From b2e506d7aa04fc3eb6a335a16e2a21eca306ad83 Mon Sep 17 00:00:00 2001 From: Jeremie Roy Date: Wed, 8 May 2013 19:55:20 +0200 Subject: [PATCH] better font sample --- examples/10-font/font.cpp | 175 ++++++++++++-------------------------- 1 file changed, 55 insertions(+), 120 deletions(-) diff --git a/examples/10-font/font.cpp b/examples/10-font/font.cpp index 802ef7af..cfbf84e9 100644 --- a/examples/10-font/font.cpp +++ b/examples/10-font/font.cpp @@ -12,39 +12,6 @@ #include #include -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; @@ -66,121 +33,89 @@ int _main_(int /*_argc*/, char** /*_argv*/) , 1.0f , 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*); - //preload glyphs and blit them to atlas - fontManager->preloadGlyph(times_24, 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); + TrueTypeHandle fontFiles[fontCount]; + FontHandle fonts[fontCount]; + for(int32_t ii = 0; iiloadTrueTypeFromFile(fontNames[ii]); + fonts[ii] = fontManager->createFontByPixelSize(fontFiles[ii], 0, 32); + //preload glyphs and blit them to atlas + 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(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); - - //add some text to the buffer - textBufferManager->appendText(staticText, times_24, L"The quick brown fox jumps over the lazy dog\n"); - //the position of the pen is adjusted when there is an endline - + textBufferManager->setPenPosition(staticText, 24.0f, 100.0f); + + for(int32_t ii = 0; iiappendText(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); textBufferManager->setUnderlineColor(staticText, 0xFF2222FF); textBufferManager->setOverlineColor(staticText, 0x2222FFFF); - textBufferManager->setStrikeThroughColor(staticText, 0x22FF22FF); - + 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->destroyFont(consola_16); - fontManager->destroyFont(times_24); + fontManager->unloadTrueType(console_tt); + //destroy the fonts + fontManager->destroyFont(consola_16); + for(int32_t ii = 0; iidestroyFont(fonts[ii]); + } textBufferManager->destroyTextBuffer(staticText); textBufferManager->destroyTextBuffer(transientText); - bgfx::destroyProgram(_basicProgram); - bgfx::destroyProgram(_distanceProgram); - bgfx::destroyProgram(_distanceSubpixelProgram); - delete textBufferManager; delete fontManager;