wined3d: dirtify colorkey state in IWineD3DDeviceImpl_SetTexture

[Alexander Dorofeyev]

Oops, too bad I didn't notice it's supposed to happen in sampler. Why that isn't 
called - I think it's because that check at line 2415 is inside

if(stateblock->textures[sampler]) {

block. Since the app is setting texture to NULL, it's not entering. Taking the 
colorkey part out of this block helps. I guess it will be a better fix then.

Stefan Dösinger wrote:
> Am Donnerstag, 27. Dezember 2007 07:27:21 schrieb Alexander Dorofeyev:
>> Hi.
>>
>> Colorkey emulation by alpha test should be disabled when game sets no
>> texture (or texture without colorkey) and reenabled when needed. Dirtifying
>> a state here, so that state_alpha will be called, fixes the problem.
> In theory the texture stage handler calls the colorkey handler if a color key 
> change condition is met. Can you check why the call to state_alpha() in 
> sampler() in state.c, line 2415 isn't called properly?