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bmp2font: explain

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Nero 2020-03-16 17:24:16 +00:00
parent 764950b2a1
commit 65be1051b3
1 changed files with 10 additions and 0 deletions
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bmp2font.c
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@ -1,3 +1,13 @@
/* This script os meant to convert a 256x256 pixel bitmap into an bitmap of
* 8x8 pixel characters. When deciding upon the output format, i had the
* video output of scanlines in mind. So there are 8 sections for each row
* of pixels for a character cell, each secton containing the the pixel line
* data of all 256 character codes. If you align this blob to 256-bytes, you
* quickly fetch the data by pointing bx to the begin of the section for the
* pixel line you are currently drawing, then set bl to the character value
* you want to print and dereference [bx].
*/
#include <stdio.h> #include <stdio.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>