Make RenderTextureEmulation configurable

[Ove Kaaven]

Roderick Colenbrander skrev:
> On Mon, Oct 19, 2009 at 12:45 AM, Austin English
> <austinenglish at gmail.com> wrote:
>> On Sun, Oct 18, 2009 at 1:50 PM, James McKenzie
>> <jjmckenzie51 at earthlink.net> wrote:
>>> Ove Kaaven wrote:
>>>> This makes it possible to work around bug 10080 without having to patch
>>>> the source code.
>>>>
>>> This is a hack to allow a work around to function.  Much better to
>>> actually fix the problem permanently.
>> This is direct3d, there are already several similar registry
>> workarounds for difficult problems.
>>
> 
> Well this issue is on the opengl side. Actually the game itself is
> buggy and expects that a certain level of multisampling is around
> (whiich is around on Windows). On Linux the Nvidia drivers don't offer
> this level using 'GLXFBConfigs' but using a different type of
> rendering they support this level and much higher. There is no easy
> way to offer this level. I'm not sure if this hack is the way to
> proceed though as it just disables the functionality the game needs.

It doesn't disable anything for this game. It works 100% if you disable
RenderTextureEmulation, presumably it falls back to a different
rendering path that does its own "render-texture-emulation".