[PATCH] wined3d/resource: Performance improvement

Sun Jul 3 04:55:34 CDT 2016

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Am 2016-07-03 um 10:04 schrieb Henri Verbeet:
> Finally, there the possibility that Windows filters invalid flag
> combinations like Wine currently does, and picking either DISCARD
> or NOOVERWRITE will break an application that depends on that.
When I originally added support for dynamic buffers in 2010 or so I
just forwarded the flags to the driver. That did break some
applications. I'll try to find out which one it was, I believe I put
some details in the patch description.

It's also possible that there are some differences between textures
and buffers. In d3d <= 9, D3DLOCK_NOOVERWRITE is not supported on
textures. So it might be filtered out, and DISCARD prevails. But my
understanding is that Unigine uses the questionable combination on
buffers, not textures.