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Rev | Author | Line No. | Line |
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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 | } |