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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 169 | giacomo | 1 | /* VGAlib version 1.2 - (c) 1993 Tommy Frandsen */ |
| 2 | /* */ |
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| 3 | /* This library is free software; you can redistribute it and/or */ |
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| 4 | /* modify it without any restrictions. This library is distributed */ |
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| 5 | /* in the hope that it will be useful, but without any warranty. */ |
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| 6 | |||
| 7 | /* Multi-chipset support Copyright 1993 Harm Hanemaayer */ |
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| 8 | /* partially copyrighted (C) 1993 by Hartmut Schirmer */ |
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| 9 | |||
| 10 | #include <stdlib.h> |
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| 11 | |||
| 12 | #include "vga.h" |
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| 13 | #include "libvga.h" |
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| 14 | |||
| 15 | int vga_setrgbcolor(int r, int g, int b) |
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| 16 | { |
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| 17 | switch (CI.colors) { |
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| 18 | case 32768: |
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| 19 | COL = |
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| 20 | (b >> 3) + |
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| 21 | ((g >> 3) << 5) + |
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| 22 | ((r >> 3) << 10); |
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| 23 | break; |
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| 24 | case 65536: |
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| 25 | COL = |
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| 26 | (b >> 3) + |
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| 27 | ((g >> 2) << 5) + |
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| 28 | ((r >> 3) << 11); |
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| 29 | break; |
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| 30 | case 1 << 24: |
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| 31 | COL = b + (g << 8) + (r << 16); |
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| 32 | break; |
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| 33 | default: |
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| 34 | return 0; |
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| 35 | } |
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| 36 | return COL; |
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| 37 | } |
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| 38 | |||
| 39 | static const unsigned char ega_red[16] = |
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| 40 | {0, 0, 0, 0, 168, 168, 168, 168, 84, 84, 84, 84, 255, 255, 255, 255}; |
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| 41 | static const unsigned char ega_green[16] = |
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| 42 | {0, 0, 168, 168, 0, 0, 84, 168, 84, 84, 255, 255, 84, 84, 255, 255}; |
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| 43 | static const unsigned char ega_blue[16] = |
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| 44 | {0, 168, 0, 168, 0, 168, 0, 168, 84, 255, 84, 255, 84, 255, 84, 255}; |
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| 45 | |||
| 46 | int vga_setegacolor(int c) |
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| 47 | { |
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| 48 | if (c < 0) |
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| 49 | c = 0; |
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| 50 | else if (c > 15) |
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| 51 | c = 15; |
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| 52 | switch (CI.colors) { |
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| 53 | case 1 << 15: |
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| 54 | case 1 << 16: |
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| 55 | case 1 << 24: |
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| 56 | return vga_setrgbcolor(ega_red[c], ega_green[c], ega_blue[c]); |
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| 57 | } |
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| 58 | vga_setcolor(c); |
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| 59 | return c; |
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| 60 | } |