RFC XRender add support for dibsections in more color depths

Austin English austinenglish at gmail.com
Sat Aug 1 16:31:36 CDT 2009

On Fri, Jul 31, 2009 at 3:51 AM, Roderick
Colenbrander<thunderbird2k at gmail.com> wrote:
> On Fri, Jul 31, 2009 at 9:25 AM, Austin English<austinenglish at gmail.com> wrote:
>> On Thu, Jul 23, 2009 at 3:51 PM, Roderick
>> Colenbrander<thunderbird2k at gmail.com> wrote:
>>> Hi,
>>> For some weeks I have been working on moving more 2D rendering to
>>> XRender. XRender has three advantages for Wine. First of all it allows
>>> us to perform more rendering operations using X which we previously
>>> did using a combination of software rendering and back-forth copying
>>> between the Xserver. Second XRender offers depth conversion (this
>>> gives us proper alpha support in Wine and allows us to bypass DIB
>>> color conversion in some cases!). Third XRender brings us more
>>> hardware acceleration and that way more performance.
>>> The patch attached to this thread adds support for dibsections in
>>> additional color depths. On Xservers running at 24-bit this patch
>>> offers us dibsections in 1-bit/15-bit/16-bit/24-bit/32-bit. (32-bit is
>>> for proper alpha support) Big parts of the Wine X11 Driver make
>>> assumptions about having only two color depths around (1-bit and
>>> screen_depth e.g. 24-bit). I would like to request that people apply
>>> the current patch to latest git (in combination with the Office2007
>>> patch which I posted to wine-patches). Please report any 2D rendering
>>> issues you see and also mention possible Wine crashes due to X errors
>>> like BadMatch. Try as much programs as possible.
>>> Thanks in advance,
>>> Roderick Colenbrander
>> Still fails the gimp test in appinstall. It's just this patch on top
>> of git, nothing else right?
>> --
>> -Austin
> Yeah it is just this patch on top of git. At what point does gimp fail
> for you? I tried to open some images including the png gimp splash
> screen and I'm seeing no issues. To be certain that you are using the
> right patch I have reattached it (this time with the white space
> trailing issues fixed). Just to be sure what display drivers are you
> using and what videocard?

That one worked...perhaps I had some cruft in my tree :-/.

This line is new in the output:
(gimp-2.6.exe:52): Gimp-Display-CRITICAL **:
gimp_display_shell_draw_get_scaled_image_size_for_scale: assertion
`GIMP_IS_IMAGE (shell->display->image)' failed

but doesn't seem to be critical.

Card is a 9800 GeForce GTX, 190.18 drivers.

Running the suite again, it seems to work fine. Photoshop had that
failure we discussed on IRC, but it's a subtle race condition
unrelated to your patch. I'm working on that now.


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