3年前写过一些关于如何使用Mesa的文章,如今再试。有些东西已经变了。

首先安装:

 

sudo apt-get install libgl1-mesa-dev
sudo apt-get install libglu1-mesa-dev
sudo apt-get install freeglut3-dev


现在不用NetBeans了,用CMake创建工程。

 

根目录下的CMakeLists.txt内容:

 

cmake_minimum_required(VERSION 2.8)
project (vender)
add_subdirectory(src bin)


src目录下的CMakeLists.txt文件内容如下:

 

 

cmake_minimum_required(VERSION 2.8)
set(CMAKE_BUILD_TYPE Debug)
set(PROJECT_INCLUDE_DIR ../include)

include_directories(${PROJECT_INCLUDE_DIR})
AUX_SOURCE_DIRECTORY(${CMAKE_SOURCE_DIR}/src CPP_LIST1)

add_executable(vender ${CPP_LIST1})
target_link_libraries(vender GL GLU glut)
add_definitions(-Wall)

 

 

然后看一下src/main.cc文件内容,和3年前代码一样。

 

#include <GL/glut.h>

void init();
void display();

int main(int argc, char* argv[]) {
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);
  glutInitWindowPosition(0, 0);
  glutInitWindowSize(300, 300);

  glutCreateWindow("OpenGL 3D View");

  init();
  glutDisplayFunc(display);

  glutMainLoop();
  return 0;
}

void init() {
  glClearColor(0.0, 0.0, 0.0, 0.0);
  glMatrixMode(GL_PROJECTION);
  glOrtho(-5, 5, -5, 5, 5, 15);
  glMatrixMode(GL_MODELVIEW);
  gluLookAt(0, 0, 10, 0, 0, 0, 0, 1, 0);
}

void display() {
  glClear(GL_COLOR_BUFFER_BIT);

  glColor3f(1.0, 0, 0);
  glutWireTeapot(3);

  glFlush();
}

运行结果:

 

Ubuntu13.04使用Mesa_创建工程

我这次不想绘制什么图形,只是想知道我的显卡类型。因此代码删减如下:

 

#include <GL/glut.h>

#include <iostream>

using namespace std;

int main(int argc, char* argv[]) {
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);
  glutInitWindowPosition(0, 0);
  glutInitWindowSize(300, 300);
  
    
  glutCreateWindow("OpenGL 3D View");

  GLubyte const* vender = glGetString(GL_VENDOR);
  cout << "GL_VENDOR: " << vender << endl;

  GLubyte const* renderer = glGetString(GL_RENDERER);
  cout << "GL_RENDERER: " << renderer << endl;

  GLubyte const* version = glGetString(GL_VERSION);
  cout << "GL_VERSION: " << version << endl;

  return 0;
}


运行结果:

 

 

dean@dean-GA-MA790XT-UD4P:~/work/opengl/vendor/build/bin$ ./vender 
GL_VENDOR: X.Org
GL_RENDERER: Gallium 0.4 on AMD JUNIPER
GL_VERSION: 3.0 Mesa 9.1.4