introlab
Regarding the issue of updating iOS sample programs (upgrading to Metal as OpenGL ES is deprecated)
Is it possible to update the iOS sample program to a version that uses Metal for graphic rendering After all, Open GL ES has been deprecated by the new version of iOS for a long time.
That would be a significant change and add more maintenance time. The reason why we still keep OpenGL ES is that same rendering code can be shared with the Android App. I don't have experience with Metal, so it is difficult for me to estimate how much time would be required to convert the C++ OpenGL ES code to Metal (maybe metal-cpp to replace opengl es more easily). I tagged this issue as "enhancement".
Other references:
- https://stackoverflow.com/questions/59547620/how-do-i-convert-opengles-shaders-to-metal-compatible-ones
I would like to point out that based on my experience it would be better in terms of performance that you try to rewrite the shaders yourself.
- https://moltengl.com/moltengl/
- https://github.com/KhronosGroup/MoltenVK
