On 09/23/2016 08:08 AM, Phaedra Narayna wrote:
Hi,
I have a OSMesa bug when trying to create a virtual window that is more
than 16384 pixel in height , see below :
*Command:*
#headless_shell --screenshot --window-size="1920x16385"
--hide-scrollbars --no-sandbox http://linuxfr.org
*Error Msg:*
[0920/154515:ERROR:gl_context_osmesa.cc(72)] OSMesaMakeCurrent failed.
[0920/154515:ERROR:gles2_cmd_decoder.cc(4992)] GLES2DecoderImpl: Context
lost because context no longer current after resize callback.
[0920/154515:ERROR:gles2_cmd_decoder.cc(5108)] Error: 5 for Command
kResizeCHROMIUM
[0920/154515:ERROR:gl_context_osmesa.cc(72)] OSMesaMakeCurrent failed.
I am using OSMesa on Archlinux :
https://www.archlinux.org/packages/extra/i686/mesa/ , mesa 12.0.3-1 as
this time of writing.
I have checked with the HeadLess Chromium project as per this thread:
https://groups.google.com/a/chromium.org/forum/#!topic/headless-dev/t0ixeHXCzK0
I have checked with the Skia project as per this thread :
https://bugs.chromium.org/p/skia/issues/detail?id=580&can=2&start=0&num=100&q=label%3AHotlist-Fixit&colspec=ID%20Type%20Status%20Priority%20M%20Area%20Owner%20Summary&groupby=&sort=
Any idea on how to solve this problem?
There's always a limit on max surface/rendering size because of
rasterization and interpolation limitations.
I don't know which driver you're using, but if you query the
GL_MAX_FRAMEBUFFER_WIDTH and GL_MAX_FRAMEBUFFER_HEIGHT you can find the
limits.
If you need to render a larger image, you'll probably have to break up
the image into tiles which are rendered individually. Here's an old
project of mine that might help: http://www.mesa3d.org/brianp/TR.html
-Brian
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