https://forum.qt.io/topic/72744/qt-canvas3d-calling-gl-colormask-or-gl-depthmask-even-with-gl-true-for-all-args-breaks-all-further-rendering
Qt Canvas3D: Calling gl.colorMask or gl.depthMask, even with gl.TRUE for all args, breaks all...
Nov 3, 2016 - I've distilled this to a completely trivial testcase. First I setup all low-level stuff like shaders, vertex buffers and matrices. Then I enable all four arg...