Compile errors in WaveformRendererTextured when building for iOS (OpenGL ES 3.0)

[fwcd]

Bug Description

Parts of the new waveform renderer unfortunately no longer build for iOS (and possibly other platforms using OpenGL ES):

We might have to investigate which parts to cond-compile out when using GL ES (e.g. testing for QT_OPENGL_ES_2).

Version

fwcd@ea5e980 (based on c368119)

OS

macOS 14.5

[Swiftb0y]

maybe just a transitive header dependency thats not fulfilled because the required #include has been compiled out (unnecessarily)?

[fwcd]

Doesn't seem so unfortunately, it looks like these are APIs unavailable in OpenGL ES (including OpenGLES/ES3/gl.h doesn't change anything, also other function calls like glBindTexture seem to work as expected).

Edit: https://docs.gl seems to confirm that functions like glBegin are missing in ES.

[fwcd]

A potential future refactoring is tracked by

• Support textured waveforms on OpenGL ES platforms #13385