OpenGL超级宝典-第4版 chapter4-transformgl.cpp运行方法-优快云博客

本文档详细介绍了如何配置和运行OpenGL超级宝典第四版中chapter4的transformgl.cpp程序。主要涉及GLee.c和gltools.cpp文件的头文件修改，将包含路径更改为使用<gl/>前缀，并提到了在特定环境下，可以考虑包含GLee.h和Glee.c以简化步骤。

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环境：opengl不知道第几版的，visual studio 2010，windows7，glutdlls37beta

方法：
1、将share目录下的GLee.h, GLee.c, gltools.cpp, gltools.h, math3d.cpp, math3d.h, wglext.h, glut.h拷贝到C:\Program Files\Microsoft SDKs\Windows\v7.0A\Include\gl目录下。

2、修改GLee.c文件第43行：#include "GLee.h"改为#include <gl\GLee.h>

修改GLee.h文件第58行：#include <GL/gl.h>改为#include #include <gl/gl.h>

修改gltools.cpp文件第10、11、75行：#include "gltools.h"改为#include <gl\gltools.h>，#include "math3d.h"改为#include <gl\math3d.h>， #include "wglext.h"改为#include <gl\wglext.h>

修改gltools.h文件第19、22行：#include "glee.h"改为#include <gl\glee.h>， #include "glut.h"改为#include <gl\glut.h>
修改math3d.cpp文件第7行：#include "math3d.h"改为#include <gl\math3d.h>

3、修改transformgl.cpp的头文件为

#include <gl\gltools.h>
#include <gl\math3d.h>
#include "C:\Program Files\Microsoft SDKs\Windows\v7.0A\Include\gl\math3d.cpp"
#include "C:\Program Files\Microsoft SDKs\Windows\v7.0A\Include\gl\gltools.cpp"

4、在transformgl.cpp中加入

（###############2011.10.25########

如果加入#include <gl\GLee.h>和#include "C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Include\gl\Glee.c"

则可以不用加入这段代码

###################################）

PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
PFNGLUNIFORM4FARBPROC glUniform4fARB;
PFNGLUNIFORM1IARBPROC glUniform1iARB;

不知道干什么的，但不加入会提示一些无法编译的错误
参考http://hi.baidu.com/deyaliu/blog/item/4261da323bc10acda3cc2b8f.html

##################################################################
/*
file:first_GLSL.c
compile: get glext.h from www.opengl.org,then type
   gcc -D_STDCALL_SUPPORTED first_GLSL.c -lopengl32 -lglut32


*/


#include<stdlib.h>//exit
#include<stdio.h>//printf
#include<GL/glut.h>


#include<windows.h>//wgeGetProcAddress 
#include "glext.h" //for the following strings 


PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
PFNGLUNIFORM4FARBPROC glUniform4fARB;
PFNGLUNIFORM1IARBPROC glUniform1iARB;


int install_func();//make above function pointers concrete


static const char *FragSource = {
"void main(void)"
"{"
"  gl_FragColor = vec4(0.0,1.0,0.0,1.0);"
"}"
};


static const char *VertSource = {
"void main(void)"
"{"
"vec4 a = gl_Vertex;"
"a.x = a.x * 0.5;"
"a.y = a.y * 0.5;"
"gl_Position = gl_ModelViewProjectionMatrix * a;"
"}"
};


GLint program_object,fragment_shader,vertex_shader;


int shader_init()
{
   GLint success;
   char info[4096];


   install_func();


   program_object = glCreateProgramObjectARB();
   fragment_shader = glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB);
   vertex_shader = glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB);


   glShaderSourceARB(fragment_shader,1,&FragSource,NULL);
   glShaderSourceARB(vertex_shader,1,&VertSource,NULL);


   glCompileShaderARB(fragment_shader);
   glGetObjectParameterivARB(fragment_shader,GL_OBJECT_COMPILE_STATUS_ARB,&success);
   if(!success)
   {
      glGetInfoLogARB(fragment_shader,sizeof(info),NULL,info);
      printf("fragment compile error:%s\n",info);
      exit(1);
   }


   glCompileShaderARB(vertex_shader);
   glGetObjectParameterivARB(vertex_shader,GL_OBJECT_COMPILE_STATUS_ARB,&success);
   if(!success)
   {
      glGetInfoLogARB(vertex_shader,sizeof(info),NULL,info);
      printf("vertex compile error:%s\n",info);
      exit(3);
   }


   glAttachObjectARB(program_object,fragment_shader);
   glAttachObjectARB(program_object,vertex_shader);


   glLinkProgramARB(program_object);
   glGetObjectParameterivARB(program_object,GL_OBJECT_LINK_STATUS_ARB,&success);
   if(!success)
   {
      printf("link error\n");
      exit(2);
   }


   return 0;
}


void display()
{
   glClear(GL_COLOR_BUFFER_BIT);


   glUseProgramObjectARB(program_object);//enable


   glutSolidSphere(0.2,32,32);//green


   glColor3f(1,0,0);//change color
   glRectf(-0.5,-0.5,0.5,-0.3);//still green


   glUseProgramObjectARB(0);//disable


   glRectf(-0.5,0.3,0.5,0.5);//red


   glFlush();
}


int main()
{
   glutInitDisplayMode(GLUT_RGBA|GLUT_SINGLE);
   glutInitWindowSize(400,300);
   glutCreateWindow("first GLSL");


   glutDisplayFunc(display);
   shader_init();
   glutMainLoop();
   return 0;
}


/*********fixed*************/


int install_func()
{
   glCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC)wglGetProcAddress("glCreateProgramObjectARB");


   glDeleteObjectARB = (PFNGLDELETEOBJECTARBPROC)wglGetProcAddress("glDeleteObjectARB");


   glUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC)wglGetProcAddress("glUseProgramObjectARB");


   glCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC)wglGetProcAddress("glCreateShaderObjectARB");


   glShaderSourceARB = (PFNGLSHADERSOURCEARBPROC)wglGetProcAddress("glShaderSourceARB");


   glCompileShaderARB = (PFNGLCOMPILESHADERARBPROC)wglGetProcAddress("glCompileShaderARB");


   glGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC)wglGetProcAddress("glGetObjectParameterivARB");


   glAttachObjectARB = (PFNGLATTACHOBJECTARBPROC)wglGetProcAddress("glAttachObjectARB");


   glGetInfoLogARB = (PFNGLGETINFOLOGARBPROC)wglGetProcAddress("glGetInfoLogARB");


   glLinkProgramARB = (PFNGLLINKPROGRAMARBPROC)wglGetProcAddress("glLinkProgramARB");


   glGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC)wglGetProcAddress("glGetUniformLocationARB");


   glUniform4fARB = (PFNGLUNIFORM4FARBPROC)wglGetProcAddress("glUniform4fARB");


   glUniform1iARB = (PFNGLUNIFORM1IARBPROC)wglGetProcAddress("glUniform1iARB");


   return !glCreateProgramObjectARB || !glDeleteObjectARB || !glUseProgramObjectARB ||
      !glCreateShaderObjectARB || !glCreateShaderObjectARB || !glCompileShaderARB ||
      !glGetObjectParameterivARB || !glAttachObjectARB || !glGetInfoLogARB ||
      !glLinkProgramARB || !glGetUniformLocationARB || !glUniform4fARB ||
      !glUniform1iARB;
}
#######################################################

在一些include里使用了实际的路径是很不好的，但暂时只找到了这一个可以运行这个示例的方法