forked from valve/halflife-sdk
841 lines
16 KiB
C
841 lines
16 KiB
C
/***
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*
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* Copyright (c) 1996-2002, Valve LLC. All rights reserved.
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*
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* This product contains software technology licensed from Id
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
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* All Rights Reserved.
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*
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****/
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#include "qlumpy.h"
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#include "math.h"
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#pragma warning (disable : 4244)
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typedef struct
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{
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short ofs, length;
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} row_t;
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typedef struct
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{
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int width, height;
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int widthbits, heightbits;
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unsigned char data[4];
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} qtex_t;
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typedef struct
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{
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int width, height;
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byte data[4]; // variably sized
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} qpic_t;
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// Font stuff
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#define NUM_GLYPHS 256
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const unsigned kFontMarker = 254;
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typedef struct
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{
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short startoffset;
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short charwidth;
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} charinfo;
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typedef struct
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{
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int width, height;
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int rowcount;
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int rowheight;
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charinfo fontinfo[ NUM_GLYPHS ];
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byte data[4];
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} qfont_t;
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extern qboolean fTransparent255;
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#define SCRN(x,y) (*(byteimage+(y)*byteimagewidth+x))
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void GrabPalette16( void );
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extern qboolean do16bit;
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/*
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==============
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GrabRaw
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filename RAW x y width height
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==============
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*/
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void GrabRaw (void)
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{
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int x,y,xl,yl,xh,yh,w,h;
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byte *screen_p;
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int linedelta;
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GetToken (false);
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xl = atoi (token);
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GetToken (false);
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yl = atoi (token);
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GetToken (false);
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w = atoi (token);
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GetToken (false);
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h = atoi (token);
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if (xl == -1)
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{
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xl = yl = 0;
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w = byteimagewidth;
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h = byteimageheight;
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}
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xh = xl+w;
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yh = yl+h;
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screen_p = byteimage + yl*byteimagewidth + xl;
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linedelta = byteimagewidth - w;
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for (y=yl ; y<yh ; y++)
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{
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for (x=xl ; x<xh ; x++)
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{
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*lump_p++ = *screen_p;
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*screen_p++ = 0;
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}
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screen_p += linedelta;
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}
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}
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/*
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==============
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GrabPalette
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filename PALETTE [startcolor endcolor]
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==============
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*/
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void GrabPalette (void)
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{
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int start, end, length;
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if (TokenAvailable())
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{
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GetToken (false);
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start = atoi (token);
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GetToken (false);
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end = atoi (token);
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}
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else
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{
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start = 0;
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end = 255;
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}
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length = 3*(end-start+1);
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memcpy (lump_p, lbmpalette+start*3, length);
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lump_p += length;
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}
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/*
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==============
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GrabPic
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filename qpic x y width height
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==============
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*/
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void GrabPic (void)
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{
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int x,y,xl,yl,xh,yh;
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int width;
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qpic_t *header;
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GetToken (false);
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xl = atoi (token);
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GetToken (false);
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yl = atoi (token);
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GetToken (false);
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xh = xl+atoi (token);
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GetToken (false);
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yh = yl+atoi (token);
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if (xl == -1)
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{
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xl = yl = 0;
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xh = byteimagewidth;
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yh = byteimageheight;
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}
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if (xh<xl || yh<yl || xl < 0 || yl<0) // || xh>319 || yh>239)
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Error ("GrabPic: Bad size: %i, %i, %i, %i",xl,yl,xh,yh);
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//
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// fill in header
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//
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header = (qpic_t *)lump_p;
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width = xh-xl;
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header->width = LittleLong(width);
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header->height = LittleLong(yh-yl);
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//
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// start grabbing posts
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//
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lump_p = (byte *)header->data;
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for (y=yl ; y< yh ; y++)
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for (x=xl ; x<xh ; x++)
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*lump_p++ = SCRN(x,y);
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// New for 16bpp display
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if( do16bit )
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GrabPalette16();
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}
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/*
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=============================================================================
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COLORMAP GRABBING
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=============================================================================
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*/
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/*
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===============
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BestColor
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===============
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*/
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byte BestColor (int r, int g, int b, int start, int stop)
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{
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int i;
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int dr, dg, db;
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int bestdistortion, distortion;
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int bestcolor;
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byte *pal;
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//
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// let any color go to 0 as a last resort
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//
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bestdistortion = ( (int)r*r + (int)g*g + (int)b*b )*2;
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bestcolor = 0;
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pal = lbmpalette + start*3;
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for (i=start ; i<= stop ; i++)
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{
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dr = r - (int)pal[0];
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dg = g - (int)pal[1];
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db = b - (int)pal[2];
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pal += 3;
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distortion = dr*dr + dg*dg + db*db;
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if (distortion < bestdistortion)
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{
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if (!distortion)
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return i; // perfect match
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bestdistortion = distortion;
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bestcolor = i;
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}
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}
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return bestcolor;
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}
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/*
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==============
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GrabColormap
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filename COLORMAP levels fullbrights
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the first map is an identiy 0-255
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the final map is all black except for the fullbrights
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the remaining maps are evenly spread
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fullbright colors start at the top of the palette.
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==============
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*/
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void GrabColormap (void)
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{
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int levels, brights;
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int l, c;
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float frac, red, green, blue;
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GetToken (false);
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levels = atoi (token);
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GetToken (false);
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brights = atoi (token);
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// identity lump
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for (l=0 ; l<256 ; l++)
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*lump_p++ = l;
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// shaded levels
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for (l=1;l<levels;l++)
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{
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frac = 1.0 - (float)l/(levels-1);
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for (c=0 ; c<256-brights ; c++)
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{
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red = lbmpalette[c*3];
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green = lbmpalette[c*3+1];
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blue = lbmpalette[c*3+2];
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red = (int)(red*frac+0.5);
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green = (int)(green*frac+0.5);
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blue = (int)(blue*frac+0.5);
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//
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// note: 254 instead of 255 because 255 is the transparent color, and we
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// don't want anything remapping to that
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//
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*lump_p++ = BestColor(red,green,blue, 0, 254);
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}
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for ( ; c<256 ; c++)
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*lump_p++ = c;
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}
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*lump_p++ = brights;
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}
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/*
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==============
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GrabColormap2
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experimental -- not used by quake
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filename COLORMAP2 range levels fullbrights
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fullbright colors start at the top of the palette.
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Range can be greater than 1 to allow overbright color tables.
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the first map is all 0
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the last (levels-1) map is at range
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==============
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*/
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void GrabColormap2 (void)
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{
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int levels, brights;
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int l, c;
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float frac, red, green, blue;
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float range;
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GetToken (false);
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range = atof (token);
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GetToken (false);
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levels = atoi (token);
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GetToken (false);
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brights = atoi (token);
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// shaded levels
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for (l=0;l<levels;l++)
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{
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frac = range - range*(float)l/(levels-1);
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for (c=0 ; c<256-brights ; c++)
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{
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red = lbmpalette[c*3];
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green = lbmpalette[c*3+1];
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blue = lbmpalette[c*3+2];
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red = (int)(red*frac+0.5);
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green = (int)(green*frac+0.5);
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blue = (int)(blue*frac+0.5);
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//
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// note: 254 instead of 255 because 255 is the transparent color, and we
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// don't want anything remapping to that
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//
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*lump_p++ = BestColor(red,green,blue, 0, 254);
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}
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// fullbrights allways stay the same
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for ( ; c<256 ; c++)
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*lump_p++ = c;
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}
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*lump_p++ = brights;
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}
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/*
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=============================================================================
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MIPTEX GRABBING
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=============================================================================
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*/
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typedef struct
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{
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char name[16];
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unsigned width, height;
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unsigned offsets[4]; // four mip maps stored
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} miptex_t;
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byte pixdata[256];
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float linearpalette[256][3];
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float d_red, d_green, d_blue;
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int colors_used;
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int color_used[256];
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float maxdistortion;
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byte AddColor( float r, float g, float b )
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{
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int i;
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for (i = 0; i < 255; i++)
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{
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if (!color_used[i])
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{
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linearpalette[i][0] = r;
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linearpalette[i][1] = g;
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linearpalette[i][2] = b;
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if (r < 0) r = 0.0;
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if (r > 1.0) r = 1.0;
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lbmpalette[i*3+0] = pow( r, 1.0 / 2.2) * 255;
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if (g < 0) g = 0.0;
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if (g > 1.0) g = 1.0;
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lbmpalette[i*3+1] = pow( g, 1.0 / 2.2) * 255;
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if (b < 0) b = 0.0;
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if (b > 1.0) b = 1.0;
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lbmpalette[i*3+2] = pow( b, 1.0 / 2.2) * 255;
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color_used[i] = 1;
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colors_used++;
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return i;
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}
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}
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return 0;
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}
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/*
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=============
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AveragePixels
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=============
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*/
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byte AveragePixels (int count)
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{
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float r,g,b;
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int i;
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int vis;
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int pix;
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float dr, dg, db;
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float bestdistortion, distortion;
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int bestcolor;
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byte *pal;
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vis = 0;
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r = g = b = 0;
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for (i=0 ; i<count ; i++)
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{
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pix = pixdata[i];
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r += linearpalette[pix][0];
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g += linearpalette[pix][1];
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b += linearpalette[pix][2];
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}
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r /= count;
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g /= count;
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b /= count;
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r += d_red;
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g += d_green;
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b += d_blue;
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//
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// find the best color
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//
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// bestdistortion = r*r + g*g + b*b;
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bestdistortion = 3.0;
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bestcolor = -1;
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for ( i=0; i<255; i++)
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{
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if (color_used[i])
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{
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pix = i; //pixdata[i];
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dr = r - linearpalette[i][0];
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dg = g - linearpalette[i][1];
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db = b - linearpalette[i][2];
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distortion = dr*dr + dg*dg + db*db;
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if (distortion < bestdistortion)
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{
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if (!distortion)
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{
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d_red = d_green = d_blue = 0; // no distortion yet
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return pix; // perfect match
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}
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bestdistortion = distortion;
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bestcolor = pix;
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}
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}
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}
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if (bestdistortion > 0.001 && colors_used < 255)
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{
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// printf("%f %f %f\n", r, g, b );
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bestcolor = AddColor( r, g, b );
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d_red = d_green = d_blue = 0;
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bestdistortion = 0;
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}
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else
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{
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// error diffusion
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d_red = r - linearpalette[bestcolor][0];
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d_green = g - linearpalette[bestcolor][1];
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d_blue = b - linearpalette[bestcolor][2];
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}
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if (bestdistortion > maxdistortion)
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maxdistortion = bestdistortion;
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return bestcolor;
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}
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/*
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==============
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GrabMip
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filename MIP x y width height
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must be multiples of sixteen
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==============
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*/
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void GrabMip (void)
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{
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int i,j,x,y,xl,yl,xh,yh,w,h;
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byte *screen_p, *source, testpixel;
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int linedelta;
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miptex_t *qtex;
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int miplevel, mipstep;
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int xx, yy, pix;
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int count;
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GetToken (false);
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xl = atoi (token);
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GetToken (false);
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yl = atoi (token);
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GetToken (false);
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w = atoi (token);
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GetToken (false);
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h = atoi (token);
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if (xl == -1)
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{
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xl = yl = 0;
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w = byteimagewidth;
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h = byteimageheight;
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}
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if ( (w & 15) || (h & 15) )
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Error ("line %i: miptex sizes must be multiples of 16", scriptline);
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xh = xl+w;
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yh = yl+h;
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qtex = (miptex_t *)lump_p;
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qtex->width = LittleLong(w);
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qtex->height = LittleLong(h);
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strcpy (qtex->name, lumpname);
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lump_p = (byte *)&qtex->offsets[4];
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screen_p = byteimage + yl*byteimagewidth + xl;
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linedelta = byteimagewidth - w;
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source = lump_p;
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qtex->offsets[0] = LittleLong(lump_p - (byte *)qtex);
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for (y=yl ; y<yh ; y++)
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{
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for (x=xl ; x<xh ; x++)
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{
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pix = *screen_p;
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*screen_p++ = 0;
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// if (pix == 255)
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// pix = 0;
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*lump_p++ = pix;
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}
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screen_p += linedelta;
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}
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// calculate gamma corrected linear palette
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for (i = 0; i < 256; i++)
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{
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for (j = 0; j < 3; j++)
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{
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float f;
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f = lbmpalette[i*3+j] / 255.0;
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linearpalette[i][j] = pow(f, 2.2 ); // assume textures are done at 2.2, we want to remap them at 1.0
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}
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}
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maxdistortion = 0;
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if (!fTransparent255)
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{
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// figure out what palette entries are actually used
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colors_used = 0;
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for (i = 0; i < 256; i++)
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color_used[i] = 0;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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if (!color_used[source[ y*w + x]])
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{
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color_used[source[ y*w + x]] = 1;
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colors_used++;
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}
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}
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}
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}
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else
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{
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// assume palette full if it's a transparent texture
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colors_used = 256;
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for (i = 0; i < 256; i++)
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color_used[i] = 1;
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}
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// printf("colors_used %d : ", colors_used );
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//
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// subsample for greater mip levels
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//
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for (miplevel = 1 ; miplevel<4 ; miplevel++)
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{
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int pixTest;
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d_red = d_green = d_blue = 0; // no distortion yet
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qtex->offsets[miplevel] = LittleLong(lump_p - (byte *)qtex);
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mipstep = 1<<miplevel;
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pixTest = (int)( (float)(mipstep * mipstep) * 0.4 ); // 40% of pixels
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for (y=0 ; y<h ; y+=mipstep)
|
|
{
|
|
for (x = 0 ; x<w ; x+= mipstep)
|
|
{
|
|
count = 0;
|
|
for (yy=0 ; yy<mipstep ; yy++)
|
|
for (xx=0 ; xx<mipstep ; xx++)
|
|
{
|
|
testpixel = source[ (y+yy)*w + x + xx ];
|
|
|
|
// If 255 is not transparent, or this isn't a transparent pixel, add it in to the image filter
|
|
if ( !fTransparent255 || testpixel != 255 ) {
|
|
pixdata[count] = testpixel;
|
|
count++;
|
|
}
|
|
}
|
|
if ( count <= pixTest ) // Solid pixels account for < 40% of this pixel, make it transparent
|
|
{
|
|
*lump_p++ = 255;
|
|
}
|
|
else
|
|
{
|
|
*lump_p++ = AveragePixels (count);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// printf(" %d %f\n", colors_used, maxdistortion );
|
|
|
|
if( do16bit )
|
|
GrabPalette16();
|
|
}
|
|
|
|
|
|
/*
|
|
=============================================================================
|
|
|
|
PALETTE GRABBING
|
|
|
|
=============================================================================
|
|
*/
|
|
|
|
|
|
void GrabPalette16( void )
|
|
{
|
|
int i;
|
|
|
|
// Write out palette in 16bit mode
|
|
*(unsigned short *) lump_p = 256; // palette size
|
|
lump_p += sizeof(short);
|
|
|
|
memcpy( lump_p, lbmpalette, 768 );
|
|
lump_p += 768;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
=============================================================================
|
|
|
|
FONT GRABBING
|
|
|
|
=============================================================================
|
|
*/
|
|
|
|
|
|
/*
|
|
==============
|
|
GrabFont
|
|
|
|
font x y width height startglyph
|
|
==============
|
|
*/
|
|
void GrabFont( void )
|
|
{
|
|
int x, y, y2, xl, x2, yl, xh, yh, i, j;
|
|
int index, offset;
|
|
int width;
|
|
int iCurX; // current x in destination
|
|
int iMaxX; // max x in destination
|
|
|
|
byte *pbuf, *pCur;
|
|
qfont_t *header;
|
|
|
|
|
|
iMaxX = 255;
|
|
iCurX = 0;
|
|
|
|
// Set up header
|
|
header = (qfont_t *)lump_p;
|
|
memset( header, 0, sizeof(qfont_t) );
|
|
|
|
GetToken( false );
|
|
header->width = header->rowheight = atoi( token ); //mwh why does width equal rowheight?
|
|
header->height = 1;
|
|
lump_p = (byte *)header->data;
|
|
pCur = (byte *)lump_p;
|
|
memset( lump_p, 0xFF, 256 * 160);
|
|
|
|
GetToken( false );
|
|
index = atoi( token );
|
|
|
|
while( index != -1 )
|
|
{
|
|
// Get/Process source bitmap coordinates
|
|
GetToken (false);
|
|
xl = atoi (token);
|
|
GetToken (false);
|
|
yl = atoi (token);
|
|
GetToken (false);
|
|
xh = xl-1+atoi (token);
|
|
GetToken (false);
|
|
yh = atoi (token) - 1;
|
|
if (xl == -1)
|
|
{
|
|
xl = yl = 0;
|
|
xh = byteimagewidth;
|
|
yh = byteimageheight;
|
|
}
|
|
|
|
if( xh<xl || yh<yl || xl < 0 || yl<0 )
|
|
Error( "GrabFont line %1: Bad size: %i, %i, %i, %i", scriptline, xl, yl, xh, yh );
|
|
|
|
//
|
|
// Fill in font information
|
|
// Create a bitmap that is up to 256 wide and as tall as we need to accomadate the font.
|
|
// We limit the bitmap to 256 because some 3d boards have problems with textures bigger
|
|
// than that.
|
|
//
|
|
for( y=yl; y<yh; y+=header->rowheight+1 )
|
|
{
|
|
// Make sure we're at a marker
|
|
if( y != yl )
|
|
{
|
|
for( y2=y-header->rowheight; y2<yh; y2++ )
|
|
if( kFontMarker == (unsigned) SCRN(xl,y2) )
|
|
break;
|
|
|
|
if( y2 == yh )
|
|
break;
|
|
else if( y2 != y )
|
|
Error( "GrabFont line %d: rowheight doesn't seem to match bitmap (%d, %d)\n", scriptline, y, y2 );
|
|
}
|
|
|
|
for( x=xl; x<xh; )
|
|
{
|
|
// find next marker
|
|
for( x2=x+1; x2<xh; x2++ )
|
|
if( kFontMarker == (unsigned) SCRN(x2,y) )
|
|
break;
|
|
|
|
// check for end of row
|
|
if( x2 == xh )
|
|
break;
|
|
|
|
// Set up glyph information
|
|
if( index >= NUM_GLYPHS )
|
|
{
|
|
printf( "GrabFont: Glyph out of range\n" );
|
|
goto getout;
|
|
}
|
|
|
|
// Fill in glyph info
|
|
header->fontinfo[ index ].charwidth = x2 - x - 1;
|
|
|
|
// update header
|
|
|
|
// output glyph data
|
|
iCurX += header->fontinfo[index].charwidth;
|
|
|
|
// Will this glyph fit on this row?
|
|
if (iCurX >= iMaxX)
|
|
{
|
|
// Nope -- move to next row
|
|
pCur = (byte *)lump_p + 256 * header->rowheight * header->height;
|
|
header->height++;
|
|
iCurX = header->fontinfo[index].charwidth;
|
|
}
|
|
|
|
// copy over the glyph bytes
|
|
pbuf = pCur;
|
|
header->fontinfo[ index ].startoffset = pCur - (byte *) header->data;
|
|
|
|
|
|
for(j = 1; j <= header->rowheight; j++)
|
|
{
|
|
byte *psrc = byteimage + (y + j) * byteimagewidth + (x + 1);
|
|
|
|
for(i = x + 1; i < x2; i++)
|
|
*pbuf++ = *psrc++;
|
|
|
|
pbuf = pCur + j * 256;
|
|
}
|
|
|
|
// move the lump pointer to point at the next possible glyph
|
|
pCur += header->fontinfo[index].charwidth;
|
|
x = x2;
|
|
index++;
|
|
}
|
|
}
|
|
|
|
// Get next ASCII index
|
|
getout:
|
|
GetToken (false);
|
|
index = atoi (token);
|
|
}
|
|
|
|
// advance the lump pointer so that the last row is saved.
|
|
lump_p += (256 * header->rowheight) * header->height;
|
|
|
|
// JAY: Round up to the next power of 2 for GL
|
|
offset = header->height * header->rowheight;
|
|
|
|
y = (offset>128)?256:(offset>64)?128:(offset>32)?64:(offset>16)?32:16;
|
|
if ( offset != y )
|
|
{
|
|
printf("Rounding font from 256x%d to 256x%d\n", offset, y );
|
|
lump_p += (256 * (y - offset));
|
|
}
|
|
header->rowcount = header->height;
|
|
header->height = y;
|
|
|
|
if( do16bit )
|
|
GrabPalette16();
|
|
}
|
|
|