////  RenderUtil.cpp//  interface////  Created by Andrzej Kapolka on 8/15/13.//  Copyright (c) 2013 High Fidelity, Inc. All rights reserved. #include "InterfaceConfig.h"#include "RenderUtil.h" void renderFullscreenQuad(float sMin, float sMax) {    glBegin(GL_QUADS);        glTexCoord2f(sMin, 0.0f);        glVertex2f(-1.0f, -1.0f);        glTexCoord2f(sMax, 0.0f);        glVertex2f(1.0f, -1.0f);        glTexCoord2f(sMax, 1.0f);        glVertex2f(1.0f, 1.0f);        glTexCoord2f(sMin, 1.0f);        glVertex2f(-1.0f, 1.0f);    glEnd();}