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better font sample

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This commit is contained in:
Jeremie Roy 2013-05-08 19:55:20 +02:00
parent d1a128d62a
commit b2e506d7aa
1 changed files with 55 additions and 120 deletions
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149
examples/10-font/font.cpp
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@ -12,39 +12,6 @@
#include <stdio.h>
#include <string.h>
static const char* s_shaderPath = NULL;
long int fsize(FILE* _file)
{
long int pos = ftell(_file);
fseek(_file, 0L, SEEK_END);
long int size = ftell(_file);
fseek(_file, pos, SEEK_SET);
return size;
}
static const bgfx::Memory* loadShader(const char* _shaderPath, const char* _shaderName)
{
char out[512];
strcpy(out, _shaderPath);
strcat(out, _shaderName);
strcat(out, ".bin");
FILE* file = fopen(out, "rb");
if (NULL != file)
{
uint32_t size = (uint32_t)fsize(file);
const bgfx::Memory* mem = bgfx::alloc(size+1);
/*size_t ignore =*/ fread(mem->data, 1, size, file);
/*BX_UNUSED(ignore);*/
fclose(file);
mem->data[mem->size-1] = '\0';
return mem;
}
return NULL;
}
int _main_(int /*_argc*/, char** /*_argv*/)
{
uint32_t width = 1280;
@ -67,87 +34,57 @@ int _main_(int /*_argc*/, char** /*_argv*/)
, 0
);
// Setup root path for binary shaders. Shader binaries are different
// for each renderer.
switch (bgfx::getRendererType() )
{
default:
case bgfx::RendererType::Direct3D9:
s_shaderPath = "shaders/dx9/";
break;
case bgfx::RendererType::Direct3D11:
s_shaderPath = "shaders/dx11/";
break;
case bgfx::RendererType::OpenGL:
s_shaderPath = "shaders/glsl/";
break;
case bgfx::RendererType::OpenGLES2:
case bgfx::RendererType::OpenGLES3:
s_shaderPath = "shaders/gles/";
break;
}
const bgfx::Memory* mem;
mem = loadShader(s_shaderPath, "vs_font_basic");
bgfx::VertexShaderHandle vsh = bgfx::createVertexShader(mem);
mem = loadShader(s_shaderPath, "fs_font_basic");
bgfx::FragmentShaderHandle fsh = bgfx::createFragmentShader(mem);
bgfx::ProgramHandle _basicProgram = bgfx::createProgram(vsh, fsh);
bgfx::destroyVertexShader(vsh);
bgfx::destroyFragmentShader(fsh);
mem = loadShader(s_shaderPath, "vs_font_distance_field");
vsh = bgfx::createVertexShader(mem);
mem = loadShader(s_shaderPath, "fs_font_distance_field");
fsh = bgfx::createFragmentShader(mem);
bgfx::ProgramHandle _distanceProgram = bgfx::createProgram(vsh, fsh);
bgfx::destroyVertexShader(vsh);
bgfx::destroyFragmentShader(fsh);
mem = loadShader(s_shaderPath, "vs_font_distance_field_subpixel");
vsh = bgfx::createVertexShader(mem);
mem = loadShader(s_shaderPath, "fs_font_distance_field_subpixel");
fsh = bgfx::createFragmentShader(mem);
bgfx::ProgramHandle _distanceSubpixelProgram = bgfx::createProgram(vsh, fsh);
bgfx::destroyVertexShader(vsh);
bgfx::destroyFragmentShader(fsh);
//init the text rendering system
FontManager* fontManager = new FontManager(512);
TextBufferManager* textBufferManager = new TextBufferManager(fontManager);
textBufferManager->init(_basicProgram, _distanceProgram, _distanceSubpixelProgram);
//load some truetype files
TrueTypeHandle times_tt = fontManager->loadTrueTypeFromFile("c:/windows/fonts/times.ttf");
TrueTypeHandle consola_tt = fontManager->loadTrueTypeFromFile("c:/windows/fonts/consola.ttf");
const char* fontNames[7] = {
"font/droidsans.ttf",
"font/chp-fire.ttf",
"font/bleeding_cowboys.ttf",
"font/mias_scribblings.ttf",
"font/ruritania.ttf",
"font/signika-regular.ttf",
"font/five_minutes.otf"
};
//create some usable font with of a specific size
FontHandle times_24 = fontManager->createFontByPixelSize(times_tt, 0, 24);
const uint32_t fontCount = sizeof(fontNames)/sizeof(const char*);
TrueTypeHandle fontFiles[fontCount];
FontHandle fonts[fontCount];
for(int32_t ii = 0; ii<fontCount ; ++ii)
{
//instantiate a usable font
fontFiles[ii] = fontManager->loadTrueTypeFromFile(fontNames[ii]);
fonts[ii] = fontManager->createFontByPixelSize(fontFiles[ii], 0, 32);
//preload glyphs and blit them to atlas
fontManager->preloadGlyph(times_24, L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ. \n");
fontManager->preloadGlyph(fonts[ii], L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ. \n");
//You can unload the truetype files at this stage, but in that case, the set of glyph's will be limited to the set of preloaded glyph
fontManager->unloadTrueType(times_tt);
fontManager->unloadTrueType(fontFiles[ii]);
}
TrueTypeHandle console_tt = fontManager->loadTrueTypeFromFile("font/visitor1.ttf");
//this font doesn't have any preloaded glyph's but the truetype file is loaded
//so glyph will be generated as needed
FontHandle consola_16 = fontManager->createFontByPixelSize(consola_tt, 0, 16);
FontHandle consola_16 = fontManager->createFontByPixelSize(console_tt, 0, 10);
//create a static text buffer compatible with alpha font
//a static text buffer content cannot be modified after its first submit.
TextBufferHandle staticText = textBufferManager->createTextBuffer(FONT_TYPE_ALPHA, STATIC);
//the pen position represent the top left of the box of the first line of text
textBufferManager->setPenPosition(staticText, 20.0f, 100.0f);
textBufferManager->setPenPosition(staticText, 24.0f, 100.0f);
for(int32_t ii = 0; ii<fontCount ; ++ii)
{
//add some text to the buffer
textBufferManager->appendText(staticText, times_24, L"The quick brown fox jumps over the lazy dog\n");
textBufferManager->appendText(staticText, fonts[ii], L"The quick brown fox jumps over the lazy dog\n");
//the position of the pen is adjusted when there is an endline
}
// Now write some styled text
//setup style colors
textBufferManager->setBackgroundColor(staticText, 0x551111FF);
@ -155,32 +92,30 @@ int _main_(int /*_argc*/, char** /*_argv*/)
textBufferManager->setOverlineColor(staticText, 0x2222FFFF);
textBufferManager->setStrikeThroughColor(staticText, 0x22FF22FF);
//text + bkg
textBufferManager->setStyle(staticText, STYLE_BACKGROUND);
textBufferManager->appendText(staticText, times_24, L"The quick brown fox jumps over the lazy dog\n");
textBufferManager->appendText(staticText, fonts[0], L"The quick ");
//text + strike-through
textBufferManager->setStyle(staticText, STYLE_STRIKE_THROUGH);
textBufferManager->appendText(staticText, times_24, L"The quick brown fox jumps over the lazy dog\n");
textBufferManager->appendText(staticText, fonts[0], L"brown fox ");
//text + overline
textBufferManager->setStyle(staticText, STYLE_OVERLINE);
textBufferManager->appendText(staticText, times_24, L"The quick brown fox jumps over the lazy dog\n");
textBufferManager->appendText(staticText, fonts[0], L"jumps over ");
//text + underline
textBufferManager->setStyle(staticText, STYLE_UNDERLINE);
textBufferManager->appendText(staticText, times_24, L"The quick brown fox jumps over the lazy dog\n");
textBufferManager->appendText(staticText, fonts[0], L"the lazy ");
//text + bkg + strike-through
textBufferManager->setStyle(staticText, STYLE_BACKGROUND|STYLE_STRIKE_THROUGH);
textBufferManager->appendText(staticText, times_24, L"The quick brown fox jumps over the lazy dog\n");
textBufferManager->appendText(staticText, fonts[0], L"dog\n");
//create a transient buffer for realtime data
TextBufferHandle transientText = textBufferManager->createTextBuffer(FONT_TYPE_ALPHA, TRANSIENT);
uint32_t w = 0,h = 0;
while (!processEvents(width, height, debug, reset) )
{
@ -247,17 +182,17 @@ int _main_(int /*_argc*/, char** /*_argv*/)
}
fontManager->unloadTrueType(consola_tt);
fontManager->unloadTrueType(console_tt);
//destroy the fonts
fontManager->destroyFont(consola_16);
fontManager->destroyFont(times_24);
for(int32_t ii = 0; ii<fontCount ; ++ii)
{
fontManager->destroyFont(fonts[ii]);
}
textBufferManager->destroyTextBuffer(staticText);
textBufferManager->destroyTextBuffer(transientText);
bgfx::destroyProgram(_basicProgram);
bgfx::destroyProgram(_distanceProgram);
bgfx::destroyProgram(_distanceSubpixelProgram);
delete textBufferManager;
delete fontManager;