// ------------------------------------------------------------------- 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;
}
// ------------------------------------------- texture_font_new_from_memory ---
texture_font_t *
texture_font_new_from_memory(texture_atlas_t *atlas, float pt_size,
const void *memory_base, size_t memory_size)
{
texture_font_t *self;
assert(memory_base);
assert(memory_size);
self = (texture_font_t*)calloc(1, sizeof(*self));
if (!self) {
fprintf(stderr,
"line %d: No more memory for allocating data\n", __LINE__);
return NULL;
}
self->atlas = atlas;
self->size = pt_size;
self->location = TEXTURE_FONT_MEMORY;
self->memory.base = memory_base;
self->memory.size = memory_size;
if (texture_font_init(self)) {
texture_font_delete(self);
return NULL;
}
return self;
}
void opengl_font_delete(font_t* font)
{
opengl_font_t* f = (opengl_font_t*)font->data;
texture_atlas_delete(f->atlas);
texture_font_delete(f->font);
free(f);
}
// --------------------------------------------- texture_font_new_from_file ---
texture_font_t *
texture_font_new_from_file(texture_atlas_t *atlas, const float pt_size,
const char *filename)
{
texture_font_t *self;
assert(filename);
self = (texture_font_t*)calloc(1, sizeof(*self));
if (!self) {
fprintf(stderr,
"line %d: No more memory for allocating data\n", __LINE__);
return NULL;
}
self->atlas = atlas;
self->size = pt_size;
self->location = TEXTURE_FONT_FILE;
self->filename = _strdup(filename);
if (texture_font_init(self)) {
texture_font_delete(self);
return NULL;
}
return self;
}
Font::~Font()
{
texture_font_delete(m_font);
texture_atlas_delete(m_atlas);
vertex_buffer_delete(m_buffer);
delete m_fontFile;
}
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 )
{
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 );
glewExperimental = GL_TRUE;
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_from_file( atlas, 72, filename );
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;
}
// ------------------------------------------------------------------- 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 );
glewExperimental = GL_TRUE;
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_from_file( atlas, i, filename );
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);
}
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);
}
// ---------------------------------------------------- font_manager_delete ---
void
font_manager_delete( font_manager_t * self )
{
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 );
texture_font_delete( font );
}
vector_delete( self->fonts );
texture_atlas_delete( self->atlas );
if( self->cache )
{
free( self->cache );
}
free( self );
}
// ----------------------------------------------- font_manager_delete_font ---
void
font_manager_delete_font( font_manager_t * self,
texture_font_t * font)
{
size_t i;
texture_font_t *other;
assert( self );
assert( font );
for( i=0; i<self->fonts->size;++i )
{
other = (texture_font_t *) vector_get( self->fonts, i );
if ( (strcmp(font->filename, other->filename) == 0) && ( font->size == other->size) )
{
vector_erase( self->fonts, i);
break;
}
}
texture_font_delete( font );
}
// ------------------------------------------------------------------- init ---
void init( void )
{
size_t i;
texture_font_t *font = 0;
atlas = texture_atlas_new( 512, 512, 3 );
const char * filename = "fonts/Vera.ttf";
char * text = "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_from_file( atlas, i, filename );
pen.x = 0;
pen.y -= font->height;
texture_font_load_glyphs( font, text );
add_text( buffer, font, text, &color, &pen );
texture_font_delete( font );
}
glGenTextures( 1, &atlas->id );
glBindTexture( GL_TEXTURE_2D, atlas->id );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, atlas->width, atlas->height,
0, GL_RGB, GL_UNSIGNED_BYTE, atlas->data );
shader = shader_load( "shaders/text.vert",
"shaders/text.frag" );
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
}
// ------------------------------------------------------------------- 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 )
{
GLFWwindow* window;
glfwSetErrorCallback( error_callback );
if (!glfwInit( ))
{
exit( EXIT_FAILURE );
}
glfwWindowHint( GLFW_VISIBLE, GL_TRUE );
glfwWindowHint( GLFW_RESIZABLE, GL_FALSE );
window = glfwCreateWindow( 1, 1, "Freetype OpenGL / LCD filtering", NULL, NULL );
if (!window)
{
glfwTerminate( );
exit( EXIT_FAILURE );
}
glfwMakeContextCurrent( window );
glfwSwapInterval( 1 );
glfwSetFramebufferSizeCallback( window, reshape );
glfwSetWindowRefreshCallback( window, display );
glfwSetKeyCallback( window, keyboard );
#ifndef __APPLE__
glewExperimental = GL_TRUE;
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) );
#endif
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_from_file( atlas, i, filename );
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 );
glfwSetWindowSize( window, 800, 500 );
glfwShowWindow( window );
while(!glfwWindowShouldClose( window ))
{
display( window );
glfwPollEvents( );
}
glfwDestroyWindow( window );
glfwTerminate( );
return 0;
}
// ----------------------------------------------------------- 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 = "Source Sans Pro",
.size = 10.0,
.bold = 0,
.italic = 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( text_buffer );
texture_atlas_t * atlas = font_manager->atlas;
texture_atlas_clear( atlas );
if( p_family == VERA)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/Vera.ttf" );
}
else if( p_family == VERA_MONO)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/VeraMono.ttf" );
}
else if( p_family == LUCKIEST_GUY)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/LuckiestGuy.ttf" );
}
else if( p_family == SOURCE_SANS )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceSansPro-Regular.ttf" );
}
else if( p_family == SOURCE_CODE )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceCodePro-Regular.ttf" );
}
else if( p_family == OLD_STANDARD )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/OldStandard-Regular.ttf" );
}
else if( p_family == LOBSTER )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/Lobster-Regular.ttf" );
}
else
{
fprintf( stderr, "Error : Unknown family type\n" );
return;
}
if (!font)
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*255);
font->lcd_weights[1] = (unsigned char)(p_secondary*norm*255);
font->lcd_weights[2] = (unsigned char)(p_primary*norm*255);
font->lcd_weights[3] = (unsigned char)(p_secondary*norm*255);
font->lcd_weights[4] = (unsigned char)(p_tertiary*norm*255);
pen.x = 10;
pen.y = 600 - font->height - 10;
text_buffer_printf( text_buffer, &pen, &markup, text, NULL );
// Post-processing for width and orientation
vertex_buffer_t * vbuffer = text_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 = fabs(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);
}
glBindTexture( GL_TEXTURE_2D, font_manager->atlas->id );
GLenum gl_format = (font_manager->atlas->depth == LCD_FILTERING_OFF) ?
GL_RED : GL_RGB;
glTexImage2D( GL_TEXTURE_2D, 0, gl_format, font_manager->atlas->width,
font_manager->atlas->height, 0, gl_format, GL_UNSIGNED_BYTE,
font_manager->atlas->data );
texture_font_delete( font );
}
// ------------------------------------------------------------------- quit ---
void reset( void )
{
p_family = VERA;
p_size = 12.0;
p_invert = 0;
p_kerning = 1;
p_hinting = 1;
p_lcd_filtering = 1;
p_gamma = 1.75;
p_interval = 0.0;
p_weight = 0.33;
p_width = 1.0;
p_faux_weight = 0.0;
p_faux_italic = 0.0;
// FT_LCD_FILTER_LIGHT
p_primary = 1.0/3.0;
p_secondary = 1.0/3.0;
p_tertiary = 0.0/3.0;
// FT_LCD_FILTER_DEFAULT
// p_primary = 3.0/9.0;
// p_secondary = 2.0/9.0;
// p_tertiary = 1.0/9.0;
build_buffer();
}
// ----------------------------------------------------------- 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 = "Source Sans Pro",
.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_from_file( atlas, p_size, "fonts/Vera.ttf" );
}
else if( p_family == VERA_MONO)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/VeraMono.ttf" );
}
else if( p_family == LUCKIEST_GUY)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/LuckiestGuy.ttf" );
}
else if( p_family == SOURCE_SANS )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceSansPro-Regular.ttf" );
}
else if( p_family == SOURCE_CODE )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceCodePro-Regular.ttf" );
}
else if( p_family == OLD_STANDARD )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/OldStandard-Regular.ttf" );
}
else if( p_family == LOBSTER )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/Lobster-Regular.ttf" );
}
else
{
fprintf( stderr, "Error : Unknown family type\n" );
return;
}
if (!font)
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( GLFWwindow* window )
{
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( );
glfwSwapBuffers( window );
}
TextureFont::~TextureFont() {
for(std::map<void*, TextureGlyph*>::iterator it = glyphs_.begin(); it != glyphs_.end(); ++it)
delete it->second;
texture_font_delete(static_cast<texture_font_t*>(self_));
}
Font::~Font() {
if(this->FontHandle == 0) {
return;
}
texture_font_delete(this->FontHandle);
}
void Font::doRelease() {
texture_font_delete(font);
font = 0;
}
