void prepare_shader(void)
{
// build the shader program
vert = shader_load(GL_VERTEX_SHADER, "data/render.vert");
frag = shader_load(GL_FRAGMENT_SHADER, "data/render.frag");
prog = glCreateProgram();
glAttachShader(prog, vert);
glAttachShader(prog, frag);
glLinkProgram(prog);
GLint param;
glGetProgramiv(prog, GL_LINK_STATUS, ¶m);
printf("*** Shader linking %s.\n",
param == GL_FALSE ? "went as expected" : "worked");
printProgramInfoLog(prog);
// prepare uniforms etc for the shader
s_angle = glGetUniformLocation(prog, "angle");
s_pos = glGetUniformLocation(prog, "position");
s_pixelarc = glGetUniformLocation(prog, "pixel_arc");
s_fovdepth = glGetUniformLocation(prog, "fovdepth");
s_bPool = glGetUniformLocation(prog, "bPool");
s_nPool = glGetUniformLocation(prog, "nPool");
// s_now = glGetUniformLocation(prog, "now");
// glUniform1i(s_now, now);
glUniformui64NV(s_nPool, nodepool_devptr);
// glUniform1i(s_bPool, 0);
// glMakeBufferNonResidentNV(GL_ARRAY_BUFFER_ARB);
}
// ------------------------------------------------------------------- init ---
void init( void )
{
atlas = texture_atlas_new( 512, 512, 1 );
auto filename = "fonts/Vera.ttf";
auto text = "A Quick Brown Fox Jumps Over The Lazy Dog 0123456789";
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
vec2 pen = {0,0};
auto black = vec4{1,1,1,1};
auto font = texture_font_new_from_file( atlas, 48, filename );
font->rendermode = RENDER_SIGNED_DISTANCE_FIELD;
auto bbox = add_text( buffer, font, text, &black, &pen );
size_t i;
auto vertices = buffer->vertices;
for( i=0; i< vector_size(vertices); ++i ) {
auto vert = (vertex *) vector_get(vertices,i);
vert->x -= (int)(bbox.x + bbox.width/2);
vert->y -= (int)(bbox.y + bbox.height/2);
}
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_RED, atlas->width, atlas->height,
0, GL_RED, GL_UNSIGNED_BYTE, atlas->data );
shader = shader_load( "shaders/distance-field-2v5.vert",
"shaders/distance-field-2v5.frag" );
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
}
// ------------------------------------------------------------------- init ---
void init( void )
{
atlas = texture_atlas_new( 512, 512, 1 );
font = texture_font_new_from_file( atlas, 32, "../media/fonts/Vera.ttf" );
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( "../media/fonts/Vera.ttf", "@", 512, 64, 0.1);
vector_push_back( font->glyphs, &glyph );
texture_atlas_upload( atlas );
glyph = texture_font_get_glyph( font, "@");
GLuint indices[6] = {0,1,2, 0,2,3};
vertex_t vertices[4] = { { -.5,-.5,0, glyph->s0,glyph->t1, 0,0,0,1 },
{ -.5, .5,0, glyph->s0,glyph->t0, 0,0,0,1 },
{ .5, .5,0, glyph->s1,glyph->t0, 0,0,0,1 },
{ .5,-.5,0, glyph->s1,glyph->t1, 0,0,0,1 } };
buffer = vertex_buffer_new( "vertex:3f,tex_coord:2f,color:4f" );
vertex_buffer_push_back( buffer, vertices, 4, indices, 6 );
program = shader_load( "../media/shaders/distance-field.vert",
"../media/shaders/distance-field-2.frag" );
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
}
// ------------------------------------------------------------------- init ---
void init( void )
{
control_key_handled = 0;
console = console_new();
console_print( console,
"OpenGL Freetype console\n"
"Copyright 2011 Nicolas P. Rougier. All rights reserved.\n \n" );
console_connect( console, "activate", console_activate );
console_connect( console, "complete", console_complete );
console_connect( console, "history-prev", console_history_prev );
console_connect( console, "history-next", console_history_next );
glClearColor( 1.00, 1.00, 1.00, 1.00 );
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 );
}
static void
greets_display_effect (sync_info *sync, void *params, int iparam)
{
greets_data *gdata = (greets_data *) params;
f32 indmtx[2][3] = { { 0.5, 0.0, 0.0 },
{ 0.0, 0.5, 0.0 } };
float scroll = (float) sync->time_offset / 900.0;
int i, startpos;
/*world_set_pos_lookat_up (gdata->world,
(guVector) spooky_ghost_data_0.scene.pos,
(guVector) spooky_ghost_data_0.scene.lookat,
(guVector) spooky_ghost_data_0.scene.up);*/
GX_SetIndTexMatrix (GX_ITM_0, indmtx, 5);
world_display (gdata->world);
GX_SetZMode (GX_TRUE, GX_LEQUAL, GX_TRUE);
shader_load (gdata->tile_shader);
startpos = (int) (scroll * 8.0) - 32;
for (i = 0; i < 4; i++)
put_text (gdata->tileidx, i, 0, message, sizeof (message) - 1,
startpos * 4 + i, 32);
GX_SetTevColor (GX_TEVREG0, (GXColor) { 255, 255, 255, 255 });
render_texture (gdata, 5.5, scroll);
//screenspace_rect (gdata->tile_shader, GX_VTXFMT0, 0);
}
// ------------------------------------------------------------------- main ---
int
main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitDisplayMode( GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH );
glutInitWindowSize( 256, 256) ;
glutCreateWindow( argv[0] );
glutDisplayFunc( display );
glutReshapeFunc( reshape );
glutKeyboardFunc( keyboard );
buffer = vertex_buffer_new( "v3f:c4f:t3f" );
program = shader_load( "shaders/line-aa.vert",
"shaders/line-aa-round.frag" );
size_t n = 20, i;
vec4 color = {{0,0,0,1}};
for (i = 0; i < n; ++i)
{
float x0 = 30;
float y0 = 230 - i*10;
float thickness = (i+1)/10.0;
vec2 points[] = { {{ x0+ 0, y0+10 }}, {{x0+ 40, y0-10 }}, {{ x0+ 80, y0+10 }},
{{ x0+120, y0-10 }}, {{ x0+160, y0+10 }}, {{ x0+200, y0-10 }} };
vertex_buffer_add_polyline( buffer, points, 6, color, thickness, round_join, round_cap);
}
glutMainLoop();
return 0;
}
// ------------------------------------------------------------------- init ---
void init( void )
{
size_t i;
vec2 pen = {{0,0}};
vec4 color = {{0,0,0,1}};
atlas = texture_atlas_new( 512, 512, 1 );
font = texture_font_new_from_file( atlas, 12, "../media/fonts/VeraMono.ttf" );
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("../media/shaders/v3f-t2f-c4f.vert",
"../media/shaders/v3f-t2f-c4f.frag");
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
}
// ------------------------------------------------------------------- main ---
int
main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 800, 600 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( "Signed Distance Field" );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( 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
texture_font_t *font = 0;
texture_atlas_t *atlas = texture_atlas_new( 512, 512, 1 );
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" );
vec2 pen = {{0,0}};
vec4 black = {{1,1,1,1}};
font = texture_font_new_from_file( atlas, 48, filename );
vec4 bbox = add_text( buffer, font, text, &black, &pen );
size_t i;
vector_t * vertices = buffer->vertices;
for( i=0; i< vector_size(vertices); ++i )
{
vertex_t * vertex = (vertex_t *) vector_get(vertices,i);
vertex->x -= (int)(bbox.x + bbox.width/2);
vertex->y -= (int)(bbox.y + bbox.height/2);
}
glBindTexture( GL_TEXTURE_2D, atlas->id );
fprintf( stderr, "Generating distance map...\n" );
unsigned char *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 );
shader = shader_load( "shaders/distance-field-2.vert",
"shaders/distance-field-2.frag" );
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glutMainLoop( );
return 0;
}
static int
lload(lua_State *L) {
int prog = (int)luaL_checkinteger(L,1);
const char *fs = luaL_checkstring(L, 2);
const char *vs = luaL_checkstring(L, 3);
shader_load(prog, fs, vs);
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_from_file( atlas, 128, "fonts/ObelixPro.ttf" );
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;
}
GLuint shader_loadVersion(const char *filenm, int GLver)
{
if(GLver > 100)
return -1;
char ver[4] = {0,0,0,0};
snprintf(ver, 4, "%d", GLver);
char buf[32] = SHADER_DIR;
strcat(buf, filenm);
return shader_load(buf);
}
bool CFont::Display()
{
if (nullptr == font_manager || nullptr == buffer)
return false;
// TODO: check if we need to load a glsl shader
if (0 == text_shader)
{
FBString appPath;
appPath = FBSystem::TheOne().ApplicationPath;
appPath = appPath + "\\plugins";
FBString vert(appPath, SHADER_VERTEX);
FBString frag(appPath, SHADER_FRAGMENT);
text_shader = shader_load(vert, frag);
}
if (0 == text_shader)
return false;
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glUseProgram(text_shader);
{
glUniformMatrix4fv(glGetUniformLocation(text_shader, "model"),
1, 0, model.data);
glUniformMatrix4fv(glGetUniformLocation(text_shader, "view"),
1, 0, view.data);
glUniformMatrix4fv(glGetUniformLocation(text_shader, "projection"),
1, 0, projection.data);
glUniform1i(glGetUniformLocation(text_shader, "tex"), 0);
glUniform3f(glGetUniformLocation(text_shader, "pixel"),
1.0f / font_manager->atlas->width,
1.0f / font_manager->atlas->height,
(float)font_manager->atlas->depth);
glEnable(GL_BLEND);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, font_manager->atlas->id);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendColor(1, 1, 1, 1);
vertex_buffer_render(buffer->buffer, GL_TRIANGLES);
glBindTexture(GL_TEXTURE_2D, 0);
glBlendColor(0, 0, 0, 0);
glUseProgram(0);
glDisable(GL_BLEND);
}
return true;
}
text_buffer_t *
text_buffer_new( size_t depth,
const char * vert_filename,
const char * frag_filename )
{
GLuint program = shader_load( vert_filename, frag_filename );
text_buffer_t * p = text_buffer_new_with_program( depth, program );
return p;
}
void shader_init(shader_t *s, const char *program)
{
s->program = shader_load(program);
s->nattribs = 0;
s->noutputs = 0;
s->ntexture_targets = 0;
s->attrib_stride = 0;
s->attribs = malloc(sizeof(struct shader_attrib_t) * 16);
s->outputs = malloc(sizeof(struct shader_fragment_output_t) * 16);
s->texture_targets = malloc(sizeof(struct shader_texture_target_t) * 16);
}
// ------------------------------------------------------------------- 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 )
{
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( 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( 400, 400 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( argv[0] );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
//glutTimerFunc( 1000/60, timer, 1000/60 ); // not working on some systems (bug in GLUT)
glutIdleFunc(display);
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) );
typedef struct { float x,y,z;} xyz;
typedef struct { float r,g,b,a;} rgba;
typedef struct { xyz position, normal; rgba color;} vertex;
xyz v[] = { { 1, 1, 1}, {-1, 1, 1}, {-1,-1, 1}, { 1,-1, 1},
{ 1,-1,-1}, { 1, 1,-1}, {-1, 1,-1}, {-1,-1,-1} };
xyz n[] = { { 0, 0, 1}, { 1, 0, 0}, { 0, 1, 0} ,
{-1, 0, 1}, { 0,-1, 0}, { 0, 0,-1} };
rgba c[] = { {1, 1, 1, 1}, {1, 1, 0, 1}, {1, 0, 1, 1}, {0, 1, 1, 1},
{1, 0, 0, 1}, {0, 0, 1, 1}, {0, 1, 0, 1}, {0, 0, 0, 1} };
vertex vertices[24] = {
{v[0],n[0],c[0]}, {v[1],n[0],c[1]}, {v[2],n[0],c[2]}, {v[3],n[0],c[3]},
{v[0],n[1],c[0]}, {v[3],n[1],c[3]}, {v[4],n[1],c[4]}, {v[5],n[1],c[5]},
{v[0],n[2],c[0]}, {v[5],n[2],c[5]}, {v[6],n[2],c[6]}, {v[1],n[2],c[1]},
{v[1],n[3],c[1]}, {v[6],n[3],c[6]}, {v[7],n[3],c[7]}, {v[2],n[3],c[2]},
{v[7],n[4],c[7]}, {v[4],n[4],c[4]}, {v[3],n[4],c[3]}, {v[2],n[4],c[2]},
{v[4],n[5],c[4]}, {v[7],n[5],c[7]}, {v[6],n[5],c[6]}, {v[5],n[5],c[5]} };
GLuint indices[24] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,
12,13,14,15, 16,17,18,19, 20,21,22,23 };
cube = vertex_buffer_new( "vertex:3f,normal:3f,color:4f" );
vertex_buffer_push_back( cube, vertices, 24, indices, 24 );
shader = shader_load("shaders/cube.vert","shaders/cube.frag");
init( );
glutMainLoop( );
return EXIT_SUCCESS;
}
// ----------------------------------------------------------------------------
text_buffer_t *
text_buffer_new( size_t depth )
{
text_buffer_t *self = (text_buffer_t *) malloc (sizeof(text_buffer_t));
self->buffer = vertex_buffer_new( "v3f:t2f:c4f:1g1f:2g1f" );
self->manager = font_manager_new( 512, 512, depth );
self->shader = shader_load("shaders/text.vert",
"shaders/text.frag");
self->shader_texture = glGetUniformLocation(self->shader, "texture");
self->shader_pixel = glGetUniformLocation(self->shader, "pixel");
self->line_start = 0;
self->line_ascender = 0;
self->line_descender = 0;
return self;
}
int
main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( argv[0] );
glutReshapeFunc( on_reshape );
glutDisplayFunc( on_display );
glutKeyboardFunc( on_key_press );
glutSpecialFunc( on_special_key_press );
glutReshapeWindow( 600,400 );
#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
console = console_new();
console_print( console,
L"OpenGL Freetype console\n"
L"Copyright 2011 Nicolas P. Rougier. All rights reserved.\n \n" );
console_connect( console, "activate", console_activate );
console_connect( console, "complete", console_complete );
console_connect( console, "history-prev", console_history_prev );
console_connect( console, "history-next", console_history_next );
glClearColor( 1.00, 1.00, 1.00, 1.00 );
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 0;
}
// ----------------------------------------------------------------------------
text_buffer_t *
text_buffer_new( size_t depth )
{
text_buffer_t *self = (text_buffer_t *) malloc (sizeof(text_buffer_t));
self->buffer = vertex_buffer_new(
"vertex:3f,tex_coord:2f,color:4f,ashift:1f,agamma:1f" );
self->manager = font_manager_new( 512, 512, depth );
self->shader = shader_load("shaders/text.vert",
"shaders/text.frag");
self->shader_texture = glGetUniformLocation(self->shader, "texture");
self->shader_pixel = glGetUniformLocation(self->shader, "pixel");
self->line_start = 0;
self->line_ascender = 0;
self->line_descender = 0;
return self;
}
Shader_t *shader_loadFromFiles(const char *aVertShaderPath, const char *aFragShaderPath)
{
char *vertShaderSource = NULL, *fragShaderSource = NULL;
size_t vertShaderLength, fragShaderLength;
util_readFile(aVertShaderPath, &vertShaderLength, &vertShaderSource);
dynamo_assert(vertShaderLength > 0 && vertShaderSource != NULL, "Could not read vertex shader source");
util_readFile(aFragShaderPath, &fragShaderLength, &fragShaderSource);
dynamo_assert(fragShaderLength > 0 && fragShaderSource != NULL, "Could not read fragment shader source");
Shader_t *out = shader_load(vertShaderSource, fragShaderSource);
free(vertShaderSource);
free(fragShaderSource);
return out;
}
// ------------------------------------------------------------------- init ---
void init( void )
{
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_from_file( atlas, 128, "fonts/LuckiestGuy.ttf" );
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->rendermode = RENDER_OUTLINE_POSITIVE;
font->outline_thickness = 7;
add_text( buffer, font, "Freetype GL", pen, black, black );
font->rendermode = RENDER_OUTLINE_POSITIVE;
font->outline_thickness = 5;
add_text( buffer, font, "Freetype GL", pen, yellow, yellow );
font->rendermode = RENDER_OUTLINE_EDGE;
font->outline_thickness = 3;
add_text( buffer, font, "Freetype GL", pen, black, black );
font->rendermode = RENDER_NORMAL;
font->outline_thickness = 0;
add_text( buffer, font, "Freetype GL", pen, orange1, orange2 );
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_RED, atlas->width, atlas->height,
0, GL_RED, GL_UNSIGNED_BYTE, atlas->data );
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 );
}
// ------------------------------------------------------------------- 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 );
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) );
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_from_file( atlas, 32, "fonts/Vera.ttf" );
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;
}
void
skybox_render (skybox_info *skybox)
{
const u32 vtxfmt = GX_VTXFMT0;
int face;
GX_ClearVtxDesc ();
GX_SetVtxDesc (GX_VA_POS, GX_INDEX8);
GX_SetVtxDesc (GX_VA_TEX0, GX_DIRECT);
GX_SetArray (GX_VA_POS, vertices, 3 * sizeof (f32));
GX_SetVtxAttrFmt (vtxfmt, GX_VA_POS, GX_POS_XYZ, GX_F32, 0);
GX_SetVtxAttrFmt (vtxfmt, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
GX_SetCullMode (GX_CULL_BACK);
for (face = 0; face < 6; face++)
{
shader_load (skybox->face_shader[face]);
GX_Begin (GX_TRIANGLESTRIP, vtxfmt, 4);
GX_Position1x8 (faces[face][0]);
GX_TexCoord2f32 (0, 1);
GX_Position1x8 (faces[face][1]);
GX_TexCoord2f32 (0, 0);
GX_Position1x8 (faces[face][2]);
GX_TexCoord2f32 (1, 1);
GX_Position1x8 (faces[face][3]);
GX_TexCoord2f32 (1, 0);
GX_End ();
}
}
// ------------------------------------------------------------------- init ---
void init( void )
{
texture_font_t *font = 0;
texture_atlas_t *atlas = texture_atlas_new( 512, 512, 1 );
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" );
vec2 pen = {{0,0}};
vec4 black = {{1,1,1,1}};
font = texture_font_new_from_file( atlas, 48, filename );
vec4 bbox = add_text( buffer, font, text, &black, &pen );
texture_atlas_upload( font->atlas );
size_t i;
vector_t * vertices = buffer->vertices;
for( i=0; i< vector_size(vertices); ++i )
{
vertex_t * vertex = (vertex_t *) vector_get(vertices,i);
vertex->x -= (int)(bbox.x + bbox.width/2);
vertex->y -= (int)(bbox.y + bbox.height/2);
}
glBindTexture( GL_TEXTURE_2D, atlas->id );
fprintf( stderr, "Generating distance map...\n" );
unsigned char *map = make_distance_mapb(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 );
shader = shader_load( "shaders/distance-field.vert",
"shaders/distance-field-2.frag" );
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
}
// ------------------------------------------------------------------- init ---
void init( void )
{
typedef struct { float x,y,z;} xyz;
typedef struct { float r,g,b,a;} rgba;
typedef struct { xyz position, normal; rgba color;} vertex;
xyz v[] = { { 1, 1, 1}, {-1, 1, 1}, {-1,-1, 1}, { 1,-1, 1},
{ 1,-1,-1}, { 1, 1,-1}, {-1, 1,-1}, {-1,-1,-1} };
xyz n[] = { { 0, 0, 1}, { 1, 0, 0}, { 0, 1, 0} ,
{-1, 0, 1}, { 0,-1, 0}, { 0, 0,-1} };
rgba c[] = { {1, 1, 1, 1}, {1, 1, 0, 1}, {1, 0, 1, 1}, {0, 1, 1, 1},
{1, 0, 0, 1}, {0, 0, 1, 1}, {0, 1, 0, 1}, {0, 0, 0, 1} };
vertex vertices[24] = {
{v[0],n[0],c[0]}, {v[1],n[0],c[1]}, {v[2],n[0],c[2]}, {v[3],n[0],c[3]},
{v[0],n[1],c[0]}, {v[3],n[1],c[3]}, {v[4],n[1],c[4]}, {v[5],n[1],c[5]},
{v[0],n[2],c[0]}, {v[5],n[2],c[5]}, {v[6],n[2],c[6]}, {v[1],n[2],c[1]},
{v[1],n[3],c[1]}, {v[6],n[3],c[6]}, {v[7],n[3],c[7]}, {v[2],n[3],c[2]},
{v[7],n[4],c[7]}, {v[4],n[4],c[4]}, {v[3],n[4],c[3]}, {v[2],n[4],c[2]},
{v[4],n[5],c[4]}, {v[7],n[5],c[7]}, {v[6],n[5],c[6]}, {v[5],n[5],c[5]} };
GLuint indices[24] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,
12,13,14,15, 16,17,18,19, 20,21,22,23 };
cube = vertex_buffer_new( "vertex:3f,normal:3f,color:4f" );
vertex_buffer_push_back( cube, vertices, 24, indices, 24 );
shader = shader_load("../media/shaders/cube.vert","../media/shaders/cube.frag");
mat4_set_identity( &projection );
mat4_set_identity( &model );
mat4_set_identity( &view );
glPolygonOffset( 1, 1 );
glClearColor( 1.0, 1.0, 1.0, 1.0 );
glEnable( GL_DEPTH_TEST );
glEnable( GL_COLOR_MATERIAL );
glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glEnable( GL_LINE_SMOOTH );
}
// ------------------------------------------------------------------- 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;
}
