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Thanks! I needed reflection to get the old callback I called defaultCharCallback in my code as it is is not accessible in my subclass as it is package private. Yes,...

I suppose you mean this one: [PixelBufferObjectTest.java](https://github.com/libgdx/libgdx/blob/master/tests/gdx-tests/src/com/badlogic/gdx/tests/gles3/PixelBufferObjectTest.java) That is a nice example for how to use PBOs to upload textures asynchronouly and indicates that the offset parameter for glTexImage2D and...

Yes, it seems to be a MacOS-only issue. Thank you for the insights. I share your opinion that it would be nice if libGDX would work with GL30 on all...

Hi, thank you for your fast response. The VAO thing sounds related since that's what differentiates the SpriteBatch implementation when using gles3 instead of gles2. I did some more thorough...

I made an interesting observation. Commenting out the following three lines in SpriteBatch.flush() fixes the performance issues completely regardless of which VertexDataType is used: ```java Buffer indicesBuffer = (Buffer)mesh.getIndicesBuffer(true); indicesBuffer.position(0);...

Indeed, not marking the buffer as changed also fixes the issue.