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我在閱讀OpenGL編程指南：官方OpenGL學習指南。但是在運行第一個例子時遇到問題。無法在OS X上使用Xcode在OpenGL編程指南中運行示例代碼
#include <iostream>
#include "vgl.h"
#include "LoadShaders.h"
using namespace std;
enum VAO_IDs {Triangles, NumVAOs};
enum Buffer_IDs {ArrayBuffers, NumBuffers};
enum Attrib_IDs { vPosition = 0};
GLuint Buffers[NumBuffers];
GLuint VAOs[NumVAOs];
const GLuint NumVertices = 6;
void init(void)
{
glGenVertexArrays(NumVAOs, VAOs);
glBindVertexArray(VAOs[Triangles]);
GLfloat vertices[NumVertices][2] = {
{-0.9, -0.9},
{0.85, -0.9},
{-0.9, 0.85},
{0.9, -0.85},
{0.9, 0.9},
{-0.85, 0.9}
};
glGenBuffers(NumBuffers, Buffers);
glBindBuffer(GL_ARRAY_BUFFER, Buffers[ArrayBuffers]);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
ShaderInfo shaders[] = {
{GL_VERTEX_SHADER, "triangles.vert"},
{GL_FRAGMENT_SHADER, "triangles.frag"},
{GL_NONE, NULL}
};
GLuint program = LoadShaders(shaders);
glUseProgram(program);
glVertexAttribPointer(vPosition, 2, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(0));
glEnableVertexAttribArray(vPosition);
}
void display(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glBindVertexArray(VAOs[Triangles]);
glDrawArrays(GL_TRIANGLES, 0, NumVertices);
glFlush();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA);
glutInitWindowSize(512, 512);
glutInitContextVersion(4, 3);
glutInitContextProfile(GLUT_CORE_PROFILE);
glutCreateWindow(argv[0]);
if(glewInit())
{
cerr << "Unable to initialize GLEW... Exiting" <<endl;
exit(EXIT_FAILURE);
}
init();
glutDisplayFunc(display);
glutMainLoop();
}
我已經將vgl.h和LoadShaders.h所在的路徑添加到標題搜索路徑。 （我將在後的端柱，這兩個文件。）但是，錯誤顯示出來：
然後我改變了語句包含的頭「GL/gl.h」爲「的OpenGL/GL .H」，另一個錯誤顯示出來：
誰能告訴我有什麼不對？我真的很感激！
[附件]
vgl.h：
#ifndef __VGL_H__
#define __VGL_H__
// #define USE_GL3W
#ifdef USE_GL3W
#include <GL3/gl3.h>
#include <GL3/gl3w.h>
#else
#define GLEW_STATIC
#include <GL/glew.h>
#ifdef _MSC_VER
# ifdef _DEBUG
# if (_MSC_VER >= 1600)
# pragma comment (lib, "glew_static_vs2010_d.lib")
# else
# pragma comment (lib, "glew_static_d.lib")
# endif
# else
# if (_MSC_VER >= 1600)
# pragma comment (lib, "glew_static_vs2010.lib")
# else
# pragma comment (lib, "glew_static.lib")
# endif
# endif
#endif
#endif
#define FREEGLUT_STATIC
#include <GL/freeglut.h>
#ifdef _MSC_VER
# ifdef _DEBUG
# if (_MSC_VER >= 1600)
# pragma comment (lib, "freeglut_static_vs2010_d.lib")
# else
# pragma comment (lib, "freeglut_static_d.lib")
# endif
# else
# if (_MSC_VER >= 1600)
# pragma comment (lib, "freeglut_static_vs2010.lib")
# else
# pragma comment (lib, "freeglut_static.lib")
# endif
# endif
#endif
#define BUFFER_OFFSET(x) ((const void*) (x))
#endif /* __VGL_H__ */
LoadeShaders.h：
//////////////////////////////////////////////////////////////////////////////
//
// --- LoadShaders.h ---
//
//////////////////////////////////////////////////////////////////////////////
#ifndef __LOAD_SHADERS_H__
#define __LOAD_SHADERS_H__
#include <OpenGL/gl.h>
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
//----------------------------------------------------------------------------
//
// LoadShaders() takes an array of ShaderFile structures, each of which
// contains the type of the shader, and a pointer a C-style character
// string (i.e., a NULL-terminated array of characters) containing the
// entire shader source.
//
// The array of structures is terminated by a final Shader with the
// "type" field set to GL_NONE.
//
// LoadShaders() returns the shader program value (as returned by
// glCreateProgram()) on success, or zero on failure.
//
typedef struct {
GLenum type;
const char* filename;
GLuint shader;
} ShaderInfo;
GLuint LoadShaders(ShaderInfo*);
//----------------------------------------------------------------------------
#ifdef __cplusplus
};
#endif // __cplusplus
#endif // __LOAD_SHADERS_H__