2 //**************************************************************************
4 //** v_video.c : Heretic 2 : Raven Software, Corp.
11 //**************************************************************************
15 #define SC_INDEX 0x3c4
21 byte gammatable[5][256] =
23 {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255},
25 {2,4,5,7,8,10,11,12,14,15,16,18,19,20,21,23,24,25,26,27,29,30,31,32,33,34,36,37,38,39,40,41,42,44,45,46,47,48,49,50,51,52,54,55,56,57,58,59,60,61,62,63,64,65,66,67,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,163,164,165,166,167,168,169,170,171,172,173,174,175,175,176,177,178,179,180,181,182,183,184,185,186,186,187,188,189,190,191,192,193,194,195,196,196,197,198,199,200,201,202,203,204,205,205,206,207,208,209,210,211,212,213,214,214,215,216,217,218,219,220,221,222,222,223,224,225,226,227,228,229,230,230,231,232,233,234,235,236,237,237,238,239,240,241,242,243,244,245,245,246,247,248,249,250,251,252,252,253,254,255},
27 {4,7,9,11,13,15,17,19,21,22,24,26,27,29,30,32,33,35,36,38,39,40,42,43,45,46,47,48,50,51,52,54,55,56,57,59,60,61,62,63,65,66,67,68,69,70,72,73,74,75,76,77,78,79,80,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,133,134,135,136,137,138,139,140,141,142,143,144,144,145,146,147,148,149,150,151,152,153,153,154,155,156,157,158,159,160,160,161,162,163,164,165,166,166,167,168,169,170,171,172,172,173,174,175,176,177,178,178,179,180,181,182,183,183,184,185,186,187,188,188,189,190,191,192,193,193,194,195,196,197,197,198,199,200,201,201,202,203,204,205,206,206,207,208,209,210,210,211,212,213,213,214,215,216,217,217,218,219,220,221,221,222,223,224,224,225,226,227,228,228,229,230,231,231,232,233,234,235,235,236,237,238,238,239,240,241,241,242,243,244,244,245,246,247,247,248,249,250,251,251,252,253,254,254,255},
29 {8,12,16,19,22,24,27,29,31,34,36,38,40,41,43,45,47,49,50,52,53,55,57,58,60,61,63,64,65,67,68,70,71,72,74,75,76,77,79,80,81,82,84,85,86,87,88,90,91,92,93,94,95,96,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,135,136,137,138,139,140,141,142,143,143,144,145,146,147,148,149,150,150,151,152,153,154,155,155,156,157,158,159,160,160,161,162,163,164,165,165,166,167,168,169,169,170,171,172,173,173,174,175,176,176,177,178,179,180,180,181,182,183,183,184,185,186,186,187,188,189,189,190,191,192,192,193,194,195,195,196,197,197,198,199,200,200,201,202,202,203,204,205,205,206,207,207,208,209,210,210,211,212,212,213,214,214,215,216,216,217,218,219,219,220,221,221,222,223,223,224,225,225,226,227,227,228,229,229,230,231,231,232,233,233,234,235,235,236,237,237,238,238,239,240,240,241,242,242,243,244,244,245,246,246,247,247,248,249,249,250,251,251,252,253,253,254,254,255},
31 {16,23,28,32,36,39,42,45,48,50,53,55,57,60,62,64,66,68,69,71,73,75,76,78,80,81,83,84,86,87,89,90,92,93,94,96,97,98,100,101,102,103,105,106,107,108,109,110,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,128,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,143,144,145,146,147,148,149,150,150,151,152,153,154,155,155,156,157,158,159,159,160,161,162,163,163,164,165,166,166,167,168,169,169,170,171,172,172,173,174,175,175,176,177,177,178,179,180,180,181,182,182,183,184,184,185,186,187,187,188,189,189,190,191,191,192,193,193,194,195,195,196,196,197,198,198,199,200,200,201,202,202,203,203,204,205,205,206,207,207,208,208,209,210,210,211,211,212,213,213,214,214,215,216,216,217,217,218,219,219,220,220,221,221,222,223,223,224,224,225,225,226,227,227,228,228,229,229,230,230,231,232,232,233,233,234,234,235,235,236,236,237,237,238,239,239,240,240,241,241,242,242,243,243,244,244,245,245,246,246,247,247,248,248,249,249,250,250,251,251,252,252,253,254,254,255,255}
34 //---------------------------------------------------------------------------
38 // Draws a column based masked pic to the screen.
40 //---------------------------------------------------------------------------
42 void V_DrawPatch(int x, int y, patch_t *patch)
52 y -= SHORT(patch->topoffset);
53 x -= SHORT(patch->leftoffset);
54 if(x < 0 || x+SHORT(patch->width) > SCREENWIDTH || y < 0
55 || y+SHORT(patch->height) > SCREENHEIGHT)
57 I_Error("Bad V_DrawPatch");
60 desttop = screen+y*SCREENWIDTH+x;
61 w = SHORT(patch->width);
62 for(; col < w; x++, col++, desttop++)
64 column = (column_t *)((byte *)patch+LONG(patch->columnofs[col]));
65 // Step through the posts in a column
66 while(column->topdelta != 0xff)
68 source = (byte *)column+3;
69 dest = desttop+column->topdelta*SCREENWIDTH;
70 count = column->length;
76 column = (column_t *)((byte *)column+column->length+4);
86 = Masks a column based translucent masked pic to the screen.
90 extern byte *tinttable;
92 void V_DrawFuzzPatch (int x, int y, patch_t *patch)
96 byte *desttop, *dest, *source;
99 y -= SHORT(patch->topoffset);
100 x -= SHORT(patch->leftoffset);
102 if (x<0||x+SHORT(patch->width) >SCREENWIDTH || y<0 || y+SHORT(patch->height)>SCREENHEIGHT
104 I_Error ("Bad V_DrawPatch");
107 desttop = screen+y*SCREENWIDTH+x;
109 w = SHORT(patch->width);
110 for ( ; col<w ; x++, col++, desttop++)
112 column = (column_t *)((byte *)patch + LONG(patch->columnofs[col]));
114 // step through the posts in a column
116 while (column->topdelta != 0xff )
118 source = (byte *)column + 3;
119 dest = desttop + column->topdelta*SCREENWIDTH;
120 count = column->length;
124 *dest = tinttable[*dest + ((*source++)<<8)];
127 column = (column_t *)((byte *)column+column->length+4);
137 = Masks a column based translucent masked pic to the screen.
141 extern byte *tinttable;
143 void V_DrawAltFuzzPatch (int x, int y, patch_t *patch)
147 byte *desttop, *dest, *source;
150 y -= SHORT(patch->topoffset);
151 x -= SHORT(patch->leftoffset);
153 if (x<0||x+SHORT(patch->width) >SCREENWIDTH || y<0
154 || y+SHORT(patch->height)>SCREENHEIGHT
157 I_Error ("Bad V_DrawPatch");
161 desttop = screen+y*SCREENWIDTH+x;
163 w = SHORT(patch->width);
164 for ( ; col<w ; x++, col++, desttop++)
166 column = (column_t *)((byte *)patch + LONG(patch->columnofs[col]));
168 // step through the posts in a column
170 while (column->topdelta != 0xff )
172 source = (byte *)column + 3;
173 dest = desttop + column->topdelta*SCREENWIDTH;
174 count = column->length;
178 *dest = tinttable[((*dest)<<8) + *source++];
181 column = (column_t *)((byte *)column+column->length+4);
189 = V_DrawShadowedPatch
191 = Masks a column based masked pic to the screen.
196 void V_DrawShadowedPatch(int x, int y, patch_t *patch)
200 byte *desttop, *dest, *source;
201 byte *desttop2, *dest2;
204 y -= SHORT(patch->topoffset);
205 x -= SHORT(patch->leftoffset);
207 if (x<0||x+SHORT(patch->width) >SCREENWIDTH || y<0 || y+SHORT(patch->height)>SCREENHEIGHT
209 I_Error ("Bad V_DrawPatch");
212 desttop = screen+y*SCREENWIDTH+x;
213 desttop2 = screen+(y+2)*SCREENWIDTH+x+2;
215 w = SHORT(patch->width);
216 for ( ; col<w ; x++, col++, desttop++, desttop2++)
218 column = (column_t *)((byte *)patch + LONG(patch->columnofs[col]));
220 // step through the posts in a column
222 while (column->topdelta != 0xff )
224 source = (byte *)column + 3;
225 dest = desttop + column->topdelta*SCREENWIDTH;
226 dest2 = desttop2 + column->topdelta*SCREENWIDTH;
227 count = column->length;
231 *dest2 = tinttable[((*dest2)<<8)];
232 dest2 += SCREENWIDTH;
237 column = (column_t *)( (byte *)column + column->length
243 //---------------------------------------------------------------------------
245 // PROC V_DrawRawScreen
247 //---------------------------------------------------------------------------
249 void V_DrawRawScreen(byte *raw)
251 memcpy(screen, raw, SCREENWIDTH*SCREENHEIGHT);
254 //---------------------------------------------------------------------------
258 //---------------------------------------------------------------------------
262 // I_AllocLow will put screen in low dos memory on PCs.
263 screen = I_AllocLow(SCREENWIDTH*SCREENHEIGHT);