The frustum_top and frustum_bottom assignments in mjv_updateCamera used the wrong elements of the zver array, causing the principal point cy offset to be applied with an inverted sign. This shifted the rendered image vertically by 2*cy pixels.
PiperOrigin-RevId: 813119377 Change-Id: Iebff9e7796ca9809ea22902522982bfd96eeba06
PiperOrigin-RevId: 812776271 Change-Id: Ic9456ab201610a69237182ac22147e3d3e240308
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