- opengl_end_frame() bound framebuffer 0 on Android, which has no valid
target there (real presentation goes through the OpenXR swapchain's own
FBOs) - gl4es reported this every frame. Skip it there.
- render_hack_cameras() re-entered opengl_start_frame()/opengl_end_frame()
for camera-monitor renders that never touch the GL screen; excluded them
to match use_opengl()'s existing behavior. Also drains a stray error left
by xrPollEvent().
- ChangeScreenSize() never called opengl_resize() on Android, freezing the
3D render target at launch size after an in-game resolution change; and
xr_get_game_resolution() used the swapchain's fixed size instead of the
current screen resolution, misplacing the laser-pointer cursor after such
a change.
- Removes all temporary bisection diagnostics added while tracking down the
GL_INVALID_OPERATION source.
ml