我应该有GLEW的最新版本和转运蛋白,使不应该成为问题。 一切都应该联系在一起的,我使用MS Visual Studio 2010中我的程序编译,但是当我到达glCreateShader(GL_FRAGMENT_SHADER)它显示一个错误:“0000005:访问冲突”
我的程序:
#include <GL\glew.h>
#include <GL\glut.h>
#include <stdio.h>
#include <stdlib.h>
GLuint program;
static char* readShaderSource(const char * shaderFile)
{
FILE* fp = fopen(shaderFile, "r");
char* buf;
long size;
if (fp == NULL) return NULL;
fseek(fp, 0L, SEEK_END);//go to end
size = ftell(fp); //get size
fseek(fp, 0L, SEEK_SET);//go to begining
buf = (char*) malloc((size +1) * sizeof(char));
fread(buf, 1, size, fp);
buf[size] = NULL;
fclose(fp);
return buf;
}
static void initShader(const GLchar * fsFile)
{
GLint status;
GLchar * fSource;
GLuint fShader;
GLuint fShader2;
//read file
fSource = readShaderSource(fsFile);
if (fSource == NULL)
{
printf("Fail to load file");
exit(EXIT_FAILURE);
}
//Create program and shader object
fShader2 = glCreateShader(GL_VERTEX_SHADER);
fShader = glCreateShader(GL_FRAGMENT_SHADER);
program = glCreateProgram();
//Attach shaders to program
glAttachShader(program, fShader);
//read shaders
glShaderSource(fShader, 1, (const GLchar**) &fSource, NULL);
//compile fragment shader
glCompileShader(fShader);
//error check
glGetShaderiv(fShader, GL_COMPILE_STATUS, &status);
if (status == GL_FALSE)
{
printf("Failed to compile the fragment shader.");
exit(EXIT_FAILURE);
}
//link and error check
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &status);
if (status == GL_FALSE)
{
printf("program error");
exit(EXIT_FAILURE);
}
//use program object
glUseProgram(program);
//set up uniform parameter
//skipped for now
}
int main(int argc, char ** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(500,500);
glutCreateWindow("Matrix Fractal");
glClearColor(1.0, 1.0, 1.0, 1.0);
gluOrtho2D(0.0,0.0,(GLfloat) 500, (GLfloat) 500);
glutDisplayFunc(draw);
glutReshapeFunc(reshape);
initShader("fsFractal.glsl");
glutMainLoop();
}