turnip/a650: most VK_EXT_filter_cubic tests in dEQP-VK.texture.filtering.* fail
E.g. looking at dEQP-VK.texture.filtering.2d.combinations.linear_mipmap_nearest.cubic.repeat.clamp_to_edge
failure:
Test detects a small error in Turnip, however in blob the result is wildly different and the test passes.
- We are not doing anything different in how texture state is specified or how prefetch is done, but blob gives a different output. Maybe there is some global setting?
- I'm not sure how blob passes the test given the result is not filtered at all. And for tests which pass on both turnip and blob some resulting images are different in the same way - blob does not filter some and turnip does.
I didn't dive deep enough into filtering and address modes, so I don't know what is right at the moment.