bool Render()
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
	glLoadIdentity();
        m_Camera.Look();

	// Set the light pos
	glLightfv(GL_LIGHT0, GL_POSITION, (float*)&lightPos);

	// Render the depth information
	glDepthFunc(GL_LESS);
	glDepthMask(1);
	glCullFace(GL_BACK);
	glColorMask(0, 0, 0, 0);
	mesh.Render();


	// Draw the front shadow volume faces
	CalculateShadowVolume();

	glDepthFunc(GL_LESS);
	glDepthMask(0);
	glCullFace(GL_BACK);
	glEnable(GL_STENCIL_TEST);
	glStencilFunc(GL_ALWAYS, 0, ~0);
	glStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
	drawSVQuads();


	// Draw the back faces
	glCullFace(GL_FRONT);
	glStencilOp(GL_KEEP, GL_KEEP, GL_DECR);


	// Draw the mesh
//	glDepthMask(0);
	glDepthFunc(GL_EQUAL);
	glColorMask(1, 1, 1, 1);
	glCullFace(GL_BACK);
	glStencilFunc(GL_NOTEQUAL, 0, 1);

	mesh.Render();

	glDisable(GL_STENCIL_TEST);
}