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<DIV><FONT face=Arial size=2><FONT face=Arial size=2>Hello,</FONT></DIV>
<DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am a contractor for a company in the UK. I
have developed a 3D module for an oil reservoir visualisation program on Windows
that is now required to run on Linux. The Wine port has been very
successful (it started a month or so ago), but I'm having a couple of
DirectX-related problems. <FONT face=Arial size=2>We're using DirectX 9, the
LinuxOS is Fedora Core 6, the Wine version is 0.9.32, and we're only using the
binary loader, i.e. we're simply running our Windows executable under Wine.
</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT size=2><FONT face=Arial>The problems I'm having relate to calling
IDirect3DSurface9::GetDC() on an offscreen surface, which doesn't appear to
work, and to calling IDirect3DDevice9::CreateStateBlock() with D3DSBBT_ALL,
which appears to hang the program. I've had a look in the bug lists, but I
didn't see anything relating to these issues. I'd greatly appreciate any
information anyone has on these two issues. I'd also appreciate any information
on how the DirectX to OpenGL translation is implemented. For example, does Wine
use hardware-accelerated OpenGL?</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Our program was initially affected by Wine bug
2398, i.e. the bug that causes the OpenGL window to occupy the whole application
window. We got round this by first rendering to an offscreen surface, copying
the offscreen surface to a bitmap, and then blitting the bitmap to the window.
It is of course slower but its acceptable for us and gives us nice MDI behaviour
under Wine. However, since we mix DirectX and GDI, we would like to use GetDC()
on the offscreen surface. This isn't crucial, but among other things it would
allow us to blit the offscreen surface into the bitmap, rather than using
IDirect3DSurface9::LockRect() and copying it pixel by pixel as we're doing at
the moment.</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV> </DIV>
<DIV>Robert Fairlie</DIV>
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