Make RenderTextureEmulation configurable

[Ove Kaaven]

Roderick Colenbrander skrev:
> On Mon, Oct 19, 2009 at 1:08 PM, Ove Kaaven <ovek at arcticnet.no> wrote:
>> 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".
>>
> 
> It disables one thing namely WGL_ARB_render_texture, so that's why I'm
> suggesting a generic mechanism since there might be more cases where
> hiding an extension works.

In my opinion, I think you've got it the wrong way around. Disabling
RenderTextureEmulation is not the hack. Implementing some render-texture
extension in the first place, *when the corresponding driver
functionality was never there to begin with*, was the hack. I don't
consider it a hack to *disable* a damn hackish workaround that's
apparently causing problems for some games, namely this one. If you
really want a clean solution, just rip out the render-texture-emulation
hack completely. Do you want that?