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3dct / open_iA

A tool for the visual analysis and processing of volumetric datasets, with a focus on industrial computed tomography.
GNU General Public License v3.0
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No text in Charts on AMD graphics card #56

Closed codeling closed 3 years ago

codeling commented 3 years ago

There seems to be a problem with OpenGL text rendering on AMD graphics cards (or our usage of the OpenGL commands in Qt); the result is that all text (tick marks, axes labels) are missing in all charts that are built directly on top of Qt's QOpenGLWidget (Histogram, Profile Plot, Scatter Plot Matrices).

This started happening somewhere between versions 2020.04 and 2020.09.

This is mainly due to using Qt 5.15; it occasionally also seems to happen when using 5.14.2, but far less frequently; maybe also combining Qt with VTK is a factor; VTK versions probably not. As this does not happen reliably, it is hard to pinpoint the exact cause. For now, we recommend to stick with Qt 5.14.2

codeling commented 3 years ago

Two-parted issue: one is that we were using a surface format with setStereo(true);.

The other issue (only iAQSplom) - we're using deprecated OpenGL functionality.

codeling commented 3 years ago

setStereo issue fixed in 1ab98280.

Scatter plot OpenGL rewrite will be tracked in a separate issue: https://github.com/3dct/open_iA/issues/58