see bug #22528 and bug #22478) that had been fixed as of Wine 1.3.27.
Unigine problems with AA under OpenGL on nVIDIA HW are known to be Unigine
engine render path specific and have very little chance to also hit Wine
(Wine's render path for emulation of Direct3D 9 is much more simpler than
Unigine render path utilizing advanced features like global illumination and hw
tessellation).

To the bottom line: I believe that this bug should be CLOSED FIXED as it had
been really fixed by Wine 1.3.27. IMO all the problems with Direct3D
multisampling under Wine should be reported as separate bugs after testing
under fresh Wine version (1.3.28+).

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