Lines 309–313 of https://chromium.googlesource.com/angle/angle/+/0af35c748e210290e4a4d51e0958baef867bf9e7/include/EGL/eglext.h(I chose a specific commit instead of "master" to be sure everyone will see the same file no matter how much time passes) suggest there's no way to enforce Direct3D 9 backend. And, to be honest, I don't see any good reason for Qt to expose that part of EGL context creation — it's not Qt's business what EGL/GLES implementation is actually used (IMHO everything that's supposed to use OpenGL ES should rely exclusively on its specifications with conformance being a concern of particular implementation's developers).
On Sat, Jan 25, 2014 at 7:39 PM, Thomas Sevaldrud <tho...@silentwings.no>wrote: > Thanks, I'll take a look at that extension. It could definitely be what > I'm looking for :-) > > It is a concern with the backend being either DX9 or DX11 though, but at > least when using ANGLE directly I think you can choose which backend you > want to use. Not sure if/how that is exposed through Qt or the EGL APIs > though. > > - Thomas > > > On Sat, Jan 25, 2014 at 2:01 AM, Constantin Makshin <cmaks...@gmail.com>wrote: > >> Ah, ignore my previous message, I misunderstood the original question >> (really shouldn't be wandering around the Internet at ~5AM :) ). >> >> Function eglQuerySurfacePointerANGLE() from ANGLE's EGL extension " >> EGL_ANGLE_query_surface_pointer" may be what you're looking for. >> On Jan 24, 2014 8:57 PM, "Thomas Sevaldrud" <tho...@silentwings.no> >> wrote: >> >>> Hello, >>> >>> I know that what I'm about to ask is somewhat of a heresy, but is there >>> a way to access to the IDirect3DSurface9 used as a back buffer by the ANGLE >>> OpenGL Wrapper in Qt? >>> >>> The ultimate goal of this hack is to integrate a QWindow into a WPF >>> application. I know this sounds real evil, but the WPF requirement is way >>> out of my control, and I would really like to avoid copying the frame >>> buffer via system memory. By using the D3DSurface I can simply plug it into >>> a D3DImage in .NET (I've done this with other D3D applications before, so I >>> know it works) >>> >>> I've been digging around in the Qt code but this far I haven't been able >>> to figure out exactly how ANGLE is initialized and where it fits into the >>> rest of everything. >>> >>> Any insight into this would be greatly appreciated. >>> >>> - Thomas >>> >>> _______________________________________________ >>> Interest mailing list >>> Interest@qt-project.org >>> http://lists.qt-project.org/mailman/listinfo/interest >>> >>> >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest >> >> >
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