Question

如何编写OpenGL着色器以实现模糊效果

Answer 1

#include <stdio.h>
#include <malloc.h>
#include <string.h>
char *textFileRead(char *fn)
{
FILE *fp;
char *content = NULL;
int count = 0;
if (fn != NULL)
{
///打开文件
fopen_s(&fp,fn, "r");
if (fp != NULL)
{
fseek(fp, 0, SEEK_END);
count = ftell(fp);
rewind(fp);
if (count > 0)
{
content = (char *)malloc(sizeof(char) * (count + 1));
count = fread(content, sizeof(char), count, fp);
content[count] = '\0';
}
fclose(fp);
}
}
return content;
}
int textFileWrite(char *fn, char *s)
{
FILE *fp;
int status = 0;
if (fn != NULL)
{
///打开文件
fopen_s(&fp, fn, "w");
//fp = fopen(fn, "w");
if (fp != NULL)
{
if (fwrite(s, sizeof(char), strlen(s), fp) == strlen(s))
status = 1;
fclose(fp);
}
}
return(status);
}