Also fixes crashes in Van Helsing's loadout!

I believe that should've already been fixed by #933 which was included in 0.7.14

Also fixes crashes in loading Sonic Heroes!

@vanderleivieirainacio is that the issue tracked in #434 ? From the history in that bug it seems like it's not always reproducible which makes me dubious that this PR fixes it.

If you can confirm that #434 is still broken on 0.7.15 and using just this PR fixes the problem I'm happy to mark it as fixed so it gets closed when this is merged.

Also fixes crashes in loading Sonic Heroes!

@vanderleivieirainacio is that the issue tracked in #434 ? From the history in that bug it seems like it's not always reproducible which makes me dubious that this PR fixes it.

If you can confirm that #434 is still broken on 0.7.15 and using just this PR fixes the problem I'm happy to mark it as fixed so it gets closed when this is merged.

You're right, both Van Helsing and Sonic Heroes are already fixed in version 0.7.15 my friend. It was my mistake, I should have checked earlier. Well, Van Helsing and Sonic Heroes work now, no breakages. Thanks for the work friend.

Note that HW results differ substantially from xemu due to the fact that xemu treats the color surface format as the definitive output whereas this seems to be configured separately on nv2a (it's possible to instruct the HW to write to the backbuffer in R5G5B5 format but still display the content as ARGB, resulting in a squashed, color shifted framebuffer).

We could emulate this behavior, but for now let's ignore this pathological case :)

You missed this #694