On 2016-07-03 11:55 AM, Stefan Dösinger wrote:
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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.
It uses both flags on buffers in d3d9 mode. I'm going to add tests for it.
Regards, Patrick
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Patrick Rudolph