RFC XRender add support for dibsections in more color depths

[Anders Jonsson]

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