The original render_gl3.c code does the following:
```
mjr_setf4(plane, 0.5*scl[0], 0, 0, -0.5);
glTexGenfv(GL_S, GL_OBJECT_PLANE, plane);
mjr_setf4(plane, 0, -0.5*scl[1], 0, -0.5);
glTexGenfv(GL_T, GL_OBJECT_PLANE, plane);
```
The 4th component of the GL_OBJECT_PLANE function effectively
describes a UV-offset for the generates uvs. In our filament
implementation, we had overlooked this 4th component.
PiperOrigin-RevId: 863181644
Change-Id: I60688117ea2019257da683cdda0c7d389dd5af1e
Haroon Qureshi
e35c981f48