simple culling example for openframeworks

OFSimpleCullExample

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void ofApp::draw()
{
	ofEnableAlphaBlending();
	
	//pass 1
	glEnable(GL_CULL_FACE);
	glCullFace(GL_FRONT);
	
	shader.begin();
	
	mesh.draw();
	
	shader.end();
	
	//pass 2
	glCullFace(GL_BACK);
	
	shader.begin();
	
	mesh.draw();
	
	shader.end();

	//disable culling
	glDisable(GL_CULL_FACE);
}

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