glfw3的使用

glfw3是glut之后的比较流行的opengl的渲染框架,同样他支持双缓冲等,具体看glfw3的doc

1.编写makefile

CC      = g++
# -O2       : optimization option
# -s        : build small binary
# -mwindows : use this option to remove the popping cmd window
CCFLAGS = -O2 -Wall
BIN     = Demo.exe
WINDRES = windres
COMMONC = 
RES     = 
OBJ     = 

# MinGWLib路径
MGBPATH = 'D:\ProgramFiles\MinGW\lib'
# 项目Lib路径
CUBPATH = lib
# 项目头文件路径
CUCPATH = include
# 连接库文件
LIBS	=-L$(CUBPATH) -lglfw3 -lgdi32
INCLU	=-I$(CUCPATH)
RM      = -del

# 编译源码
$(BIN): Demo.cpp
	$(CC) $(CCFLAGS) -o $(BIN) -c $^ $(INCLU) $(LIBS)  

# 清理,PHONY避免无依赖时被看成最终目标
.PHONY:clean
clean:
	$(RM) $(BIN) $(OBJ)

# 直接运行生成的文件
# .PHONY:run
run:$(BIN)
	$(BIN)
           

记住这里我们使用mingw中的g++是4.0+的,而官方的提供glfw3的mingw版式3.+的版本的,所以需要-c指定源文件,否则会__chkstk_ms的失败

2.官方的例子

#include <GLFW/glfw3.h>

int main(void)
{
    GLFWwindow* window;

    /* Initialize the library */
    if (!glfwInit())
        return -1;

    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    /* Make the window's context current */
    glfwMakeContextCurrent(window);

    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window))
    {
        /* Render here */

        /* Swap front and back buffers */
        glfwSwapBuffers(window);

        /* Poll for and process events */
        glfwPollEvents();
    }

    glfwTerminate();
    return 0;
}           

3.接着在cmd下set你的minwg的bin路径(个人不喜欢把bin加入系统path,只是临时使用,因为当你的开发工具太多时经常出现版本冲突问题等)

F:\work\opengl\_draw_triangle>make
g++ -O2 -Wall -o Demo.exe -c Demo.cpp -Iinclude -Llib -lglfw3 -lgdi32

F:\work\opengl\_draw_triangle>           

4.