ref: 7338feb3744ed2f0a63bababbbdf3d55de143bb6
dir: /v_video.c/
// V_video.c
#include "h2stdinc.h"
#include "doomdef.h"
#define SC_INDEX 0x3c4
int usegamma;
byte gammatable[5][256] =
{
{ 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
},
{ 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
},
{ 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
},
{ 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
},
{ 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
}
};
#if defined(RENDER3D)
void V_Init(void)
{
/* OpenGL: NOTHING TO DO HERE. */
}
#else /* RENDER3D */
byte *screens;
int dirtybox[4];
//---------------------------------------------------------------------------
//
// PROC V_Init
//
//---------------------------------------------------------------------------
void V_Init(void)
{
// I_AllocLow will put screen in low dos memory on PCs.
screens = I_AllocLow(SCREENWIDTH*SCREENHEIGHT);
}
//---------------------------------------------------------------------------
//
// PROC V_DrawPatch
//
// Draws a column based masked pic to the screen.
//
//---------------------------------------------------------------------------
void V_DrawPatch(int x, int y, patch_t *patch)
{
int count;
int col;
column_t *column;
byte *desttop;
byte *dest;
byte *source;
int w;
y -= SHORT(patch->topoffset);
x -= SHORT(patch->leftoffset);
if (x < 0 || x + SHORT(patch->width) > SCREENWIDTH || y < 0
|| y + SHORT(patch->height) > SCREENHEIGHT)
{
I_Error("Bad V_DrawPatch");
}
col = 0;
desttop = screens + y*SCREENWIDTH + x;
w = SHORT(patch->width);
for ( ; col < w; x++, col++, desttop++)
{
column = (column_t *)((byte *)patch + LONG(patch->columnofs[col]));
// Step through the posts in a column
while (column->topdelta != 0xff)
{
source = (byte *)column + 3;
dest = desttop + column->topdelta*SCREENWIDTH;
count = column->length;
while (count--)
{
*dest = *source++;
dest += SCREENWIDTH;
}
column = (column_t *)((byte *)column + column->length + 4);
}
}
}
/*
==================
=
= V_DrawFuzzPatch
=
= Masks a column based translucent masked pic to the screen.
=
==================
*/
extern byte *tinttable;
void V_DrawFuzzPatch (int x, int y, patch_t *patch)
{
int count,col;
column_t *column;
byte *desttop, *dest, *source;
int w;
y -= SHORT(patch->topoffset);
x -= SHORT(patch->leftoffset);
if (x < 0 || x + SHORT(patch->width) > SCREENWIDTH || y < 0
|| y + SHORT(patch->height)> SCREENHEIGHT)
{
I_Error ("Bad V_DrawPatch");
}
col = 0;
desttop = screens + y*SCREENWIDTH + x;
w = SHORT(patch->width);
for ( ; col < w; x++, col++, desttop++)
{
column = (column_t *)((byte *)patch + LONG(patch->columnofs[col]));
// step through the posts in a column
while (column->topdelta != 0xff )
{
source = (byte *)column + 3;
dest = desttop + column->topdelta*SCREENWIDTH;
count = column->length;
while (count--)
{
*dest = tinttable[((*dest)<<8) + *source++];
dest += SCREENWIDTH;
}
column = (column_t *)((byte *)column + column->length + 4);
}
}
}
/*
==================
=
= V_DrawShadowedPatch
=
= Masks a column based masked pic to the screen.
=
==================
*/
void V_DrawShadowedPatch(int x, int y, patch_t *patch)
{
int count,col;
column_t *column;
byte *desttop, *dest, *source;
byte *desttop2, *dest2;
int w;
y -= SHORT(patch->topoffset);
x -= SHORT(patch->leftoffset);
if (x < 0 || x + SHORT(patch->width) > SCREENWIDTH || y < 0
|| y + SHORT(patch->height) > SCREENHEIGHT)
{
I_Error ("Bad V_DrawPatch");
}
col = 0;
desttop = screens+y*SCREENWIDTH+x;
desttop2 = screens+(y+2)*SCREENWIDTH+x+2;
w = SHORT(patch->width);
for ( ; col < w; x++, col++, desttop++, desttop2++)
{
column = (column_t *)((byte *)patch + LONG(patch->columnofs[col]));
// step through the posts in a column
while (column->topdelta != 0xff )
{
source = (byte *)column + 3;
dest = desttop + column->topdelta*SCREENWIDTH;
dest2 = desttop2 + column->topdelta*SCREENWIDTH;
count = column->length;
while (count--)
{
*dest2 = tinttable[((*dest2)<<8)];
dest2 += SCREENWIDTH;
*dest = *source++;
dest += SCREENWIDTH;
}
column = (column_t *)((byte *)column + column->length + 4);
}
}
}
//---------------------------------------------------------------------------
//
// PROC V_DrawRawScreen
//
//---------------------------------------------------------------------------
void V_DrawRawScreen(byte *raw)
{
memcpy(screens, raw, SCREENWIDTH*SCREENHEIGHT);
}
#endif /* ! RENDER3D */