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Fix widget retina scaling (#9243) 

For normal cairo-widgets ardour should not use image surfaces on macOS,
because that bypasses retina scaling. In theory explicit upsampling could
be performed (compere to openGL/cairo), but for the case at hand that is
overkill and inconvenient.

Performance critical widgets that render periodically can enable openGL
backing. Casual widgets (buttons with text, knobs, sliders etc) can be
rendered directly without any significant performance penalty.
This commit is contained in:
Robin Gareus 2023-02-17 15:41:12 +01:00
parent 9df3058cd8
commit cba8fd090f
1 changed files with 3 additions and 1 deletions
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4
libs/gtkmm2ext/cairo_widget.cc
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@ -63,7 +63,9 @@ CairoWidget::CairoWidget ()
, _current_parent (0)
, _canvas_widget (false)
, _nsglview (0)
#ifdef USE_CAIRO_IMAGE_SURFACE
#ifdef __APPLE__
, _use_image_surface (false)
#elif defined USE_CAIRO_IMAGE_SURFACE
, _use_image_surface (true)
#else
, _use_image_surface (NULL != getenv("ARDOUR_IMAGE_SURFACE"))