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-rw-r--r--src/hexen/r_draw.c576
1 files changed, 576 insertions, 0 deletions
diff --git a/src/hexen/r_draw.c b/src/hexen/r_draw.c
new file mode 100644
index 00000000..955bbc1b
--- /dev/null
+++ b/src/hexen/r_draw.c
@@ -0,0 +1,576 @@
+
+//**************************************************************************
+//**
+//** r_draw.c : Heretic 2 : Raven Software, Corp.
+//**
+//** $RCSfile: r_draw.c,v $
+//** $Revision: 1.11 $
+//** $Date: 96/01/06 18:37:37 $
+//** $Author: bgokey $
+//**
+//**************************************************************************
+
+#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.
+
+*/
+
+byte *viewimage;
+int viewwidth, scaledviewwidth, viewheight, viewwindowx, viewwindowy;
+byte *ylookup[MAXHEIGHT];
+int columnofs[MAXWIDTH];
+//byte translations[3][256]; // color tables for different players
+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 __WATCOMC__
+#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
+#endif
+
+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)
+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
+};
+int fuzzpos = 0;
+*/
+
+#ifndef __WATCOMC__
+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--);
+}
+#endif
+
+//============================================================================
+//
+// 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
+//
+//--------------------------------------------------------------------------
+
+void R_InitTranslationTables (void)
+{
+ int i;
+ byte *transLump;
+
+ // Load tint table
+ tinttable = W_CacheLumpName("TINTTAB", PU_STATIC);
+
+ // Allocate translation tables
+ translationtables = Z_Malloc(256*3*(MAXPLAYERS-1)+255,
+ PU_STATIC, 0);
+ translationtables = (byte *)(((int)translationtables+255)&~255);
+
+ for(i = 0; i < 3*(MAXPLAYERS-1); i++)
+ {
+ transLump = 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 __WATCOMC__
+#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
+#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] = screen + (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 = W_CacheLumpName("F_022", PU_CACHE);
+ dest = screen;
+
+ 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, W_CacheLumpName("bordt", PU_CACHE));
+ V_DrawPatch(x, viewwindowy+viewheight, W_CacheLumpName("bordb",
+ PU_CACHE));
+ }
+ for(y=viewwindowy; y < viewwindowy+viewheight; y += 16)
+ {
+ V_DrawPatch(viewwindowx-4, y, W_CacheLumpName("bordl", PU_CACHE));
+ V_DrawPatch(viewwindowx+viewwidth, y, W_CacheLumpName("bordr",
+ PU_CACHE));
+ }
+ V_DrawPatch(viewwindowx-4, viewwindowy-4, W_CacheLumpName("bordtl",
+ PU_CACHE));
+ V_DrawPatch(viewwindowx+viewwidth, viewwindowy-4,
+ W_CacheLumpName("bordtr", PU_CACHE));
+ V_DrawPatch(viewwindowx+viewwidth, viewwindowy+viewheight,
+ W_CacheLumpName("bordbr", PU_CACHE));
+ V_DrawPatch(viewwindowx-4, viewwindowy+viewheight,
+ 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;
+
+/* if(shareware)
+ {
+ src = W_CacheLumpName ("FLOOR04", PU_CACHE);
+ }
+ else
+ {
+ src = W_CacheLumpName ("FLAT513", PU_CACHE);
+ }
+*/
+ src = W_CacheLumpName("F_022", PU_CACHE);
+ dest = screen;
+
+ 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, W_CacheLumpName("bordt", PU_CACHE));
+ }
+ V_DrawPatch(viewwindowx-4, viewwindowy, W_CacheLumpName("bordl",
+ PU_CACHE));
+ V_DrawPatch(viewwindowx+viewwidth, viewwindowy,
+ W_CacheLumpName("bordr", PU_CACHE));
+ V_DrawPatch(viewwindowx-4, viewwindowy+16, W_CacheLumpName("bordl",
+ PU_CACHE));
+ V_DrawPatch(viewwindowx+viewwidth, viewwindowy+16,
+ W_CacheLumpName("bordr", PU_CACHE));
+
+ V_DrawPatch(viewwindowx-4, viewwindowy-4, W_CacheLumpName("bordtl",
+ PU_CACHE));
+ V_DrawPatch(viewwindowx+viewwidth, viewwindowy-4,
+ W_CacheLumpName("bordtr", PU_CACHE));
+ }
+}
+
+
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