64 lines
2.9 KiB
Plaintext
64 lines
2.9 KiB
Plaintext
This file contains information on the current implementation of the DirectDraw
|
|
API.
|
|
|
|
The DirectDraw API is being used in a lot of current computergames. Its API
|
|
layer is represented by the functions in the Win32 DLL ddraw.dll and the
|
|
IDirectDraw* interfaces (that can be created using the API functions).
|
|
|
|
WINE currently implements a very basic set of the DirectDraw functionality
|
|
in graphics/ddraw.c. This implementation uses the XFree86-DGA extension
|
|
to get very fast access to the graphics card framebuffer and doublebuffering
|
|
features. It is as fast as the MS equivalent for the stuff that is implemented.
|
|
Several applications already work, see below.
|
|
Problems of the implementation using XFree86-DGA:
|
|
|
|
- XFree86 cannot switch resolution nor depth on the fly.
|
|
This is a problem with X and unavoidable.
|
|
Current solution is to pop up a MessageBox with an error for
|
|
mismatched parameters and advice the user to restart the X server
|
|
with the specified depth and/or screensize.
|
|
- The rest of the functionality that has to be implemented will have
|
|
to be done in software and will be very slow.
|
|
- This requires WINE to be run as root user so XF86DGA can mmap the
|
|
framebuffer into the addressspace of the process.
|
|
- Blocks all other X windowed applications.
|
|
|
|
Status:
|
|
- Diablo [640x480x8]:
|
|
The movies play with speed comparable to the MS DDRAW one.
|
|
The game doesn't work, it somehow tries to write into 2 lines _BEFORE_
|
|
the start of the surface. I have tried to investigate this, but it is
|
|
in code that is automatically generated.
|
|
|
|
- WingCommander 4 / Win95 Patch [640x480x8]:
|
|
The intromovie plays, in 8 bit mode (to reconfigure wc4, run wine
|
|
"wc4w.exe -I"). The 16bit mode looks broken on Mystique, but I think
|
|
this is due to the unusual colorweight (565 rgb) of the Mystique in 16bit
|
|
mode. [Specifying it in DDPIXELFORMAT didn't help.]
|
|
|
|
Requires to be run in 640x480xdepth mode (doesn't seem to heed
|
|
DDSURFACEDESC.lPitch).
|
|
You can even fly the first mission with Maniac (ignore the weird sounds),
|
|
but it crashes as soon as you arrive at Blue Point Station...
|
|
|
|
- Monkey Island 3 [640x480x8]:
|
|
WINE-CVS-981116:
|
|
Works, using DGA and Xlib. (Mousecontrol is a bit off in windowed mode.)
|
|
|
|
- DiscWorld 2 [640x480x8]:
|
|
Plays through nearly all intro movies. Sound and animation skip a lot of
|
|
stuff (possible DirectSound asynchronization problem).
|
|
|
|
- XvT [640x480x16]:
|
|
Shows the splash screen, then fails with missing Joystick. I have
|
|
investigated but failed to find a reason for this.
|
|
|
|
- Tomb Raider 2 Demo (using 8 bit renderer) [640x480x8]:
|
|
I have played nearly all of the DEMO level using Keyboard Controls.
|
|
Sound is a bit weird. Keyboard/Mouse handling too due to incomplete
|
|
DirectInput.
|
|
|
|
- WingCommander Prophecy Demo (using software renderer) [640x480x16]:
|
|
Plays trailer, hangs in selection screen (no keyboard input, DirectInput
|
|
problem).
|