Add GL-renderer support to headless backend
To implement #278 (closed), add EGL surfaceless platform and pbuffer output support in GL-renderer, and let headless-backend initialize it.
This MR depends on:
Edited by Pekka Paalanen
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To implement #278 (closed), add EGL surfaceless platform and pbuffer output support in GL-renderer, and let headless-backend initialize it.
This MR depends on: