void postfilter glMatrixMode GL_PROJECTION glLoadIdentity gluOrtho2D 6

  • Anonymous
  • C++
  • 13 May 2015 
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void postfilter(){

	glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

	gluOrtho2D(0, 600, 0, 600);

	glClearColor(1.0, 1.0, 1.0, 0.0);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_ACCUM_BUFFER_BIT);

	//center

	glRasterPos2i(100,100);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.25);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//left

	glRasterPos2i(99,100);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.125);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//rigth

	glRasterPos2i(101,100);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.125);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//top

	glRasterPos2i(100,101);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.125);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//bottom

	glRasterPos2i(100,99);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.125);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//rigth + top

	glRasterPos2i(101,101);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.0625);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//rigth + bottom

	glRasterPos2i(101,99);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.0625);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//left + bottom

	glRasterPos2i(99,99);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.0625);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	//left + top

	glRasterPos2i(99,101);

	glDrawPixels(200,200,GL_RGB,GL_FLOAT,buffer);

	glAccum(GL_ACCUM, 0.0625);

	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	glAccum(GL_RETURN, 1.0);



}
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