The following functions provide support for hardware double buffering on display devices that have two display buffers. Hardware double buffering is used to achieve flicker free animation, but drawing to a hidden portion of display memory and then instantly updating the screen by changing the visible display page to the previously hidden display page. You can also use the MGL_setDisplayStart function to scroll around within a hardware scrolling or panning device context. For combining hardware scrolling and double buffering, you can use MGL_setDisplayStart and MGL_setVisualPage together.
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