175 lines
5.1 KiB
C++
175 lines
5.1 KiB
C++
/*
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* Copyright 2013 Jeremie Roy. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#include <bgfx.h>
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#include <bx/bx.h>
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#include <bx/timer.h>
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#include "../common/entry.h"
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#include "../common/dbg.h"
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#include "../common/math.h"
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#include "../common/processevents.h"
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#include "../common/font/font_manager.h"
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#include "../common/font/text_buffer_manager.h"
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#include <stdio.h>
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#include <string.h>
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inline void mtxTranslate(float* _result, float x, float y, float z)
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{
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memset(_result, 0, sizeof(float)*16);
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_result[0] = _result[5] = _result[10] = _result[15] = 1.0f;
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_result[12] = x;
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_result[13] = y;
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_result[14] = z;
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}
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inline void mtxScale(float* _result, float x, float y, float z)
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{
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memset(_result, 0, sizeof(float)*16);
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_result[0] = x;
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_result[5] = y;
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_result[10] = z;
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_result[15] = 1.0f;
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}
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int _main_(int /*_argc*/, char** /*_argv*/)
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{
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uint32_t width = 1280;
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uint32_t height = 720;
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uint32_t debug = BGFX_DEBUG_TEXT;
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uint32_t reset = 0;
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bgfx::init();
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bgfx::reset(width, height);
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// Enable debug text.
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bgfx::setDebug(debug);
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// Set view 0 clear state.
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bgfx::setViewClear(0
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, BGFX_CLEAR_COLOR_BIT|BGFX_CLEAR_DEPTH_BIT
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//, 0x303030ff
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//, 0xffffffff
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, 0x000000FF
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, 1.0f
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, 0
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);
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//init the text rendering system
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FontManager* fontManager = new FontManager(512);
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TextBufferManager* textBufferManager = new TextBufferManager(fontManager);
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//load a truetype files
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/*
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"font/droidsans.ttf",
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"font/chp-fire.ttf",
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"font/bleeding_cowboys.ttf",
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"font/mias_scribblings.ttf",
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"font/ruritania.ttf",
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"font/signika-regular.ttf",
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"font/five_minutes.otf"
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*/
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TrueTypeHandle times_tt = fontManager->loadTrueTypeFromFile("font/bleeding_cowboys.ttf");
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//create a distance field font
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FontHandle distance_font = fontManager->createFontByPixelSize(times_tt, 0, 48, FONT_TYPE_DISTANCE);
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//create a scalled down version of the same font (without adding anything to the atlas)
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FontHandle smaller_font = fontManager->createScaledFontToPixelSize(distance_font, 32);
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//preload glyph and generate (generate bitmap's)
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fontManager->preloadGlyph(distance_font, L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.,\" \n");
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//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
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fontManager->unloadTrueType(times_tt);
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TextBufferHandle staticText = textBufferManager->createTextBuffer(FONT_TYPE_DISTANCE, STATIC);
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textBufferManager->setTextColor(staticText, 0xDD0000FF);
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//textBufferManager->appendText(staticText, distance_font, L"The quick brown fox jumps over the lazy dog\n");
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//textBufferManager->appendText(staticText, distance_font, L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\n");
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textBufferManager->appendText(staticText, distance_font, L"BGFX ");
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textBufferManager->appendText(staticText, smaller_font, L"bgfx");
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int64_t timeOffset = bx::getHPCounter();
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while (!processEvents(width, height, debug, reset) )
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{
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// Set view 0 default viewport.
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bgfx::setViewRect(0, 0, 0, width, height);
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// This dummy draw call is here to make sure that view 0 is cleared
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// if no other draw calls are submitted to view 0.
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bgfx::submit(0);
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int64_t now = bx::getHPCounter();
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static int64_t last = now;
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const int64_t frameTime = now - last;
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last = now;
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const double freq = double(bx::getHPFrequency() );
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const double toMs = 1000.0/freq;
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float time = (float)( (now - timeOffset)/double(bx::getHPFrequency() ) );
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// Use debug font to print information about this example.
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bgfx::dbgTextClear();
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bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/11-fontsdf");
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bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Use a single distance field font to render text of various size.");
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bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
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float at[3] = { 0, 0, 0.0f };
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float eye[3] = {0, 0, -1.0f };
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float view[16];
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float proj[16];
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mtxLookAt(view, eye, at);
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float centering = 0.5f;
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//setup a top-left ortho matrix for screen space drawing
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mtxOrtho(proj, centering, width+centering,height+centering, centering,-1.0f, 1.0f);
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// Set view and projection matrix for view 0.
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bgfx::setViewTransform(0, view, proj);
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TextRectangle rect = textBufferManager->getRectangle(staticText);
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float mtxA[16];
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float mtxB[16];
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float mtxC[16];
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mtxRotateZ(mtxA, time*0.37f);
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mtxTranslate(mtxB, -(rect.width*0.5f), -(rect.height*0.5f), 0);
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mtxMul(mtxC, mtxB, mtxA);
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float scale=4.1f+4.0f*sinf(time);
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mtxScale(mtxA, scale, scale, 1.0f);
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mtxMul(mtxB, mtxC, mtxA);
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mtxTranslate(mtxC, ((width)*0.5f), ((height)*0.5f), 0);
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mtxMul(mtxA, mtxB, mtxC);
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// Set model matrix for rendering.
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bgfx::setTransform(mtxA);
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//draw your text
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textBufferManager->submitTextBuffer(staticText, 0);
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// Advance to next frame. Rendering thread will be kicked to
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// process submitted rendering primitives.
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bgfx::frame();
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}
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//destroy the fonts
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fontManager->destroyFont(distance_font);
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fontManager->destroyFont(smaller_font);
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textBufferManager->destroyTextBuffer(staticText);
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delete textBufferManager;
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delete fontManager;
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// Shutdown bgfx.
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bgfx::shutdown();
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return 0;
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}
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