[5/5] d3d9: Test our texop implementation

[H. Verbeet]

2008/5/24 Stefan Dösinger <stefan at codeweavers.com>:
> Am Samstag, 24. Mai 2008 10:33:42 schrieb H. Verbeet:
>> The color_match() function which this test introduces should be used
>> for the other visual tests that require an approximate match as well,
>> but doing this is outside the scope of this patch.
> Dan recently added color_near() for this purpose. Is there any difference
> between the functions(I see that yours passes the hardcoded slop as a
> parameter). Do you have any preference towards any implementation? I'm
> inclined to use yours because of the additional parameter and the better
> checking with abs()
>
I wrote this test some time ago already, but I do think having the
slop as parameter is useful, since the acceptable range of values
pretty much depends on the specific test. Another difference is that I
check the alpha channel as well, although in practice that doesn't
matter here.