TextureFont *
font_manager_get_from_filename( FontManager *self,
const char * filename,
const float size )
{
size_t i;
TextureFont *font;
assert( self );
for( i=0; i<self->fonts->size;++i )
{
font = (TextureFont *) vector_get( self->fonts, i );
if( (strcmp(font->filename, filename) == 0) && ( font->size == size) )
{
return font;
}
}
font = texture_font_new( self->atlas, filename, size );
texture_font_cache_glyphs( font, self->cache );
if( font )
{
vector_push_back( self->fonts, font );
}
return font;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 800, 400 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL / vertex arrays" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
size_t i;
texture_font_t *font = 0;
texture_atlas_t *atlas = texture_atlas_new( 512, 512, 1 );
const char * filename = "./Vera.ttf";
wchar_t *text = L"A Quick Brown Fox Jumps Over The Lazy Dog 0123456789";
buffer = vertex_buffer_new( "v3f:t2f:c4f" );
vec2 pen = {{0,0}};
vec4 black = {{0,0,0,1}};
for( i=7; i < 27; ++i)
{
font = texture_font_new( atlas, filename, i );
pen.x = 0;
pen.y -= font->height;
texture_font_load_glyphs( font, text );
add_text( buffer, font, text, &black, &pen );
texture_font_delete( font );
}
glBindTexture( GL_TEXTURE_2D, atlas->id );
glutMainLoop( );
return 0;
}
// ----------------------------------------- font_manager_get_from_filename ---
texture_font_t *
font_manager_get_from_filename( font_manager_t *self,
const char * filename,
const float size )
{
size_t i;
texture_font_t *font;
assert( self );
for( i=0; i<vector_size(self->fonts); ++i )
{
font = * (texture_font_t **) vector_get( self->fonts, i );
if( (strcmp(font->filename, filename) == 0) && ( font->size == size) )
{
return font;
}
}
font = texture_font_new( self->atlas, filename, size );
if( font )
{
vector_push_back( self->fonts, &font );
texture_font_load_glyphs( font, self->cache );
return font;
}
fprintf( stderr, "Unable to load \"%s\" (size=%.1f)\n", filename, size );
return 0;
}
//texture
int init_texture()
{
memset( &m_texture, 0, sizeof(texture) );
glPixelStorei ( GL_UNPACK_ALIGNMENT, 1 ); //global
m_texture.data = (unsigned char *)malloc( IMAGE_W * IMAGE_H * 1 );
glActiveTexture(GL_TEXTURE0);
m_texture.text_atlas = texture_atlas_new( 1024, 1024, 1 );
m_texture.text_font = texture_font_new( m_texture.text_atlas, "./fonts/Vera.ttf", 60/*size*/ );
texture_font_load_glyphs( m_texture.text_font, L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~");
texture_atlas_upload(m_texture.text_atlas); //uploads data to gpu memory using glTexImage2D().
glActiveTexture(GL_TEXTURE1);
glGenTextures(1, &m_texture.m_texture);
glBindTexture(GL_TEXTURE_2D, m_texture.m_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // only for Active texture
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
return (0);
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
size_t width = 800, height = 200;
glutInit( &argc, argv );
glutInitWindowSize( width, height );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Glyph Cartoon" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
exit( EXIT_FAILURE );
}
fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
atlas = texture_atlas_new( 1024, 1024, 1 );
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
texture_font_t *font = texture_font_new( atlas, "fonts/ObelixPro.ttf", 128 );
vec2 pen = {{50, 50}};
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 yellow = {{1.0, 1.0, 0.0, 1.0}};
vec4 orange1 = {{1.0, 0.9, 0.0, 1.0}};
vec4 orange2 = {{1.0, 0.6, 0.0, 1.0}};
font->outline_type = 2;
font->outline_thickness = 7;
add_text( buffer, font, L"Freetype GL", pen, black, black );
font->outline_type = 2;
font->outline_thickness = 5;
add_text( buffer, font, L"Freetype GL", pen, yellow, yellow );
font->outline_type = 1;
font->outline_thickness = 3;
add_text( buffer, font, L"Freetype GL", pen, black, black );
font->outline_type = 0;
font->outline_thickness = 0;
add_text( buffer, font, L"Freetype GL", pen, orange1, orange2 );
shader = shader_load("shaders/v3f-t2f-c4f.vert",
"shaders/v3f-t2f-c4f.frag");
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glutMainLoop( );
return 0;
}
void opengl_font_reload(font_t* f)
{
opengl_font_t* o = (opengl_font_t*)f->data;
texture_font_delete(o->font);
texture_atlas_delete(o->atlas);
o->atlas = texture_atlas_new(512, 512, 1);
o->font = texture_font_new(o->atlas, o->name, f->size * window_zoom);
texture_font_load_glyphs(o->font, cache);
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
size_t i;
vec4 color = {{0,0,0,1}};
vec2 pen = {{0,0}};
glutInit( &argc, argv );
glutInitWindowSize( 800, 600 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL benchmark" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
glutIdleFunc( idle );
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
exit( EXIT_FAILURE );
}
fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
atlas = texture_atlas_new( 512, 512, 1 );
font = texture_font_new( atlas, "fonts/VeraMono.ttf", 12 );
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
pen.y = -font->descender;
for( i=0; i<line_count; ++i )
{
pen.x = 10.0;
add_text( buffer, font, text, &color, &pen );
pen.y += font->height - font->linegap;
}
glClearColor( 1.0, 1.0, 1.0, 1.0 );
glDisable( GL_DEPTH_TEST );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glEnable( GL_TEXTURE_2D );
glEnable( GL_BLEND );
shader = shader_load("shaders/v3f-t2f-c4f.vert",
"shaders/v3f-t2f-c4f.frag");
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glutMainLoop( );
return EXIT_SUCCESS;
}
// ------------------------------------------------------------------- main ---
int
main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 512, 512 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL width shaders" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutMotionFunc( mouse_drag );
glutPassiveMotionFunc( mouse_motion );
glutKeyboardFunc( keyboard );
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
exit( EXIT_FAILURE );
}
fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
unsigned char *map;
texture_font_t * font;
const char *filename = "fonts/Vera.ttf";
const wchar_t *cache = L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~";
atlas = texture_atlas_new( 512, 512, 1 );
font = texture_font_new( atlas, filename, 72 );
texture_font_load_glyphs( font, cache );
texture_font_delete( font );
fprintf( stderr, "Generating distance map...\n" );
map = make_distance_map(atlas->data, atlas->width, atlas->height);
fprintf( stderr, "done !\n");
memcpy( atlas->data, map, atlas->width*atlas->height*sizeof(unsigned char) );
free(map);
texture_atlas_upload( atlas );
// Create the GLSL program
program = shader_load( "shaders/distance-field.vert",
"shaders/distance-field.frag" );
glUseProgram( program );
glutMainLoop( );
return 0;
}
int modelEngine::initFonts()
{
/* Texture atlas to store individual glyphs */
atlas = texture_atlas_new( 1024, 1024, 1 );
font1 = texture_font_new( atlas, "./fonts/fonts/custom.ttf", 50 );
font2 = texture_font_new( atlas, "./fonts/fonts/ObelixPro.ttf", 70 );
/* Cache some glyphs to speed things up */
texture_font_load_glyphs( font1, L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~");
texture_font_load_glyphs( font2, L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~");
texture_atlas_upload(atlas);
vec2 pen = {-400,150};
vec4 color = {0.5,0.5,0.5,0.5};
GLuint bufIndex = atlas->id;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 800, 400 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL / LCD filtering" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
// GLenum err = glewInit();
// if (GLEW_OK != err)
// {
// /* Problem: glewInit failed, something is seriously wrong. */
// fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
// exit( EXIT_FAILURE );
// }
// fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
size_t i;
texture_font_t *font = 0;
atlas = texture_atlas_new( 512, 512, 3 );
const char * filename = "fonts/Vera.ttf";
wchar_t *text = L"A Quick Brown Fox Jumps Over The Lazy Dog 0123456789";
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f,ashift:1f,agamma:1f" );
vec2 pen = {{0,0}};
vec4 color = {{0,0,0,1}};
for( i=7; i < 27; ++i)
{
font = texture_font_new( atlas, filename, i );
pen.x = 0;
pen.y -= font->height;
texture_font_load_glyphs( font, text );
add_text( buffer, font, text, &color, &pen );
texture_font_delete( font );
}
glBindTexture( GL_TEXTURE_2D, atlas->id );
shader = shader_load( "shaders/text.vert",
"shaders/text.frag" );
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glutMainLoop( );
return 0;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 512, 512 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( argv[0] );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
atlas = texture_atlas_new( 512, 512, 1 );
assert(atlas);
const char *filename = "../fonts/Vera.ttf";
const wchar_t *cache = L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~";
size_t minsize = 8, maxsize = 27;
size_t count = maxsize - minsize;
size_t i, missed = 0;
for( i=minsize; i < maxsize; ++i )
{
texture_font_t * font = texture_font_new( atlas, filename, i );
if(!font) {
fprintf(stderr, "Failed to load font: \"%s\"\n", filename);
return -1;
}
if(!texture_font_load_glyphs( font, cache )) {
missed++;
}
texture_font_delete( font );
}
printf( "Matched font : %s\n", filename );
printf( "Number of fonts : %zd\n", count );
printf( "Number of glyphs per font : %zd\n", wcslen(cache) );
printf( "Number of missed glyphs : %zd\n", missed );
printf( "Total number of glyphs : %zd/%zd\n",
wcslen(cache)*count - missed, wcslen(cache)*count );
printf( "Texture size : %zdx%zd\n", atlas->width, atlas->height );
printf( "Texture occupancy : %.2f%%\n",
100.0*atlas->used/(float)(atlas->width*atlas->height) );
glutMainLoop( );
return 0;
}
void Font::ResizeFont(int size)
{
if(m_font) texture_font_delete(m_font);
if(m_atlas) texture_atlas_delete(m_atlas);
delete m_textureAtlas;
m_atlas = texture_atlas_new(512, 512, 1);
m_font = texture_font_new(m_atlas, m_fontFile->m_buffer, m_fontFile->m_bufLength, (float)size);
texture_font_load_glyphs(m_font,
L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~",
m_fontFile->m_buffer, m_fontFile->m_bufLength);
m_textureAtlas = new GLTexture(m_atlas->id, 512, 512);
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
size_t width = 600, height = 200;
glutInit( &argc, argv );
glutInitWindowSize( width, height );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Glyph Cartoon" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
atlas = texture_atlas_new( 1024, 1024, 1 );
buffer = vertex_buffer_new( "v3f:t2f:c4f" );
texture_font_t *font = texture_font_new( atlas, "./ObelixPro.ttf", 128 );
vec2 pen = {{30, 50}};
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 yellow = {{1.0, 1.0, 0.0, 1.0}};
vec4 orange1 = {{1.0, 0.9, 0.0, 1.0}};
vec4 orange2 = {{1.0, 0.6, 0.0, 1.0}};
font->outline_type = 1;
font->outline_thickness = 4;
add_text( buffer, font, L"Cartoon", pen, black, black );
/*
font->outline_type = 2;
font->outline_thickness = 4;
add_text( buffer, font, L"Cartoon", pen, black, yellow );
font->outline_type = 3;
font->outline_thickness = 4;
add_text( buffer, font, L"Cartoon", pen, black, yellow );
*/
font->outline_type = 0;
font->outline_thickness = 0;
add_text( buffer, font, L"Cartoon", pen, orange1, orange2 );
glutMainLoop( );
return 0;
}
ofxFreeTypeGL::ofxFreeTypeGL(){
texture_atlas_t * atlas = texture_atlas_new( ofGetWidth(), ofGetHeight(), 1 );
texture.allocate(1024, 1024, GL_LUMINANCE_ALPHA);
const char *filename = "../../../data/fonts/hiraginoKakugoW6.otf";
const wchar_t *cache = L"Wow,これは面白い!!夜露死苦〠";
size_t minsize = 4, maxsize = 80;
size_t count = maxsize - minsize;
size_t i, missed = 0;
for( i=minsize; i < maxsize; ++i ){
texture_font_t * font = texture_font_new( atlas, filename, i );
missed += texture_font_load_glyphs( font, cache );
texture_font_delete( font );
}
printf( "Matched font : %s\n", filename );
printf( "Number of fonts : %ld\n", count );
printf( "Number of glyphs per font : %ld\n", wcslen(cache) );
printf( "Number of missed glyphs : %ld\n", missed );
printf( "Total number of glyphs : %ld/%ld\n",
wcslen(cache)*count - missed, wcslen(cache)*count );
printf( "Texture size : %ldx%ld\n", atlas->width, atlas->height );
printf( "Texture occupancy : %.2f%%\n",
100.0*atlas->used/(float)(atlas->width*atlas->height) );
const int SIZE = atlas->width * atlas->height;
vector<unsigned char> temp;
temp.resize(SIZE * 2);
unsigned char *src = atlas->data;
unsigned char *dst = temp.data();
for (int i = 0; i < SIZE; i++){
dst[0] = 255;
dst[1] = *src;
src++;
dst += 2;
}
texture.loadData(temp.data(), 1024, 1024, GL_LUMINANCE_ALPHA);
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 260, 330 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL / subpixel rendering" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
size_t i;
texture_font_t *font;
const char * filename = "./Vera.ttf";
wchar_t *text = L"|... A Quick Brown Fox Jumps Over The Lazy Dog";
vec2 pen = {{0,0}};
vec4 black = {{0,0,0,1}};
atlas = texture_atlas_new( 512, 512, 3 );
font = texture_font_new( atlas, filename, 9 );
buffer = vertex_buffer_new( "v3f:t2f:c4f:1g1f" );
pen.x = 0; pen.y = 0;
pen.y -= font->ascender;
for( i=0; i < 30; ++i)
{
pen.x = 20 + i * 0.1;
pen.y = 310 - i * 10;
add_text( buffer, font, text, &black, &pen );
}
// Create the GLSL program
char * vertex_shader_source = read_shader("./subpixel.vert");
char * fragment_shader_source = read_shader("./subpixel.frag");
program = build_program( vertex_shader_source, fragment_shader_source );
texture_location = glGetUniformLocation(program, "texture");
pixel_location = glGetUniformLocation(program, "pixel");
glBindTexture( GL_TEXTURE_2D, atlas->id );
glutMainLoop( );
return 0;
}
// ------------------------------------------------------------------- main ---
int
main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 512, 512 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Distance fields demo" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
glutTimerFunc( 1000.0/60, timer, 60 );
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
exit( EXIT_FAILURE );
}
fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
program = shader_load( "shaders/distance-field.vert",
"shaders/distance-field-3.frag" );
glUseProgram( program );
atlas = texture_atlas_new( 512, 512, 1 );
font = texture_font_new( atlas, "fonts/Vera.ttf", 32 );
texture_glyph_t *glyph;
// Generate the glyp at 512 points, compute distance field and scale it
// back to 32 points
// Just load another glyph if you want to see difference (draw render a '@')
glyph = load_glyph( "fonts/Vera.ttf", L'@', 512, 64, 0.1);
vector_push_back( font->glyphs, &glyph );
texture_atlas_upload( atlas );
glutMainLoop( );
return 0;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
size_t i;
vec4 color = {{0,0,0,1}};
vec2 pen = {{0,0}};
glutInit( &argc, argv );
glutInitWindowSize( 800, 600 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL benchmark" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
glutIdleFunc( idle );
atlas = texture_atlas_new( 512, 512, 1 );
font = texture_font_new( atlas, "fonts/VeraMono.ttf", 12 );
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
pen.y = -font->descender;
for( i=0; i<line_count; ++i )
{
pen.x = 10.0;
add_text( buffer, font, text, &color, &pen );
pen.y += font->height - font->linegap;
}
glClearColor( 1.0, 1.0, 1.0, 1.0 );
glDisable( GL_DEPTH_TEST );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glEnable( GL_TEXTURE_2D );
glEnable( GL_BLEND );
shader = shader_load("shaders/v3f-t2f-c4f.vert",
"shaders/v3f-t2f-c4f.frag");
glutMainLoop( );
return EXIT_SUCCESS;
}
int opengl_font_build(
font_t* font,
const char* file,
int size)
{
opengl_font_t* o;
if((o = (opengl_font_t*)malloc(sizeof(opengl_font_t))) == NULL)
return 0;
font->size = size;
font->data = (void*)o;
m_sprintf(o->name, MAX_BUFFER, DATA_PATH "/" FONTS "/%s", file);
o->atlas = texture_atlas_new(512, 512, 1);
o->font = texture_font_new(o->atlas, o->name, size * window_zoom);
texture_font_load_glyphs(o->font, cache);
current_font = font; // Set last build to current one.
return 1;
}
// ----------------------------------------------------------- build_buffer ---
void
build_buffer( void )
{
vec2 pen;
size_t i;
texture_font_t *font;
texture_glyph_t *glyph;
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
markup_t markup = {
.family = "Arial",
.size = 10.0,
.bold = 0,
.italic = 0,
.rise = 0.0,
.spacing = 0.0,
.gamma = 2.2,
.foreground_color = white,
.background_color = none,
.underline = 0,
.underline_color = white,
.overline = 0,
.overline_color = white,
.strikethrough = 0,
.strikethrough_color = white,
.font = 0,
};
vertex_buffer_clear( buffer );
texture_atlas_clear( atlas );
if( p_family == VERA)
{
font = texture_font_new( atlas, "fonts/Vera.ttf", p_size );
}
else if( p_family == VERA_MONO)
{
font = texture_font_new( atlas, "fonts/VeraMono.ttf", p_size );
}
else if( p_family == GEORGIA)
{
font = texture_font_new( atlas, "fonts/Georgia.ttf", p_size );
}
else if( p_family == TIMES )
{
font = texture_font_new( atlas, "fonts/Times.ttf", p_size );
}
else if( p_family == TAHOMA )
{
font = texture_font_new( atlas, "fonts/Tahoma.ttf", p_size );
}
else if( p_family == ARIAL )
{
font = texture_font_new( atlas, "fonts/Arial.ttf", p_size );
}
else if( p_family == VERDANA )
{
font = texture_font_new( atlas, "fonts/Verdana.ttf", p_size );
}
else
{
fprintf( stderr, "Error : Unknown family type\n" );
return;
}
font->hinting = p_hinting;
font->filtering = 1;
float norm = 1.0/(p_primary + 2*p_secondary + 2*p_tertiary);
font->lcd_weights[0] = (unsigned char)(p_tertiary*norm*256);
font->lcd_weights[1] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[2] = (unsigned char)(p_primary*norm*256);
font->lcd_weights[3] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[4] = (unsigned char)(p_tertiary*norm*256);
texture_font_load_glyphs( font,
L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~" );
pen.x = 10;
pen.y = 600 - font->height - 10;
glyph = texture_font_get_glyph( font, text[0] );
add_glyph( glyph, buffer, &markup, &pen, 0 );
for( i=1; i<wcslen(text); ++i )
{
if( text[i] == '\n' )
{
pen.x = 10;
pen.y -= font->height; // + 0.01*(size - (int)size)*font->height;
}
else
{
glyph = texture_font_get_glyph( font, text[i] );
float kerning = 0.0;
if( p_kerning )
{
kerning = texture_glyph_get_kerning( glyph, text[i-1] );
}
add_glyph( glyph, buffer, &markup, &pen, kerning );
}
}
texture_font_delete (font );
}
// ---------------------------------------------------------------- display ---
void display(void)
{
if( p_invert )
{
glClearColor( 0, 0, 0, 1 );
}
else
{
glClearColor( 1, 1, 1, 1 );
}
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, atlas->id );
if( !p_lcd_filtering )
{
glEnable( GL_COLOR_MATERIAL );
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
if( p_invert )
{
glColor4f(1,1,1,1);
}
else
{
glColor4f(0,0,0,1);
}
}
else
{
glEnable( GL_COLOR_MATERIAL );
glBlendFunc( GL_CONSTANT_COLOR_EXT,
GL_ONE_MINUS_SRC_COLOR );
glEnable( GL_BLEND );
glColor3f( 1,1,1 );
if( p_invert )
{
glBlendColor( 1, 1, 1, 1 );
}
else
{
glBlendColor( 0, 0, 0, 1 );
}
}
if( !p_lcd_filtering )
{
vertex_buffer_render( buffer, GL_TRIANGLES, "vt" );
}
else
{
glUseProgram( program );
glUniform1i( texture_location, 0 );
glUniform1f( gamma_location, p_gamma );
float norm = 1.0/(p_primary+2*p_secondary+2*p_tertiary);
glUniform1f( primary_location, p_primary*norm );
glUniform1f( secondary_location, p_secondary*norm );
glUniform1f( tertiary_location, p_tertiary*norm );
glUniform2f( pixel_location,
1.0/atlas->width,
1.0/atlas->height );
vertex_buffer_render( buffer, GL_TRIANGLES, "vtc" );
glUseProgram( 0 );
}
TwDraw( );
glutSwapBuffers( );
}
// ---------------------------------------------------------------- reshape ---
void reshape( int width, int height )
{
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, 0, height, -1, 1);
glMatrixMode(GL_MODELVIEW);
TwWindowSize( width, height );
}
// ----------------------------------------------------------- build_buffer ---
void
build_buffer( void )
{
vec2 pen;
texture_font_t *font;
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
vec4 color = white;
if( p_invert )
{
color = black;
}
markup_t markup = {
.family = "Arial",
.size = 10.0,
.bold = 0,
.italic = 0,
.rise = 0.0,
.spacing = p_interval,
.gamma = p_gamma,
.foreground_color = color,
.background_color = none,
.underline = 0,
.underline_color = color,
.overline = 0,
.overline_color = color,
.strikethrough = 0,
.strikethrough_color = color,
.font = 0,
};
text_buffer_clear( buffer );
texture_atlas_t * atlas = buffer->manager->atlas;
texture_atlas_clear( atlas );
if( p_family == VERA)
{
font = texture_font_new( atlas, "fonts/Vera.ttf", p_size );
}
else if( p_family == VERA_MONO)
{
font = texture_font_new( atlas, "fonts/VeraMono.ttf", p_size );
}
else if( p_family == GEORGIA)
{
font = texture_font_new( atlas, "fonts/Georgia.ttf", p_size );
}
else if( p_family == TIMES )
{
font = texture_font_new( atlas, "fonts/Times.ttf", p_size );
}
else if( p_family == TAHOMA )
{
font = texture_font_new( atlas, "fonts/Tahoma.ttf", p_size );
}
else if( p_family == ARIAL )
{
font = texture_font_new( atlas, "fonts/Arial.ttf", p_size );
}
else if( p_family == VERDANA )
{
font = texture_font_new( atlas, "fonts/Verdana.ttf", p_size );
}
else
{
fprintf( stderr, "Error : Unknown family type\n" );
return;
}
markup.font = font;
font->hinting = p_hinting;
font->kerning = p_kerning;
font->filtering = 1;
float norm = 1.0/(p_primary + 2*p_secondary + 2*p_tertiary);
font->lcd_weights[0] = (unsigned char)(p_tertiary*norm*256);
font->lcd_weights[1] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[2] = (unsigned char)(p_primary*norm*256);
font->lcd_weights[3] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[4] = (unsigned char)(p_tertiary*norm*256);
pen.x = 10;
pen.y = 600 - font->height - 10;
text_buffer_printf( buffer, &pen, &markup, text, NULL );
// Post-processing for width and orientation
vertex_buffer_t * vbuffer = buffer->buffer;
size_t i;
for( i=0; i < vector_size( vbuffer->items ); ++i )
{
ivec4 *item = (ivec4 *) vector_get( vbuffer->items, i);
glyph_vertex_t * v0 = /* x0,y0 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+0 );
//glyph_vertex_t * v1 = /* x0,y1 */
// (glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+1 );
glyph_vertex_t * v2 = /* x1,y1 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+2 );
glyph_vertex_t * v3 = /* x1,y0 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+3 );
float x0 = v0->x, y0 = v0->y;
float x1 = v2->x, y1 = v2->y;
v2->x = v3->x = x0 + (x1-x0)*p_width;
float dy = abs(y1-y0);
float dx = tan(p_faux_italic/180.0 * M_PI) * dy;
v0->x += dx;
v0->shift = fmod(v0->shift + dx-(int)(dx),1.0);
v3->x += dx;
v3->shift = fmod(v3->shift + dx-(int)(dx),1.0);
}
texture_font_delete( font );
}
// ---------------------------------------------------------------- display ---
void display(void)
{
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
if( !p_invert )
{
glClearColor( 0, 0, 0, 1 );
buffer->base_color = white;
}
else
{
glClearColor( 1, 1, 1, 1 );
buffer->base_color = black;
}
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glUseProgram( buffer->shader );
{
glUniformMatrix4fv( glGetUniformLocation( buffer->shader, "model" ),
1, 0, model.data);
glUniformMatrix4fv( glGetUniformLocation( buffer->shader, "view" ),
1, 0, view.data);
glUniformMatrix4fv( glGetUniformLocation( buffer->shader, "projection" ),
1, 0, projection.data);
text_buffer_render( buffer );
}
TwDraw( );
glutSwapBuffers( );
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
int width = 600;
int height = 600;
glutInit( &argc, argv );
glutInitWindowSize( width, height );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
// GLenum err = glewInit();
// if (GLEW_OK != err)
// {
// /* Problem: glewInit failed, something is seriously wrong. */
// fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
// exit( EXIT_FAILURE );
// }
// fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
vec4 blue = {{0,0,1,1}};
vec4 black = {{0,0,0,1}};
texture_atlas_t * atlas = texture_atlas_new( 512, 512, 1);
texture_font_t * big = texture_font_new( atlas, "fonts/Vera.ttf", 400);
texture_font_t * small = texture_font_new( atlas, "fonts/Vera.ttf", 18);
texture_font_t * title = texture_font_new( atlas, "fonts/Vera.ttf", 32);
text_buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
line_buffer = vertex_buffer_new( "vertex:3f,color:4f" );
point_buffer = vertex_buffer_new( "vertex:3f,color:4f" );
vec2 pen, origin;
texture_glyph_t *glyph = texture_font_get_glyph( big, L'g' );
origin.x = width/2 - glyph->offset_x - glyph->width/2;
origin.y = height/2 - glyph->offset_y + glyph->height/2;
add_text( text_buffer, big, L"g", &black, &origin );
// title
pen.x = 50;
pen.y = 560;
add_text( text_buffer, title, L"Glyph metrics", &black, &pen );
point_t vertices[] =
{ // Baseline
{0.1*width, origin.y, 0, black},
{0.9*width, origin.y, 0, black},
// Top line
{0.1*width, origin.y + glyph->offset_y, 0, black},
{0.9*width, origin.y + glyph->offset_y, 0, black},
// Bottom line
{0.1*width, origin.y + glyph->offset_y - glyph->height, 0, black},
{0.9*width, origin.y + glyph->offset_y - glyph->height, 0, black},
// Left line at origin
{width/2-glyph->offset_x-glyph->width/2, 0.1*height, 0, black},
{width/2-glyph->offset_x-glyph->width/2, 0.9*height, 0, black},
// Left line
{width/2 - glyph->width/2, .3*height, 0, black},
{width/2 - glyph->width/2, .9*height, 0, black},
// Right line
{width/2 + glyph->width/2, .3*height, 0, black},
{width/2 + glyph->width/2, .9*height, 0, black},
// Right line at origin
{width/2-glyph->offset_x-glyph->width/2+glyph->advance_x, 0.1*height, 0, black},
{width/2-glyph->offset_x-glyph->width/2+glyph->advance_x, 0.7*height, 0, black},
// Width
{width/2 - glyph->width/2, 0.8*height, 0, blue},
{width/2 + glyph->width/2, 0.8*height, 0, blue},
// Advance_x
{width/2-glyph->width/2-glyph->offset_x, 0.2*height, 0, blue},
{width/2-glyph->width/2-glyph->offset_x+glyph->advance_x, 0.2*height, 0, blue},
// Offset_x
{width/2-glyph->width/2-glyph->offset_x, 0.85*height, 0, blue},
{width/2-glyph->width/2, 0.85*height, 0, blue},
// Height
{0.3*width/2, origin.y + glyph->offset_y - glyph->height, 0, blue},
{0.3*width/2, origin.y + glyph->offset_y, 0, blue},
// Offset y
{0.8*width, origin.y + glyph->offset_y, 0, blue},
{0.8*width, origin.y , 0, blue},
};
GLuint indices [] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,
13,14,15,16,17,18,19,20,21,22,23,24,25};
vertex_buffer_push_back( line_buffer, vertices, 26, indices, 26 );
pen.x = width/2 - 48;
pen.y = .2*height - 18;
add_text( text_buffer, small, L"advance_x", &blue, &pen );
pen.x = width/2 - 20;
pen.y = .8*height + 3;
add_text( text_buffer, small, L"width", &blue, &pen );
pen.x = width/2 - glyph->width/2 + 5;
pen.y = .85*height-8;
add_text( text_buffer, small, L"offset_x", &blue, &pen );
pen.x = 0.2*width/2-30;
pen.y = origin.y + glyph->offset_y - glyph->height/2;
add_text( text_buffer, small, L"height", &blue, &pen );
pen.x = 0.8*width+3;
pen.y = origin.y + glyph->offset_y/2 -6;
add_text( text_buffer, small, L"offset_y", &blue, &pen );
pen.x = width/2 - glyph->offset_x - glyph->width/2 - 58;
pen.y = height/2 - glyph->offset_y + glyph->height/2 - 20;
add_text( text_buffer, small, L"Origin", &black, &pen );
GLuint i = 0;
point_t p;
p.color = black;
// Origin point
p.x = width/2 - glyph->offset_x - glyph->width/2;
p.y = height/2 - glyph->offset_y + glyph->height/2;
vertex_buffer_push_back( point_buffer, &p, 1, &i, 1 );
// Advance point
p.x = width/2 - glyph->offset_x - glyph->width/2 + glyph->advance_x;
p.y = height/2 - glyph->offset_y + glyph->height/2;
vertex_buffer_push_back( point_buffer, &p, 1, &i, 1 );
text_shader = shader_load( "shaders/v3f-t2f-c4f.vert",
"shaders/v3f-t2f-c4f.frag" );
shader = shader_load( "shaders/v3f-c4f.vert",
"shaders/v3f-c4f.frag" );
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glutMainLoop( );
return 0;
}
// ------------------------------------------------------------ console_new ---
console_t *
console_new( void )
{
console_t *self = (console_t *) malloc( sizeof(console_t) );
if( !self )
{
return self;
}
self->lines = vector_new( sizeof(wchar_t *) );
self->prompt = (wchar_t *) wcsdup( L">>> " );
self->cursor = 0;
self->buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
self->input[0] = L'\0';
self->killring[0] = L'\0';
self->handlers[__SIGNAL_ACTIVATE__] = 0;
self->handlers[__SIGNAL_COMPLETE__] = 0;
self->handlers[__SIGNAL_HISTORY_NEXT__] = 0;
self->handlers[__SIGNAL_HISTORY_PREV__] = 0;
self->pen.x = self->pen.y = 0;
texture_atlas_t * atlas = texture_atlas_new( 512, 512, 1 );
vec4 white = {{1,1,1,1}};
vec4 black = {{0,0,0,1}};
vec4 none = {{0,0,1,0}};
markup_t normal;
normal.family = "fonts/VeraMono.ttf";
normal.size = 13.0;
normal.bold = 0;
normal.italic = 0;
normal.rise = 0.0;
normal.spacing = 0.0;
normal.gamma = 1.0;
normal.foreground_color = black;
normal.background_color = none;
normal.underline = 0;
normal.underline_color = white;
normal.overline = 0;
normal.overline_color = white;
normal.strikethrough = 0;
normal.strikethrough_color = white;
normal.font = texture_font_new( atlas, "fonts/VeraMono.ttf", 13 );
markup_t bold = normal;
bold.bold = 1;
bold.font = texture_font_new( atlas, "fonts/VeraMoBd.ttf", 13 );
markup_t italic = normal;
italic.italic = 1;
bold.font = texture_font_new( atlas, "fonts/VeraMoIt.ttf", 13 );
markup_t bold_italic = normal;
bold.bold = 1;
italic.italic = 1;
italic.font = texture_font_new( atlas, "fonts/VeraMoBI.ttf", 13 );
markup_t faint = normal;
faint.foreground_color.r = 0.35;
faint.foreground_color.g = 0.35;
faint.foreground_color.b = 0.35;
markup_t error = normal;
error.foreground_color.r = 1.00;
error.foreground_color.g = 0.00;
error.foreground_color.b = 0.00;
markup_t warning = normal;
warning.foreground_color.r = 1.00;
warning.foreground_color.g = 0.50;
warning.foreground_color.b = 0.50;
markup_t output = normal;
output.foreground_color.r = 0.00;
output.foreground_color.g = 0.00;
output.foreground_color.b = 1.00;
self->markup[MARKUP_NORMAL] = normal;
self->markup[MARKUP_ERROR] = error;
self->markup[MARKUP_WARNING] = warning;
self->markup[MARKUP_OUTPUT] = output;
self->markup[MARKUP_FAINT] = faint;
self->markup[MARKUP_BOLD] = bold;
self->markup[MARKUP_ITALIC] = italic;
self->markup[MARKUP_BOLD_ITALIC] = bold_italic;
return self;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 512, 512 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
size_t i;
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
markup_t markup = {
.family = "Bitstream Vera Sans",
.size = 15.0,
.bold = 0,
.italic = 0,
.rise = 0.0,
.spacing = 0.0,
.gamma = 1.5,
.foreground_color = white,
.background_color = none,
.underline = 0,
.underline_color = white,
.overline = 0,
.overline_color = white,
.strikethrough = 0,
.strikethrough_color = white,
.font = 0,
};
atlas = texture_atlas_new( 512, 512, 3 );
buffer = vertex_buffer_new( "v3f:t2f:c4f:1g1f:2g1f" );
markup.font = texture_font_new( atlas, "./Vera.ttf", markup.size );
vec2 pen;
pen.y = 512.0 - markup.font->ascender - 5;
for( i=0; i < 14; ++i )
{
pen.x = 25.0;
markup.gamma = 0.75 + 1.5*i*(1.0/14);
add_text( buffer, &pen,
&markup, L"The quick brown fox jumps over the lazy dog. ",
&markup, L"0123456789.", NULL);
pen.y -= markup.font->height;
}
markup.foreground_color = black;
pen.y = 256.0 - markup.font->ascender - 5;
for( i=0; i < 14; ++i )
{
pen.x = 25.0;
markup.gamma = 0.75 + 1.5*i*(1.0/14);
add_text( buffer, &pen,
&markup, L"The quick brown fox jumps over the lazy dog. ",
&markup, L"0123456789.", NULL);
pen.y -= markup.font->height;
}
// Create the GLSL program
char * vertex_shader_source = read_shader("./markup.vert");
char * fragment_shader_source = read_shader("./markup.frag");
program = build_program( vertex_shader_source, fragment_shader_source );
texture_location = glGetUniformLocation(program, "texture");
pixel_location = glGetUniformLocation(program, "pixel");
glutMainLoop( );
return 0;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
size_t i;
size_t width = 600, height = 250;
glutInit( &argc, argv );
glutInitWindowSize( width, height );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Glyph Outline" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
// GLenum err = glewInit();
// if (GLEW_OK != err)
// {
// /* Problem: glewInit failed, something is seriously wrong. */
// fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
// exit( EXIT_FAILURE );
// }
// fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
atlas = texture_atlas_new( 512, 512, 1 );
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
markup_t markup;
markup.family = "fonts/Vera.ttf";
markup.size = 80.0;
markup.bold = 0;
markup.italic = 0;
markup.rise = 0.0;
markup.spacing = 0.0;
markup.gamma = 1.5;
markup.foreground_color = white;
markup.background_color = none;
markup.underline = 0;
markup.underline_color = white;
markup.overline = 0;
markup.overline_color = white;
markup.strikethrough = 0;
markup.strikethrough_color = white;
markup.font = 0;
markup.font = texture_font_new( atlas, "fonts/Vera.ttf", markup.size );
markup.font->outline_type = 1;
vec2 pen;
pen.x = 40;
pen.y = 190;
for( i=0; i< 10; ++i)
{
markup.font->outline_thickness = 2*((i+1)/10.0);
add_text( buffer, &pen, &markup, L"g", NULL );
}
pen.x = 40;
pen.y = 110;
markup.font->outline_type = 2;
for( i=0; i< 10; ++i)
{
markup.font->outline_thickness = 2*((i+1)/10.0);
add_text( buffer, &pen, &markup, L"g", NULL );
}
pen.x = 40;
pen.y = 30;
markup.font->outline_type = 3;
for( i=0; i< 10; ++i)
{
markup.font->outline_thickness = 1*((i+1)/10.0);
add_text( buffer, &pen, &markup, L"g", NULL );
}
shader = shader_load("shaders/v3f-t2f-c4f.vert",
"shaders/v3f-t2f-c4f.frag");
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glutMainLoop( );
return 0;
}
// ------------------------------------------------------------------- main ---
int main_texture( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 512, 512 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( argv[0] );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
// GLenum err = glewInit();
// if (GLEW_OK != err)
// {
// /* Problem: glewInit failed, something is seriously wrong. */
// fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
// exit( EXIT_FAILURE );
// }
// fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
texture_atlas_t * atlas = texture_atlas_new( 512, 512, 1 );
// const char *filename = "/Users/jie/svn/v8/deps/freetype-gl-read-only/fonts/Vera.ttf";
const char *filename = "/Users/jie/svn/v8/deps/freetype-gl-read-only/fonts/fat.ttf";
// const wchar_t *cache = L" !\"#$%&'()*+,-./0123456789:;<=>?"
// L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
// L"`abcdefghijklmnopqrstuvwxyz{|}~";
wchar_t unicode[6];
unicode[0] = 22909;
unicode[1] = 20320;
unicode[2] = 25438;
unicode[3] = 28156;
unicode[4] = 48;
unicode[5] = 0;
wchar_t* cache = (wchar_t*)unicode;
printf("%d %d\n", cache[0], wcslen(cache));
size_t minsize = 20, maxsize = 40;
size_t count = maxsize - minsize;
size_t i, missed = 0;
for( i=minsize; i < maxsize; ++i )
{
texture_font_t * font = texture_font_new( atlas, filename, i );
missed += texture_font_load_glyphs( font, cache );
texture_font_delete( font );
}
printf( "Matched font : %s\n", filename );
printf( "Number of fonts : %ld\n", count );
printf( "Number of glyphs per font : %ld\n", wcslen(cache) );
printf( "Number of missed glyphs : %ld\n", missed );
printf( "Total number of glyphs : %ld/%ld\n", wcslen(cache)*count - missed, wcslen(cache)*count );
printf( "Texture size : %ldx%ld\n", atlas->width, atlas->height );
printf( "Texture occupancy : %.2f%%\n", 100.0*atlas->used/(float)(atlas->width*atlas->height) );
glClearColor(1,1,1,1);
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, atlas->id );
typedef struct { float x,y,z, u,v, r,g,b,a; } vertex_t;
vertex_t vertices[4] = {
{ 0, 0, 0, 0,1, 0,0,0,1},
{ 0, 512,0, 0,0, 0,0,0,1},
{ 512,512,0, 1,0, 0,0,0,1},
{ 512, 0,0, 1,1, 0,0,0,1}
};
GLuint indices[6] = { 0,1,2, 0,2,3 };
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
vertex_buffer_push_back( buffer, vertices, 4, indices, 6 );
shader = shader_load("/Users/jie/svn/v8/deps/freetype-gl-read-only/shaders/v3f-t2f-c4f.vert",
"/Users/jie/svn/v8/deps/freetype-gl-read-only/shaders/v3f-t2f-c4f.frag");
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glutMainLoop( );
return 0;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
size_t i, j;
wchar_t * font_cache =
L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~";
float font_size = 16.0;
char * font_filename = "fonts/Arial.ttf";
char * header_filename = "arial-16.h";
texture_atlas_t * atlas = texture_atlas_new( 128, 128, 1 );
texture_font_t * font = texture_font_new( atlas, font_filename, font_size );
glutInit( &argc, argv );
glutInitWindowSize( atlas->width, atlas->height );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Freetype OpenGL" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
size_t missed = texture_font_load_glyphs( font, font_cache );
wprintf( L"Font filename : %s\n", font_filename );
wprintf( L"Font size : %.1f\n", font_size );
wprintf( L"Number of glyphs : %ld\n", wcslen(font_cache) );
wprintf( L"Number of missed glyphs : %ld\n", missed );
wprintf( L"Texture size : %ldx%ldx%ld\n",
atlas->width, atlas->height, atlas->depth );
wprintf( L"Texture occupancy : %.2f%%\n",
100.0*atlas->used/(float)(atlas->width*atlas->height) );
wprintf( L"\n" );
wprintf( L"Header filename : %s\n", header_filename );
size_t texture_size = atlas->width * atlas->height *atlas->depth;
size_t glyph_count = font->glyphs->size;
size_t max_kerning_count = 1;
for( i=0; i < glyph_count; ++i )
{
texture_glyph_t *glyph = *(texture_glyph_t **) vector_get( font->glyphs, i );
if( vector_size(glyph->kerning) > max_kerning_count )
{
max_kerning_count = vector_size(glyph->kerning);
}
}
FILE *file = fopen( header_filename, "w" );
// -------------
// Header
// -------------
fwprintf( file,
L"/* ============================================================================\n"
L" * Freetype GL - A C OpenGL Freetype engine\n"
L" * Platform: Any\n"
L" * WWW: http://code.google.com/p/freetype-gl/\n"
L" * ----------------------------------------------------------------------------\n"
L" * Copyright 2011,2012 Nicolas P. Rougier. All rights reserved.\n"
L" *\n"
L" * Redistribution and use in source and binary forms, with or without\n"
L" * modification, are permitted provided that the following conditions are met:\n"
L" *\n"
L" * 1. Redistributions of source code must retain the above copyright notice,\n"
L" * this list of conditions and the following disclaimer.\n"
L" *\n"
L" * 2. Redistributions in binary form must reproduce the above copyright\n"
L" * notice, this list of conditions and the following disclaimer in the\n"
L" * documentation and/or other materials provided with the distribution.\n"
L" *\n"
L" * THIS SOFTWARE IS PROVIDED BY NICOLAS P. ROUGIER ''AS IS'' AND ANY EXPRESS OR\n"
L" * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\n"
L" * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO\n"
L" * EVENT SHALL NICOLAS P. ROUGIER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,\n"
L" * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n"
L" * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n"
L" * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n"
L" * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
L" * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n"
L" * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
L" *\n"
L" * The views and conclusions contained in the software and documentation are\n"
L" * those of the authors and should not be interpreted as representing official\n"
L" * policies, either expressed or implied, of Nicolas P. Rougier.\n"
L" * ===============================================================================\n"
L" */\n");
// ----------------------
// Structure declarations
// ----------------------
fwprintf( file,
L"#include <stddef.h>\n"
L"#ifdef __cplusplus\n"
L"extern \"C\" {\n"
L"#endif\n"
L"\n"
L"typedef struct\n"
L"{\n"
L" wchar_t charcode;\n"
L" float kerning;\n"
L"} kerning_t;\n\n" );
fwprintf( file,
L"typedef struct\n"
L"{\n"
L" wchar_t charcode;\n"
L" int width, height;\n"
L" int offset_x, offset_y;\n"
L" float advance_x, advance_y;\n"
L" float s0, t0, s1, t1;\n"
L" size_t kerning_count;\n"
L" kerning_t kerning[%d];\n"
L"} texture_glyph_t;\n\n", max_kerning_count );
fwprintf( file,
L"typedef struct\n"
L"{\n"
L" size_t tex_width;\n"
L" size_t tex_height;\n"
L" size_t tex_depth;\n"
L" char tex_data[%d];\n"
L" float size;\n"
L" float height;\n"
L" float linegap;\n"
L" float ascender;\n"
L" float descender;\n"
L" size_t glyphs_count;\n"
L" texture_glyph_t glyphs[%d];\n"
L"} texture_font_t;\n\n", texture_size, glyph_count );
fwprintf( file, L"texture_font_t font = {\n" );
// ------------
// Texture data
// ------------
fwprintf( file, L" %d, %d, %d, \n", atlas->width, atlas->height, atlas->depth );
fwprintf( file, L" {" );
for( i=0; i < texture_size; i+= 32 )
{
for( j=0; j < 32 && (j+i) < texture_size ; ++ j)
{
if( (j+i) < (texture_size-1) )
{
fwprintf( file, L"%d,", atlas->data[i+j] );
}
else
{
fwprintf( file, L"%d", atlas->data[i+j] );
}
}
if( (j+i) < texture_size )
{
fwprintf( file, L"\n " );
}
}
fwprintf( file, L"}, \n" );
// -------------------
// Texture information
// -------------------
fwprintf( file, L" %ff, %ff, %ff, %ff, %ff, %d, \n",
font->size, font->height,
font->linegap,font->ascender, font->descender,
glyph_count );
// --------------
// Texture glyphs
// --------------
fwprintf( file, L" {\n" );
for( i=0; i < glyph_count; ++i )
{
texture_glyph_t * glyph = *(texture_glyph_t **) vector_get( font->glyphs, i );
/*
// Debugging information
wprintf( L"glyph : '%lc'\n",
glyph->charcode );
wprintf( L" size : %dx%d\n",
glyph->width, glyph->height );
wprintf( L" offset : %+d%+d\n",
glyph->offset_x, glyph->offset_y );
wprintf( L" advance : %ff, %ff\n",
glyph->advance_x, glyph->advance_y );
wprintf( L" tex coords.: %ff, %ff, %ff, %ff\n",
glyph->u0, glyph->v0, glyph->u1, glyph->v1 );
wprintf( L" kerning : " );
if( glyph->kerning_count )
{
for( j=0; j < glyph->kerning_count; ++j )
{
wprintf( L"('%lc', %ff)",
glyph->kerning[j].charcode, glyph->kerning[j].kerning );
if( j < (glyph->kerning_count-1) )
{
wprintf( L", " );
}
}
}
else
{
wprintf( L"None" );
}
wprintf( L"\n\n" );
*/
// TextureFont
if( (glyph->charcode == L'\'' ) || (glyph->charcode == L'\\' ) )
{
fwprintf( file, L" {L'\\%lc', ", glyph->charcode );
//wprintf( L" {L'\\%lc', ", glyph->charcode );
}
else if( glyph->charcode == (wchar_t)(-1) )
{
fwprintf( file, L" {L'\\0', " );
//wprintf( L" {L'\\0', " );
}
else
{
fwprintf( file, L" {L'%lc', ", glyph->charcode );
//wprintf( L" {L'%lc', ", glyph->charcode );
}
fwprintf( file, L"%d, %d, ", glyph->width, glyph->height );
fwprintf( file, L"%d, %d, ", glyph->offset_x, glyph->offset_y );
fwprintf( file, L"%ff, %ff, ", glyph->advance_x, glyph->advance_y );
fwprintf( file, L"%ff, %ff, %ff, %ff, ", glyph->s0, glyph->t0, glyph->s1, glyph->t1 );
fwprintf( file, L"%d, ", vector_size(glyph->kerning) );
fwprintf( file, L"{ " );
for( j=0; j < vector_size(glyph->kerning); ++j )
{
kerning_t *kerning = (kerning_t *) vector_get( glyph->kerning, j);
wchar_t charcode = kerning->charcode;
if( (charcode == L'\'' ) || (charcode == L'\\') )
{
fwprintf( file, L"{L'\\%lc', %ff}", charcode, kerning->kerning );
}
else if( (charcode != (wchar_t)(-1) ) )
{
fwprintf( file, L"{L'%lc', %ff}", charcode, kerning->kerning );
}
if( j < (vector_size(glyph->kerning)-1))
{
fwprintf( file, L", " );
}
}
fwprintf( file, L"} },\n" );
}
fwprintf( file, L" }\n};\n" );
fwprintf( file,
L"#ifdef __cplusplus\n"
L"}\n"
L"#endif\n" );
return 0;
}
