33bdcfb367
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@3278 fc73d0e0-1445-4013-8a0c-d673dee63da5
668 lines
15 KiB
C
668 lines
15 KiB
C
#include "quakedef.h"
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#ifdef AVAIL_FREETYPE
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#include "glquake.h"
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#include <ft2build.h>
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#include FT_FREETYPE_H
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static FT_Library fontlib;
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#define FONTCHARS (1<<16)
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#define FONTPLANES (1<<2) //no more than 16 textures per font
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#define PLANEIDXTYPE unsigned char
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#define CHARIDXTYPE unsigned short
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#define INVALIDPLANE ((1<<(8*sizeof(PLANEIDXTYPE)))-1)
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#define PLANEWIDTH (1<<8)
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#define PLANEHEIGHT PLANEWIDTH
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#define GEN_CONCHAR_GLYPHS 0 //set to 0 or 1 to define whether to generate glyphs from conchars too, or if it should just draw them as glquake always used to
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extern cvar_t cl_noblink;
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qboolean triedtoloadfreetype;
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dllhandle_t *fontmodule;
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FT_Error (VARGS *pFT_Init_FreeType) (FT_Library *alibrary);
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FT_Error (VARGS *pFT_Load_Char) (FT_Face face, FT_ULong char_code, FT_Int32 load_flags);
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FT_Error (VARGS *pFT_Set_Pixel_Sizes) (FT_Face face, FT_UInt pixel_width, FT_UInt pixel_height);
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FT_Error (VARGS *pFT_New_Face) (FT_Library library, const char *pathname, FT_Long face_index, FT_Face *aface);
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FT_Error (VARGS *pFT_Done_Face) (FT_Face face);
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typedef struct font_s
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{
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struct charcache_s
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{
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struct charcache_s *nextchar;
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PLANEIDXTYPE texplane;
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unsigned char bmx;
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unsigned char bmy;
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unsigned char bmw;
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unsigned char bmh;
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short top;
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short left;
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unsigned char advance; //how wide this char is, when drawn
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char pad;
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} chars[FONTCHARS];
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short charheight;
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FT_Face face;
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} font_t;
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typedef struct {
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int texnum[FONTPLANES];
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unsigned char plane[PLANEWIDTH*PLANEHEIGHT][4]; //tracks the current plane
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PLANEIDXTYPE activeplane;
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unsigned char planerowx;
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unsigned char planerowy;
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unsigned char planerowh;
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qboolean planechanged;
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struct charcache_s *oldestchar;
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struct charcache_s *newestchar;
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} fontplanes_t;
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static fontplanes_t fontplanes;
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void Font_Shutdown(void)
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{
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int i;
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for (i = 0; i < FONTPLANES; i++)
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fontplanes.texnum[i] = 0;
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fontplanes.activeplane = 0;
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fontplanes.oldestchar = NULL;
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fontplanes.newestchar = NULL;
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fontplanes.planechanged = 0;
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fontplanes.planerowx = 0;
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fontplanes.planerowy = 0;
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fontplanes.planerowh = 0;
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}
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void Font_FlushPlane(font_t *f)
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{
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/*
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assumption:
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oldest chars must be of the oldest plane
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*/
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if (fontplanes.planechanged)
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{
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GL_Bind(fontplanes.texnum[fontplanes.activeplane]);
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GL_Upload32(NULL, (void*)fontplanes.plane, PLANEWIDTH, PLANEHEIGHT, false, true);
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fontplanes.planechanged = false;
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}
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fontplanes.activeplane++;
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fontplanes.activeplane = fontplanes.activeplane % FONTPLANES;
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fontplanes.planerowh = 0;
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fontplanes.planerowx = 0;
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fontplanes.planerowy = 0;
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for (; fontplanes.oldestchar; fontplanes.oldestchar = fontplanes.oldestchar->nextchar)
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{
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if (fontplanes.oldestchar->texplane != fontplanes.activeplane)
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break;
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//invalidate it
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fontplanes.oldestchar->texplane = INVALIDPLANE;
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}
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if (!fontplanes.oldestchar)
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fontplanes.newestchar = NULL;
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}
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struct charcache_s *Font_GetChar(font_t *f, CHARIDXTYPE charidx)
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{
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struct charcache_s *c = &f->chars[charidx];
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if (c->texplane == INVALIDPLANE)
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{
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//not cached, can't get.
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return NULL;
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}
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return c;
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}
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struct charcache_s *Font_LoadGlyphData(font_t *f, CHARIDXTYPE charidx, int alphaonly, void *data, unsigned char bmw, unsigned char bmh, unsigned int pitch)
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{
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int x, y;
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unsigned char *out;
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struct charcache_s *c = &f->chars[charidx];
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if (fontplanes.planerowx + (int)bmw >= PLANEWIDTH)
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{
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fontplanes.planerowx = 0;
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fontplanes.planerowy += fontplanes.planerowh;
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fontplanes.planerowh = 0;
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}
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if (fontplanes.planerowy+(int)bmh >= PLANEHEIGHT)
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Font_FlushPlane(f);
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if (fontplanes.newestchar)
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fontplanes.newestchar->nextchar = c;
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else
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fontplanes.oldestchar = c;
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fontplanes.newestchar = c;
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c->nextchar = NULL;
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c->texplane = fontplanes.activeplane;
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c->bmx = fontplanes.planerowx;
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c->bmy = fontplanes.planerowy;
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c->bmw = bmw;
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c->bmh = bmh;
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if (fontplanes.planerowh < (int)bmh)
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fontplanes.planerowh = bmh;
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fontplanes.planerowx += bmw;
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out = (unsigned char *)&fontplanes.plane[c->bmx+(int)c->bmy*PLANEHEIGHT];
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if (alphaonly)
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{
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for (y = 0; y < bmh; y++)
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{
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for (x = 0; x < bmw; x++)
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{
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*(unsigned int *)&out[x*4] = 0xffffffff;
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out[x*4+3] = ((unsigned char*)data)[x];
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}
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data = (char*)data + pitch;
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out += PLANEWIDTH*4;
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}
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}
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else
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{
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pitch*=4;
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for (y = 0; y < bmh; y++)
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{
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for (x = 0; x < bmw; x++)
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{
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((unsigned int*)out)[x] = ((unsigned int*)data)[x];
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}
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data = (char*)data + pitch;
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out += PLANEWIDTH*4;
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}
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}
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fontplanes.planechanged = true;
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return c;
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}
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struct charcache_s *Font_TryLoadGlyph(font_t *f, CHARIDXTYPE charidx)
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{
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struct charcache_s *c;
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FT_GlyphSlot slot;
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FT_Bitmap *bm;
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#if GEN_CONCHAR_GLYPHS != 0
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if (charidx >= 0xe000 && charidx <= 0xe0ff && draw_chars)
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{
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int cpos = charidx & 0xff;
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unsigned int img[64*64], *d;
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unsigned char *s;
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int scale;
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int x,y, ys;
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if (draw_chars)
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{
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d = img;
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s = draw_chars + 8*(cpos&15)+128*8*(cpos/16);
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scale = f->charheight/8;
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if (scale < 1)
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scale = 1;
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if (scale > 64/8)
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scale = 64/8;
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for (y = 0; y < 8; y++)
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{
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for (ys = 0; ys < scale; ys++)
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{
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for (x = 0; x < 8*scale; x++)
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d[x] = d_8to24rgbtable[s[x/scale]];
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d+=8*scale;
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}
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s+=128;
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}
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c = Font_LoadGlyphData(f, charidx, false, img, 8*scale, 8*scale, 8*scale);
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if (c)
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{
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c->advance = 8*scale;
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c->left = 0;
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c->top = 7*scale;
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}
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return c;
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}
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charidx &= 0x7f;
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}
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#endif
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if (charidx >= 0xe100 && charidx <= 0xe1ff)
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{
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static const char *imgs[] =
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{
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"inv_shotgun",
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"inv_sshotgun",
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"inv_nailgun",
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"inv_snailgun",
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"inv_rlaunch",
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"inv_srlaunch",
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"inv_lightng",
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"inv2_shotgun",
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"inv2_sshotgun",
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"inv2_nailgun",
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"inv2_snailgun",
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"inv2_rlaunch",
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"inv2_srlaunch",
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"inv2_lightng",
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"sb_shells",
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"sb_nails",
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"sb_rocket",
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"sb_cells",
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"sb_armor1",
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"sb_armor2",
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"sb_armor3",
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"sb_key1",
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"sb_key2",
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"sb_invis",
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"sb_invuln",
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"sb_suit",
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"sb_quad",
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"sb_sigil1",
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"sb_sigil2",
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"sb_sigil3",
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"sb_sigil4",
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"face1",
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"face_p1",
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"face2",
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"face_p2",
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"face3",
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"face_p3",
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"face4",
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"face_p4",
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"face5",
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"face_p5",
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"face_invis",
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"face_invul2",
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"face_inv2",
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"face_quad"
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};
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qpic_t *wadimg;
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unsigned char *src;
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unsigned int img[64*64];
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int nw, nh;
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int x, y;
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unsigned int stepx, stepy;
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unsigned int srcx, srcy;
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if (charidx-0xe100 >= sizeof(imgs)/sizeof(imgs[0]))
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wadimg = NULL;
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else
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wadimg = W_SafeGetLumpName(imgs[charidx-0xe100]);
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if (wadimg)
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{
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nh = wadimg->height;
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nw = wadimg->width;
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while (nh < f->charheight)
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{
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nh *= 2;
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nw *= 2;
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}
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if (nh > f->charheight)
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{
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nw = (nw * f->charheight)/nh;
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nh = f->charheight;
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}
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stepy = 0x10000*((float)wadimg->height/nh);
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stepx = 0x10000*((float)wadimg->width/nw);
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if (nh > 64)
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nh = 64;
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if (nw > 64)
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nw = 64;
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srcy = 0;
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for (y = 0; y < nh; y++)
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{
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src = (unsigned char *)(wadimg->data);
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src += wadimg->width * (srcy>>16);
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srcy += stepy;
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srcx = 0;
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for (x = 0; x < nw; x++)
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{
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img[x+y*64] = d_8to24rgbtable[src[srcx>>16]];
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srcx += stepx;
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}
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}
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c = Font_LoadGlyphData(f, charidx, false, img, nw, nh, 64);
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if (c)
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{
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c->left = 0;
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c->top = f->charheight - (f->charheight - nh) - 1;
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c->advance = nw;
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return c;
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}
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}
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}
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if (pFT_Load_Char(f->face, charidx, FT_LOAD_RENDER))
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return NULL;
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slot = f->face->glyph;
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bm = &slot->bitmap;
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c = Font_LoadGlyphData(f, charidx, true, bm->buffer, bm->width, bm->rows, bm->pitch);
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if (c)
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{
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c->advance = slot->advance.x >> 6;
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c->left = slot->bitmap_left;
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c->top = slot->bitmap_top;
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}
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return c;
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}
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struct font_s *Font_LoadFont(int height, char *fontfilename)
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{
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int i;
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struct font_s *f;
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FT_Face face;
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int error;
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if (!fontlib)
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{
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dllfunction_t ft2funcs[] =
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{
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{(void**)&pFT_Init_FreeType, "FT_Init_FreeType"},
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{(void**)&pFT_Load_Char, "FT_Load_Char"},
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{(void**)&pFT_Set_Pixel_Sizes, "FT_Set_Pixel_Sizes"},
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{(void**)&pFT_New_Face, "FT_New_Face"},
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{(void**)&pFT_Init_FreeType, "FT_Init_FreeType"},
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{(void**)&pFT_Done_Face, "FT_Done_Face"},
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{NULL, NULL}
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};
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if (triedtoloadfreetype)
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return NULL;
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triedtoloadfreetype = true;
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fontmodule = Sys_LoadLibrary("freetype6", ft2funcs);
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if (!fontmodule)
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return NULL;
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error = pFT_Init_FreeType(&fontlib);
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if (error)
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return NULL;
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}
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//fixme: use FT_Open_Face eventually
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if (pFT_New_Face(fontlib, fontfilename, 0, &face))
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{
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return NULL;
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}
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error = pFT_Set_Pixel_Sizes(face, 0, height);
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if (error)
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{
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return NULL;
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}
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f = malloc(sizeof(*f));
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memset(f, 0, sizeof(*f));
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f->face = face;
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f->charheight = height;
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for (i = 0; i < FONTPLANES; i++)
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{
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if (!fontplanes.texnum[i])
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fontplanes.texnum[i] = GL_AllocNewTexture();
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}
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for (i = 0; i < FONTCHARS; i++)
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{
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f->chars[i].texplane = INVALIDPLANE;
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}
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return f;
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}
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void Font_Free(struct font_s *f)
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{
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struct charcache_s **link;
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for (link = &fontplanes.oldestchar; *link; )
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{
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if (*link >= f->chars && *link <= f->chars + FONTCHARS)
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{
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*link = (*link)->nextchar;
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if (!*link)
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fontplanes.newestchar = NULL;
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}
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else
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link = &(*link)->nextchar;
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}
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pFT_Done_Face(f->face);
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free(f);
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}
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void GLFont_BeginString(struct font_s *font, int vx, int vy, int *px, int *py)
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{
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*px = (vx*glwidth) / (float)vid.width;
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*py = (vy*glheight) / (float)vid.height;
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}
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int GLFont_CharHeight(struct font_s *font)
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{
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if (!font)
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return 8;
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return font->charheight;
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}
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int GLFont_CharWidth(struct font_s *font, unsigned int charcode)
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{
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struct charcache_s *c;
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if (!font)
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return 8;
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#if GEN_CONCHAR_GLYPHS == 0
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if ((charcode&CON_CHARMASK) >= 0xe000 && (charcode&CON_CHARMASK) <= 0xe0ff)
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return font->charheight;
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#endif
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c = Font_GetChar(font, charcode&CON_CHARMASK);
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if (!c)
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{
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c = Font_TryLoadGlyph(font, charcode&CON_CHARMASK);
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if (!c)
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return 0;
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}
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return c->advance;
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}
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int GLFont_LineBreaks(struct font_s *font, conchar_t *start, conchar_t *end, int scrwidth, int maxlines, conchar_t **starts, conchar_t **ends)
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{
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int l, bt;
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int px;
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int foundlines = 0;
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while (start < end)
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{
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// scan the width of the line
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for (px=0, l=0 ; px <= scrwidth;)
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{
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if ((start[l]&CON_CHARMASK) == '\n' || (start+l >= end))
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break;
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l++;
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px += GLFont_CharWidth(font, start[l]);
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}
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//if we did get to the end
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if (px > scrwidth)
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{
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bt = l;
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//backtrack until we find a space
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while(l > 0 && (start[l-1]&CON_CHARMASK)>' ')
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{
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l--;
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}
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if (l == 0 && bt>0)
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l = bt-1;
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px -= GLFont_CharWidth(font, start[l]);
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}
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starts[foundlines] = start;
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ends[foundlines] = start+l;
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foundlines++;
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if (foundlines == maxlines)
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break;
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start+=l;
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// for (l=0 ; l<40 && *start && *start != '\n'; l++)
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// start++;
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if ((*start&CON_CHARMASK) == '\n'||!l)
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start++; // skip the \n
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}
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return foundlines;
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}
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void GLDraw_FillRGB (int x, int y, int w, int h, float r, float g, float b);
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int GLFont_DrawChar(struct font_s *font, int px, int py, unsigned int charcode)
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{
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struct charcache_s *c;
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float s0, s1;
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float t0, t1;
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float nextx;
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float sx, sy, sw, sh;
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int col;
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if (!font)
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return px;
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#if GEN_CONCHAR_GLYPHS == 0
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if ((charcode&CON_CHARMASK) >= 0xe000 && (charcode&CON_CHARMASK) <= 0xe0ff)
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{
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extern char_texture;
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if (charcode == 32)
|
|
return px+font->charheight; // space
|
|
|
|
if (charcode & CON_BLINKTEXT)
|
|
{
|
|
if (!cl_noblink.value)
|
|
if ((int)(realtime*3) & 1)
|
|
return px+font->charheight;
|
|
}
|
|
|
|
qglEnable(GL_BLEND);
|
|
qglDisable(GL_ALPHA_TEST);
|
|
|
|
col = (charcode & CON_FGMASK) >> CON_FGSHIFT;
|
|
qglColor4f(consolecolours[col].fr, consolecolours[col].fg, consolecolours[col].fb, (charcode & CON_HALFALPHA)?0.5:1);
|
|
|
|
charcode &= 0xff;
|
|
|
|
sx = ((px)*vid.width) / (float)glwidth;
|
|
sy = ((py+font->charheight/8)*vid.height) / (float)glheight;
|
|
sw = ((font->charheight)*vid.width) / (float)glwidth;
|
|
sh = ((font->charheight)*vid.height) / (float)glheight;
|
|
|
|
col = charcode&15;
|
|
s0 = (float)col/16;
|
|
s1 = (float)(col+1)/16;
|
|
|
|
col = charcode>>4;
|
|
t0 = (float)col/16;
|
|
t1 = (float)(col+1)/16;
|
|
|
|
qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
GL_Bind(char_texture);
|
|
|
|
qglBegin(GL_QUADS);
|
|
qglTexCoord2f(s0, t0);
|
|
qglVertex2f(sx, sy);
|
|
qglTexCoord2f(s1, t0);
|
|
qglVertex2f(sx+sw, sy);
|
|
qglTexCoord2f(s1, t1);
|
|
qglVertex2f(sx+sw, sy+sh);
|
|
qglTexCoord2f(s0, t1);
|
|
qglVertex2f(sx, sy+sh);
|
|
qglEnd();
|
|
qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
|
|
return px+font->charheight;
|
|
}
|
|
#endif
|
|
|
|
c = Font_GetChar(font, charcode&CON_CHARMASK);
|
|
if (!c)
|
|
{
|
|
c = Font_TryLoadGlyph(font, charcode&CON_CHARMASK);
|
|
if (!c)
|
|
return px;
|
|
}
|
|
|
|
nextx = px + c->advance;
|
|
|
|
if (charcode & CON_BLINKTEXT)
|
|
{
|
|
if (!cl_noblink.value)
|
|
if ((int)(realtime*3) & 1)
|
|
return nextx;
|
|
}
|
|
|
|
// draw background
|
|
if (charcode & CON_NONCLEARBG)
|
|
{
|
|
sx = ((px)*vid.width) / (float)glwidth;
|
|
sy = ((py+font->charheight/3)*vid.height) / (float)glheight;
|
|
sw = ((c->advance)*vid.width) / (float)glwidth;
|
|
sh = ((font->charheight)*vid.height) / (float)glheight;
|
|
|
|
col = (charcode & CON_BGMASK) >> CON_BGSHIFT;
|
|
GLDraw_FillRGB(sx, sy, sw, sh, consolecolours[col].fr, consolecolours[col].fg, consolecolours[col].fb);
|
|
}
|
|
|
|
|
|
sx = ((px+c->left)*vid.width) / (float)glwidth;
|
|
sy = ((py+font->charheight-c->top)*vid.height) / (float)glheight;
|
|
sw = ((c->bmw)*vid.width) / (float)glwidth;
|
|
sh = ((c->bmh)*vid.height) / (float)glheight;
|
|
|
|
s0 = (float)c->bmx/PLANEWIDTH;
|
|
t0 = (float)c->bmy/PLANEWIDTH;
|
|
s1 = (float)(c->bmx+c->bmw)/PLANEWIDTH;
|
|
t1 = (float)(c->bmy+c->bmh)/PLANEWIDTH;
|
|
|
|
qglEnable(GL_BLEND);
|
|
qglDisable(GL_ALPHA_TEST);
|
|
|
|
col = (charcode & CON_FGMASK) >> CON_FGSHIFT;
|
|
qglColor4f(consolecolours[col].fr, consolecolours[col].fg, consolecolours[col].fb, (charcode & CON_HALFALPHA)?0.5:1);
|
|
|
|
qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
if (fontplanes.planechanged)
|
|
{
|
|
GL_Bind(fontplanes.texnum[fontplanes.activeplane]);
|
|
GL_Upload32(NULL, (void*)fontplanes.plane, PLANEWIDTH, PLANEHEIGHT, false, true);
|
|
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
fontplanes.planechanged = false;
|
|
}
|
|
GL_Bind(fontplanes.texnum[c->texplane]);
|
|
|
|
qglBegin(GL_QUADS);
|
|
qglTexCoord2f(s0, t0);
|
|
qglVertex2f(sx, sy);
|
|
qglTexCoord2f(s1, t0);
|
|
qglVertex2f(sx+sw, sy);
|
|
qglTexCoord2f(s1, t1);
|
|
qglVertex2f(sx+sw, sy+sh);
|
|
qglTexCoord2f(s0, t1);
|
|
qglVertex2f(sx, sy+sh);
|
|
qglEnd();
|
|
qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
return nextx;
|
|
}
|
|
#endif
|