Fixed Shader program error in some very specific context

[skymen]

I had a bug in my level editor project and in Under The Red Sky and I finally figured out what's wrong.

All of the following needs to be true:

• Running on MacOS
• 2D layer at the bottom
• 3D layer on top with force own texture
• 3D object in the project
• Too many objects are being rendered (I'm guessing it needs to break the batch)

I finally found that the issue was the monkeypatch inside of the 3D object addon, and I replaced the code for it with this one.

I have not extensively tested it at all but this seems to be working properly.

Here is the project file for the repro to test:
test buffer overdraw simple (1).zip

[MikalDev]

Looks good. My one thought for discussion is the perf cost of switching shaders. Need to do some perf tests with and without this change.

[skymen]

If the perf cost of switching shaders is too much, we can always disable/enable the uniforms that are not being used

[skymen]

Yo @MikalDev did you ever find time to look into this?

If not I can just fork your addon and maintain my own version for a while

[MikalDev]

oooops forgot about this let me take a peek today