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/* Copyright (c) Mark J. Kilgard, 1997. */
/* This program is freely distributable without licensing fees and is
provided without guarantee or warrantee expressed or implied. This
program is -not- in the public domain. */
#ifndef __TEXFONT_H__
#define __TEXFONT_H__
#include <GL/gl.h>
#define TXF_FORMAT_BYTE 0
#define TXF_FORMAT_BITMAP 1
typedef struct {
unsigned short c; /* Potentially support 16-bit glyphs. */
unsigned char width;
unsigned char height;
signed char xoffset;
signed char yoffset;
signed char advance;
char dummy; /* Space holder for alignment reasons. */
short x;
short y;
} TexGlyphInfo;
typedef struct {
GLfloat t0[2];
GLshort v0[2];
GLfloat t1[2];
GLshort v1[2];
GLfloat t2[2];
GLshort v2[2];
GLfloat t3[2];
GLshort v3[2];
GLfloat advance;
} TexGlyphVertexInfo;
typedef struct {
GLuint texobj;
int tex_width;
int tex_height;
int max_ascent;
int max_descent;
int num_glyphs;
int min_glyph;
int range;
unsigned char *teximage;
TexGlyphInfo *tgi;
TexGlyphVertexInfo *tgvi;
TexGlyphVertexInfo **lut;
} TexFont;
extern char *txfErrorString(void);
extern TexFont *txfLoadFont(
char *filename);
extern void txfUnloadFont(
TexFont * txf);
extern GLuint txfEstablishTexture(
TexFont * txf,
GLuint texobj,
GLboolean setupMipmaps);
extern void txfBindFontTexture(
TexFont * txf);
extern void txfGetStringMetrics(
TexFont * txf,
char *string,
int len,
int *width,
int *max_ascent,
int *max_descent);
extern void txfRenderGlyph(
TexFont * txf,
int c);
extern void txfRenderString(
TexFont * txf,
char *string,
int len);
extern void txfRenderFancyString(
TexFont * txf,
char *string,
int len);
#endif /* __TEXFONT_H__ */
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