mirror of https://github.com/BOINC/boinc.git
104 lines
1.8 KiB
C
104 lines
1.8 KiB
C
// Copyright (c) Mark J. Kilgard, 1997.
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// This program is freely distributable without licensing fees and is
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// provided without guarantee or warrantee expressed or implied.
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// This program is -not- in the public domain.
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#ifndef __TEXFONT_H__
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#define __TEXFONT_H__
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#include "boinc_gl.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define TXF_FORMAT_BYTE 0
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#define TXF_FORMAT_BITMAP 1
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#define TXF_NUM_FONT 28
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extern const char *font_names [];
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typedef struct {
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unsigned short c; // Potentially support 16-bit glyphs.
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unsigned char width;
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unsigned char height;
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signed char xoffset;
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signed char yoffset;
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signed char advance;
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char dummy; // Space holder for alignment reasons.
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short x;
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short y;
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} TexGlyphInfo;
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typedef struct {
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GLfloat t0[2];
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GLshort v0[2];
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GLfloat t1[2];
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GLshort v1[2];
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GLfloat t2[2];
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GLshort v2[2];
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GLfloat t3[2];
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GLshort v3[2];
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GLfloat advance;
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} TexGlyphVertexInfo;
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typedef struct {
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GLuint texobj;
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int tex_width;
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int tex_height;
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int max_ascent;
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int max_descent;
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int num_glyphs;
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int min_glyph;
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int range;
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unsigned char *teximage;
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TexGlyphInfo *tgi;
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TexGlyphVertexInfo *tgvi;
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TexGlyphVertexInfo **lut;
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} TexFont;
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extern const char *txfErrorString(void);
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extern TexFont *txfLoadFont(const char *filename);
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extern void txfUnloadFont(TexFont * txf);
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extern GLuint CreateTexFont(
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TexFont * txf,
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GLuint texobj,
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GLboolean setupMipmaps);
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extern void txfBindFontTexture(TexFont * txf);
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extern void txfGetStringMetrics(
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TexFont * txf,
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char *string,
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int len,
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int *width,
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int *max_ascent,
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int *max_descent);
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extern void txfRenderGlyph(
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TexFont * txf,
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int c);
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extern void txfRenderString(
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TexFont * txf,
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char *string,
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int len);
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extern void txfRenderFancyString(
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TexFont * txf,
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char *string,
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int len);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // __TEXFONT_H__
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