Using HiColor graphics15-bit color-formatRadeon’s 15bpp VESA modes16-bit color-formatRadeon’s 16bpp VESA modesApplication programmingIn-class exercise #1In-class exercise #2Using HiColor graphicsIntroduction to the 15bpp/16bpp SuperVGA graphics modes15-bit color-formatR R R R R G G G G G B B B B B15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0Each pixel is controlled by a two-byte element of display memory according to the format shown above (‘little endian’ convention)Radeon’s 15bpp VESA modes•mode 0x010D: 15-bpp 320x200•mode 0x0193: 15-bpp 320x240•mode 0x01A3: 15-bpp 400x300•mode 0x01B3: 15-bpp 512x384•mode 0x01C3: 15-bpp 640x350 •mode 0x0183: 15-bpp 640x400 •mode 0x0110: 15-bpp 640x480•mode 0x0113: 15-bpp 800x600•mode 0x0116: 15-bpp 1024x768•mode 0x0119: 15-bpp 1280x102416-bit color-formatR R R R R G G G G G G B B B B B15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0Each pixel is controlled by a two-byte element of display memory according to the format shown above (‘little endian’ convention)Radeon’s 16bpp VESA modes•mode 0x010E: 16-bpp 320x200 •mode 0x0194: 16-bpp 320x240 •mode 0x01A4: 16-bpp 400x300 •mode 0x01B4: 16-bpp 512x384 •mode 0x01C4: 16-bpp 640x350 •mode 0x0184: 16-bpp 640x400 •mode 0x0111: 16-bpp 640x480 •mode 0x0114: 16-bpp 800x600 •mode 0x0117: 16-bpp 1024x768 •mode 0x011A: 16-bpp 1280x1024Application programming unsigned short *vram;vram = (unsigned short *)0xA0000000;// For 15bpp color-format unsigned short red = (0x1F << 10); unsigned short green = (0x1F << 5); unsigned short blue = (0x1F << 0); unsigned short white = 0x7FFF;In-class exercise #1•Write a ‘bare-bones’ graphics application that draws a border around the screen•For each of the seven color-combinations named below, draw an array of colored boxes that shows all of the 32 possible intensities of that color:–pure red, pure green, pure blue–blue-and-green, blue-and-red, green-and-red–red-and-green-and-blueIn-class exercise #2•Revise our ‘wfmodel1.cpp’ demo-program so that it uses 15bpp color-format instead of 8bpp color-format (but keep the same 640-by-480
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