I take my last message back: it seems that dxlevel 98 isn't valid any 
more, if it ever was. I guess they rolled the sRGB-compensating stuff 
into 95.

On 07/02/2010 1:31, Tom Edwards wrote:
> There are some DX10 hardware features accessed through the DX9 API,
> which can be enabled with mat_dxlevel 98. The only difference we know of
> is a change to the way alpha blending works:
>
> http://www.pcgameshardware.de/aid,635907/Erste-Direct-X-10-Screenshots-von-der-Source-Engine/Spiele/News/
> http://www.valvesoftware.com/publications/2008/GDC2008_PostProcessingInTheOrangeBox.pdf
>
> In fact I think the presentation is talking about how Valve counteracted
> the changes so that the engine's colour output stays the same on DX9 and
> DX10 hardware. So there aren't any changes at all!
>
> On 07/02/2010 1:00, Rodrigo 'r2d2rigo' Diaz wrote:
>    
>> Actually, the paper "Post processing in the Orange Box" mentions DX10 in a
>> few places. But I think they are referring to the X360 version of the
>> engine, which uses a superset of DX9 :|
>>
>> 2010/2/7 Scott Highland<[email protected]>
>>
>>
>>      
>>> *Remembers Valve talking about upgrading Source to DX10 since the E3
>>> techdemo days*
>>> memoriees~
>>>
>>> i mean... broken promiises~
>>>
>>> Ryan Sheffer wrote:
>>>
>>>        
>>>> Valve have to actually integrate these features as far as I know. The
>>>>
>>>>          
>>> next
>>>
>>>        
>>>> iteration of the engine might hold more related to DX10 and 11.
>>>>
>>>> On Fri, Feb 5, 2010 at 12:47 PM, Tobias Kammersgaard<
>>>> [email protected]>   wrote:
>>>>
>>>>
>>>>
>>>>          
>>>>> Source only supports fully supports DirectX 9. There are a few DirectX
>>>>>
>>>>>            
>>> 10
>>>
>>>        
>>>>> features that's supposed relating to textures, but that's all as far as
>>>>>
>>>>>            
>>> I
>>>
>>>        
>>>>> know.
>>>>> You can't update the engine to use newer versions of DirectX since the
>>>>> source for the ShaderAPI isn't available.
>>>>>
>>>>> /ScarT
>>>>>
>>>>>
>>>>> On 5 February 2010 21:41, Adam "amckern" McKern<[email protected]>
>>>>>
>>>>>            
>>> wrote:
>>>
>>>        
>>>>>
>>>>>            
>>>>>> Brent,
>>>>>>
>>>>>> Even though the overlay has been updated to support DX10&   DX11, i
>>>>>>
>>>>>>
>>>>>>              
>>>>> suspect
>>>>>
>>>>>
>>>>>            
>>>>>> that this is only for new PC Games, has nothing to do with the source
>>>>>> engine.
>>>>>>
>>>>>> I think source is stuck in the dark ages of DX9 - let me know however
>>>>>>
>>>>>>              
>>> if
>>>
>>>        
>>>>>> anything is incorrect.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Adam McKern
>>>>>>
>>>>>> --------
>>>>>> Owner Nigredo Studios http://www.nigredostudios.com
>>>>>>
>>>>>> --- On Sat, 6/2/10, Brent Lewis<[email protected]>   wrote:
>>>>>>
>>>>>> From: Brent Lewis<[email protected]>
>>>>>> Subject: [hlcoders] DirectX 10.1 and SM4.0
>>>>>> To: [email protected]
>>>>>> Received: Saturday, 6 February, 2010, 4:06 AM
>>>>>>
>>>>>>
>>>>>> I'm pretty certain that this is not possible, but doesn't hurt to ask.
>>>>>>
>>>>>>              
>>> Is
>>>
>>>        
>>>>>> there a way to enable multisample render target and depth buffer
>>>>>>
>>>>>>
>>>>>>              
>>>>> readback.
>>>>>
>>>>>
>>>>>            
>>>>>> It's new in DX10 and I don't see anything in the interfaces that
>>>>>>
>>>>>>              
>>> suggests
>>>
>>>        
>>>>>> that source is aware of it. Otherwise anti-aliasing wont be available
>>>>>>
>>>>>>              
>>> in
>>>
>>>        
>>>>>>
>>>>>>              
>>>>> a
>>>>>
>>>>>
>>>>>            
>>>>>> deferred shading implementation. I suspect it needs SM4.0 as well, but
>>>>>>
>>>>>>              
>>> I
>>>
>>>        
>>>>>> haven't looked at the implementation details for the read back stuff.
>>>>>>
>>>>>>
>>>>>>              
>>>>> Will
>>>>>
>>>>>
>>>>>            
>>>>>> changing some perl scripts be enough to compile SM4.0 or is
>>>>>> shadercompile.exe (or whatever it's called) internally incapable of
>>>>>> compiling SM4.0? Thanks!
>>>>>>
>>>>>> _______________________________________________
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>>>>>> please visit:
>>>>>> http://list.valvesoftware.com/mailman/listinfo/hlcoders
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>              
>>>>>
>>>>>            
>>>    
>>> __________________________________________________________________________________
>>>
>>>        
>>>>>
>>>>>            
>>>>>> Yahoo!7: Catch-up on your favourite Channel 7 TV shows easily, legally,
>>>>>>
>>>>>>
>>>>>>              
>>>>> and
>>>>>
>>>>>
>>>>>            
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>>>>>> please visit:
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>              
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>>>>> please visit:
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>>>>>
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>>>>
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