一、准备资料

资料.png

二、配置 openGL 环境

1. 打开Xcode -> macOS -> Cocoa App
   1.png

2. AppDelegate.h、AppDelegate.m、main.m、ViewController.h、 ViewController.m ;
   2.png

3. 创建 main.cpp文件
   3.png
   
   
   4.png

4. 添加OpenGl.framework 和 GLUT.framework 两个系统库
   5.png

5. 添加资料
   6.png

三、测试环境是否搭建成功

在main.cpp中复制一下代码：

//
//  main.cpp
//  OpenGLTest0
//
//  Created by 邓亚洲 on 2019/4/24.
//  Copyright © 2019年 dengyazhou. All rights reserved.
//


#include "GLShaderManager.h"
#include "GLTools.h"
#include <GLUT/GLUT.h>

GLShaderManager shaderManager;
GLBatch triangleBatch;

void changeSize(int w,int h)
{
    glViewport(0, 0, w, h);
}

void RenderScene(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT|GL_STENCIL_BUFFER_BIT);
    GLfloat vRed[] = {1.0,0.0,0.0,1.0f};
    shaderManager.UseStockShader(GLT_SHADER_IDENTITY,vRed);
    triangleBatch.Draw();
    glutSwapBuffers();
}

void setupRC()
{
    glClearColor(0.98f, 0.40f, 0.7f, 1);
    shaderManager.InitializeStockShaders();
    GLfloat vVerts[] = {
        -0.5f,0.0f,0.0f,
        0.5f,0.0f,0.0f,
        0.0f,0.5f,0.0f
    };
    triangleBatch.Begin(GL_TRIANGLES, 3);
    triangleBatch.CopyVertexData3f(vVerts);
    triangleBatch.End();
}

int main(int argc,char *argv[])
{
    gltSetWorkingDirectory(argv[0]);
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGBA|GLUT_DEPTH|GLUT_STENCIL);
    glutInitWindowSize(800, 600);
    glutCreateWindow("Triangle");
    glutReshapeFunc(changeSize);
    glutDisplayFunc(RenderScene);
    GLenum status = glewInit();
    if (GLEW_OK != status) {
        printf("GLEW Error:%s\n",glewGetErrorString(status));
        return 1;
        
    }
    setupRC();
    glutMainLoop();
    return  0;
}

四、重点

#include<文件名.h> 修改为 #include"文件名"
编译，将文件“< >”系统引入，改为" "普通引入

五、效果图

效果图.png