RFC XRender add support for dibsections in more color depths

[Roderick Colenbrander]

I guess some of the font or dib rendering code is making some depth
assumptions somewhere. Is there an english version or demo version of
the app? I could take a look at it then.

Roderick

On Fri, Jul 24, 2009 at 11:06 AM, Anders
Jonsson<anders.jonsson at norsjonet.se> wrote:
> Roderick Colenbrander 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
>>
>> ------------------------------------------------------------------------
> Hi,
>
> tested the patch, and it makes some improvement on bug 10408:
> http://bugs.winehq.org/show_bug.cgi?id=10408#c24
>
> The drawback is that some text that is supposed to be white now is
> colored. See comparison:
> http://bugs2.winehq.org/attachment.cgi?id=22572
>