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Packaging changes
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As of 2014-03-22, Cygwin packages have been moved into a custom repository
directory. See http://www.virtualgl.org/Documentation/Cygwin for more details.
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Documentation for this release
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is provided in the binary packages or at:
http://www.virtualgl.org/vgldoc/2_2_1/
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Significant changes since 2.2
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[1]
A 64-bit version of the VirtualGL Client for Exceed is now fully supported.
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[2]
Fixed a severe readback performance problem that occurred whenever an
application set the render mode to GL_SELECT and called glFlush() while doing
front buffer rendering.
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[3]
vglserver_config will now work properly whenever vglgenkey is installed in a
directory other than /usr/bin or /opt/VirtualGL/bin, as long as vglgenkey is
installed in the same directory as vglserver_config.
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[4]
vglconnect now allows the user to specify the directory in which VirtualGL
binaries are installed on the server, rather than always assuming that they are
in /opt/VirtualGL/bin.
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[5]
Fixed issues with vglconnect.bat that occurred when it was installed under
c:\Program Files (x86) on 64-bit Windows systems and invoked with the -x or -s
options.
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[6]
Clarified the documentation of the VGL_DISPLAY option and documented how to use
VirtualGL with multiple graphics cards.
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[7]
VirtualGL will no longer die if glXDestroyContext() is passed a NULL argument.
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[8]
Fixed a BadWindow error that would occur whenever a 3D application attempted to
call glXSwapIntervalSGI() (specifically, this was observed when running
Direct3D applications using WINE 1.3.11 or later.) The nVidia GLX
implementation requires that a window be current (not a Pbuffer) when calling
glXSwapIntervalSGI(), so VirtualGL now interposes that function and makes it
a noop.
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[9]
Fixed an issue whereby, if a 3D application set
GL_{RED|GREEN|BLUE|ALPHA}_SCALE or GL_{RED|GREEN|BLUE|ALPHA}_BIAS to
non-default values, the colors would appear wrong when running the
application in VirtualGL, and the readback performance would be very slow.
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[10]
Fixed an issue whereby 3D applications that requested an overlay visual would
fail with BadRequest or other X11 errors if the 2D X Server lacked GLX support
(as is the case with TurboVNC.) This was caused by the fact that VirtualGL
passes through glXChooseVisual() and related calls to the 2D X Server if it
detects that an overlay visual is being requested. Now, VirtualGL will first
check that the 2D X Server supports GLX before passing through those calls.
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[11]
vglclient -kill and vglclient -killall now work (again) in the Exceed client.
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===============================================================================
Packaging changes
===============================================================================
[1]
Building against libjpeg-turbo 1.1.1 pre-release, which fixes visual artifacts
in JPEG quality levels 98 or higher, visual artifacts in grayscale JPEG
compression caused by a typo in the RGB-to-luminance lookup tables, and a
1-pixel error in row 0, column 21 of the luminance plane generated by the YUV
encoder (which is used in VirtualGL's YUV and XV transports.)
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