ref: 98543a898dbbfe789f13e9aad8a803bffaf08837
dir: /r_draw.c/
//**************************************************************************
//**
//** r_draw.c : Heretic 2 : Raven Software, Corp.
//**
//** $Revision: 373 $
//** $Date: 2009-05-19 21:14:28 +0300 (Tue, 19 May 2009) $
//**
//**************************************************************************
#include "h2stdinc.h"
#ifndef RENDER3D
#include "h2def.h"
#include "r_local.h"
/*
All drawing to the view buffer is accomplished in this file. The other refresh
files only know about ccordinates, not the architecture of the frame buffer.
*/
int viewwidth, scaledviewwidth, viewheight, viewwindowx, viewwindowy;
byte *ylookup[MAXHEIGHT];
int columnofs[MAXWIDTH];
byte *tinttable; // used for translucent sprites
/*
==================
=
= R_DrawColumn
=
= Source is the top of the column to scale
=
==================
*/
lighttable_t *dc_colormap;
int dc_x;
int dc_yl;
int dc_yh;
fixed_t dc_iscale;
fixed_t dc_texturemid;
byte *dc_source; // first pixel in a column (possibly virtual)
//int dccount; // just for profiling
//#ifndef __i386
//#ifndef __m68k
void R_DrawColumn (void)
{
int count;
byte *dest;
fixed_t frac, fracstep;
count = dc_yh - dc_yl;
if (count < 0)
return;
#ifdef RANGECHECK
if ((unsigned)dc_x >= SCREENWIDTH || dc_yl < 0 || dc_yh >= SCREENHEIGHT)
I_Error ("R_DrawColumn: %i to %i at %i", dc_yl, dc_yh, dc_x);
#endif
dest = ylookup[dc_yl] + columnofs[dc_x];
fracstep = dc_iscale;
frac = dc_texturemid + (dc_yl - centery)*fracstep;
do
{
*dest = dc_colormap[dc_source[(frac>>FRACBITS) & 127]];
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
}
//#endif // __m68k
//#endif // __i386
void R_DrawColumnLow (void)
{
int count;
byte *dest;
fixed_t frac, fracstep;
count = dc_yh - dc_yl;
if (count < 0)
return;
#ifdef RANGECHECK
if ((unsigned)dc_x >= SCREENWIDTH || dc_yl < 0 || dc_yh >= SCREENHEIGHT)
I_Error ("R_DrawColumn: %i to %i at %i", dc_yl, dc_yh, dc_x);
// dccount++;
#endif
dest = ylookup[dc_yl] + columnofs[dc_x];
fracstep = dc_iscale;
frac = dc_texturemid + (dc_yl - centery)*fracstep;
do
{
*dest = dc_colormap[dc_source[(frac>>FRACBITS) & 127]];
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
}
/*
#define FUZZTABLE 50
#define FUZZOFF (SCREENWIDTH)
static int fuzzoffset[FUZZTABLE] =
{
FUZZOFF,-FUZZOFF,FUZZOFF,-FUZZOFF,FUZZOFF,FUZZOFF,-FUZZOFF,
FUZZOFF,FUZZOFF,-FUZZOFF,FUZZOFF,FUZZOFF,FUZZOFF,-FUZZOFF,
FUZZOFF,FUZZOFF,FUZZOFF,-FUZZOFF,-FUZZOFF,-FUZZOFF,-FUZZOFF,
FUZZOFF,-FUZZOFF,-FUZZOFF,FUZZOFF,FUZZOFF,FUZZOFF,FUZZOFF,-FUZZOFF,
FUZZOFF,-FUZZOFF,FUZZOFF,FUZZOFF,-FUZZOFF,-FUZZOFF,FUZZOFF,
FUZZOFF,-FUZZOFF,-FUZZOFF,-FUZZOFF,-FUZZOFF,FUZZOFF,FUZZOFF,
FUZZOFF,FUZZOFF,-FUZZOFF,FUZZOFF,FUZZOFF,-FUZZOFF,FUZZOFF
};
static int fuzzpos = 0;
*/
void R_DrawFuzzColumn (void)
{
int count;
byte *dest;
fixed_t frac, fracstep;
if (!dc_yl)
dc_yl = 1;
if (dc_yh == viewheight - 1)
dc_yh = viewheight - 2;
count = dc_yh - dc_yl;
if (count < 0)
return;
#ifdef RANGECHECK
if ((unsigned)dc_x >= SCREENWIDTH || dc_yl < 0 || dc_yh >= SCREENHEIGHT)
I_Error ("R_DrawFuzzColumn: %i to %i at %i", dc_yl, dc_yh, dc_x);
#endif
dest = ylookup[dc_yl] + columnofs[dc_x];
fracstep = dc_iscale;
frac = dc_texturemid + (dc_yl - centery)*fracstep;
// OLD FUZZY INVISO SPRITE STUFF
/*
do
{
*dest = colormaps[6*256 + dest[fuzzoffset[fuzzpos]]];
if (++fuzzpos == FUZZTABLE)
fuzzpos = 0;
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
*/
do
{
*dest = tinttable[*dest + (dc_colormap[dc_source[(frac>>FRACBITS) & 127]]<<8)];
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
}
//============================================================================
//
// R_DrawAltFuzzColumn
//
//============================================================================
void R_DrawAltFuzzColumn (void)
{
int count;
byte *dest;
fixed_t frac, fracstep;
if (!dc_yl)
dc_yl = 1;
if (dc_yh == viewheight - 1)
dc_yh = viewheight - 2;
count = dc_yh - dc_yl;
if (count < 0)
return;
#ifdef RANGECHECK
if ((unsigned)dc_x >= SCREENWIDTH || dc_yl < 0 || dc_yh >= SCREENHEIGHT)
I_Error ("R_DrawFuzzColumn: %i to %i at %i", dc_yl, dc_yh, dc_x);
#endif
dest = ylookup[dc_yl] + columnofs[dc_x];
fracstep = dc_iscale;
frac = dc_texturemid + (dc_yl - centery)*fracstep;
do
{
*dest = tinttable[((*dest)<<8) + dc_colormap[dc_source[(frac>>FRACBITS) & 127]]];
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
}
/*
========================
=
= R_DrawTranslatedColumn
=
========================
*/
byte *dc_translation;
byte *translationtables;
void R_DrawTranslatedColumn (void)
{
int count;
byte *dest;
fixed_t frac, fracstep;
count = dc_yh - dc_yl;
if (count < 0)
return;
#ifdef RANGECHECK
if ((unsigned)dc_x >= SCREENWIDTH || dc_yl < 0 || dc_yh >= SCREENHEIGHT)
I_Error ("R_DrawColumn: %i to %i at %i", dc_yl, dc_yh, dc_x);
#endif
dest = ylookup[dc_yl] + columnofs[dc_x];
fracstep = dc_iscale;
frac = dc_texturemid + (dc_yl - centery)*fracstep;
do
{
*dest = dc_colormap[dc_translation[dc_source[frac>>FRACBITS]]];
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
}
//============================================================================
//
// R_DrawTranslatedFuzzColumn
//
//============================================================================
void R_DrawTranslatedFuzzColumn (void)
{
int count;
byte *dest;
fixed_t frac, fracstep;
count = dc_yh - dc_yl;
if (count < 0)
return;
#ifdef RANGECHECK
if ((unsigned)dc_x >= SCREENWIDTH || dc_yl < 0 || dc_yh >= SCREENHEIGHT)
I_Error ("R_DrawColumn: %i to %i at %i", dc_yl, dc_yh, dc_x);
#endif
dest = ylookup[dc_yl] + columnofs[dc_x];
fracstep = dc_iscale;
frac = dc_texturemid + (dc_yl - centery)*fracstep;
do
{
*dest = tinttable[((*dest)<<8) + dc_colormap[dc_translation[dc_source[frac>>FRACBITS]]]];
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
}
//============================================================================
//
// R_DrawTranslatedAltFuzzColumn
//
//============================================================================
/*
void R_DrawTranslatedAltFuzzColumn (void)
{
int count;
byte *dest;
fixed_t frac, fracstep;
count = dc_yh - dc_yl;
if (count < 0)
return;
#ifdef RANGECHECK
if ((unsigned)dc_x >= SCREENWIDTH || dc_yl < 0 || dc_yh >= SCREENHEIGHT)
I_Error ("R_DrawColumn: %i to %i at %i", dc_yl, dc_yh, dc_x);
#endif
dest = ylookup[dc_yl] + columnofs[dc_x];
fracstep = dc_iscale;
frac = dc_texturemid + (dc_yl - centery)*fracstep;
do
{
*dest = tinttable[*dest + (dc_colormap[dc_translation[dc_source[frac>>FRACBITS]]]<<8)];
dest += SCREENWIDTH;
frac += fracstep;
} while (count--);
}
*/
//--------------------------------------------------------------------------
//
// PROC R_InitTranslationTables
//
//--------------------------------------------------------------------------
/* version 1.0 wad has 9 lumps: trantbl0 ... trantbl8 */
#if 0
static byte transtable10[256 * 3 * (MAXPLAYERS_10 - 1)] =
{
# include "transtb10.h"
};
#endif
/* version 1.1 wad has 21 lumps: trantbl0 .. trantbl9
and trantbla .. trantblk */
#if (MAXPLAYERS == MAXPLAYERS_11)
static byte transtable11[256 * 3 * (MAXPLAYERS_11 - 1)] =
{
# include "transtb11.h"
};
#define TRANTBL11_OFS (256 * 3 * (MAXPLAYERS_10 - 1))
#define TRANTBL11_CNT (256 * 3 * (MAXPLAYERS_11 - MAXPLAYERS_10))
#endif
void R_InitTranslationTables (void)
{
int i;
byte *transLump;
// Load tint table
tinttable = (byte *) W_CacheLumpName("TINTTAB", PU_STATIC);
// Allocate translation tables
translationtables = (byte *) Z_Malloc(256 * 3 * (MAXPLAYERS - 1) + 255, PU_STATIC, NULL);
translationtables = (byte *)(((intptr_t)translationtables + 255) & ~255);
for (i = 0; i < 3 * (MAXPLAYERS - 1); i++)
{
#if (MAXPLAYERS == MAXPLAYERS_11)
if (oldwad_10 && i == 3 * (MAXPLAYERS_10 - 1))
{
/* HACK !! --- old 1.0 wad doesn't have TRANTBL9
* to TRANTBLK. Let's just copy from
* the extracted v1.1 data. */
memcpy (translationtables + TRANTBL11_OFS,
transtable11 + TRANTBL11_OFS, TRANTBL11_CNT);
break;
}
#endif /* 8-players */
transLump = (byte *) W_CacheLumpNum(W_GetNumForName("trantbl0") + i, PU_STATIC);
memcpy(translationtables + i*256, transLump, 256);
Z_Free(transLump);
}
}
/*
================
=
= R_DrawSpan
=
================
*/
int ds_y;
int ds_x1;
int ds_x2;
lighttable_t *ds_colormap;
fixed_t ds_xfrac;
fixed_t ds_yfrac;
fixed_t ds_xstep;
fixed_t ds_ystep;
byte *ds_source; // start of a 64*64 tile image
//int dscount; // just for profiling
//#ifndef __i386
//#ifndef __m68k
void R_DrawSpan (void)
{
fixed_t xfrac, yfrac;
byte *dest;
int count, spot;
#ifdef RANGECHECK
if (ds_x2 < ds_x1 || ds_x1 < 0 || ds_x2 >= SCREENWIDTH || (unsigned)ds_y > SCREENHEIGHT)
I_Error ("R_DrawSpan: %i to %i at %i", ds_x1, ds_x2, ds_y);
// dscount++;
#endif
xfrac = ds_xfrac;
yfrac = ds_yfrac;
dest = ylookup[ds_y] + columnofs[ds_x1];
count = ds_x2 - ds_x1;
do
{
spot = ((yfrac>>(16-6)) & (63*64)) + ((xfrac>>16) & 63);
*dest++ = ds_colormap[ds_source[spot]];
xfrac += ds_xstep;
yfrac += ds_ystep;
} while (count--);
}
//#endif
//#endif
void R_DrawSpanLow (void)
{
fixed_t xfrac, yfrac;
byte *dest;
int count, spot;
#ifdef RANGECHECK
if (ds_x2 < ds_x1 || ds_x1 < 0 || ds_x2 >= SCREENWIDTH || (unsigned)ds_y > SCREENHEIGHT)
I_Error ("R_DrawSpan: %i to %i at %i", ds_x1, ds_x2, ds_y);
// dscount++;
#endif
xfrac = ds_xfrac;
yfrac = ds_yfrac;
dest = ylookup[ds_y] + columnofs[ds_x1];
count = ds_x2 - ds_x1;
do
{
spot = ((yfrac>>(16-6)) & (63*64)) + ((xfrac>>16) & 63);
*dest++ = ds_colormap[ds_source[spot]];
xfrac += ds_xstep;
yfrac += ds_ystep;
} while (count--);
}
/*
================
=
= R_InitBuffer
=
=================
*/
void R_InitBuffer (int width, int height)
{
int i;
viewwindowx = (SCREENWIDTH - width) >> 1;
for (i = 0; i < width; i++)
columnofs[i] = viewwindowx + i;
if (width == SCREENWIDTH)
viewwindowy = 0;
else
viewwindowy = (SCREENHEIGHT - SBARHEIGHT - height) >> 1;
for (i = 0; i < height; i++)
ylookup[i] = screens + (i + viewwindowy)*SCREENWIDTH;
}
/*
==================
=
= R_DrawViewBorder
=
= Draws the border around the view for different size windows
==================
*/
boolean BorderNeedRefresh;
void R_DrawViewBorder (void)
{
byte *src, *dest;
int x, y;
if (scaledviewwidth == SCREENWIDTH)
return;
src = (byte *) W_CacheLumpName("F_022", PU_CACHE);
dest = screens;
for (y = 0 ; y < SCREENHEIGHT - SBARHEIGHT; y++)
{
for (x = 0; x < SCREENWIDTH/64; x++)
{
memcpy (dest, src + ((y & 63)<<6), 64);
dest += 64;
}
if (SCREENWIDTH & 63)
{
memcpy (dest, src + ((y & 63)<<6), SCREENWIDTH & 63);
dest += (SCREENWIDTH & 63);
}
}
for (x = viewwindowx; x < viewwindowx + viewwidth; x += 16)
{
V_DrawPatch(x, viewwindowy - 4, (patch_t *)W_CacheLumpName("bordt", PU_CACHE));
V_DrawPatch(x, viewwindowy + viewheight, (patch_t *)W_CacheLumpName("bordb", PU_CACHE));
}
for (y = viewwindowy; y < viewwindowy + viewheight; y += 16)
{
V_DrawPatch(viewwindowx - 4, y, (patch_t *)W_CacheLumpName("bordl", PU_CACHE));
V_DrawPatch(viewwindowx+viewwidth, y, (patch_t *)W_CacheLumpName("bordr", PU_CACHE));
}
V_DrawPatch(viewwindowx - 4, viewwindowy - 4, (patch_t *)W_CacheLumpName("bordtl", PU_CACHE));
V_DrawPatch(viewwindowx + viewwidth, viewwindowy - 4, (patch_t *)W_CacheLumpName("bordtr", PU_CACHE));
V_DrawPatch(viewwindowx + viewwidth, viewwindowy + viewheight, (patch_t *)W_CacheLumpName("bordbr", PU_CACHE));
V_DrawPatch(viewwindowx - 4, viewwindowy + viewheight, (patch_t *)W_CacheLumpName("bordbl", PU_CACHE));
}
/*
==================
=
= R_DrawTopBorder
=
= Draws the top border around the view for different size windows
==================
*/
boolean BorderTopRefresh;
void R_DrawTopBorder (void)
{
byte *src, *dest;
int x, y;
if (scaledviewwidth == SCREENWIDTH)
return;
src = (byte *) W_CacheLumpName("F_022", PU_CACHE);
dest = screens;
for (y = 0; y < 34; y++)
{
for (x = 0; x < SCREENWIDTH/64; x++)
{
memcpy (dest, src + ((y & 63)<<6), 64);
dest += 64;
}
if (SCREENWIDTH & 63)
{
memcpy (dest, src + ((y & 63)<<6), SCREENWIDTH & 63);
dest += (SCREENWIDTH & 63);
}
}
if (viewwindowy < 35)
{
for (x = viewwindowx; x < viewwindowx + viewwidth; x += 16)
{
V_DrawPatch(x, viewwindowy - 4, (patch_t *)W_CacheLumpName("bordt", PU_CACHE));
}
V_DrawPatch(viewwindowx-4, viewwindowy, (patch_t *)W_CacheLumpName("bordl", PU_CACHE));
V_DrawPatch(viewwindowx + viewwidth, viewwindowy, (patch_t *)W_CacheLumpName("bordr", PU_CACHE));
V_DrawPatch(viewwindowx - 4, viewwindowy + 16, (patch_t *)W_CacheLumpName("bordl", PU_CACHE));
V_DrawPatch(viewwindowx + viewwidth, viewwindowy + 16, (patch_t *)W_CacheLumpName("bordr", PU_CACHE));
V_DrawPatch(viewwindowx - 4, viewwindowy - 4, (patch_t *)W_CacheLumpName("bordtl", PU_CACHE));
V_DrawPatch(viewwindowx + viewwidth, viewwindowy - 4, (patch_t *)W_CacheLumpName("bordtr", PU_CACHE));
}
}
#endif /* RENDER3D */