Based On The Embedded System OpenGL Anti-aliasing Technology Research And Application

In the existing system, the graphics embedded graphics that occupies a more and more important role. Especially in some special embedded graphics system, such as the cockpit shows the picture, the plane flying attitude is more complex, in order to be able to reflect the posture, so the real time requirement in the cockpit of a graphics graphic picture in real-time, and smooth to dynamic and clear displayed. Show the picture quality and character generator (hardware structure and graphics generation algorithms about. Airborne LCD display in because the rotation of characters, scale line because the resolution of the display when the grating limit and the existing graphics, jagged its shape phenomenon, serious aliasing will influence of aircraft pilots phenomenon of attitude of judgment, causing the hidden trouble even flight accident flying. According to the domestic and foreign cockpit display technology, OpenGL graphics technology and the development of the current situation of anti-aliasing algorithm, this paper choose VxWorks embedded operating system as the operating system, the application of the hardware graphics anti aliasing algorithm design that satisfy cockpit display system graphics screen. In this paper, the results including the following respects:Anti-aliasing is based on a variety of methods are compared, and research and improvement on the original Bresenham line generation algorithm, using multiple pixel drawing a straight line, effectively avoid the occurrence of the original Bresenham line generation algorithm of sawtooth phenomenon. Based on vc++platform in the use of anti-aliasing graphics drawing algorithm procedures to anti-aliasing algorithm before using the graphics program generator comparison, using anti aliasing algorithm generated graphics basic solve the original graphics drawing process obvious problem, the graphics aliasing graphics serrated significantly weakened, and at the same time phenomenon verified Bresenham linear anti aliasing algorithm and character anti aliasing feasibility and effectiveness of the algorithm.In order to verify the improvement Bresenham linear anti aliasing algorithm and character anti aliasing algorithm in the portability of hardware system, this paper MPC8245assessment of choosing the current board as characters graphics hardware system, combining the generator embedded operating system VxWorks completed anti aliasing PowerPC algorithm in hardware platform of the simulation test and algorithm, using OpenGL standard transplant graphics libraries drawings, graphic display effect is good.