[vtk-developers] HiDPI / Retina displays and vtkTextActors
allison.vacanti at kitware.com
Wed Oct 11 16:05:43 EDT 2017
Have you tried setting the DPI on the render window (vtkWindow::SetDPI)?
The text actors should respect that.
On Wed, Oct 11, 2017 at 3:44 PM, Sean McBride <sean at rogue-research.com>
> Hi all,
> We've been testing our app against VTK git master and have run into one
> HiDPI/Retina issue.
> In the attached screenshot (hopefully not too big for the list) we see two
> identical render windows except that the left one has Retina enabled, and
> the right one has it disabled. (Indeed we see less aliasing with the left
> But notice the vtkTextActors. The string appears half size in the left
> view. I argue this is a bug. To be clear, in both cases, we specified
> It does not seem desirable to have to provide a different value to
> SetFontSize() depending on the display type (HiDPI or not). With no other
> actor type, like the cones, does the display type matter.
> Presumably some code somewhere takes that font size and computes how many
> pixels tall/wide to make the text onscreen. Perhaps it should doing
> something extra now? I'm not sure how we should deal with this, so am here
> to discuss...
> Sean McBride, B. Eng sean at rogue-research.com
> Rogue Research www.rogue-research.com
> Mac Software Developer Montréal, Québec, Canada
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