am be29d82f: Merge "Correctly adjust clip regions that lie offscreen" into jb-mr1-dev

    if (scissorEnabled && (x != mScissorX || y != mScissorY ||

            width != mScissorWidth || height != mScissorHeight)) {

        if (x < 0) x = 0;

        if (y < 0) y = 0;

        if (x < 0) {

            width += x;

            x = 0;

        }

        if (y < 0) {

            height += y;

            y = 0;

        }

        if (width < 0) {

            width = 0;

        }

        if (height < 0) {

            height = 0;

        }

        glScissor(x, y, width, height);

        mScissorX = x;