bgfx/examples/00-helloworld/helloworld.cpp

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/*
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* Copyright 2011-2016 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
#include <bx/uint32_t.h>
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#include "common.h"
#include "bgfx_utils.h"
#include "logo.h"
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class ExampleHelloWorld : public entry::AppI
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{
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void init(int _argc, char** _argv) BX_OVERRIDE
{
Args args(_argc, _argv);
m_width = 1280;
m_height = 720;
m_debug = BGFX_DEBUG_TEXT;
m_reset = BGFX_RESET_VSYNC;
bgfx::init(args.m_type, args.m_pciId);
bgfx::reset(m_width, m_height, m_reset);
// Enable debug text.
bgfx::setDebug(m_debug);
// Set view 0 clear state.
bgfx::setViewClear(0
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 0x303030ff
, 1.0f
, 0
);
}
virtual int shutdown() BX_OVERRIDE
{
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// Shutdown bgfx.
bgfx::shutdown();
return 0;
}
bool update() BX_OVERRIDE
{
if (!entry::processEvents(m_width, m_height, m_debug, m_reset) )
{
// Set view 0 default viewport.
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bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
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// This dummy draw call is here to make sure that view 0 is cleared
// if no other draw calls are submitted to view 0.
bgfx::touch(0);
// Use debug font to print information about this example.
bgfx::dbgTextClear();
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bgfx::dbgTextImage(bx::uint16_max(uint16_t(m_width /2/8 ), 20)-20
, bx::uint16_max(uint16_t(m_height/2/16), 6)-6
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, 40
, 12
, s_logo
, 160
);
bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/00-helloworld");
bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Initialization and debug text.");
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bgfx::dbgTextPrintf(0, 4, 0x0f, "Color can be changed with ANSI \x1b[9;me\x1b[10;ms\x1b[11;mc\x1b[12;ma\x1b[13;mp\x1b[14;me\x1b[0m code too.");
const bgfx::Stats* stats = bgfx::getStats();
bgfx::dbgTextPrintf(0, 6, 0x0f, "Backbuffer %dW x %dH in pixels, debug text %dW x %dH in characters."
, stats->width
, stats->height
, stats->textWidth
, stats->textHeight
);
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// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
bgfx::frame();
return true;
}
return false;
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}
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uint32_t m_width;
uint32_t m_height;
uint32_t m_debug;
uint32_t m_reset;
};
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ENTRY_IMPLEMENT_MAIN(ExampleHelloWorld);