[Mesa3d-users] Is Off-screen rendering possible with EGL and OpenVG?

[Nicholas L. <Nic...@gm...>]

I'm attempting to develop off-screen rendering using OpenVG but am having
trouble (I'm new to the whole graphics universe...surfaces, contexts,
windows, oy!).

Off-screen rendering means a PBuffer but I can only bind a VGImage to a
Pbuffer.  So what about VGPaths?  I can render a blue triangle on-screen and
now I'm trying to render ultimately to a ppm file.  Therefore I need to know
the location of the data, but all I have is the EGLDisplay, EGLSurface (a
Pbuffer, right?) and EGLContext.  There's no opportunity for me to malloc
some memory and use it.

The only thing I can think to maybe try is draw my VGPath to presumably the
surface, then call either vgReadPixels to add it to memory and then create a
ppm file.  Does that make sense?
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