Hi Matteo,
Using cairo+OpenVG backend is quite inefficient for two main reasons:
- all persistent objects of OpenVG (paths, paints, fonts,
images, ...) are not used in the right way they have been thought
for (i.e. reuse); for example cairo openvg backend creates /
paints / destroy path every time they appear. OpenVG handles have
been thought to be created once and used multiple times
- adding intermediate layers between application and rendering API
could make the application slower than using the rendering API
directly
in better detail than we could assume in our project, you're
summarising why we, too, came to the conclusion that we would have to
avoid a stack of libraries, if we wanted to extract any performance
from the hardware.
that's why we chose to concentrate on gnash with its existing OpenGL
backend, which was already coupled as directly as possible to the
hardware platform we were given.
- Bernd
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