64 lines
1.0 KiB
C++
64 lines
1.0 KiB
C++
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#include "graphics.h"
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#include <GL/gl.h>
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#include <GL/glu.h>
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Graphics g_graphics;
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Graphics::Graphics()
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{
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}
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Graphics::~Graphics()
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{
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}
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void Graphics::init()
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{
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// setup opengl
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // black background
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glEnable(GL_ALPHA_TEST); // enable alpha
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glAlphaFunc(GL_GREATER, 0.0f); // default alpha mode
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glDisable(GL_DEPTH_TEST); // we are rendering 2D only, we don't need it
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}
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void Graphics::terminate()
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{
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}
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void Graphics::resize(int width, int height)
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{
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// resize gl viewport
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glViewport(0, 0, width, height);
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/*
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0,0---------0,w
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h,0---------h,w
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*/
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// setup view region like above
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluOrtho2D(0.0f, width, height, 0.0f);
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// back to model view
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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}
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void Graphics::beginRender()
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{
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glClear(GL_COLOR_BUFFER_BIT);
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glLoadIdentity();
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}
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void Graphics::endRender()
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{
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}
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