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Handbook Phần Cứng PU part 28

Tham khảo tài liệu 'handbook phần cứng pu part 28', công nghệ thông tin, phần cứng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | As chip process technology improved it eventually became possible to move drawing and BitBLT functions onto the same board and eventually into the same chip as a regular frame buffer controller such as VGA. These cut-down 2D accelerators were not as flexible as microprocessor-based GPUs but were much easier to make and sell. edit 1980s The Commodore Amiga was the first mass-market computer to include a blitter in its video hardware and IBM s 8514 graphics system was one of the first PC video cards to implement 2D primitives in hardware. The Amiga was unique for the time in that it featured what would now be recognised as a full video accelerator offloading practically all video generation functions to hardware. This video hardware included a fast blitter a hardware sprite engine a display port scrolling engine and hardware resources to draw lines fills and other primitives. Prior and quite some time after on most systems the CPU had to draw the display. edit 1990s By the early 1990s the rise of Microsoft Windows sparked a surge of interest in high-speed high-resolution 2D bitmapped graphics which had previously been the domain of Unix workstations and the Apple Macintosh . For the PC market the dominance of Windows meant PC graphics vendors could now focus development effort on a single programming interface Graphics Device Interface GDI . In 1991 S3 Graphics introduced the first single-chip 2D accelerator the S3 86C911 which its designers named after the Porsche 911 as an indication of the speed increase it promised . The 86C911 spawned a host of imitators by 1995 all major PC graphics chip makers had added 2D acceleration support to their chips. By this time fixed-function Windows accelerators had surpassed expensive general-purpose graphics coprocessors in Windows performance and these coprocessors faded away from the PC market. Throughout the 1990s 2D GUI acceleration continued to evolve. As manufacturing capabilities improved so did the level of integration of