#ifdef	TERRAIN
#ifdef	USE_SHADER
#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#ifdef MAP_EDITOR2
#include "../map_editor2/global.h"
#else
#include "global.h"
#endif

static __inline__ void load_shader(GLhandleARB ShaderObject, char* filename)
{
	int shader_size;
	FILE *file;
	char* buffer;
	
	file = fopen(filename, "rb");
	
	fseek(file, 0L, SEEK_END);
	shader_size = ftell(file);
	fseek(file, 0L, SEEK_SET);
	
	buffer = (char*)malloc(shader_size);
	
	fread(buffer, 1, shader_size, file);
	
	fclose (file);
	
	ELglShaderSourceARB(ShaderObject, 1, (const char**)&buffer, &shader_size);
	free(buffer);
}

void printf_shader_log(GLhandleARB glObject)
{
	unsigned int blen, slen;
	GLcharARB* InfoLog;
	
	glGetObjectParameterivARB(glObject, GL_OBJECT_INFO_LOG_LENGTH_ARB , &blen);
	
	if (blen > 1)
	{
		InfoLog = (GLcharARB*)malloc(blen*sizeof(GLcharARB));
		glGetInfoLogARB(glObject, blen, &slen, InfoLog);
		printf("\n%s\n", InfoLog);
		free(InfoLog);		
	}
}

GLhandleARB init_normal_mapping_shader()
{
	GLhandleARB ProgramObject, VertexShaderObject, FragmentShaderObject;

	ProgramObject = ELglCreateProgramObjectARB();

	VertexShaderObject = ELglCreateShaderObjectARB(GL_VERTEX_SHADER_ARB);
	FragmentShaderObject = ELglCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB);

	load_shader(VertexShaderObject, "/home/daniel/Develop/el-cvs/elc/shader/normal_mapping_vs.gls");
	load_shader(FragmentShaderObject, "/home/daniel/Develop/el-cvs/elc/shader/normal_mapping_fs.gls");

	ELglCompileShaderARB(VertexShaderObject);
	ELglCompileShaderARB(FragmentShaderObject);

	ELglAttachObjectARB(ProgramObject, VertexShaderObject);
	ELglAttachObjectARB(ProgramObject, FragmentShaderObject);	

	glDeleteObjectARB(VertexShaderObject);
	glDeleteObjectARB(FragmentShaderObject);

	ELglLinkProgramARB(ProgramObject);
	printf_shader_log(ProgramObject);
	return ProgramObject;
}

void free_shader(GLhandleARB ProgramObject)
{
	ELglDeleteProgramsARB(1, &ProgramObject);
}
#endif
#endif