a80214290d
Rewrote much of the console code. Should be no obvious differences. Nearly all conchar parsing goes via a single function. Still some left in the dedicated server code. Added the ability to parse utf-8 text, disabled by default. Added the ability to input unicode chars using whatever keymap the user has set up in windows (not enabled by default). Reworked vbo stuff to be a little more versatile. Added toggle console command. Added freetype2 support (not compiled by default). git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@3234 fc73d0e0-1445-4013-8a0c-d673dee63da5
516 lines
12 KiB
C
516 lines
12 KiB
C
#include "quakedef.h"
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#ifdef AVAIL_FREETYPE
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#include "glquake.h"
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#pragma comment(lib, "../libs/freetype2/objs/freetype239.lib")
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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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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 (FT_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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error = FT_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 (FT_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 = FT_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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fontplanes.texnum[0] = GL_AllocNewTexture();
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fontplanes.texnum[1] = GL_AllocNewTexture();
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fontplanes.texnum[2] = GL_AllocNewTexture();
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fontplanes.texnum[3] = GL_AllocNewTexture();
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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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FT_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, unsigned int charcode)
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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)
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return px+font->charheight; // space
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if (charcode & CON_BLINKTEXT)
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{
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if (!cl_noblink.value)
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if ((int)(realtime*3) & 1)
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return px+font->charheight;
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}
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qglEnable(GL_BLEND);
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qglDisable(GL_ALPHA_TEST);
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col = (charcode & CON_FGMASK) >> CON_FGSHIFT;
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qglColor4f(consolecolours[col].fr, consolecolours[col].fg, consolecolours[col].fb, (charcode & CON_HALFALPHA)?0.5:1);
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charcode &= 0xff;
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sx = ((px)*vid.width) / (float)glwidth;
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sy = ((py+font->charheight/8)*vid.height) / (float)glheight;
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sw = ((font->charheight)*vid.width) / (float)glwidth;
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sh = ((font->charheight)*vid.height) / (float)glheight;
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col = charcode&15;
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s0 = (float)col/16;
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s1 = (float)(col+1)/16;
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col = charcode>>4;
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t0 = (float)col/16;
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t1 = (float)(col+1)/16;
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qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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GL_Bind(char_texture);
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qglBegin(GL_QUADS);
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qglTexCoord2f(s0, t0);
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qglVertex2f(sx, sy);
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qglTexCoord2f(s1, t0);
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qglVertex2f(sx+sw, sy);
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qglTexCoord2f(s1, t1);
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qglVertex2f(sx+sw, sy+sh);
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qglTexCoord2f(s0, t1);
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qglVertex2f(sx, sy+sh);
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qglEnd();
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qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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return px+font->charheight;
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}
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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 px;
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}
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nextx = px + c->advance;
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if (charcode & CON_BLINKTEXT)
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{
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if (!cl_noblink.value)
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if ((int)(realtime*3) & 1)
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return nextx;
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}
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// draw background
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if (charcode & CON_NONCLEARBG)
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{
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sx = ((px)*vid.width) / (float)glwidth;
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sy = ((py+font->charheight/3)*vid.height) / (float)glheight;
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sw = ((c->advance)*vid.width) / (float)glwidth;
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sh = ((font->charheight)*vid.height) / (float)glheight;
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col = (charcode & CON_BGMASK) >> CON_BGSHIFT;
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GLDraw_FillRGB(sx, sy, sw, sh, consolecolours[col].fr, consolecolours[col].fg, consolecolours[col].fb);
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}
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sx = ((px+c->left)*vid.width) / (float)glwidth;
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sy = ((py+font->charheight-c->top)*vid.height) / (float)glheight;
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sw = ((c->bmw)*vid.width) / (float)glwidth;
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sh = ((c->bmh)*vid.height) / (float)glheight;
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s0 = (float)c->bmx/PLANEWIDTH;
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t0 = (float)c->bmy/PLANEWIDTH;
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s1 = (float)(c->bmx+c->bmw)/PLANEWIDTH;
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t1 = (float)(c->bmy+c->bmh)/PLANEWIDTH;
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qglEnable(GL_BLEND);
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qglDisable(GL_ALPHA_TEST);
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col = (charcode & CON_FGMASK) >> CON_FGSHIFT;
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qglColor4f(consolecolours[col].fr, consolecolours[col].fg, consolecolours[col].fb, (charcode & CON_HALFALPHA)?0.5:1);
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qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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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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qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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fontplanes.planechanged = false;
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}
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GL_Bind(fontplanes.texnum[c->texplane]);
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qglBegin(GL_QUADS);
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qglTexCoord2f(s0, t0);
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qglVertex2f(sx, sy);
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qglTexCoord2f(s1, t0);
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qglVertex2f(sx+sw, sy);
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qglTexCoord2f(s1, t1);
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qglVertex2f(sx+sw, sy+sh);
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qglTexCoord2f(s0, t1);
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qglVertex2f(sx, sy+sh);
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qglEnd();
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qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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return nextx;
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}
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#endif
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