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Add support for accelerated scrolling in the "direct" window surface
implementation. Using vgCopyPixels(), the already rasterized content on
the surface can be shifted to a new location such that only a portion
of the suqsequent frame needs to be repainted instead of the entire
frame.
This only works when the "preserved" EGL swap behavior is enabled and
the impact on performance is highly dependant on the specific hardware
platform in use.
Task-number: QT-2972
Reviewed-by: Rhys Weatherley
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If the size of the window changes, then there is a chance that this
will require a re-allocation so it's better to handle the re-allocation
here when the window size has changed because we don't want the error
to occur in eglSwapBuffers.
Reviewed-by: TrustMe
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Some OpenVG GPU's have limitations on the amount of memory
available to create VGImage's. When the memory runs out,
vgCreateImage() will fail.
This change introduces QVGImagePool, which keeps track of all
QVGPixmapData image allocations and ejects least-recently-used
pixmaps when GPU memory is exhausted.
Task-number: QT-2554
Reviewed-by: trustme
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Reviewed-by: TrustMe
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On the Mac, it means "-framework ApplicationServices -framework Carbon
-framework AppKit" are no longer part of the default LIBS in Qt
applications. This required a lot of fixes where we used Mac-specific
code in Qt.
On X11, it was very straightforward, because we apparently use very
little of X11 outside QtGui.
I haven't changed the Windows-specific LIBS paths, because I don't
know how Windows behaves. Windows has DLLs, but it links to static
"import" libraries. So is it static linking or dynamic linking?
Reviewed-By: Marius Storm-Olsen
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ShivaVG runs on top of OpenGL. Include the QMAKE_*_OPENGL flags
on the link line if it is needed by the OpenVG engine.
Reviewed-by: trustme
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This change also moves the EGL support classes from QtOpenGL to QtGui
so they can be shared between OpenGL and OpenVG.
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