gl: On Android when resizing the screen, visual tearing may occur on some devices since clearing the screen is clipped by scissor. So disable it when cleaning up the render pass. #593
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…some devices since clearing the screen is clipped by scissor. So disable it when cleaning up the render pass.
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I think this is because on android the pixels not written to are uninitialized after the surface size is changed. so we want glClear() to affect the whole surface (the width, height used for scissor is correct now but is not guaranteed during the transition frame).