libigl_Martin/print_shader_info_log.h

#ifndef  IGL_PRINT_SHADER_INFO_LOG_H
#define IGL_PRINT_SHADER_INFO_LOG_H

#ifdef __APPLE__
#   include <OpenGL/gl.h>
#else
#   include <GL/gl.h>
#endif

namespace igl
{
  // Inputs:
  //   obj  OpenGL index of shader to print info log about
  inline void print_shader_info_log(const GLuint obj);
}

// Implmentation
#include <cstdio>
// Copyright Denis Kovacs 4/10/08
inline void igl::print_shader_info_log(const GLuint obj)
{
  GLint infologLength = 0;
  GLint charsWritten  = 0;
  char *infoLog;
  
  // Get shader info log from opengl
  glGetShaderiv(obj, GL_INFO_LOG_LENGTH,&infologLength);
  // Only print if there is something in the log
  if (infologLength > 0)
  {
    infoLog = (char *)malloc(infologLength);
    glGetShaderInfoLog(obj, infologLength, &charsWritten, infoLog);
    printf("%s\n",infoLog);
    free(infoLog);
  }
}
#endif