Am Dienstag, 1. April 2008 07:20:44 schrieb Jason Green: Did you take a look at the various capability flags? I think the test as you submitted it is correct for dx9 level cards and drivers, but there are a few capability flags like D3DDEVCAPS2_CANSTRETCHRECTFROMTEXTURE or similar. Also some drivers seem to refuse StretchRecting between offscreenplain surfaces, even if no stretching is used.
Do you have any ideas what the scheme behind the allowed/forbidden blits is? So far I can see this:
-> Blitting to a rendertarget surface/texture is always OK -> blitting between offscreen surfaces is ok as long as no stretching occurs -> blitting to non-RT surfaces/textures faily, except the above
Did you test blitting from/to sysmem surfaces? The msdn says both must be D3DPOOL_DEFAULT as far as I remember
On Tue, Apr 1, 2008 at 5:45 AM, Stefan Dösinger stefan@codeweavers.com wrote:
Am Dienstag, 1. April 2008 07:20:44 schrieb Jason Green: Did you take a look at the various capability flags? I think the test as you submitted it is correct for dx9 level cards and drivers, but there are a few capability flags like D3DDEVCAPS2_CANSTRETCHRECTFROMTEXTURE or similar. Also some drivers seem to refuse StretchRecting between offscreenplain surfaces, even if no stretching is used.
Yeah, I meant to make a comment about that as a TODO, but I didn't have any cards lying around that didn't advertise that cap. If anyone does, it'd be interesting to see how Windows handles some of those cases. I'd guess it would be just like MSDN claims, but you never know until you actually test it.
Do you have any ideas what the scheme behind the allowed/forbidden blits is? So far I can see this:
-> Blitting to a rendertarget surface/texture is always OK -> blitting between offscreen surfaces is ok as long as no stretching occurs -> blitting to non-RT surfaces/textures faily, except the above
Yeah - turns out that MSDN was correct on this scheme:
http://msdn2.microsoft.com/en-us/library/bb174471(VS.85).aspx
These tests show that the results of the dx9 drivers are valid according to that page.
Did you test blitting from/to sysmem surfaces? The msdn says both must be D3DPOOL_DEFAULT as far as I remember
Yep - I probably should have left a few tests in there for that, but the only surfaces that are valid to call StretchRect on must be in D3DPOOL_DEFAULT (both source and destination). Everything else fails.
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Jason Green -
Stefan Dösinger